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Jing Ma
Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, China University of Mining and Technology, Xuzhou, Jiangsu, 221008, China

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Journal article
Published: 08 May 2021 in Journal of Environmental Management
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To improve grain production capacity, many areas in the world are shifting from rainfed agriculture to irrigated agriculture. One example of such land consolidation is dryland-to-paddy conversion. The conversion of land use pattern largely affects the stability of farmland soil, especially the soil carbon cycle. However, the mutual feedback mechanisms between carbon flux variation and environmental factors during the farmland consolidation process are still poorly known. Located in the Huang-Huai-Hai Plain China, Xuzhou is a typical area where dryland-to-paddy conversion are most widely distributed. Therefore, in this study, we have carried out dryland-to-paddy conversion by setting up two isolated rectangular fields one group planting corn in dryland (DL) and another group planting in paddy field (PF) in Xuzhou. Here, we determined the effect of dryland-to-paddy consolidation on soil CO2 flux in two isolated rectangular fields - the dryland (DL) cultivated with corn and the paddy field (PF) cultivated with rice. Our results showed that the soil carbon flux and temperature followed similar unimodal curves with greater soil CO2 flux of in PF than in DL. Surprisingly, the land conversion significantly reduced soil microbial biomass carbon and easily oxidized organic carbon by 28.55% and 29.09%, respectively. The structural equation modeling results demonstrated that the changes in soil environmental factors, including temperature, and fungal OTU numbers, were the primary drivers for the soil CO2 flux and soil carbon pool (P < 0.05). Overall, this study improves the understanding of the ecological impact of dryland-to-paddy conversion, providing insights into low-carbon agriculture and climate mitigation.

ACS Style

Xiaoxiao Li; Nan Hui; Yongjun Yang; Jing Ma; Zhanbin Luo; Fu Chen. Short-term effects of land consolidation of dryland-to-paddy conversion on soil CO2 flux. Journal of Environmental Management 2021, 292, 112691 .

AMA Style

Xiaoxiao Li, Nan Hui, Yongjun Yang, Jing Ma, Zhanbin Luo, Fu Chen. Short-term effects of land consolidation of dryland-to-paddy conversion on soil CO2 flux. Journal of Environmental Management. 2021; 292 ():112691.

Chicago/Turabian Style

Xiaoxiao Li; Nan Hui; Yongjun Yang; Jing Ma; Zhanbin Luo; Fu Chen. 2021. "Short-term effects of land consolidation of dryland-to-paddy conversion on soil CO2 flux." Journal of Environmental Management 292, no. : 112691.

Original research article
Published: 16 April 2021 in Frontiers in Environmental Science
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The microtopographic changes induced by coal mining subsidence caused a series of environmental problems such as soil erosion, and vegetation degradation in the mining area. However, the corresponding influence on surface vegetation and soil characteristic in different parts of the slope was completely different. To understand soil and vegetation degradation in coal mines and their future ecological restoration, it was crucial to investigate the origin. The relationship between soil microbial community diversity, structure, and taxa in the slope of subsidence area of different topographic locations in Daliuta coal mine, Shannxi, China, was determined by high throughput sequencing and molecular ecological network analysis. The relationship between the bacterial communities, environmental factors, and soil physicochemical properties was also investigated. We found a new topographic trait formed by surface subsidence to deteriorate the living environment of vegetation and the bacterial community. The vegetation coverage, soil water content, organic matter, and urease and dehydrogenase activities decreased significantly (p < 0.05). Although soil bacterial community diversity in the subsidence area did not differ significantly, the dominant taxa in different topographic locations varied. The molecular ecological networks representing bacterial community structure and function were also totally different. The networks in the middle and the top of the slope tend to be more complicated, and the interaction between species is obviously stronger than that of the bottom. However, the network in the bottom slope approached simplicity, and weak interaction, predominantly cooperative, was observed within and between modules. Meanwhile, the double stress of aridity and the lack of carbon source induced by subsidence also enhanced the capacity of the soil bacterial community to metabolize complex carbon sources at the bottom of the slope.

ACS Style

Qi Zhang; Jing Ma; Yongjun Yang; Zhanbin Luo; Yifei Wang; Fu Chen. Mining Subsidence-Induced Microtopographic Effects Alter the Interaction of Soil Bacteria in the Sandy Pasture, China. Frontiers in Environmental Science 2021, 9, 1 .

AMA Style

Qi Zhang, Jing Ma, Yongjun Yang, Zhanbin Luo, Yifei Wang, Fu Chen. Mining Subsidence-Induced Microtopographic Effects Alter the Interaction of Soil Bacteria in the Sandy Pasture, China. Frontiers in Environmental Science. 2021; 9 ():1.

Chicago/Turabian Style

Qi Zhang; Jing Ma; Yongjun Yang; Zhanbin Luo; Yifei Wang; Fu Chen. 2021. "Mining Subsidence-Induced Microtopographic Effects Alter the Interaction of Soil Bacteria in the Sandy Pasture, China." Frontiers in Environmental Science 9, no. : 1.

Data note
Published: 08 February 2021 in BMC Research Notes
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Objectives Altitude integrates changes in environmental conditions that determine shifts in vegetation, including temperature, precipitation, solar radiation and edaphogenetic processes. In turn, vegetation alters soil biophysical properties through litter input, root growth, microbial and macrofaunal interactions. The belowground traits of plant communities modify soil processes in different ways, but it is not known how root traits influence soil biota at the community level. We collected data to investigate how elevation affects belowground community traits and soil microbial and faunal communities. This dataset comprises data from a temperate climate in France and a twin study was performed in a tropical zone in Mexico. Data description The paper describes soil physical and chemical properties, climatic variables, plant community composition and species abundance, plant community traits, soil microbial functional diversity and macrofaunal abundance and diversity. Data are provided for six elevations (1400–2400 m) ranging from montane forest to alpine prairie. We focused on soil biophysical properties beneath three dominant plant species that structure local vegetation. These data are useful for understanding how shifts in vegetation communities affect belowground processes, such as water infiltration, soil aggregation and carbon storage. Data will also help researchers understand how plant communities adjust to a changing climate/environment.

ACS Style

Alexia Stokes; Guillermo Angeles; Fabien Anthelme; Eduardo Aranda-Delgado; Isabelle Barois; Manon Bounous; Nereyda Cruz-Maldonado; Thibaud Decaëns; Stéphane Fourtier; Grégoire T. Freschet; Quentin Gabriac; Daniel Hernández-Cáceres; Leonor Jiménez; Jing Ma; Zhun Mao; Beatriz Eugenia Marín-Castro; Luis Merino-Martín; Awaz Mohamed; Christian Piedallu; Carlos Pimentel-Reyes; Hans Reijnen; Frédérique Reverchon; Hervé Rey; Lavinia Selli; Christina Desireé Siebe-Grabach; Katrin Sieron; Monique Weemstra; Catherine Roumet. Shifts in soil and plant functional diversity along an altitudinal gradient in the French Alps. BMC Research Notes 2021, 14, 1 -4.

AMA Style

Alexia Stokes, Guillermo Angeles, Fabien Anthelme, Eduardo Aranda-Delgado, Isabelle Barois, Manon Bounous, Nereyda Cruz-Maldonado, Thibaud Decaëns, Stéphane Fourtier, Grégoire T. Freschet, Quentin Gabriac, Daniel Hernández-Cáceres, Leonor Jiménez, Jing Ma, Zhun Mao, Beatriz Eugenia Marín-Castro, Luis Merino-Martín, Awaz Mohamed, Christian Piedallu, Carlos Pimentel-Reyes, Hans Reijnen, Frédérique Reverchon, Hervé Rey, Lavinia Selli, Christina Desireé Siebe-Grabach, Katrin Sieron, Monique Weemstra, Catherine Roumet. Shifts in soil and plant functional diversity along an altitudinal gradient in the French Alps. BMC Research Notes. 2021; 14 (1):1-4.

Chicago/Turabian Style

Alexia Stokes; Guillermo Angeles; Fabien Anthelme; Eduardo Aranda-Delgado; Isabelle Barois; Manon Bounous; Nereyda Cruz-Maldonado; Thibaud Decaëns; Stéphane Fourtier; Grégoire T. Freschet; Quentin Gabriac; Daniel Hernández-Cáceres; Leonor Jiménez; Jing Ma; Zhun Mao; Beatriz Eugenia Marín-Castro; Luis Merino-Martín; Awaz Mohamed; Christian Piedallu; Carlos Pimentel-Reyes; Hans Reijnen; Frédérique Reverchon; Hervé Rey; Lavinia Selli; Christina Desireé Siebe-Grabach; Katrin Sieron; Monique Weemstra; Catherine Roumet. 2021. "Shifts in soil and plant functional diversity along an altitudinal gradient in the French Alps." BMC Research Notes 14, no. 1: 1-4.

Journal article
Published: 20 October 2020 in International Journal of Environmental Research and Public Health
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Cadmium presence in soil is considered a significant threat to human health. Biochar is recognized as an effective method to immobilize Cd ions in different soils. However, obtaining effective and viable biochar to remove elevated Cd from postmining soil remains a challenge. More modifiers need to be explored to improve biochar remediation capacity. In this investigation, pot experiments were conducted to study the effects of poplar-bark biochar (PBC600) and thiourea-modified poplar-bark biochar (TPBC600) on Cd speciation and availability, as well as on soil properties. Our results showed that the addition of biochar had a significant influence on soil properties. In the presence of TPBC600, the acid-soluble and reducible Cd fractions were transformed into oxidizable and residual Cd fractions. This process effectively reduced Cd bioavailability in the soil system. Compared to PBC600, TPBC600 was more effective in improving soil pH, electrical conductivity (EC), organic matter (SOM), total nitrogen (TN), ammonium nitrogen (NH4+-N), nitrate nitrogen (NO3--N), available potassium (AK), available phosphorus (AP), and available sulfur (AS). However, this improvement diminished as incubation time increased. Results of Pearson correlation analysis, multivariate linear regression analysis, and principal component analysis showed that soil pH and available phosphorus played key roles in reducing the available cadmium in soil. Therefore, TPBC600 was shown to be an effective modifier that could be used in the remediation of soil polluted with Cd.

ACS Style

Yanfeng Zhu; Jing Ma; Fu Chen; Ruilian Yu; Gongren Hu; Shaoliang Zhang. Remediation of Soil Polluted with Cd in a Postmining Area Using Thiourea-Modified Biochar. International Journal of Environmental Research and Public Health 2020, 17, 7654 .

AMA Style

Yanfeng Zhu, Jing Ma, Fu Chen, Ruilian Yu, Gongren Hu, Shaoliang Zhang. Remediation of Soil Polluted with Cd in a Postmining Area Using Thiourea-Modified Biochar. International Journal of Environmental Research and Public Health. 2020; 17 (20):7654.

Chicago/Turabian Style

Yanfeng Zhu; Jing Ma; Fu Chen; Ruilian Yu; Gongren Hu; Shaoliang Zhang. 2020. "Remediation of Soil Polluted with Cd in a Postmining Area Using Thiourea-Modified Biochar." International Journal of Environmental Research and Public Health 17, no. 20: 7654.

Original paper
Published: 17 September 2020 in Natural Resources Research
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To study the regularity of anaerobic fermentation in coal during coal crack development, a series of tests and analyses was carried out. Test objects included dynamic air percolation with crack evolution, influence of changes in specific surface area, and rate of O2 percolation on anaerobic fermentation. The key factors affecting anaerobic fermentation at different zones of coal seam during crack development were analyzed. Data confirmed that the level of crack development in coal is positively correlated with coal permeability and effect of air diffusion in the cracks. Meanwhile, results showed that the anaerobic condition could be maintained when O2 percolation is lower than 3000 ppm with the effect of O2 consumption by the facultative anaerobes. Furthermore, the coal seam can be divided into “anaerobic fermentation inhibit zone” and “anaerobic fermentation zone” and it can be separated by a biological anaerobic interference interface. In the anaerobic fermentation inhibit zone, coal biogasification can be inhibited by air percolation, and change in O2 condition was the critical control factor. In the anaerobic fermentation zone, the increase in specific surface area was the critical control factor to enhance the efficiency of coal biodegradation. This research has engineering guiding significance for revealing the influence of coal fragmentation on coal biogasification in the stress concentration zone of the mining area.

ACS Style

Dong Xiao; Mohamed Keita; Hailun He; Enyuan Wang; Yidong Zhang; Huan He; Jing Ma. Influence Mechanism of Coal Crack Development on Coal Biogasification Under the Influence of Mining. Natural Resources Research 2020, 30, 697 -705.

AMA Style

Dong Xiao, Mohamed Keita, Hailun He, Enyuan Wang, Yidong Zhang, Huan He, Jing Ma. Influence Mechanism of Coal Crack Development on Coal Biogasification Under the Influence of Mining. Natural Resources Research. 2020; 30 (1):697-705.

Chicago/Turabian Style

Dong Xiao; Mohamed Keita; Hailun He; Enyuan Wang; Yidong Zhang; Huan He; Jing Ma. 2020. "Influence Mechanism of Coal Crack Development on Coal Biogasification Under the Influence of Mining." Natural Resources Research 30, no. 1: 697-705.

Journal article
Published: 27 March 2020 in Microorganisms
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Microorganisms are the driving force behind the circulation and transformation of the soil substance. The development of soil bacterial communities is critical for ecosystem restoration and evolution. In the Loess Plateau, coal mining activities have aggravated the deterioration of the fragile local ecological environment. The adaptive development of soil bacterial communities in response to different ecological processes caused by coal mining activities was explored through high-throughput sequencing technology and an ecological network analysis of the mining subsidence area of the Daliuta Coal Mine and vegetation rehabilitation area of the Heidaigou Coal Mine in the Loess Plateau. The results showed that while mining subsidence was inhibited, vegetation rehabilitation promoted the soil physicochemical properties. Soil organic matter, available phosphorus and available potassium in the subsidence area decreased significantly (P < 0.05), while soil organic matter, soil water, pH and EC in the vegetation rehabilitation area increased significantly (P < 0.05). The diversity index in the subsidence area decreased by about 20%, while that in the vegetation rehabilitation area increased by 63%. Mining subsidence and vegetation rehabilitation had a distinct influence on the molecular ecological networks of the soil bacteria, which tended to be more complex after the mining subsidence, and the number of connections in the network increased otherwise significantly enhanced interactive relationships. After the vegetation rehabilitation, the number of modules in the ecological network increased, but the contents of modules tended to be simpler. Soil bacterial communities adapted to the changes by changing the relationships between bacteria in response to different ecological processes. This study provides new insights into the monitoring and abatement of the damaged ecological environment in mines.

ACS Style

Zhanbin Luo; Jing Ma; Fu Chen; Xiaoxiao Li; Qi Zhang; Yongjun Yang. Adaptive Development of Soil Bacterial Communities to Ecological Processes Caused by Mining Activities in the Loess Plateau, China. Microorganisms 2020, 8, 477 .

AMA Style

Zhanbin Luo, Jing Ma, Fu Chen, Xiaoxiao Li, Qi Zhang, Yongjun Yang. Adaptive Development of Soil Bacterial Communities to Ecological Processes Caused by Mining Activities in the Loess Plateau, China. Microorganisms. 2020; 8 (4):477.

Chicago/Turabian Style

Zhanbin Luo; Jing Ma; Fu Chen; Xiaoxiao Li; Qi Zhang; Yongjun Yang. 2020. "Adaptive Development of Soil Bacterial Communities to Ecological Processes Caused by Mining Activities in the Loess Plateau, China." Microorganisms 8, no. 4: 477.

Preprint content
Published: 23 March 2020
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Understanding the interactions among different soil microbial species and how they responded to disturbances are essential to ecological restoration and resilience in the damaged mining areas. This information, however, remains unclear and poorly understood. In this study, we investigated the bacterial distribution in disturbed mining areas across three provinces of China, and constructed molecular ecological networks to reveal the interactions among soil bacterial communities. Furthermore, we examined the relationship between the microbial network topology and environmental factors to show if there is a correlation between the resilience of bacterial community and external pressure. Bacterial community composition differed dramatically among the different disturbed mining areas, and bacterial diversity decreased as microbial networks became more complex. Additionally, based on the network topology, we distinguished key microbial populations among the different mining areas, such as Proteobacteria, Acidobacteria, Actinobacteria, and Chloroflexi. Moreover, the network structure was significantly correlated with soil properties (e.g., pH value, electrical conductivity value, and available phosphorus value), which suggested that microbial network interactions might change the soil resilience, then affect soil ecosystem functions. Overall, our findings provided insight into the ways in which microorganisms responded to mining activities and change the resilience by regulating their interactions in different ecosystems.

ACS Style

Jing Ma; Fu Chen. Molecular ecological network complexity drives stand resilience of soil bacteria to mining disturbances among typical damaged ecosystems in China. 2020, 1 .

AMA Style

Jing Ma, Fu Chen. Molecular ecological network complexity drives stand resilience of soil bacteria to mining disturbances among typical damaged ecosystems in China. . 2020; ():1.

Chicago/Turabian Style

Jing Ma; Fu Chen. 2020. "Molecular ecological network complexity drives stand resilience of soil bacteria to mining disturbances among typical damaged ecosystems in China." , no. : 1.

Journal article
Published: 19 March 2020 in Microorganisms
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Understanding the interactions of soil microbial species and how they responded to disturbances are essential to ecological restoration and resilience in the semihumid and semiarid damaged mining areas. Information on this, however, remains unobvious and deficiently comprehended. In this study, based on the high throughput sequence and molecular ecology network analysis, we have investigated the bacterial distribution in disturbed mining areas across three provinces in China, and constructed molecular ecological networks to reveal the interactions of soil bacterial communities in diverse locations. Bacterial community diversity and composition were classified measurably between semihumid and semiarid damaged mining sites. Additionally, we distinguished key microbial populations across these mining areas, which belonged to Proteobacteria, Acidobacteria, Actinobacteria, and Chloroflexi. Moreover, the network modules were significantly associated with some environmental factors (e.g., annual average temperature, electrical conductivity value, and available phosphorus value). The study showed that network interactions were completely different across the different mining areas. The keystone species in different mining areas suggested that selected microbial communities, through natural successional processes, were able to resist the corresponding environment. Moreover, the results of trait-based module significances showed that several environmental factors were significantly correlated with some keystone species, such as OTU_8126 (Acidobacteria), OTU_8175 (Burkholderiales), and OTU_129 (Chloroflexi). Our study also implied that the complex network of microbial interaction might drive the stand resilience of soil bacteria in the semihumid and semiarid disturbed mining areas.

ACS Style

Jing Ma; Yongqiang Lu; Fu Chen; Xiaoxiao Li; Dong Xiao; Hui Wang. Molecular Ecological Network Complexity Drives Stand Resilience of Soil Bacteria to Mining Disturbances among Typical Damaged Ecosystems in China. Microorganisms 2020, 8, 433 .

AMA Style

Jing Ma, Yongqiang Lu, Fu Chen, Xiaoxiao Li, Dong Xiao, Hui Wang. Molecular Ecological Network Complexity Drives Stand Resilience of Soil Bacteria to Mining Disturbances among Typical Damaged Ecosystems in China. Microorganisms. 2020; 8 (3):433.

Chicago/Turabian Style

Jing Ma; Yongqiang Lu; Fu Chen; Xiaoxiao Li; Dong Xiao; Hui Wang. 2020. "Molecular Ecological Network Complexity Drives Stand Resilience of Soil Bacteria to Mining Disturbances among Typical Damaged Ecosystems in China." Microorganisms 8, no. 3: 433.

Preprint content
Published: 09 March 2020
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Understanding the interactions among different soil microbial species and how they responded to reclamation is essential to ecological restoration and the land development. In this study, we investigated the bacterial distribution in different reclamation sites and constructed molecular ecological networks to reveal the interactions among soil bacterial communities along the reclamation timeline. The relationship between the microbial network module and environmental factors were also analyzed. Bacterial community diversity and composition changed dramatically along the reclamation timeline. PCA and NMDS analysis showed the microbial distribution patterns varied along the reclamation years. Additionally, based on the network profile, phyla Acidobacteria, Planctomycetes and Proteobacteria were distinguished as the key microbial populations in most reclamation sites. Moreover, different network structures were significantly correlated with different soil properties, such as pH value, soil organic matter, soil dehydrogenase and urease activity, which implied that microbial network interactions might influence the soil ecological functions. The variation of the network complexity along the reclamation years revealed that the microbial development and the persistent agricultural utilization promoted the land development of the reclaimed soil in disturbed mining area. Overall, our findings could provide some information of how microorganisms changed along the increasing reclamation time, and how they responded to reclamation activity by regulating their interactions in different ecosystems.

ACS Style

Fu Chen; Jing Ma. Explicating potential soil development of reclaimed farmlands using the molecular ecological network analysis in mining disturbed area, East China. 2020, 1 .

AMA Style

Fu Chen, Jing Ma. Explicating potential soil development of reclaimed farmlands using the molecular ecological network analysis in mining disturbed area, East China. . 2020; ():1.

Chicago/Turabian Style

Fu Chen; Jing Ma. 2020. "Explicating potential soil development of reclaimed farmlands using the molecular ecological network analysis in mining disturbed area, East China." , no. : 1.

Journal article
Published: 15 January 2020 in International Journal of Environmental Research and Public Health
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Irrigation has been applied on a large scale for the improvement of grain yield per hectare and production stability. However, the dryland-to-paddy conversion affects the ecological environment of areas of long-term dry farming, especially soil microorganisms. Little attention has been paid to the changes in microbial communities and the interactions between their populations in this process. Therefore, in this paper, the compositions and diversity of soil bacterial and fungal communities were explored through a combination of high-throughput sequencing technology and molecular ecological network methods using bacterial 16S rRNA and fungal ITS. The results showed that: (1) both the abundance and diversity of soil bacteria and fungi decreased in a short time, and the abundance of Actinobacteria, Firmicutes and Olpidiomycota varied greatly. (2) Compared to dry land, the modular structure of interaction networks and interspecific relationships of bacterial and fungal communities in paddy soil were simpler, and the network became more unstable. A cooperative relationship dominated in the molecular ecological network of bacteria, while a competitive relationship was dominant in the network of fungi. Actinobacteria and Firmicutes were the dominant bacterial species in dry land and paddy field, respectively. Ascomycota was dominant in the fungal communities of both dry land and paddy field. (3) The change in soil environmental factors, such as pH, electrical conductivity (EC), organic matter (OM) and available potassium (AK), directly affected the soil microbial community structure, showing a significant correlation (p < 0.05). These environmental factors also influenced the dominant microbial species. Microorganisms are the most important link in the carbon and nitrogen cycles of soil, and a large-scale dryland-to-paddy conversion may reduce the ecological stability of regional soil.

ACS Style

Xiaoxiao Li; Qi Zhang; Jing Ma; Yongjun Yang; Yifei Wang; Chen Fu. Flooding Irrigation Weakens the Molecular Ecological Network Complexity of Soil Microbes during the Process of Dryland-to-Paddy Conversion. International Journal of Environmental Research and Public Health 2020, 17, 561 .

AMA Style

Xiaoxiao Li, Qi Zhang, Jing Ma, Yongjun Yang, Yifei Wang, Chen Fu. Flooding Irrigation Weakens the Molecular Ecological Network Complexity of Soil Microbes during the Process of Dryland-to-Paddy Conversion. International Journal of Environmental Research and Public Health. 2020; 17 (2):561.

Chicago/Turabian Style

Xiaoxiao Li; Qi Zhang; Jing Ma; Yongjun Yang; Yifei Wang; Chen Fu. 2020. "Flooding Irrigation Weakens the Molecular Ecological Network Complexity of Soil Microbes during the Process of Dryland-to-Paddy Conversion." International Journal of Environmental Research and Public Health 17, no. 2: 561.

Review article
Published: 07 December 2019 in Science of The Total Environment
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Coal production and utilization are recognized as two principal sources of potentially toxic elements in the environment. Here the published literature (2008–2018) was searched to collect data on As, Ni, Cd, Cu, Cr, Hg, Pb and Zn concentrations in soils near different types of coal industrial areas such as coal mines, thermal power plants, coal chemical plants, coal mining cities and coal waster piles. The contamination levels of soils and associated health risks were assessed using global reference materials and multiple contamination indices. The results revealed that average concentrations of potentially toxic elements varied widely, yet most of them exceeded global averages in background soils and upper continental crust concentrations. Spatial distribution analysis suggested the concentrations of potentially toxic elements varied according to coalification and combustion conditions. Higher concentrations were found in Southeast Asia, South Europe, and North Africa compared with other regions. Assessment of the geoaccumulation index revealed that contamination levels of Cd and Hg were higher than those of other elements. In particular, Ni, Cd, Zn, and Hg were most likely to accumulate in soils near coal mining areas, while Cd and Hg tended to accumulate near coal chemical plants. Regarding non-carcinogenic risks, oral ingestion was the major pathway of exposure to potentially toxic elements in coal industry-associated soils, followed by dermal contact and inhalation. Tolerable non-carcinogenic risk of potentially toxic elements and relatively high carcinogenic risks of As were observed. Children were most vulnerable to non-carcinogenic risks, while the carcinogenic risks estimated for adult and children populations were similar. Accordingly, As should be designated as top candidates for priority control to protect human health in the vicinity of coal industry-associated areas. This study provides timely information for developing control and management strategies to reduce soil contamination by potentially toxic elements in different types of coal industrial areas.

ACS Style

Xin Xiao; Jixiong Zhang; Hui Wang; Xiaoxun Han; Jing Ma; Yu Ma; Huijun Luan. Distribution and health risk assessment of potentially toxic elements in soils around coal industrial areas: A global meta-analysis. Science of The Total Environment 2019, 713, 135292 .

AMA Style

Xin Xiao, Jixiong Zhang, Hui Wang, Xiaoxun Han, Jing Ma, Yu Ma, Huijun Luan. Distribution and health risk assessment of potentially toxic elements in soils around coal industrial areas: A global meta-analysis. Science of The Total Environment. 2019; 713 ():135292.

Chicago/Turabian Style

Xin Xiao; Jixiong Zhang; Hui Wang; Xiaoxun Han; Jing Ma; Yu Ma; Huijun Luan. 2019. "Distribution and health risk assessment of potentially toxic elements in soils around coal industrial areas: A global meta-analysis." Science of The Total Environment 713, no. : 135292.

Journal article
Published: 05 December 2019 in International Journal of Environmental Research and Public Health
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Soil polycyclic aromatic hydrocarbon (PAH) pollution is a major concern due to its negative impact on soil quality around the world. In China, accurate data on soil PAHs and information on the relationship with anthropogenic activities are limited. In this study, about 30,800 samples from 1833 soil sample sites were reviewed from 306 published reports to build a soil PAHs database. Based on the data obtained, the results demonstrated that 24.11% of surface soils in China are heavily contaminated. Meanwhile, the concentration of soil PAHs varied, in the order of independent mining and industrial areas (IMIA) > urban areas > suburban areas > rural areas, and the spatial distribution in China demonstrated a descending trend from north to south. Moreover, the characteristic ratio and PCA-MLR (principal component analysis-multiple linear regression) analysis demonstrated that coal combustion and vehicular exhaust emissions were the main sources of soil PAH pollution in China. On the other hand, provincial total Σ16PAHs in surface soil were significantly correlated with the per square kilometer GDP (gross domestic product) of industrial land, the per capita GDP, as well as the production and consumption of energy. These results indicate that anthropogenic factors have greatly affected the levels of soil PAHs in China. This study improves our understanding on the status and sources of soil PAH contamination in China, thereby facilitating the implementation of strategies of prevention, control, and remediation of soils.

ACS Style

Siyan Zeng; Jing Ma; Yanhua Ren; Gang-Jun Liu; Qi Zhang; Fu Chen. Assessing the Spatial Distribution of Soil PAHs and their Relationship with Anthropogenic Activities at a National Scale. International Journal of Environmental Research and Public Health 2019, 16, 4928 .

AMA Style

Siyan Zeng, Jing Ma, Yanhua Ren, Gang-Jun Liu, Qi Zhang, Fu Chen. Assessing the Spatial Distribution of Soil PAHs and their Relationship with Anthropogenic Activities at a National Scale. International Journal of Environmental Research and Public Health. 2019; 16 (24):4928.

Chicago/Turabian Style

Siyan Zeng; Jing Ma; Yanhua Ren; Gang-Jun Liu; Qi Zhang; Fu Chen. 2019. "Assessing the Spatial Distribution of Soil PAHs and their Relationship with Anthropogenic Activities at a National Scale." International Journal of Environmental Research and Public Health 16, no. 24: 4928.

Journal article
Published: 04 December 2019 in International Journal of Environmental Research and Public Health
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Soil microorganisms play a key role in global biogeochemical changes. To understand the interactions among soil bacterial communities and their responses to extreme environments, the soil properties and bacterial community diversity were determined in the post-mining ecosystem of the Loess Plateau, China. The results showed that the soil temperature, pH, organic matter, available phosphorus, and available potassium values were significantly reduced in the post-mining cracks area. However, the richness and uniformity of soil bacterial communities increased by about 50% in the post-mining cracks area. Soil microbial community structure and the network interactions tended to be complex and strengthened in the post-mining cracks area. Moreover, soil nutrient loss caused the differences in soil bacterial community structure compositions in the post-mining cracks area. Furthermore, the relationships between soil physicochemical properties and different modules of the soil bacterial molecular ecological network were changed in a complex manner in the post-mining cracks area. This study provides a theoretical basis for adaptive management and response to cracks in post-mining areas and under other extreme conditions.

ACS Style

Zhanbin Luo; Jing Ma; Fu Chen; Xiaoxiao Li; Huping Hou; Shaoliang Zhang. Cracks Reinforce the Interactions among Soil Bacterial Communities in the Coal Mining Area of Loess Plateau, China. International Journal of Environmental Research and Public Health 2019, 16, 4892 .

AMA Style

Zhanbin Luo, Jing Ma, Fu Chen, Xiaoxiao Li, Huping Hou, Shaoliang Zhang. Cracks Reinforce the Interactions among Soil Bacterial Communities in the Coal Mining Area of Loess Plateau, China. International Journal of Environmental Research and Public Health. 2019; 16 (24):4892.

Chicago/Turabian Style

Zhanbin Luo; Jing Ma; Fu Chen; Xiaoxiao Li; Huping Hou; Shaoliang Zhang. 2019. "Cracks Reinforce the Interactions among Soil Bacterial Communities in the Coal Mining Area of Loess Plateau, China." International Journal of Environmental Research and Public Health 16, no. 24: 4892.

Journal article
Published: 04 October 2019 in Agriculture
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Land consolidation of dryland-to-paddy conversion for improving tillage conditions and grain production capacity is widely implemented throughout the world. The conversion affects soil ecological stability, especially the most active soil microorganisms. However, the impacts of the dryland-to-paddy conversion has paid little attention in recent decades. In this study, a pot experiment was used to explore the responses of the microbial community and their interactions with soil properties after rice in the first season (five months). The results indicated that a significant decrease in the topsoil pH, organic matter content, nitrate nitrogen, and ammonical nitrogen, and an increase in soil electrical conductivity (EC) was observed (p < 0.05) after the dryland-to-paddy conversion. The richness and diversity of bacteria and fungi decreased in the short term. The composition of the soil microbial community and the soil microbial dominant bacteria had considerably changed after the conversion. Actinobacteria, Firmicutes, and Olpidiomycota were found to be highly sensitive to the dryland-to-paddy conversion. The soil microbial community structure had extremely significant positive correlations with soil pH, EC, organic matter, nitrate nitrogen, and ammonical nitrogen (p < 0.05). Microorganisms are the most important component of soil nutrient cycling. Converting a large area of dryland to paddy may lead to an imbalance in the soil carbonitride cycle and should be further examined in North China.

ACS Style

Xiaoxiao Li; Jing Ma; Yongjun Yang; Huping Hou; Gang-Jun Liu; Fu Chen. Short-Term Response of Soil Microbial Community to Field Conversion from Dryland to Paddy under the Land Consolidation Process in North China. Agriculture 2019, 9, 216 .

AMA Style

Xiaoxiao Li, Jing Ma, Yongjun Yang, Huping Hou, Gang-Jun Liu, Fu Chen. Short-Term Response of Soil Microbial Community to Field Conversion from Dryland to Paddy under the Land Consolidation Process in North China. Agriculture. 2019; 9 (10):216.

Chicago/Turabian Style

Xiaoxiao Li; Jing Ma; Yongjun Yang; Huping Hou; Gang-Jun Liu; Fu Chen. 2019. "Short-Term Response of Soil Microbial Community to Field Conversion from Dryland to Paddy under the Land Consolidation Process in North China." Agriculture 9, no. 10: 216.

Journal article
Published: 01 October 2019 in Science of The Total Environment
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Soil pollution severely threatens agro-ecosystem stability. It is important to accurately understand the status of farmland pollution in order to protect national food safety and human health. However, information of the combined pollution level of Chinese farmland soil and associated human health risk at the national scale is relatively lacking. In this study, 5597 samples from 1781 farmland soil sites were obtained from 553 reports and combined into pollution databases of heavy metals, organochlorines, and polycyclic aromatic hydrocarbons. Based on the data obtained, this paper demonstrated the current pollution status of farmland soil, and assessed the subsequent human health risk. Results showed that the combined pollution ratio of Chinese farmland soil was 22.10%, with 1.23% of severe pollution level. Moreover, the total non-carcinogenic hazard quotients of farmland soil pollution were within the safety threshold for adults, but there was a slight non-carcinogenic risk for children. For adults, the ratio of total farmland area to total carcinogenic risk quotients above the safety threshold of 1 × 10-5 was only 1.02%, but for children, the ratio was as high as 20.75%. On the other side, food crop and vegetable plantations were the priority control farmland soil compared to other types. Meanwhile, Yunnan, Hunan, Anhui, Henan, and Liaoning were selected as the priority control provinces due to their severe pollutions and high human health risks. This study has provided a comprehensive pollution and health risk assessment. Furthermore, the spatial distribution might provide as the scientific support for accelerating the mapping of soil pollution in China, as well as developing the policy for the contaminated farmland soil management.

ACS Style

Siyan Zeng; Jing Ma; Yongjun Yang; Shaoliang Zhang; Gang-Jun Liu; Fu Chen. Spatial assessment of farmland soil pollution and its potential human health risks in China. Science of The Total Environment 2019, 687, 642 -653.

AMA Style

Siyan Zeng, Jing Ma, Yongjun Yang, Shaoliang Zhang, Gang-Jun Liu, Fu Chen. Spatial assessment of farmland soil pollution and its potential human health risks in China. Science of The Total Environment. 2019; 687 ():642-653.

Chicago/Turabian Style

Siyan Zeng; Jing Ma; Yongjun Yang; Shaoliang Zhang; Gang-Jun Liu; Fu Chen. 2019. "Spatial assessment of farmland soil pollution and its potential human health risks in China." Science of The Total Environment 687, no. : 642-653.

Journal article
Published: 11 May 2019 in Diversity
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Knowledge of the interactions among different microorganisms is important to understand how ecological function transformation is affected by elevated CO2 levels in CO2-enhanced oil recovery (CO2-EOR) sites. Molecular ecological networks were established to reveal the interactions among different microbes of the soil bacterial community with the high-throughput sequencing data of 16S rRNA genes. The results showed that these networks are a powerful tool to identify and explain the interactions and keystone species in the communities under elevated CO2 pressure. The structures of networks under different CO2 leakage concentrations were different as a result of the networks’ topology properties, such as node numbers, topological roles of individual nodes, and network hubs. These indicators imply that the interactions among different groups were obviously changed. Moreover, changes in the network structure were significantly correlated with soil pH value, which might suggest that the large CO2 leakage affected the soil ecosystem functions by changing the network interactions. Additionally, the key microbial populations such as Bacteroidetes and Proteobacteria were distinguished based on network topology to reveal community structure and ecosystem functioning. The work developed in this study could help microbiologists to address some research questions that could not be approached previously, and, hence, might represent a new area of research for microbial ecology.

ACS Style

Jing Ma; Zhanbin Luo; Fu Chen; Run Chen; Qianlin Zhu; Shaoliang Zhang. Impacts of Elevated CO2 Levels on the Soil Bacterial Community in a Natural CO2-Enhanced Oil Recovery Area. Diversity 2019, 11, 77 .

AMA Style

Jing Ma, Zhanbin Luo, Fu Chen, Run Chen, Qianlin Zhu, Shaoliang Zhang. Impacts of Elevated CO2 Levels on the Soil Bacterial Community in a Natural CO2-Enhanced Oil Recovery Area. Diversity. 2019; 11 (5):77.

Chicago/Turabian Style

Jing Ma; Zhanbin Luo; Fu Chen; Run Chen; Qianlin Zhu; Shaoliang Zhang. 2019. "Impacts of Elevated CO2 Levels on the Soil Bacterial Community in a Natural CO2-Enhanced Oil Recovery Area." Diversity 11, no. 5: 77.

Journal article
Published: 13 February 2019 in Journal of Hazardous Materials
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This work investigated the influences of citric acid and methyl-β-cyclodextrin (MCD) as enhancing agents during the electrokinetics (EK)-persulfate process on the remediation of soil artificially contaminated with decabromodiphenyl ether (BDE-209) and copper (Cu) with an initial concentration of 50 and 1000 mg/kg, respectively. The results clearly demonstrate the efficiency of the process while at the same time, the distribution of the residual contaminants in soil and the EK parameters were greatly influenced by the presence of persulfate, MCD and citric acid. The results show that there was significant removal of BDE-209 and Cu from the soil. MCD-assisted process gave the highest BDE-209 removal (88.6%) and the third largest Cu removal (54.3%) from the soil. Comparatively, the highest Cu removal (92.5%) and the second largest BDE-209 removal (85.6%) were achieved by the joint application of MCD and citric acid in anolyte during the EK-persulfate treatment. MCD and citric acid could increase soil electrical current and electroosmotic flow during EK. The alkalization of soil near cathode was alleviated by the acidic byproducts of persulfate decomposition which could be transported to the soil by electroosmosis and electromigration. This integration process may provide a green efficient technology for remediating co-contaminated soil.

ACS Style

Fu Chen; Xiaoxiao Li; Jing Ma; Junfeng Qu; Yongjun Yang; Shaoliang Zhang. Remediation of soil co-contaminated with decabromodiphenyl ether (BDE-209) and copper by enhanced electrokinetics-persulfate process. Journal of Hazardous Materials 2019, 369, 448 -455.

AMA Style

Fu Chen, Xiaoxiao Li, Jing Ma, Junfeng Qu, Yongjun Yang, Shaoliang Zhang. Remediation of soil co-contaminated with decabromodiphenyl ether (BDE-209) and copper by enhanced electrokinetics-persulfate process. Journal of Hazardous Materials. 2019; 369 ():448-455.

Chicago/Turabian Style

Fu Chen; Xiaoxiao Li; Jing Ma; Junfeng Qu; Yongjun Yang; Shaoliang Zhang. 2019. "Remediation of soil co-contaminated with decabromodiphenyl ether (BDE-209) and copper by enhanced electrokinetics-persulfate process." Journal of Hazardous Materials 369, no. : 448-455.

Journal article
Published: 29 August 2018 in Sustainability
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China has widely implemented land consolidation, which was expected to increase the amount of cultivated land and enhance grain yields. Key components of land consolidation include filling mall waterbodies and leveling land, both of which have strong impacts on the environment in the Yangtze River Delta. The impacts of land consolidation on soil ecology and agricultural production are not yet clear. Here, we conducted a field survey of soil properties and rice growth to detect the effects of land consolidation in the first growing season. The normalized difference vegetation index (NDVI) was used to analyze the remote sensing data. We found significant differences in the soil properties under different types of land leveling, with a general NDVI pattern of: control > borrowed topsoil area > filled waterbodies area > topsoil cutting area. We found significant heterogeneity in rice NDVI after land consolidation. The NDVI of rice had extremely significant positive correlations with soil organic matter and available zinc. The spatial variation in soil properties caused by land consolidation was a dominant factor leading to the heterogeneity of rice NDVI. Fertilizing soil and strengthening field management should be adopted to provide more ecological services while increasing quantity.

ACS Style

Xiaoxiao Li; Man Yu; Jing Ma; Zhanbin Luo; Fu Chen; Yongjun Yang. Identifying the Relationship between Soil Properties and Rice Growth for Improving Consolidated Land in the Yangtze River Delta, China. Sustainability 2018, 10, 3072 .

AMA Style

Xiaoxiao Li, Man Yu, Jing Ma, Zhanbin Luo, Fu Chen, Yongjun Yang. Identifying the Relationship between Soil Properties and Rice Growth for Improving Consolidated Land in the Yangtze River Delta, China. Sustainability. 2018; 10 (9):3072.

Chicago/Turabian Style

Xiaoxiao Li; Man Yu; Jing Ma; Zhanbin Luo; Fu Chen; Yongjun Yang. 2018. "Identifying the Relationship between Soil Properties and Rice Growth for Improving Consolidated Land in the Yangtze River Delta, China." Sustainability 10, no. 9: 3072.

Journal article
Published: 08 August 2018 in Sustainability
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A new environmental ban has forced the restructure of open dumps in China since 1 July 2011. A technical process was established in this study that is feasible for the upgrade of open dumps through restructuring. The feasibility of restructuring and the benefit of greenhouse gas emission reductions were assessed according to field surveys of five landfills and four dumps in Nanjing. The results showed that the daily processing capacities of the existing landfills have been unable to meet the growth of municipal solid waste (MSW), making restructuring of the landfills imperative. According to an assessment of the technical process, only four sites in Nanjing were suitable for upgrading. Restructuring the Jiaozishan landfill effectively reduced the leachate generation rate by 5.84% under its scale when expanded by 60.7% in 2015. CO2 emissions were reduced by approximately 55,000–86,000 tons per year, in which biogas power generation replaced fossil fuels Fossil fuels accounted for the largest proportion, up to 45,000–60,000 tons. Photovoltaic power generation on the overlying land has not only reduced CO2 emissions to 26,000–30,000 tons per year but has also brought in continuing income from the sale of electricity. The funds are essential for developing countries such as China, which lack long-term financial support for landfill management after closure.

ACS Style

Jing Ma; Zhanbin Luo; Fu Chen; Qianlin Zhu; Shaoliang Zhang; Gang-Jun Liu. A Practical Approach to Reduce Greenhouse Gas Emissions from Open Dumps through Infrastructure Restructuring: A Case Study in Nanjing City, China. Sustainability 2018, 10, 2804 .

AMA Style

Jing Ma, Zhanbin Luo, Fu Chen, Qianlin Zhu, Shaoliang Zhang, Gang-Jun Liu. A Practical Approach to Reduce Greenhouse Gas Emissions from Open Dumps through Infrastructure Restructuring: A Case Study in Nanjing City, China. Sustainability. 2018; 10 (8):2804.

Chicago/Turabian Style

Jing Ma; Zhanbin Luo; Fu Chen; Qianlin Zhu; Shaoliang Zhang; Gang-Jun Liu. 2018. "A Practical Approach to Reduce Greenhouse Gas Emissions from Open Dumps through Infrastructure Restructuring: A Case Study in Nanjing City, China." Sustainability 10, no. 8: 2804.

Journal article
Published: 02 July 2018 in Sustainability
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Improvement of soil quality after land reclamation is a key concern in mining areas. However, the characteristics and internal mechanisms of variation of bacterial community structure over different reclamation periods are currently unclear. The recovery and evolution of soil microbial community structure are important indicators of the level of soil quality improvement of reclaimed soil. Therefore, this study investigated soil samples from coal gangue-filled land after reclamation periods of 1, 6, and 15 years. To accomplish this, 16S rRNA gene libraries were produced to determine the microbial community composition of the soils. In addition, various soil microbial community characteristics in the filled reclamation areas were compared with soil samples from areas unaffected by coal mining. The results showed the following: (1) The diversity and abundance of bacterial communities in reclaimed soils was slightly different from that of natural soils. However, the soil bacterial community structure was highly similar to natural soil after a 15-year reclamation period; therefore, the recovery of bacterial communities can be used as an indicator of the effects of rehabilitation. (2) Some soil physicochemical properties are significantly correlated with the main bacteria in the soil. (3) The dominant bacteria included members of the phyla Firmicutes and Proteobacteria, as well as members of the genera Bacillus, Enterococcus, and Lactococcus. Taken together, the results of this study indicated that the application of microbial remediation technology can be used to adjust the soil microbial community structure, improve soil quality, and shorten the soil recovery period.

ACS Style

Huping Hou; Chen Wang; Zhongyi Ding; Shaoliang Zhang; Yongjun Yang; Jing Ma; Fu Chen; Jinrong Li. Variation in the Soil Microbial Community of Reclaimed Land over Different Reclamation Periods. Sustainability 2018, 10, 2286 .

AMA Style

Huping Hou, Chen Wang, Zhongyi Ding, Shaoliang Zhang, Yongjun Yang, Jing Ma, Fu Chen, Jinrong Li. Variation in the Soil Microbial Community of Reclaimed Land over Different Reclamation Periods. Sustainability. 2018; 10 (7):2286.

Chicago/Turabian Style

Huping Hou; Chen Wang; Zhongyi Ding; Shaoliang Zhang; Yongjun Yang; Jing Ma; Fu Chen; Jinrong Li. 2018. "Variation in the Soil Microbial Community of Reclaimed Land over Different Reclamation Periods." Sustainability 10, no. 7: 2286.