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Fu Chen
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.

Journal article
Published: 30 April 2021 in Journal of Environmental Chemical Engineering
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The microbial fuel cells (MFCs) were developed in the present study to remove copper (Cu) and decabromodiphenyl ether (BDE-209) from an artificially contaminated soil. The performance of electricity generation, BDE-209 degradation and Cu removal were investigated. Soil enzyme activity, BDE-209 mineralization and microbial community structures were analyzed. Experimental results showed that the removal of BDE-209 and Cu was effectively enhanced by the application of soil MFCs. After 60-day MFC operation, total Cu was removed by 69.2%, 66.4% and 62.5% for an initial Cu content of 250, 500 and 1000 mg/kg, respectively. More than 80% Cu removed was transformed to pure copper and deposited on the cathode plates. Soil enzyme activity and BDE-209 removal (85.5%) were both highest in the case of 500 mg/kg Cu. Genomic sequencing results indicates that electrogenic and debromination bacteria survived together in the soil MFCs. The MFC operation promoted the growth and reproduction of electrogenic bacteria. These results demonstrate that the soil MFCs can be employed as a durable and effective approach for detoxicating organic-metal co-contaminated soil.

ACS Style

Jing Ma; Qi Zhang; Fu Chen; Shijian Lu; Yifei Wang; Huagen Liang. Simultaneous removal of copper and biodegradation of BDE-209 with soil microbial fuel cells. Journal of Environmental Chemical Engineering 2021, 9, 105593 .

AMA Style

Jing Ma, Qi Zhang, Fu Chen, Shijian Lu, Yifei Wang, Huagen Liang. Simultaneous removal of copper and biodegradation of BDE-209 with soil microbial fuel cells. Journal of Environmental Chemical Engineering. 2021; 9 (4):105593.

Chicago/Turabian Style

Jing Ma; Qi Zhang; Fu Chen; Shijian Lu; Yifei Wang; Huagen Liang. 2021. "Simultaneous removal of copper and biodegradation of BDE-209 with soil microbial fuel cells." Journal of Environmental Chemical Engineering 9, no. 4: 105593.

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.

Research article
Published: 04 February 2021 in Frontiers of Environmental Science & Engineering
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This work investigates the influence of electrokinetic-bioremediation (EK-BIO) on remediating soil polluted by persistent organic pollutants (POPs) and heavy metals (mainly Cu, Pb and Ni), originated from electronic waste recycling activity. The results demonstrate that most of POPs and metals were removed from the soil. More than 60% of metals and 90% of POPs in the soil were removed after a 30-day EK-BIO remediation assisted by citrate. A citrate sodium concentration of 0.02 g/L was deemed to be suitable because higher citrate did not significantly improve treatment performance whereas increasing dosage consumption. Citrate increased soil electrical current and electroosmotic flow. After remediation, metal residues mainly existed in stable and low-toxic states, which could effectively lower the potential hazard of toxic metals to the surrounding environment and organisms. EK-BIO treatment influenced soil microbial counts, dehydrogenase activity and community structure.

ACS Style

Fu Chen; Qi Zhang; Jing Ma; Qianlin Zhu; Yifei Wang; Huagen Liang. Effective remediation of organic-metal co-contaminated soil by enhanced electrokinetic-bioremediation process. Frontiers of Environmental Science & Engineering 2021, 15, 1 -10.

AMA Style

Fu Chen, Qi Zhang, Jing Ma, Qianlin Zhu, Yifei Wang, Huagen Liang. Effective remediation of organic-metal co-contaminated soil by enhanced electrokinetic-bioremediation process. Frontiers of Environmental Science & Engineering. 2021; 15 (6):1-10.

Chicago/Turabian Style

Fu Chen; Qi Zhang; Jing Ma; Qianlin Zhu; Yifei Wang; Huagen Liang. 2021. "Effective remediation of organic-metal co-contaminated soil by enhanced electrokinetic-bioremediation process." Frontiers of Environmental Science & Engineering 15, no. 6: 1-10.

Journal article
Published: 01 January 2021 in 资源科学
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ACS Style

Haochen Yu; Siyan Zeng; Qingbin Wang; Jin Dai; Zhengfu Bian; Fu Chen. Forecast on China’s cultivated land protection baseline in the new era by multi- scenario simulations. 资源科学 2021, 43, 1222 -1233.

AMA Style

Haochen Yu, Siyan Zeng, Qingbin Wang, Jin Dai, Zhengfu Bian, Fu Chen. Forecast on China’s cultivated land protection baseline in the new era by multi- scenario simulations. 资源科学. 2021; 43 (6):1222-1233.

Chicago/Turabian Style

Haochen Yu; Siyan Zeng; Qingbin Wang; Jin Dai; Zhengfu Bian; Fu Chen. 2021. "Forecast on China’s cultivated land protection baseline in the new era by multi- scenario simulations." 资源科学 43, no. 6: 1222-1233.

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.

Journal article
Published: 06 July 2020 in International Journal of Environmental Research and Public Health
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Since the Silk-road Economic belt initiatives were proposed, Xinjiang has provided a vital strategic link between China and Central Asia and even Eurasia. However, owing to the weak and vulnerable ecosystem in this arid region, even a slight climate change would probably disrupt vegetation dynamics and land cover change. Thus, there is an urgent need to determine the Normalized Difference Vegetation Index (NDVI) and Land-use/Land-cover (LULC) responses to climate change. Here, the extreme-point symmetric mode decomposition (ESMD) method and linear regression method (LRM) were applied to recognize the variation trends of the NDVI, temperature, and precipitation between the growing season and other seasons. Combining the transfer matrix of LULC, the Pearson correlation analysis was utilized to reveal the response of NDVI to climate change and climate extremes. The results showed that: (1) Extreme temperature showed greater variation than extreme precipitation. Both the ESMD and the LRM exhibited an increased volatility trend for the NDVI, with the significant improvement regions mainly located in the margin of basins. (2) Since climate change had a warming trend, the permanent snow has been reduced by 20,436 km2. The NDVI has a higher correlation to precipitation than temperature. Furthermore, the humid trend could provide more suitable conditions for vegetation growth, but the warm trend might prevent vegetation growth. Spatially, the response of the NDVI in North Xinjiang (NXC) was more sensitive to precipitation than that in South Xinjiang (SXC). Seasonally, the NDVI has a greater correlation to precipitation in spring and summer, but the opposite occurs in autumn. (3) The response of the NDVI to extreme precipitation was stronger than the response to extreme temperature. The reduction in diurnal temperature variation was beneficial to vegetation growth. Therefore, continuous concentrated precipitation and higher night-time-temperatures could enhance vegetation growth in Xinjiang. This study could enrich the understanding of the response of land cover change and vegetation dynamics to climate extremes and provide scientific support for eco-environment sustainable management in the arid regions.

ACS Style

Haochen Yu; Zhengfu Bian; Shouguo Mu; Junfang Yuan; Fu Chen. Effects of Climate Change on Land Cover Change and Vegetation Dynamics in Xinjiang, China. International Journal of Environmental Research and Public Health 2020, 17, 4865 .

AMA Style

Haochen Yu, Zhengfu Bian, Shouguo Mu, Junfang Yuan, Fu Chen. Effects of Climate Change on Land Cover Change and Vegetation Dynamics in Xinjiang, China. International Journal of Environmental Research and Public Health. 2020; 17 (13):4865.

Chicago/Turabian Style

Haochen Yu; Zhengfu Bian; Shouguo Mu; Junfang Yuan; Fu Chen. 2020. "Effects of Climate Change on Land Cover Change and Vegetation Dynamics in Xinjiang, China." International Journal of Environmental Research and Public Health 17, no. 13: 4865.

Journal article
Published: 28 April 2020 in Sustainability
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Land consolidation is a key measure in the implementation of agricultural sustainability and has a strategic importance in farmland fragmentation reduction and rural revitalization. In order to understand spatiotemporal patterns of land consolidation implementation and their influences at a large scale, a comprehensive evaluation of 1046 land consolidation projects was conducted in Jiangsu Province, China. The results of this study showed that the construction scale (CS) and investment amount (IA) rose in waves in Jiangsu province during the period 2001–2017, while the newly increased farmland rate (NIFR) continued to decline. Spatial patterns of land consolidation aggregated, whereas the scale and the kernel density of the newly increased farmland area (NIFA) was differentiated in different time periods. In addition, the regional differentiation was significant. The gravity center of CS, IA, and NIFA moved with an overall trend from South Jiangsu to North Jiangsu, and finally stopped at the Li-Xia River plain area in North Jiangsu. The key factors that promoted land consolidation included natural farmland quality and the proportion of the primary industry production in GDP. The potential of NIFA, the farmland production amount, and the income of the financial transferring payment were also important factors. Spatial patterns were initially influenced by natural conditions and were later influenced more significantly by economic and policy conditions. In the future, differentiated land consolidation policy oriented by public involvement should be formulated to improve new frameworks of system implementation, as well as to provide evidence for spatial configuration, district cooperation, policy adjustment, and the systematic improvement of sustainable land consolidation.

ACS Style

Xiaoping Ge; Feng Zhu; Yongjun Yang; Gangjun Liu; Fu Chen. Probing Influence Factors of Implementation Patterns for Sustainable Land Consolidation: Insights from Seventeen Years of Practice in Jiangsu Province, China. Sustainability 2020, 12, 3576 .

AMA Style

Xiaoping Ge, Feng Zhu, Yongjun Yang, Gangjun Liu, Fu Chen. Probing Influence Factors of Implementation Patterns for Sustainable Land Consolidation: Insights from Seventeen Years of Practice in Jiangsu Province, China. Sustainability. 2020; 12 (9):3576.

Chicago/Turabian Style

Xiaoping Ge; Feng Zhu; Yongjun Yang; Gangjun Liu; Fu Chen. 2020. "Probing Influence Factors of Implementation Patterns for Sustainable Land Consolidation: Insights from Seventeen Years of Practice in Jiangsu Province, China." Sustainability 12, no. 9: 3576.

Journal article
Published: 14 April 2020 in Water
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Removal of aquatic cadmium ions using biochar is a low-cost method, but the results are usually not satisfactory. Modified biochar, which can be a low-cost and efficient material, is urgently required for Cd-polluted water and soil remediation. Herein, poplar bark (SB) and poplar sawdust (MB) were used as raw materials to prepare modified biochar, which is rich in N- and S- containing groups, i.e., TSBC-600 and TMBC-600, using a co-pyrolysis method with thiourea. The adsorption characteristics of Cd2+ in simulated wastewater were explored. The results indicated that the modification optimized the surface structure of biochar, Cd2+ adsorption process by both TSBC-600 and TMBC-600 was mainly influenced by the initial pH, biochar dosage, and contact time, sthe TSBC-600 showed a higher adsorption capacity compared to TMBC-600 under different conditions. The Langmuir adsorption isotherm model and pseudo-second-order kinetic model were more consistent with the adsorption behavior of TSBC-600 and TMBC-600 to Cd2+, the maximum adsorption capacity of TSBC-600 and TMBC-600 calculated by the Langmuir adsorption isotherm model was 19.998 mg/g and 9.631 mg/g, respectively. The modification method for introducing N and S into biochar by the co-pyrolysis of biomass and thiourea enhanced the removal rate of aquatic cadmium ions by biochar.

ACS Style

Yanfeng Zhu; Huageng Liang; Ruilian Yu; Gongren Hu; Fu Chen. Removal of Aquatic Cadmium Ions Using Thiourea Modified Poplar Biochar. Water 2020, 12, 1117 .

AMA Style

Yanfeng Zhu, Huageng Liang, Ruilian Yu, Gongren Hu, Fu Chen. Removal of Aquatic Cadmium Ions Using Thiourea Modified Poplar Biochar. Water. 2020; 12 (4):1117.

Chicago/Turabian Style

Yanfeng Zhu; Huageng Liang; Ruilian Yu; Gongren Hu; Fu Chen. 2020. "Removal of Aquatic Cadmium Ions Using Thiourea Modified Poplar Biochar." Water 12, no. 4: 1117.

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.

Energy materials
Published: 25 March 2020 in Journal of Materials Science
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Lithium–oxygen (Li-O2) batteries have received wide attention due to their high specific capacity. In non-aqueous Li-O2 batteries, water is generally considered as a harmful pollutant, which will cause parasitic reaction to generate LiOH. However, it is difficult to decompose in the charging process, resulting in premature failure of battery and serious impact on the cycle stability. Therefore, it is of great significance to explore efficient catalysts to decompose LiOH for the future commercialization of Li-air batteries. In this work, a novel three-dimensional (3D) self-standing [email protected] octahedron/biochar is used as the cathode of Li-O2 battery. Ex situ XRD and XPS identify that the discharge products were LiOH rather than Li2O2. However, the specific capacity of Li-O2 battery with [email protected] still reaches up to 14.1 mAh cm-2 at a current density of 0.1 mA cm-2 and sustains a stable cycling of 136 times with a limited capacity of 0.5 mAh cm−2 at 0.1 mA cm−2. It is found that the charge specific capacity of the battery with preloading LiOH in the cathode is close to the actual theoretical value, proving that [email protected] could effectively decompose LiOH.

ACS Style

Huagen Liang; Linhui Jia; Fu Chen. Three-dimensional self-standing [email protected] octahedron/biochar cathode for non-aqueous Li-O2 batteries: efficient catalysis for reversible formation and decomposition of LiOH. Journal of Materials Science 2020, 55, 7792 -7804.

AMA Style

Huagen Liang, Linhui Jia, Fu Chen. Three-dimensional self-standing [email protected] octahedron/biochar cathode for non-aqueous Li-O2 batteries: efficient catalysis for reversible formation and decomposition of LiOH. Journal of Materials Science. 2020; 55 (18):7792-7804.

Chicago/Turabian Style

Huagen Liang; Linhui Jia; Fu Chen. 2020. "Three-dimensional self-standing [email protected] octahedron/biochar cathode for non-aqueous Li-O2 batteries: efficient catalysis for reversible formation and decomposition of LiOH." Journal of Materials Science 55, no. 18: 7792-7804.

Journal article
Published: 20 March 2020 in Chemosphere
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Laboratory experiments were performed to investigate the efficiency of a simultaneous metal stabilization, persulfate oxidation and bioremediation for decontaminating polybrominated diphenyl ethers (PBDEs) and toxic metals from an actual soil polluted by the recycling activity of electronic waste. Biochar and bentonite were applied to the soil for immobilizing heavy metals (Cu, Pb, Zn and Ni). It was found that the toxicity level declined most significantly in the case of 20 g/kg biochar +20 g/kg bentonite. A low dose of persulfate (20 mmol/kg soil) was found to be suitable for oxidizing soil PBDEs and enhancing the bioavailability of PBDEs residue. Persulfate oxidation reduced the soil organic matter content, and caused dramatic decrease of bacterial density. Nevertheless, microbial activity and number recovered on the whole during 90 days of bioremediation. Finally, a degradation efficiency of 94.6% and a mineralization efficiency of 60.3% were obtained by the hybrid treatment scheme. The pyrosequencing analysis indicates that soil bacterial community changed obviously during the treatments, and there was an enrichment of PBDE-degrading populations during bioremediation relative to that of oxidized soil.

ACS Style

Jing Ma; Qi Zhang; Fu Chen; Qianlin Zhu; Yifei Wang; Gangjun Liu. Remediation of PBDEs-metal co-contaminated soil by the combination of metal stabilization, persulfate oxidation and bioremediation. Chemosphere 2020, 252, 126538 .

AMA Style

Jing Ma, Qi Zhang, Fu Chen, Qianlin Zhu, Yifei Wang, Gangjun Liu. Remediation of PBDEs-metal co-contaminated soil by the combination of metal stabilization, persulfate oxidation and bioremediation. Chemosphere. 2020; 252 ():126538.

Chicago/Turabian Style

Jing Ma; Qi Zhang; Fu Chen; Qianlin Zhu; Yifei Wang; Gangjun Liu. 2020. "Remediation of PBDEs-metal co-contaminated soil by the combination of metal stabilization, persulfate oxidation and bioremediation." Chemosphere 252, no. : 126538.

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.

Preprint content
Published: 07 February 2020
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Background: Understanding the interactions among soil microbial species and how they responded to disturbances are essential to ecological restoration and resilience in the semi-humid and semi-arid 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 in different locations. 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. Results: Bacterial community diversity and composition differed dramatically among different locations, such as the semi-humid and semi-arid disturbed mining areas. Additionally, based on the network topology, we distinguished key microbial populations across these mining areas, which belonged to Proteobacteria , Acidobacteria , Actinobacteria , and Chloroflexi . Moreover, the network modules were significantly correlated with some environmental factors, which suggested that microbial interactions might change the soil resilience to the interference resulted from damaged mining areas, then furtherly affect soil ecosystem functions. Conclusions: This study showed that network interactions were completely different across the different mining areas. The keystone species in different mining areas suggested that selected different microbial communities to resist the adverse environment. Moreover, the results of trait-based module significances showed that several environmental factors were significantly correlated with some keystone species. Our study also implied that the complex network of microbial interaction might drive the stand resilience of soil bacteria in the semi-humid and semi-arid disturbed mining areas.

ACS Style

Jing Ma; Yongqiang Lu; Fu Chen; Xiaoxiao Li; Shaoliang Zhang; Hui Wang. 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, Yongqiang Lu, Fu Chen, Xiaoxiao Li, Shaoliang Zhang, Hui Wang. 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; Yongqiang Lu; Fu Chen; Xiaoxiao Li; Shaoliang Zhang; Hui Wang. 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: 28 January 2020 in Environmental Pollution
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In this work, soil contaminated by petroleum resins was remediated by electrokinetic-bioremediation (EK-BIO) technology for 60 days. A microbial consortium, comprising Rhizobium sp., Arthrobacter globiformis, Clavibacter xyli, Curtobacterium flaccumfaciens, Bacillus subtilis, Pseudomonas aeruginosa and Bacillus sp., was used to enhance the treatment performance. The results indicate that resin removal and phytotoxicity reduction were highest in the inoculated EK process, wherein 23.6% resins was removed from the soil and wheat seed germination ratio was increased from 47% to around 90% after treatment. The microbial counts, soil basal respiration and dehydrogenase activity were positively related to resins degradation, and they could be enhanced by direct current electric field. After remediation, the C/H ratio of resins decreased from 8.03 to 6.47. Furthermore, the structure of resins was analyzed by Fourier-transform infrared spectroscopy, elemental analysis, and 1H nuclear magnetic resonance (1H NMR) before and after treatment. It was found that the changes of the structure of resins took place during EK-BIO treatment and finally led to the reduction of aromaticity, aromaticity condensation and phytotoxicity.

ACS Style

Jing Ma; Qi Zhang; Fu Chen; Qianlin Zhu; Yifei Wang; Gangjun Liu. Remediation of resins-contaminated soil by the combination of electrokinetic and bioremediation processes. Environmental Pollution 2020, 260, 114047 .

AMA Style

Jing Ma, Qi Zhang, Fu Chen, Qianlin Zhu, Yifei Wang, Gangjun Liu. Remediation of resins-contaminated soil by the combination of electrokinetic and bioremediation processes. Environmental Pollution. 2020; 260 ():114047.

Chicago/Turabian Style

Jing Ma; Qi Zhang; Fu Chen; Qianlin Zhu; Yifei Wang; Gangjun Liu. 2020. "Remediation of resins-contaminated soil by the combination of electrokinetic and bioremediation processes." Environmental Pollution 260, no. : 114047.

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.

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.