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Dr. Taihui Zheng
Jiangxi Provincial Institute of Soil and Water Conservation

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0 Soil Science
0 organic carbon
0 soil and water comservation
0 Soil aggregates
0 neonicotinoids

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Journal article
Published: 17 July 2021 in Chemosphere
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Continual input of neonicotinoid insecticides occurs in the citrus orchards from southern China. However, it is still unknown about the variations in the distribution and accumulation of neonicotinoids in soil profiles along a long-term chronosequence of cultivation and the driving factors contributing to these shifts. Here, changes of neonicotinoids in the 0–100 cm soil profiles with distinct orchard cultivation age (1, 10, and 20 years) were investigated, and their related factors were further determined. The results showed that the total levels of five target neonicotinoids (∑5NEOs) in the soil profiles were in the range of 0–25.76 ng/g dw. Imidacloprid was the most dominating neonicotinoid, followed by thiamethoxam. We observed higher neonicotinoid accumulations in the soil profiles from the citrus orchards after 10 and 20 years of cultivation. Neonicotinoids migrated deeper into the soil profiles in orchards with a longer time since cultivation. Imidacloprid, thiamethoxam, and the total amount of neonicotinoid (∑5NEOs) were mainly affected by the cultivation age of citrus orchards (accounting for 58.9% variance; P < 0.001); whereas clothianidin, acetamiprid, and thiacloprid were mainly influenced by soil depths (accounting for 66.9–85.2% variance; P < 0.05). Redundancy analyzes further indicated that the enhanced accumulation of neonicotinoids was mainly correlated with the increase of soil organic carbon (SOC) content and soil porosity, and the reduction of bulk density in the profiles of citrus orchards with increasing cultivation age. This study highlights the finding that we should give more concerns about the contamination and ecological risks of neonicotinoids in the orchards with a long cultivation age.

ACS Style

Taihui Zheng; Jie Zhang; Chongjun Tang; Yongfen Zhang; Jian Duan. Persistence and vertical distribution of neonicotinoids in soils under different citrus orchards chrono sequences from southern China. Chemosphere 2021, 286, 131584 .

AMA Style

Taihui Zheng, Jie Zhang, Chongjun Tang, Yongfen Zhang, Jian Duan. Persistence and vertical distribution of neonicotinoids in soils under different citrus orchards chrono sequences from southern China. Chemosphere. 2021; 286 ():131584.

Chicago/Turabian Style

Taihui Zheng; Jie Zhang; Chongjun Tang; Yongfen Zhang; Jian Duan. 2021. "Persistence and vertical distribution of neonicotinoids in soils under different citrus orchards chrono sequences from southern China." Chemosphere 286, no. : 131584.

Journal article
Published: 17 January 2021 in Sustainability
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Sloping farmland is prevalent in hilly red soil areas of South China. Improper tillage patterns induce decreased soil organic matter, soil aggregate breakdown, and nutrient imbalance, thereby restricting crop production. However, the stoichiometric characteristics could reflect the nutrient availability which was mostly studied on bulk soil. The stoichiometric characteristics of soil aggregates with multiple functions in farmlands has rarely been studied. The study was to reveal the impact of tillage patterns on the size distribution, nutrient levels, and stoichiometric ratios of soil aggregates after 20 years’ cultivation. Soil samples of 0–20 cm and 20–40 cm from five tillage patterns, bare-land control (BL), longitudinal-ridge tillage (LR), conventional tillage + straw mulching (CS), cross-ridge tillage (CR), and longitudinal-ridge tillage + hedgerows (LH) were collected. The elemental content (C, N and P) and soil aggregate size distribution were determined, and the stoichiometric ratios were subsequently calculated. Through our analysis and study, it was found that the nutrient content of >2 mm soil aggregates in all plots was the highest. In the hedgerow plots, >2 mm water-stable soil aggregate content was increased. Therefore, LH plots have the highest content of organic matter and nutrients. After 20 years of cultivation, stoichiometric ratio of each plot showed different changes on soil aggregates at different levels. the C:N, C:P, and N:P ratios are lower than the national average of cultivated land. Among of them, the stoichiometric ratio in the LH plot is closer to the mean and showed better water-stable aggregate enhancement. Therefore, longitudinal-ridge tillage + hedgerows can be recommended as a cultivation measure. This study provides a reference for determining appropriate tillage measures, balancing nutrient ratios, and implementing rational fertilization.

ACS Style

Jie Zhang; Yaojun Liu; Taihui Zheng; Xiaomin Zhao; Hongguang Liu; Yongfen Zhang. Nutrient and Stoichiometric Characteristics of Aggregates in a Sloping Farmland Area under Different Tillage Practices. Sustainability 2021, 13, 890 .

AMA Style

Jie Zhang, Yaojun Liu, Taihui Zheng, Xiaomin Zhao, Hongguang Liu, Yongfen Zhang. Nutrient and Stoichiometric Characteristics of Aggregates in a Sloping Farmland Area under Different Tillage Practices. Sustainability. 2021; 13 (2):890.

Chicago/Turabian Style

Jie Zhang; Yaojun Liu; Taihui Zheng; Xiaomin Zhao; Hongguang Liu; Yongfen Zhang. 2021. "Nutrient and Stoichiometric Characteristics of Aggregates in a Sloping Farmland Area under Different Tillage Practices." Sustainability 13, no. 2: 890.

Journal article
Published: 01 December 2020 in Soil and Tillage Research
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The priming effect in soils is known to depend in part on the size distribution and decomposability of aggregate-associated soil organic carbon. However, the biochar-induced carbon mineralization priming effects within aggregates of different size classes are poorly understood. In this study, the bulk soils were firstly separated into three fractions (>1 mm macroaggregate, 0.25−1 mm macroaggregate, and 0.25 mm macroaggregates. However, a weak negative priming effect was only detected after 180 days at a high biochar level in the 0.25 mm macroaggregates has probably been protected by biochar amended and made unavailable. Our study indicates that the priming effects of biochar on the soil organic carbon in Ultisols depend on the aggregate size.

ACS Style

Taihui Zheng; Jie Zhang; Chongjun Tang; Kaitao Liao; Liping Guo. Positive and negative priming effects in an Ultisol in relation to aggregate size class and biochar level. Soil and Tillage Research 2020, 208, 104874 .

AMA Style

Taihui Zheng, Jie Zhang, Chongjun Tang, Kaitao Liao, Liping Guo. Positive and negative priming effects in an Ultisol in relation to aggregate size class and biochar level. Soil and Tillage Research. 2020; 208 ():104874.

Chicago/Turabian Style

Taihui Zheng; Jie Zhang; Chongjun Tang; Kaitao Liao; Liping Guo. 2020. "Positive and negative priming effects in an Ultisol in relation to aggregate size class and biochar level." Soil and Tillage Research 208, no. : 104874.

Journal article
Published: 23 September 2020 in Water
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Quantitatively figuring out the effects of climate and land-use change on water resources and their components is essential for water resource management. This study investigates the effects of climate and land-use change on blue and green water and their components in the upper Ganjiang River basin from the 1980s to the 2010s by comparing the simulated changes in blue and green water resources by using a Soil and Water Assessment Tool (SWAT) model forced by five climate and land-use scenarios. The results suggest that the blue water flow (BWF) decreased by 86.03 mm year−1, while green water flow (GWF) and green water storage (GWS) increased by 8.61 mm year−1 and 12.51 mm year−1, respectively. The spatial distribution of blue and green water was impacted by climate, wind direction, topography, and elevation. Climate change was the main factor affecting blue and green water resources in the basin; land-use change had strong effects only locally. Precipitation changes significantly amplified the BWF changes. The proportion of surface runoff in BWF was positively correlated with precipitation changes; lateral flow showed the opposite tendency. Higher temperatures resulted in increased GWF and decreased BWF, both of which were most sensitive to temperature increases up to 1 °C. All agricultural land and forestland conversion scenarios resulted in decreased BWF and increased GWF in the watershed. GWS was less affected by climate and land-use change than GWF and BWF, and the trends in GWS were not significant. The study provides a reference for blue and green water resource management in humid areas.

ACS Style

Yongfen Zhang; Chongjun Tang; Aizhong Ye; Taihui Zheng; Xiaofei Nie; Anguo Tu; Hua Zhu; Shiqiang Zhang. Impacts of Climate and Land-Use Change on Blue and Green Water: A Case Study of the Upper Ganjiang River Basin, China. Water 2020, 12, 2661 .

AMA Style

Yongfen Zhang, Chongjun Tang, Aizhong Ye, Taihui Zheng, Xiaofei Nie, Anguo Tu, Hua Zhu, Shiqiang Zhang. Impacts of Climate and Land-Use Change on Blue and Green Water: A Case Study of the Upper Ganjiang River Basin, China. Water. 2020; 12 (10):2661.

Chicago/Turabian Style

Yongfen Zhang; Chongjun Tang; Aizhong Ye; Taihui Zheng; Xiaofei Nie; Anguo Tu; Hua Zhu; Shiqiang Zhang. 2020. "Impacts of Climate and Land-Use Change on Blue and Green Water: A Case Study of the Upper Ganjiang River Basin, China." Water 12, no. 10: 2661.

Journal article
Published: 25 September 2018 in Journal of Soils and Sediments
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The main objective of this study was to investigate the effects of abiogenic and biogenic factors, and their interaction, on aggregate stability determined at different particle sizes. Soil samples with the same land use pattern were collected and fractioned into five aggregate sizes: 10–15 mm, 5–10 mm, 2–5 mm, 0.25–2 mm, and < 0.25 mm. Contents of iron/aluminum (Fe/Al) oxides, soil organic carbon (SOC), clay, and mean weight diameter (MWD) values for aggregates at different sizes were determined. The respective contributions of these factors were further estimated using path analysis. The results showed that SOC contents in A horizon declined with the increase of aggregate size. Highest amorphous iron oxide (Feo) contents were observed in 0.25–2 and 2–5 mm aggregates, but highest amorphous aluminum oxide (Alo) contents were found in 5–10 mm aggregates. Abiotic factors (Fe/Al oxides, clay) played a more important role in determining the formation of < 0.25 mm aggregates, whereas both abiotic and biotic factors play an effective role in stabilizing larger aggregates (0.25–2, 2–5, 5–10, and 10–15 mm). The organo-mineral complexes played a certain role in the stability of soil aggregates, especially the larger aggregates. We conclude that abiotic and biotic factors play variable roles in soil aggregates at different sizes, and more studies are needed to better assess their respective roles to improve our understanding of soil aggregation.

ACS Style

Taihui Zheng; Jie Yang; Jie Zhang; Chongjun Tang; Kaitao Liao; Yaojun Liu. Factors contributing to aggregate stability at different particle sizes in ultisols from Southern China. Journal of Soils and Sediments 2018, 19, 1342 -1354.

AMA Style

Taihui Zheng, Jie Yang, Jie Zhang, Chongjun Tang, Kaitao Liao, Yaojun Liu. Factors contributing to aggregate stability at different particle sizes in ultisols from Southern China. Journal of Soils and Sediments. 2018; 19 (3):1342-1354.

Chicago/Turabian Style

Taihui Zheng; Jie Yang; Jie Zhang; Chongjun Tang; Kaitao Liao; Yaojun Liu. 2018. "Factors contributing to aggregate stability at different particle sizes in ultisols from Southern China." Journal of Soils and Sediments 19, no. 3: 1342-1354.

Journal article
Published: 27 October 2017 in Journal of Soils and Sediments
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The main objective of this study was to conduct a preliminary comparison on the trace element pollution, sequential extraction, and risk level in different depths of tailings with different accumulation age from a rare earth mine in Jiangxi Province, China. We collected samples at different depths of rare earth tailings with 1- and 5-year accumulation age in the same rare earth mine. The total concentrations of six potentially toxic elements (Pb, Cd, Cr, Cu, Ni, and As) were determined by acid digestion and the chemical fractionation of Pb and Cd were analyzed using the modified sequential extraction procedure (SEP) proposed by the Community Bureau of Reference (BCR) in combination with inductively coupled plasma mass spectrometry (ICP-MS). A preliminary comparison on the trace element pollution, sequential extraction, and risk level in different depths of rare earth tailings with diverse accumulation age was then conducted. High pollution levels were observed for Pb and Cd, with total concentrations in the range 79.33~134.54 and 0.83~1.83 mg kg−1, respectively. However, low pollution levels were found for Cr, Cu, Ni, and As. For the concentrations of total Pb and Cd, Pb and Cd associated with the Fe–Mn oxides and the residual fraction from top to bottom layers decreased predominantly. Overall, for the concentrations of total Pb and Cd, Pb and Cd associated with the residual fraction in all depths of the mine tailings with 5-year accumulation age were much higher than those in the mine tailings with 1-year accumulation age. The rare earth tailings showed low risk for Pb with risk assessment code (RAC) values less than 10%, but medium risk for Cd showed in the rare earth tailings with 5-year accumulation age at all depths and in the rare earth tailings with 1-year accumulation age at 10~20- and 20~30-cm depths. Advances made in our understanding of trace element pollution, sequential extraction, and risk level in different depths of tailings with different accumulation age are providing new evidences for the transportation of contaminants that derive from mining activities.

ACS Style

Taihui Zheng; Jie Yang; Pengfei Huang; Chongjun Tang; Jialei Wan. Comparison of trace element pollution, sequential extraction, and risk level in different depths of tailings with different accumulation age from a rare earth mine in Jiangxi Province, China. Journal of Soils and Sediments 2017, 18, 992 -1002.

AMA Style

Taihui Zheng, Jie Yang, Pengfei Huang, Chongjun Tang, Jialei Wan. Comparison of trace element pollution, sequential extraction, and risk level in different depths of tailings with different accumulation age from a rare earth mine in Jiangxi Province, China. Journal of Soils and Sediments. 2017; 18 (3):992-1002.

Chicago/Turabian Style

Taihui Zheng; Jie Yang; Pengfei Huang; Chongjun Tang; Jialei Wan. 2017. "Comparison of trace element pollution, sequential extraction, and risk level in different depths of tailings with different accumulation age from a rare earth mine in Jiangxi Province, China." Journal of Soils and Sediments 18, no. 3: 992-1002.

Journal article
Published: 13 August 2013 in Journal of Soils and Sediments
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A comprehensive study was conducted to investigate the presence of polycyclic aromatic hydrocarbons (PAHs) in Dongjiang River Basin (DRB) soils and to evaluate their sources and ecological and health risk. In addition, factors affecting the distribution and fate of PAHs in the soils such as emission density, soil organic matter, degradation, etc. were studied. Surface soil (0–20 cm) samples from 30 sampling sites in the rural areas of DRB were collected and analyzed for 17 polycyclic aromatic hydrocarbons (16 EPA priority PAHs and perylene). Positive matrix factorization model was used to investigate the source apportionment of these PAHs, and an incremental lifetime cancer risk (ILCR) was used to estimate the integrated lifetime risks of exposure to soil-borne PAHs through direct ingestion, dermal contact, and inhalation collectively. The total PAH concentrations in the rural soils in DRB range from 23.5 to 231 μg/kg with a mean concentration of 116 μg/kg. The predominant PAHs in the rural soils were naphthalene, fluoranthene, phenanthrene, and benzo(b)fluoranthene. Cluster analysis was performed to classify the soil PAHs into three clusters, which could be indicative of the soil PAHs with different origins and different properties. Source apportionment results showed that coal, biomass, oil, commercial creosotes, and vehicle contributed 24 %, 24 %, 17 %, 17 %, and 18 % of the total soil PAH burden, respectively. The ILCR results indicated that exposure to these soil-borne PAHs through direct ingestion, dermal contact, and inhalation collectively produces some risk. PAHs in the soils of the DRB will produce long-term influences on rivers and oceans via soil erosion and river transport. Therefore, PAHs in rural soils of DRB have potential impacts on the water supply and human health risk.

ACS Style

Taihui Zheng; Yong Ran; Laiguo Chen. Polycyclic aromatic hydrocarbons (PAHs) in rural soils of Dongjiang River Basin: occurrence, source apportionment, and potential human health risk. Journal of Soils and Sediments 2013, 14, 110 -120.

AMA Style

Taihui Zheng, Yong Ran, Laiguo Chen. Polycyclic aromatic hydrocarbons (PAHs) in rural soils of Dongjiang River Basin: occurrence, source apportionment, and potential human health risk. Journal of Soils and Sediments. 2013; 14 (1):110-120.

Chicago/Turabian Style

Taihui Zheng; Yong Ran; Laiguo Chen. 2013. "Polycyclic aromatic hydrocarbons (PAHs) in rural soils of Dongjiang River Basin: occurrence, source apportionment, and potential human health risk." Journal of Soils and Sediments 14, no. 1: 110-120.