Article
Geosciences, Multidisciplinary
Chen Lv, Tahseen Saba, Jingyan Wang, Wenkai Hui, Xikun Kang, Yvxin Xie, Kai Wang, Hengli Wang, Wei Gong
Summary: This study investigated the effects of different farmland conversion approaches on soil organic carbon (SOC) fractions in arid valleys. The results showed that the concentrations of each SOC fraction increased after farmland conversion, but decreased with soil depth. Furthermore, the conversion of farmland to abandoned land and Zanthoxylum bungeanum plantations resulted in increased SOC stock, sequestration, and sequestration rate, with a similar ranking as the SOC fractions. The study also found significant correlations between litter stock, fine root biomass, each SOC fraction, and the carbon pool management index (CPMI).
Article
Soil Science
Jiwei Li, Zhouping Shangguan, Lei Deng
Summary: Grazing exclusion is an effective strategy for recovering degraded grasslands and increasing carbon accumulation. This study investigated the response of soil organic carbon (SOC) and its components to grazing exclusion during long-term succession, revealing that grazing exclusion duration and soil depth significantly affected the contents of SOC, free particulate organic carbon (fPOC), occluded particulate organic carbon (oPOC), and mineral-associated organic carbon (MOC). The findings suggest that grazing exclusion can promote SOC accumulation and contribute to SOC formation in both topsoil and subsoil.
SOIL & TILLAGE RESEARCH
(2022)
Article
Environmental Sciences
Cezary Kabala, Lukasz Chachulski, Bogdan Gadek, Bartosz Korabiewski, Monika Metrak, Malgorzata Suska-Malawska
Summary: The study examines the impact of major environmental factors related to climate, topography, and vegetation on soil development in the Uisu Glacier foreland. The extremely cold and dry climate limits water availability, suppresses vegetation growth, and slows down soil development. Both WRB and Soil Taxonomy were able to reflect advances in soil development and spatial differentiation, highlighting different features developed under the extreme climate conditions of the East Pamir Mountains.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Soil Science
Qian Yue, Jianfei Sun, Jonathan Hillier, Jing Sheng, Zhi Guo, Puping Zhu, Kun Cheng, Genxing Pan, Yunpeng Li, Xin Wang
Summary: This study assessed the impact of green manure rotation and application on rice yield and soil properties in the agricultural region of the Yangtze River, China. The results showed that green manure significantly increased rice yield and soil organic carbon. Factors such as green manure application rates, duration, nitrogen application rates, and initial soil conditions were identified as important drivers for rice yield and soil organic carbon changes.
Article
Environmental Sciences
Lifeng Chen, Kai Chen, Genyi He, Zhiqi Liu
Summary: This study focused on the loess in Xinyuan County of the Yili River Basin in China and aimed to build a prediction model for loess collapsibility using suitable parameters. The results showed that the region's soils were predominantly flocculated structures composed of quartz and albite. Multiple linear regression and neural network models were compared, and it was found that the former was more appropriate and accurate, with a high accuracy percentage. The model's assessment index showed that it had good performance in estimating local loess collapsibility.
Article
Plant Sciences
Zhaogang Liu, Zhi Chen, Guirui Yu, Weikang Zhang, Tianyou Zhang, Lang Han
Summary: Drylands play a significant role in the land carbon sink, but the implications of climate change on carbon dynamics in these areas are not well understood. This study investigates the roles of climate, vegetation, and soil factors on carbon fluxes, and finds that soil factors have a greater impact on carbon fluxes in drylands.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Soil Science
Xiaohan Mo, Mengke Wang, Yinghui Wang, Xunwen Chen, Ang Zhang, Hui Zeng, Yan Zheng, Deliang Kong, Junjian Wang
Summary: Rhizosheaths are aggregated, sheath-like soils that physically adhere to root surface, and they have distinct soil organic carbon (SOC) signatures from rhizosphere soils of non-rhizosheath forming plants. The molecular characteristics of rhizosheath SOC, including more root inputs of labile substrates and relatively recalcitrant compounds, as well as its temporal dynamics, suggest a critical role of rhizosheath in shaping the rhizosphere microenvironment and regulating SOC cycling.
SOIL BIOLOGY & BIOCHEMISTRY
(2022)
Article
Geosciences, Multidisciplinary
Zi-Qiang Yuan, Xiao-Jin Jiang
Summary: Through redundancy analysis of Tibetan alpine meadows, this study identified key factors and interactions driving soil SOC and N contents, emphasizing the importance of considering the covariation of vegetation and soil when evaluating SOC and N dynamics.
Article
Environmental Sciences
Zhenrui Zhang, Xiaoxia Gao, Sibo Zhang, Hui Gao, Jing Huang, Siyue Sun, Xuefei Song, Ellen Fry, Hanqin Tian, Xinghui Xia
Summary: This study examines the changes in soil organic carbon (SOC) in suburban and urban areas of highly urbanized cities in China. The results show that SOC decreases in suburban areas but increases in urban areas. The changes in SOC are positively correlated with changes in vegetation coverage and productivity. The topsoils in highly urbanized urban areas act as carbon sinks due to increased vegetation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Forestry
Jianyu Wang, Claudio O. Delang, Guolong Hou, Lei Gao, Xiankun Yang, Xixi Lu
Summary: This study sampled 150 reforested plots in the Yangtze River Basin to estimate carbon storage in biomass and soil. The results show that biomass carbon accumulates rapidly in the initial 20 years after reforestation, while soil organic carbon sequestration increases rapidly after 20 years. Evergreen species have higher carbon density in both biomass and soil compared to deciduous species and economic species.
JOURNAL OF FORESTRY RESEARCH
(2022)
Article
Agriculture, Multidisciplinary
Janine Moll-Mielewczik, Sonja G. Keel, Andreas Gubler
Summary: Long-term monitoring of soil organic carbon (SOC) content and stocks is crucial for climate change and carbon sequestration. Field data and models are used to report changes in SOC stocks and validate models. This study presents SOC measurements from 1985 to 2014 in Swiss grassland sites and compares them with predictions from the RothC model. While there was no general trend in measured data, the model showed a good fit in two-thirds of the cases.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2023)
Article
Soil Science
Meng Guo, Bo Zhao, Yangxue Wen, Jingjing Hu, Amin Dou, Zhiwei Zhang, Junpeng Rui, Wenjin Li, Qiang Wang, Jianxiao Zhu
Summary: SOC quality plays a primary role in the elevational pattern of CO2-C release in Tibetan alpine grassland. The proportion of stable SOC fractions in larger initial SOC stocks is higher, which could be the potential mechanism behind lower soil CO2-C release.
Article
Environmental Sciences
Zhihan Yang, Xinrui Luo, Yuehong Shi, Tao Zhou, Ke Luo, Yunsen Lai, Peng Yu, Liang Liu, Alexander Olchev, Ben Bond-Lamberty, Dalei Hao, Jinshi Jian, Shaohui Fan, Chunju Cai, Xiaolu Tang
Summary: This study used a machine learning approach to predict the temperature sensitivity (Q10) of soil respiration at a 1 km resolution across China. The results showed that Q10 varied from 1.54 to 4.17, with a weighted average of 2.52. Soil organic carbon was identified as the most important driving factor for Q10, and the spatial and temporal variations were influenced by different environmental factors.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Qian Cui, Hongjun Yang, Guangmei Wang, Jinzhao Ma, Lu Feng, Jingtao Liu
Summary: Coastal wetlands are important carbon sinks, and mowing management induced by human activities can significantly impact soil carbon stocks in these wetlands. This study investigated the effects of mowing management on soil quality, organic carbon content, and enzyme activities in Phragmites australis wetlands of the Yellow River Delta. The results showed that mowing treatments increased soil nutrient content and improved soil quality. Mowing also increased the amount of organic carbon and stimulated enzyme activities in the topsoil. Overall, continuous mowing management can enhance soil quality and carbon storage capacity of P. australis wetlands, thus contributing to carbon sequestration and sink capacity in coastal wetlands.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Anning Wang, Tonggang Zha, Zhiqiang Zhang
Summary: This study explored the effects of vegetation restoration on soil organic carbon (SOC) storage and stability. The results showed that vegetation restoration improved the soil structure and enhanced SOC storage and stability. The accumulation of organic carbon in macroaggregates and the enhanced chemical stability of organic carbon in silt-clay aggregates were the main factors contributing to these improvements.