Article
Agriculture, Multidisciplinary
Shaopeng Wang, Limei Zhai, Shufang Guo, Fulin Zhang, Lingling Hua, Hongbin Liu
Summary: Runoff loss of nitrogen (N) from paddy fields is a major contributor to non-point source pollution, and straw return to soil can influence N runoff loss through changes in soil biochemistry. In this study, in situ N runoff monitoring combined with an analysis of soil biochemical indicators was used to investigate the effect of straw return over a period of five or six years on N runoff loss and its mechanism in different rice rotation systems. The results showed that straw return reduced total N (TN) runoff losses by 2.29%-26.10%, with the greatest reduction observed in inorganic N (IN) through biochemical pathways. This reduction was mainly attributed to the increase in soil carbon-to-nitrogen ratio (C:N) caused by straw return, which led to enhanced immobilization of microbial N and a decrease in soil IN. Additionally, the abundance of functional genes involved in nitrification was also found to contribute to a decrease in TN runoff concentration. Notably, the reduction in IN and nitrification-related genes did not affect N uptake by rice, and the increase in the atmospheric N fixation gene (nifH) was beneficial for soil N supplementation. However, the positive effects of straw return varied among the different rice rotation systems, with the lowest TN loss reduction observed in doublecropping rice systems. It was found that the increase in soil C:N after straw return was more effective in single-cropping and paddy-upland systems with lower initial soil C:N, indicating a greater potential to reduce TN runoff loss. This study provides new insights into N cycling in soil biochemistry through straw return, which can help guide the selection of optimal measures to protect water environments in different rice rotation systems.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2023)
Article
Horticulture
Andre Luiz Biscaia Ribeiro da Silva, Camila Rodrigues, Laurel Dunn, George Cavender, Timothy Coolong
Summary: This study evaluated the impact of fertilizer nitrogen levels on the yield, bulb quality, and consumers' preference of short-day onions grown under subtropical conditions in the southeastern U.S. The results showed that nitrogen levels had a significant effect on yield and bulb quality, but did not affect consumers' preference. Additionally, the appropriate nitrogen application rate could sustain soil mineral nitrogen availability.
Article
Engineering, Environmental
Zhetai Hu, Haoran Duan, Zhiyao Wang, Jing Zhao, Liu Ye, Zhiguo Yuan, Min Zheng, Shihu Hu
Summary: A new approach of dosing FeCl3 into returned sludge was proposed to achieve nitrogen removal via the nitrite pathway and reduce biomass production. By increasing iron concentration, sludge acidification and nitrite accumulation were induced, leading to enhanced sludge treatment efficiency.
Article
Soil Science
Changlu Hu, Victor O. Sadras, Guoyan Lu, Panxin Zhang, Yan Han, Lin Liu, Junyu Xie, Xueyun Yang, Shulan Zhang
Summary: The practice of split N application in wheat production has been shown to increase yield and grain protein content, particularly suited for use under conventional tillage, humid climate, coarse textured soils, less fertile soils, and at high N rates.
SOIL & TILLAGE RESEARCH
(2021)
Article
Agronomy
Tomasz Niedzinski, Maria Jose Sierra, Jan Labetowicz, Kinga Noras, Cristina Cabrales, Rocio Millan
Summary: The study found that mineral fertilizers release nitrogen at a faster rate compared to organic fertilizers, with a higher percentage of nitrogen released. During incubation, significant changes were observed in soil pH and nitrogen content for mineral fertilizers, while organic fertilizers did not cause these changes. Mineral fertilizers significantly modified the EC value of the soil solution.
Article
Biodiversity Conservation
Ze Wang, Tingting Tao, Hu Wang, Ji Chen, Gaston E. Small, David Johnson, Jihui Chen, Yingjun Zhang, Qichao Zhu, Shengmin Zhang, Yantao Song, Jens Kattge, Peng Guo, Xiao Sun
Summary: Through a meta-analysis of 53 grassland studies and a long-term field experiment, it was found that soil acidification was less pronounced when organic nitrogen (ON) inputs accounted for at least 20% of the total nitrogen input, especially at higher input rates. The rate of hydrogen ion (H+) production was mainly determined by NH3 volatilization from ON and the uptake of ON and NH4+ by Leymus chinensis, with the latter contributing less to H+ production. These findings suggest that the evaluation of N-induced soil acidification should consider N forms, and manipulating the relative composition of N inputs could be an effective approach to alleviate soil acidification.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Soil Science
D. D. Kok, W. de Vries, L. Scherer, P. M. van Bodegom
Summary: Soil organic amendments can alter microbial communities and their resilience to environmental stresses, impacting carbon and nitrogen transformation. This research investigates the impact of temperature change rates as a microbial stressor and evaluates the potential use of organic amendments in steering soil ecological response. The results indicate that organic amendments can mitigate the sensitivity of soil to temperature changes.
Article
Environmental Sciences
Xiuqing Nie, Dong Wang, Guoying Zhou, Feng Xiong, Lining Ren, Yongzhe Chen, Kali Ma, Zebing Zhong, Yangong Du
Summary: This study estimated the storage and controlling factors of soil total nitrogen (STN) and soil total phosphorus (STP) in alpine wetlands, and found that soil characteristics play a significant role in regulating the effects of vegetation and climate on STN density.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Agronomy
Weili Liu, Zhi Cao, Haiyan Ren, Dan Xi
Summary: The research reveals that microplastics have significant effects on the available nitrogen content in farmland soil, especially on the dissolved organic nitrogen. The results of this study can provide a scientific basis for reducing nitrogen loss in soil and protecting farmland soil safety.
Article
Soil Science
Lei Song, Jinsong Wang, Junxiao Pan, Yingjie Yan, Shuli Niu
Summary: This study measured the gross N mineralization rate (GNMR) and related properties in an alpine meadow under chronic nitrogen (N) addition at different soil depths. The results showed that GNMR was negatively correlated with N addition rate and soil available NO3- content, and positively correlated with soil pH and carbon/nitrogen ratio (C/N). Acidification, increased N availability, and C limitation all decreased soil N mineralization, with acidification dominating in the topsoil and C limitation dominating in the subsoil. These findings improve our understanding of soil N mineralization with chronic N enrichment at different depths.
Review
Plant Sciences
Bartosz Adamczyk
Summary: Human activities have accelerated the deterioration of the global nitrogen cycle, mainly due to the overuse of inorganic nitrogen fertilizers in nutrient-limited cropping systems. To prevent further dysregulation of the nitrogen cycle, it is necessary to enhance plant nitrogen use efficiency. This can be achieved by unraveling plant mechanisms for accessing soil nitrogen, particularly the high-molecular-mass nitrogen pool.
Article
Geosciences, Multidisciplinary
Daniel S. Goll, Philippe Ciais, Thorben Amann, Wolfgang Buermann, Jinfeng Chang, Sibel Eker, Jens Hartmann, Ivan Janssens, Wei Li, Michael Obersteiner, Josep Penuelas, Katsumasa Tanaka, Sara Vicca
Summary: Simulations suggest that vegetation's enhanced CO2 uptake from powdered rock can be a feasible option in mitigating climate change, with enhanced weathering being a potential negative emission technology. Amending soil with powdered basalt may effectively enhance ecosystem carbon storage, but scaling up and addressing potential side effects are necessary.
Article
Environmental Sciences
Jingmin Yang, Rong Jiang, Hongwei Zhang, Wentian He, Jingyi Yang, Ping He
Summary: Optimized fertilization is an effective strategy for improving nitrogen use efficiency and maintaining high crop yield. This study investigated the long-term impacts of different nitrogen rates on maize yields and soil nitrogen and carbon dynamics. The results showed that the optimum nitrogen rate and combined organic-inorganic nitrogen rate can achieve similar yields as the farmers' nitrogen rate. Furthermore, substituting 20-30% manure for inorganic fertilizer under the optimum nitrogen rate could help reduce soil nitrogen losses and increase soil organic carbon stock for sustainable agriculture.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Wenxin Bian, Lirong An, Shugang Zhang, Jinchao Feng, Dongxu Sun, Yuanyuan Yao, Tianlin Shen, Yuechao Yang, Min Zhang
Summary: The study showed that residual coating microplastics have limited impact on soil structure and bacterial communities, but become a specific microbial habitat. The nitrogen rate and release mode affect the distribution of organomineral complexes in the soil, and the nitrogen rate also impacts soil bacterial communities.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Ge Qin, Hongyu Feng, Hui Zhao, Lu Xia, Wen Yang, Yongqiang Zhao, Nasreen Jeelani, Shuqing An
Summary: The study investigated the impact of coastal embankments on nitrogen cycling in Spartina alterniflora salt marshes. The results showed that the embankments significantly reduced nitrogen storage and concentrations in both plant and soil subsystems. However, the effects varied seasonally, with some nitrogen subpools increasing while others decreased. The establishment of embankments decreased soil salinity, leading to increased ion uptake by microbes and subsequently stimulating microbial biomass production.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Meteorology & Atmospheric Sciences
Zhigang Sun, Qinxue Wang, Ochirbat Batkhishig, Zhu Ouyang
ADVANCES IN METEOROLOGY
(2016)
Article
Agriculture, Multidisciplinary
Zhipin Ai, Yonghui Yang, Qinxue Wang, Kiril Manevski, Quan Wang, Qiuli Hu, Deni Eer, Jiusheng Wang
JOURNAL OF AGRICULTURAL METEOROLOGY
(2018)
Article
Environmental Sciences
Chen Liu, Qinxue Wang, Chunjing Zou, Yoshitsugu Hayashi, Tetsuzo Yasunari
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2015)
Article
Multidisciplinary Sciences
Zhipin Ai, Qinxue Wang, Yonghui Yang, Kiril Manevski, Xin Zhao, Deni Eer
SCIENTIFIC REPORTS
(2017)
Article
Agronomy
Ren Li, Lin Zhao, Tonghua Wu, Qinxue Wang, Yongjian Ding, Jimin Yao, Xiaodong Wu, Guojie Hu, Yao Xiao, Yizhen Du, Xiaofan Zhu, Yanhui Qin, Shuhua Yang, Rui Bai, Erji Du, Guangyue Liu, Defu Zou, Yongping Qiao, Jianzong Shi
AGRICULTURAL AND FOREST METEOROLOGY
(2019)
Review
Cardiac & Cardiovascular Systems
Haobin Huang, Qinxue Wang, Jin Xu, Yanhu Wu, Cheng Xu
Summary: By comparing the results, it was found that surgical ablation (SA) has a moderate advantage over catheter ablation (CA) in terms of 1-year efficacy outcomes and can be safely performed by experienced surgeons.
JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY
(2022)
Article
Agronomy
Zhipin Ai, Qinxue Wang, Yonghui Yang, Kiril Manevski, Shuang Yi, Xin Zhao
AGRICULTURAL AND FOREST METEOROLOGY
(2020)
Article
Ecology
Tadanobu Nakayama, Qinxue Wang, Tomohiro Okadera
Summary: In Mongolia, the overuse and degradation of groundwater in urban and mining areas is a serious issue. The application of the NICE model to different river basins revealed significant impacts of urbanization and mining on local eco-hydrological degradation, particularly in Ulaanbaatar and the Southern Gobi region.
ECOLOGICAL MODELLING
(2021)
Article
Ecology
Tadanobu Nakayama, Qinxue Wang, Tomohiro Okadera
Summary: The study examines the overuse and degradation of groundwater in urban and mining areas in Mongolia, highlighting the impact of urbanization and mining on local water stress. The model parameter estimation through sensitivity analysis improves the accuracy of hydrologic budgets in basins.
ECOHYDROLOGY & HYDROBIOLOGY
(2021)
Article
Environmental Studies
Qian Qian, Junbang Wang, Xiujuan Zhang, Shaoqiang Wang, Yingnian Li, Qinxue Wang, Alan E. Watson, Xinquan Zhao
Summary: This paper assesses the possibility of achieving established targets for the proportion of cultivated to available grassland in the Three-River Headwaters Region in China. It finds that in order to reach income targets in 2025, 5% of grasslands need to be cultivated, but achieving income targets in 2035 will become very difficult.
Article
Geography, Physical
Qinxue Wang, Tomohiro Okadera, Masataka Watanabe, Tonghua Wu, Batkhishig Ochirbat
Summary: The response of permafrost to climate change in different terrestrial ecosystems was studied by establishing a monitoring network in North-central Mongolia. The results showed that permafrost degradation was more pronounced in ice-rich areas and wetland ecosystems, while the steppe ecosystem experienced the most rapid permafrost degradation. Correlation analysis revealed the association between climatic factors and permafrost indicators, such as precipitation and soil water content with active layer thickness, and relative humidity with mean annual ground temperature.
PERMAFROST AND PERIGLACIAL PROCESSES
(2022)
Article
Biodiversity Conservation
Qinxue Wang, Xinhao Peng, Masataka Watanabe, Ochirbat Batkhishig, Tomohiro Okadera, Yoko Saito
Summary: Although global warming has led to permafrost thaw, the mechanism linking permafrost thawing and ecosystem carbon budgets is still not well understood. This study compared the effects of freeze-thaw cycles on grassland ecosystem carbon budgets in a permafrost area (PA) and a non-permafrost area (NPA). Carbon dioxide flux towers were used to monitor net ecosystem exchange, and the results showed that the grassland ecosystem acted as a carbon sink in the PA but as a carbon source in the NPA. The thawing period and thawed period also had significant effects on the carbon budget, with higher carbon absorption in the PA during both periods compared to the NPA.
GLOBAL ECOLOGY AND CONSERVATION
(2023)
Article
Environmental Sciences
Xinyan Hou, Xuan Xie, Hasi Bagan, Chaomin Chen, Qinxue Wang, Takahiro Yoshida
Summary: Understanding changes in urban internal structure and land surface temperature (LST) is essential for urban climate research. This study applied the local climate zone (LCZ) scheme to map the LCZs in Shanghai and investigated the spatiotemporal variations in LST from 2008 to 2020. The results revealed an increase in open high-rise and open mid-rise buildings, and higher LSTs in 2020 compared to 2008 for each LCZ type in spring.
Article
Meteorology & Atmospheric Sciences
Ren Li, Junjie Ma, Tonghua Wu, Qinxue Wang, Xiaodong Wu, Lin Zhao, Shenning Wang, Guojie Hu, Wenhao Liu, Yongliang Jiao, Jimin Yao, Yao Xiao, Xiaofan Zhu, Jianzong Shi, Yongping Qiao
Summary: This study analyzed the variation of freezing index (FI) in permafrost on the Qinghai-Tibet Plateau (QTP) and discussed its relationship with permafrost degradation. The results showed that FI was smaller in the interior of the QTP and increased over the 40-year period. FI was closely related to altitude, maximum freezing depth (MFD), and active layer thickness (ALT). The study revealed the thermal condition variation of permafrost in the QTP and its degrading trend.
THEORETICAL AND APPLIED CLIMATOLOGY
(2023)
Article
Agronomy
Zhipin Ai, Yonghui Yang, Qinxue Wang, Shumin Han, Yanmin Yang, Quan Wang, Guoyu Qiu
INTERNATIONAL AGROPHYSICS
(2018)
Article
Agriculture, Multidisciplinary
Jiarui Zhao, Xiaohu Yuan, Zhanjun Liu, Haotian Shi, Bingnian Zhai, Yuanjun Zhu
Summary: Overfertilization is common in rainfed apple orchards on China's Loess Plateau, but its impacts on soil physicochemical properties in deep soil profiles are poorly understood. This study found that different land-use types showed divergent distribution patterns in soil properties, with low variability for SWC and pH, moderate variability for NH4+-N, AP, and AK, and high variability for SOC, NO3--N, and EC. The results also showed that fertilization influenced soil water content, NO3--N, AP, and AK, and NO3--N played a crucial role in regulating pH and EC. Soil profiles were useful for studying the evolution of soil quality.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Daniel Nyfeler, Olivier Huguenin-Elie, Emmanuel Frossard, Andreas Luscher
Summary: Grass-legume mixtures combine high yields, low fertiliser requirements, and low nitrate leaching better than either pure grass or pure legume swards, both during the intact plant cover and after tilling for the subsequent crop.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Martin Faucher, Seraphine Grellier, Clemence Chaudron, Jean-Louis Janeau, Gabrielle Rudi, Fabrice Vinatier
Summary: The Mediterranean region is expected to experience more intense rainfall events and severe droughts due to climate change, leading to an increase in runoff and erosion rates in agrosystems. Vegetation cover can help reduce erosion and the soil seed bank can provide cost-effective vegetation. This study assessed the effect of vegetation cover on seed loss in vineyards and evaluated the differences in the soil seed bank along a transect. The results suggest that vegetation may not protect interrows from runoff-induced seed loss.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Christian Thierfelder, Blessing Mhlanga, Isaiah Nyagumbo, Kelvin Kalala, Esau Simutowe, Mazvita Chiduwa, Chloe Maclaren, Joao Vasco Silva, Hambulo Ngoma
Summary: The performance of different maize-legume diversification strategies was compared in southern Africa. Intercropping systems showed significant nutritional and economic benefits, but had higher labor requirements compared to other cropping systems. Soil organic carbon content and pH were not affected by the tested cropping systems.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Han Chen, Han Li, Yizhao Wei, Edward Mcbean, Hong Liang, Weimin Wang, Jinhui Jeanne Huang
Summary: This research introduces a hybrid four-sub-deep neural network (HFSD) model for partitioning NEE into GPP and ER. The HFSD employs dual sub-deep neural networks to estimate ERa and ERb and incorporates GPP and environmental variables to predict vegetation transpiration. The results of the model show that the dual sub-DNNs architecture enhances the accuracy of ER simulations, while using EC-derived T as a constraint improves the accuracy of GPP simulations. Correlation analyses suggest that solar radiation and air temperature primarily influence the seasonal variations in GPP and ER, while soil moisture has a strong impact during dry seasons. This study advances the biophysical description of data-driven models for NEE partitioning and enhances the accuracy of GPP and ER estimates.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Michael Glaser, Stefan Dullinger, Dietmar Moser, Johannes Wessely, Milan Chytry, Zdenka Lososova, Irena Axmanova, Christian Berg, Jana Buerger, Serge Buholzer, Fabrizio Buldrini, Alessandro Chiarucci, Swen Follak, Filip Kuezmic, Stefan Meyer, Petr Pysek, Nina Richner, Urban Silc, Siegrid Steinkellner, Alexander Wietzke, Franz Essl
Summary: This study investigated changes in vascular plant species in Central European arable fields and their edges from 1930 to 2019. The results showed a small decline in overall species occupancy, but a more pronounced species turnover. Species with environmental preferences for nutrient-rich sites with neutral pH increased in occupancy, while species typical for arable fields decreased. No response to climate change was observed, and there was a decrease in archaeophytes and native species and an increase in neophytes.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Thomas Abrell, Krishna Naudin, Felix J. J. A. Bianchi, Debora Veiga Aragao, Pablo Tittonell, Marc Corbeels
Summary: This study demonstrates that reducing fallow periods in shifting cultivation systems in the Eastern Amazon region has negative effects on soil fertility and weed pressure, posing a threat to the sustainability and productivity of local farming systems.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Jun Wang, Lu Lv, Ronggui Hu, Haiyang Ma, Bo Liu, Wenju Zhang, Lei Wu
Summary: Nitrification and denitrification are crucial for nitrogen losses in agricultural soils and are affected by soil properties. This study investigated the patterns and controlling factors of nitrification and denitrification potentials in paddy soils in major rice-producing areas of Hubei Province, China. The results showed that soil pH and SOC were the primary factors regulating nitrification and denitrification potentials, respectively.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Olga Fishkis, Jessica Weller, Jorn Lehmhus, Franz Pollinger, Jorn Strassemeyer, Heinz -Josef Koch
Summary: The Farm to Fork strategy of the European Union aims to reduce pesticide use and replace chemical measures with mechanical methods in weed control. However, there is currently no comprehensive evaluation of the ecological and economic parameters of mechanical methods. This study quantified these parameters for different weed control methods in sugar beet and found that no method can be considered fully environmentally friendly.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Mercedes Guerrero-Brotons, Nuria Perujo, Anna M. Romani, Rosa Gomez
Summary: Proper bed substrate selection is crucial for the performance of constructed wetlands, especially when treating drainage water with high nitrogen and low carbon and phosphorus concentrations. In a field-scale pilot plant, adding a carbon-rich substrate such as soil or biochar increased phosphorus availability in beds. Beds with soil displayed higher microbial density and activity, as well as better plant growth compared to gravel. These findings highlight the importance of selecting suitable substrates for treating irrigated agricultural water.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Beatrice Giannetta, Cesar Plaza, Giorgio Galluzzi, Iria Benavente-Ferraces, Juan Carlos Garcia-Gil, Marco Panettieri, Gabriel Gasco, Claudio Zaccone
Summary: This study examines the long-term effects of biochar application on soil organic C protection and finds that biochar, especially when combined with other amendments, has the potential to increase the content of particulate organic C and mineral-associated organic C in soils. The presence of ferrihydrite may mediate the positive effects on mineral-associated organic matter.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Emily Rose Waring, Carl Pederson, Ainis Lagzdins, Chelsea Clifford, Matthew J. Helmers
Summary: Addressing the global problem of eutrophication requires better management of inorganic nitrogen in the agricultural landscape. This study compares the effects of different tillage practices and cover crops on soil and water quality. The results show that the conventional tillage system is more effective in improving water quality and maintaining crop yields compared to other tillage practices. Additionally, the study reveals that the impact of tillage practices and cover crop growth methods on water and soil quality changes over time.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Annalisa Stevenson, Yakun Zhang, Jingyi Huang, Jie Hu, Keith Paustian, Alfred E. Hartemink
Summary: Considerable advances have been made in the assessment and mapping of soil organic carbon stocks. However, the rates of change in carbon stocks are influenced by various factors and need to be quantified. This study found that sandy soils under cultivation and forests have different organic carbon stocks. Factors such as tillage, irrigation, and nitrogen applications contribute to the decline in soil organic carbon stocks. Afforestation of abandoned cultivated fields can increase soil organic carbon, but it is still lower than soils under forest that have never been cultivated.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Zhiyuan Yao, Chuanxiong Huang, Huiling Hu, Tao Wang, Yulong Li, Xiaoming Sune, Sina Adl, Bo Zhu
Summary: Enhancing soil organic carbon levels through improved fertilization strategies is important for soil health and sustainable crop production. This study found that the relative abundance of organisms from higher trophic levels and increased network complexity in the soil micro-food webs are vital contributors to effective SOC accumulation.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agriculture, Multidisciplinary
Qing Qu, Lei Deng, Zhouping Shangguan, Jian Sun, Jinsheng He, Kaibo Wang, Zhengchao Zhou, Jiwei Li, Josep Penuelas
Summary: Grazing exclusion is a widely implemented strategy for restoring degraded grassland ecosystems and increasing carbon stocks. This study analyzed data from 199 experiments to understand the temporal responses and factors influencing plant and soil carbon stocks following grazing exclusion in different grassland ecosystems. The results showed that plant biomass carbon stocks and soil organic carbon stocks decreased exponentially or rationally with years since enclosure. Grazing exclusion had positive effects on aboveground biomass carbon, but the effects on belowground biomass and soil carbon were influenced by climate, initial carbon levels, and grazing exclusion duration. The response of carbon stocks to grazing exclusion stabilized after approximately 40 years, with soil carbon sequestration showing a lagged pattern compared to plant biomass carbon. The study highlighted the effectiveness of grazing exclusion in regions with low carbon content and non-water limited conditions. However, it might not be an effective measure to increase soil organic carbon stocks in water-limited areas like desert grasslands.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
