Article
Geosciences, Multidisciplinary
Baoqing Zhang, Lei Tian, Yuting Yang, Xiaogang He
Summary: Revegetation in China's Loess Plateau has led to an increase in surface water yield, despite the enhanced evapotranspiration. This is mainly due to the increase in regional precipitation that outweighs the increase in evapotranspiration. Enhanced land-atmosphere interactions following revegetation have accelerated local moisture recycling and contributed to the increased precipitation. Previous assessments that ignore vegetation-climate feedbacks may have overestimated the threats of revegetation on dryland water resources.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Meteorology & Atmospheric Sciences
Lei Tian, Baoqing Zhang, Shuoyu Chen, Xuejin Wang, Xiaogang Ma, Baotian Pan
Summary: Afforestation is an effective method to control soil erosion, but it consumes water resources and has feedback effects on local precipitation. The world's largest afforestation program in China has increased precipitation and strengthened the atmospheric water cycle on the Loess Plateau. Afforestation has created a more humid atmosphere, enhanced the soil moisture-vegetation-precipitation feedback, and favored precipitation generation.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2022)
Article
Environmental Sciences
Yuxuan Chen, Tianxing Wei, Kang Ren, Guoliang Sha, Xin Guo, Yanchao Fu, Huan Yu
Summary: Vegetation restoration can increase soil organic carbon stock (SOCS) but decrease soil water storage (SWS) in arid and semiarid regions. The spatial distributions of SOCS and SWS vary across different land use types and soil profiles, with a significant accumulation in deep soil layers. In most plant communities, SWS has higher relative benefits compared to SOCS, ensuring sustainable restoration. Local environmental conditions play a more important role than land use in determining the variations of SOCS and SWS.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Biodiversity Conservation
Xiaoting Wei, Qiang Huang, Shengzhi Huang, Guoyong Leng, Yanping Qu, Mingjiang Deng, Zhiming Han, Jing Zhao, Dong Liu, Qingjun Bai
Summary: This study investigated the feedback relationship between NDVI and soil moisture over the Loess Plateau using the Granger causality method. The results showed that NDVI was positively correlated with soil moisture at the 0-10cm depth, while it was negatively correlated with soil moisture at the 10-40cm and 40-100cm depths. After the Grain for Green program, the feedback relationship between vegetation and soil moisture at the 0-10cm depth was further enhanced.
ECOLOGICAL INDICATORS
(2022)
Article
Environmental Sciences
Jing Wang, Wenwu Zhao, Lizhi Jia, Xiangping Hu, Francesco Cherubini
Summary: The study shows that afforestation significantly impacts soil moisture, especially in the 20 to 30-year timeframe. After vegetation restoration, the soil moisture on south-facing slopes with Robinia pseudoacacia and north-facing slopes with Robinia pseudoacacia and Caragana korshinskii decreased significantly.
JOURNAL OF SOILS AND SEDIMENTS
(2021)
Article
Agriculture, Multidisciplinary
Ai-Tian Ren, Rui Zhou, Fei Mo, Shu-Tong Liu, Ji-Yuan Li, Yinglong Chen, Ling Zhao, You-Cai Xiong
Summary: The study found that plastic mulching significantly increased evapotranspiration and improved soil water storage, especially with more pronounced effects on deep soil water storage and better performance in conditions of lower precipitation.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2021)
Article
Environmental Sciences
Jing Wang, Wenwu Zhao, Guan Wang, Siqi Yang, Paulo Pereira
Summary: Long-term afforestation significantly impacts soil properties and quality, with natural recovery being more efficient than afforestation in improving soil quality.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Linjing Qiu, Yuting Chen, Yiping Wu, Qingyue Xue, Zhaoyang Shi, Xiaohui Lei, Weihong Liao, Fubo Zhao, Wenke Wang
Summary: The study found that there was a significant increase in leaf area index (LAI) and evapotranspiration across most regions of the Loess Plateau, but a decrease in the evaporative stress index (ESI) overall. This decrease in ESI was mainly attributed to the increase in LAI rather than climatic influences. Additionally, soil moisture storage showed an increasing trend in the central and eastern parts of the plateau.
Article
Environmental Sciences
Licheng Wang, Jinxin Lu, Ronglei Zhou, Gaohui Duan, Zhongming Wen
Summary: This study analyzed the effect of vegetation greening on soil moisture on the Tibetan Plateau. The results showed that both vegetation greening and soil moisture exhibited a stable increasing trend from 1982 to 2015. Precipitation was identified as the most influential factor in soil moisture changes.
Article
Soil Science
Bin-Bin Li, Pan-Pan Li, Wan-Tao Zhang, Jing-Yi Ji, Guo-Bin Liu, Ming-Xiang Xu
Summary: The study reveals that planted forests and shrubs in the Chinese Loess Plateau have negative impacts on deep soil moisture within 1000 cm depth, showing a significant and continuous decrease in soil moisture in the first 20 years, with certain tree species recommended to maintain better soil moisture levels. Additionally, the limiting effects of precipitation on deep soil moisture under planted forests and shrubs may begin to appear when the mean annual precipitation is less than 480 mm.
Article
Environmental Sciences
Haibin Liang, Yayong Xue, Zongshan Li, Guangyao Gao, Guohua Liu
Summary: Afforestation is a useful method for restoring degraded landscapes and protecting ecosystems in arid and semiarid regions. However, the impact of afforestation on soil moisture content (SMC) in deep soil layers and the factors controlling it on a regional scale are not well understood. This meta-analysis study compiled data from 203 sites and found that afforestation led to a decrease in SMC across the whole soil profile, especially in forestland and shrubland. The type of restoration and the age of restoration significantly affected soil moisture changes, while precipitation, temperature, and initial soil moisture collectively influenced SMC in different land use types.
LAND DEGRADATION & DEVELOPMENT
(2022)
Article
Engineering, Civil
Mao Ruichen, Song Jinxi, Tang Bin, Xu Wenjin, Kong Feihe, Sun Haotian, Lei Yuxin
Summary: Soil moisture is crucial to the global hydrological cycles and is linked to climate and vegetation. However, the impact of vegetation on the response of soil moisture to climate change is not well understood. This study used data from GLEAM, meteorological stations, and remote sensing in the Loess Plateau of China to investigate the influence of vegetation on soil moisture sensitivity. The results indicate distinct spatiotemporal patterns of soil moisture sensitivity to temperature and precipitation.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Hafeez Noor, Min Sun, Wen Lin, Zhiqiang Gao
Summary: Research has shown that summer fallow sowing can improve the water use efficiency and grain yield of winter wheat. There are yearly differences in wheat yields based on crop management. A field experiment conducted over 8 years in the Loess Plateau revealed that high water consumption during early growth can increase spike number, grain number, and yield. Wide-space sowing and furrow sowing were beneficial for wheat yield when yields were intermediate or low. Soil water intake during specific growth stages also influenced tiller number, 1000-grain weight, and yield.
Article
Agronomy
Wenbin Ding, Fei Wang, Yunyun Dong, Kai Jin, Chenyu Cong, Jianqiao Han, Wenyan Ge
Summary: The study monitored changes in soil moisture and distribution in rain-fed orchards in the hilly and gully loess region of China and found that the RIM1 treatment was most effective in improving soil moisture and apple yield. The results highlight the efficiency of the RIM system in enhancing soil moisture, which may be useful for improving orchard production in rain-fed orchards in the loess hilly and gully region of China.
AGRICULTURAL WATER MANAGEMENT
(2021)
Article
Agronomy
Pingzong Zhu, Guanghui Zhang, Hongxiao Wang, Baojun Zhang, Yingna Liu
Summary: This study investigated the response of soil moisture to precipitation properties on steep gully slopes covered by different plant communities. Results showed that precipitation amount, intensity, and soil initial water content were dominant factors affecting soil moisture at event scale. Soil moisture exhibited significant variations within different soil layers at monthly scale, and differences in soil water storage were mainly attributed to above-ground biomass, field capacity, and land surface roughness at annual scale.
AGRICULTURAL WATER MANAGEMENT
(2021)
Article
Agriculture, Multidisciplinary
R. X. Zhou, J. Wang, C. J. Tang, Y. P. Zhang, X. A. Chen, X. Li, Y. Y. Shi, L. Wang, H. B. Xiao, Z. H. Shi
Summary: Knowledge of soil water movement and water sources in subsurface flow is crucial for understanding runoff generation mechanisms and nutrient-pollution migration. This study investigated mixing processes of new water and old water at hillslopes with different farming practices using isotopic analysis. The results showed that preferred flow and piston flow existed in soil water movement, with farming practices influencing water source partitioning. Old water was found to be the dominant water source for subsurface flow, and the proportion of new water varied dynamically with rainfall.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2023)
Article
Environmental Sciences
Shun Liu, Zhaoyang Liu, Wenfeng Tan, Andrew C. Johnson, Andrew J. Sweetman, Xiaoyan Sun, Yu Liu, Chang Chen, Hao Guo, Hanyu Liu, Xiang Wan, Limei Zhang
Summary: This study investigated the source tracing and transport of PFASs from factories to agricultural fields in a fluorochemical industrial region of China. It also explored the bioaccumulation specificities and prediction of these chemicals in different vegetables, and conducted a comprehensive risk assessment considering precursor degradation. The results showed that PFASs in agricultural soils mainly came from fluorochemical manufacturing and metal processing, and alarming levels of PFASs were found in vegetables. PFASs with short carbon chain or carboxylic acid group exhibited higher transport potentials and bioaccumulation factors, and the number of Casparian strips and protein content in vegetables affected their bioaccumulation factors.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Biodiversity Conservation
Ji Liu, Tianyi Qiu, Josep Penuelas, Jordi Sardans, Wenfeng Tan, Xiaomeng Wei, Yongxing Cui, Qingliang Cui, Chuanfa Wu, Lanfa Liu, Baitao Zhou, Haoran He, Linchuan Fang
Summary: This study found that crop residue inputs can increase soil organic carbon, nitrogen, and phosphorus contents, helping to alleviate soil carbon limitation and maintain balanced soil stoichiometry. The increase in soil organic carbon and carbon-to-nitrogen (phosphorus) ratio reached saturation after around 13-16 years, while the increase in grain yield stopped. A predictive model was proposed to evaluate the potential for crop residue improvement under different soil conditions and nitrogen input levels.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Engineering, Civil
Yi Zeng, Xiangdong Meng, Bing Wang, Mengjie Li, Dan Chen, Lishan Ran, Nufang Fang, Lingshan Ni, Zhihua Shi
Summary: China has successfully implemented large-scale soil and water conservation projects on the Chinese Loess Plateau, resulting in a significant reduction of sediment flux in the Yellow River over the past 60 years. However, the impact of these measures on erosion, transport, and deposition of sediment remains challenging to quantify, which hinders further planning and adjustment of soil and water conservation measures. This study utilized unmanned aerial vehicle (UAV) photogrammetry technology, check dam surveying, and hydrologic monitoring to determine soil erosion, sediment deposition, and sediment yield in a hilly and gully watershed on the Chinese Loess Plateau. The findings revealed that check dams and vegetation restoration have effectively reduced soil erosion and sediment deposition, providing valuable insights for future soil and water conservation planning.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Meng Kou, Jingtao Hou, Chang Chen, Juan Xiong, Renhao Wei, Mingxia Wang, Wenfeng Tan
Summary: This study evaluated the single and combined effects of cadmium (Cd) and lead (Pb) on rice root elongation at various concentrations. The results showed that there was an interaction between Cd and Pb, which weakened their toxicity. Cd had a more significant inhibitory effect on Pb toxicity. The study also introduced a systematic method for assessing heavy metal interaction at different concentration levels, which may help formulate control standards for heavy metal combined pollution in agricultural land.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Ecology
Ji Liu, Linchuan Fang, Tianyi Qiu, Haijian Bing, Yongxing Cui, Jordi Sardans, Enzai Du, Ji Chen, Wenfeng Tan, Manuel Delgado-Baquerizo, Guiyao Zhou, Qingliang Cui, Josep Penuelas
Summary: This study investigated the patterns of plant-microbial N/P limitation in forests across China and found significant divergence between the two. The N/P limitation was disconnected in 42.6% of plant-microbial communities, with only 17.7% of N and 39.7% of P limitations consistent. The divergence was more evident at mid-latitudes, where plants were mainly N limited and microbes were mainly P limited. The findings were consistent with ecological stoichiometry and highlighted the importance of soil chemistry in driving the divergence.
FUNCTIONAL ECOLOGY
(2023)
Article
Geography, Physical
Zhiwen Cai, Haodong Wei, Qiong Hu, Wei Zhou, Xinyu Zhang, Wenjie Jin, Ling Wang, Shuxia Yu, Zhen Wang, Baodong Xu, Zhihua Shi
Summary: Accurate identification of crop types at the regional scale is crucial for various purposes in agriculture. This study developed a novel data-driven network, called RAUNet, based on very high-resolution images, which outperformed other methods in mapping rice-crayfish fields in China. The results show that RAUNet achieved high accuracy and had good transferability.
ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING
(2023)
Article
Environmental Sciences
Mingming Sun, Rong Yang, Yixin Tang, Dan Xiao, Wei Zhang, Zhihong Xu, Zhihua Shi, Peilei Hu, Hanqing Wu, Kelin Wang
Summary: Changes in climate and land use can disrupt the soil carbon, nitrogen, and phosphorus cycles, affecting the availability of essential nutrients differently. The impact of lithology on soil C:N:P stoichiometry across a climatic gradient remains largely unknown. This study aimed to determine the variation in nutrient limitations between karst and non-karst forests and croplands.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Environmental Sciences
Ling Wang, Baodong Xu, Jinsong Zhao, Cai Li, Yi Zeng, Yuhua Niu, Shuxia Yu, Zhen Wang, Zhi-Hua Shi
Summary: Cropland on steep slopes is crucial for smallholders to maintain food security and their livelihoods, but the social-ecological predicament on global steeply sloped cropland is largely overlooked and remains unclear. Our findings indicate that global steeply sloped cropland supports the livelihoods of approximately 168 million people. There are significant disparities in population pressure on steeply sloped cropland across different development levels, with lower-middle-income countries having the highest population density and low-income countries experiencing the largest population growth rate. Moreover, inhabitants of steeply sloped cropland, particularly those in low-income countries, face marginalization from public services and are affected by severe soil erosion and low cropland productivity.
Article
Soil Science
Haiyang Liu, Shengnan Zhang, Wei Xu, Hongen Liu, Jiangye Li, Jizheng He, Wenfeng Tan
Summary: The discovery of complete ammonia oxidizers has revolutionized our understanding of two-step nitrification. Previous studies have suggested that these organisms may outcompete canonical ammonia oxidizers under ammonia-limited conditions. However, there is currently no convincing evidence linking their activity to nitrification in acidic soils.
BIOLOGY AND FERTILITY OF SOILS
(2023)
Article
Plant Sciences
Zhen Cheng, Jingxue Zhao, Luming Ding, Zhi-Hua Shi, Paul Kardol, Gao-Lin Wu
Summary: The findings of this study demonstrate that climate factors are more important than species richness for the provisioning of ecosystem functions at large spatial scales. In summary, this study underscores the importance of considering climate factors alongside species richness when assessing ecosystem functioning across extensive geographical areas.
JOURNAL OF ECOLOGY
(2023)
Article
Engineering, Civil
R. Hao, J. Wang, X. Li, X. Huang, Z. W. Cai, Z. H. Shi
Summary: This study analyzed the hydrological responses at different time scales in 15 subtropical watersheds using data from 40-60 years. Bayesian networks were used to uncover the synergistic interactions among hydrological indicators and the role of intraannual hydrological signatures. The study also found that watershed surface alterations had a low sensitivity to discharge and sediment concentration. These findings provide insights into hydrological causality and can guide watershed risk management.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Lishan Ran, Nufang Fang, Xuhui Wang, Shilong Piao, Chun Ngai Chan, Siliang Li, Yi Zeng, Zhihua Shi, Mingyang Tian, Yi-jun Xu, Junyu Qi, Boyi Liu
Summary: Soil conservation is crucial for preserving ecosystem viability and enhancing landscape carbon (C) sequestration. In the semiarid Chinese Loess Plateau (CLP), successful soil conservation practices have resulted in a surprisingly low terrestrial-aquatic C transfer, offsetting only 7.5% of the terrestrial net ecosystem productivity. Despite high soil erosion, the CLP acts as an effective C sink, comparable to temperate forests, with additional C burial in reservoirs. These findings highlight the importance of soil conservation for enhancing landscape C sequestration capacity and have implications for regions experiencing increasing erosion intensity.
Article
Environmental Studies
Jingyu Wang, Zhen Wang, Keke Li, Cai Li, Fang Wen, Zhihua Shi
Summary: Soil erosion in cropland areas is influenced by agricultural activities and natural conditions. This study combines the coupling coordination degree model and the Shapley additive explanations method to assess the coupling coordination level between population demand, agricultural production, and soil erosion in 281 Chinese cities. The findings show the moderate coupling between population, crop yield, and soil erosion in China, with GDP and population density identified as the most important factors affecting the coordination level.
Article
Agronomy
Ji Liu, Linchuan Fang, Tianyi Qiu, Ji Chen, Hai Wang, Muxing Liu, Jun Yi, Hailin Zhang, Cong Wang, Jordi Sardans, Li Chen, Min Huang, Josep Penuelas
Summary: The combined use of organic fertilizers and crop residues can increase soil carbon, nitrogen, and phosphorus stocks, especially in the topsoil. In uplands, crop residue return can mitigate soil acidification and increase grain yield. The increase in soil carbon, nitrogen, and phosphorus stocks also depends on soil conditions and fertilizer levels.
AGRONOMY FOR SUSTAINABLE DEVELOPMENT
(2023)
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)