Article
Geosciences, Multidisciplinary
Zi-Qiang Yuan, Xin Song, Zhaozhong Feng, Jian Wang, Runzhi Wang, Evgenios Agathokleous, Chao Fang, Jordi Sardans, Josep Penuelas
Summary: Grazing exclusion is an effective management practice to restore degraded ecosystems, resulting in significant increase in soil organic carbon (SOC) and total nitrogen (N) stock. The rates of SOC and N sequestration increase with the duration of grazing exclusion. The controlling factors include the age of grazing exclusion, initial SOC and N contents, altitude, mean annual temperature, and mean annual precipitation.
Article
Agronomy
Bei Zhang, Longfei Yu, Jinsong Wang, Hongqu Tang, Zhi Qu, Tongbin Zhu
Summary: This study investigates the effects of warming and nitrogen addition on N2O emission in the Qinghai-Tibetan Plateau (QTP). The results show that warming has a negative effect on N2O emission from non-permafrost soils, while nitrogen addition has a positive impact. The study also suggests that the QTP is unlikely to become a globally significant N2O source in the near future.
AGRICULTURAL AND FOREST METEOROLOGY
(2022)
Article
Plant Sciences
Yuan Jin, Shuaibin Lai, Zhifei Chen, Chunxia Jian, Junjie Zhou, Furong Niu, Bingcheng Xu
Summary: The addition of nitrogen (N) and phosphorus (P) in a semiarid grassland community has significant effects on leaf traits and photosynthetic characteristics of dominant species, leading to a shift towards increased light harvesting ability and enhanced photosynthesis.
Article
Engineering, Environmental
Deepanshi Rajput, Anshu Baldia, Akshay Kumar, Vinod Kumar, Gunda Mohanakrishna, Kashyap Kumar Dubey
Summary: Nitrogen is crucial for life and food production, but the loss of unused nitrogen in wastewater, air, freshwater, and oceans has led to nitrogen pollution, impacting the environment and causing eutrophication, climate change, biodiversity loss, and ozone depletion. It also affects human health by causing cardio respiratory issues. Anthropogenic activities like food processing, fertilizer production, and mining have disrupted the global nitrogen cycle. Autotrophic ammonia-oxidizing microbial communities, such as AOA, AOB, and AnAOB, are widely used to remove nitrogen. New strategies, such as Anammox, Feammox, and Comammox, are being developed to reduce carbon footprint and improve nitrogen removal efficiency. This review explores the applications of autotrophic ammonia oxidizers in agriculture, wastewater treatment plants, and engineered ecosystems, as well as the stress impacts on these organisms.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biodiversity Conservation
Jingguo Sun, Congcong Liu, Jihua Hou, Nianpeng He
Summary: The study investigated stomatal traits of 181 plant species across an environmental gradient on the Loess Plateau. Results showed significant differences in stomatal traits between different grassland types and plant functional groups, with strong correlations with environmental factors.
ECOLOGICAL INDICATORS
(2021)
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
Agronomy
Zhenxing Zhou, Xiaojing Yue, Heng Li, Jiajia Zhang, Junqin Liang, Xueting Yuan, Jingyi Ru, Jian Song, Ying Li, Mengmei Zheng, Dafeng Hui, Shiqiang Wan
Summary: This study investigated the impacts of climate change on the phenological sensitivity of dominant temperate grasslands in northern China. The results showed that the sensitivity of flowering phenology to precipitation change was symmetric, while warming stimulated the phenological sensitivity. These findings suggest that arid grasslands are more sensitive to climate warming and that soil moisture and vegetation index play important roles in controlling phenological sensitivity.
AGRICULTURAL AND FOREST METEOROLOGY
(2022)
Article
Environmental Sciences
Pan-pan Li, Bing Wang, Yan-fen Yang, Guo-bin Liu
Summary: Nitrogen deposition has significant effects on soil erosion. Nitrogen addition experiment showed that moderate nitrogen addition can inhibit soil erosion, while excessive nitrogen addition exacerbates soil erosion.
JOURNAL OF MOUNTAIN SCIENCE
(2022)
Article
Environmental Sciences
Dan Wang, Youjia Liang, Lijun Liu, Jiejun Huang, Zhangcai Yin
Summary: Global warming has a significant impact on crop production in ecologically vulnerable areas. A study in China examined the potential changes in yield and yield gaps for winter wheat and maize under different climate scenarios. The results showed that maize was more adapted to climate warming than winter wheat, and future climate change could cause fluctuations in crop yields.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Biodiversity Conservation
Ke Wang, Dongsheng Zhao, Yu Zhu, Xuan Gao, Siqi Deng, Ziwei Chen, Shunsheng Wang, Yaoping Cui
Summary: Vegetation restoration reduces surface albedo and retains more heat, partially offsetting the cooling effect by absorbing CO2. Ignoring the climate feedback from albedo changes overestimates the contribution of increased vegetation in mitigating warming. A study on the Chinese Loess Plateau quantified the climatic feedback of vegetation restoration, showing a positive radiative forcing and an equivalent warming effect of emitting CO2.
ECOLOGICAL INDICATORS
(2023)
Article
Environmental Sciences
Chuang Yan, Zhiyou Yuan, Zunchi Liu, Jingjing Zhang, Kai Liu, Xinrong Shi, T. Ryan Lock, Robert L. Kallenbach
Summary: This study investigated the effects of warming and N addition on root traits in different grassland ecosystems along an aridity gradient in northern China. Results showed that warming increased root-shoot ratio in dry years but decreased root production and turnover in all grasslands, while N addition had varying effects on root traits depending on the grassland type and aridity level. Overall, warming and N addition had different impacts on root traits in the studied grasslands.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Soil Science
Zi Qi Guo, Hua Kun Zhou, Wen Jing Chen, Yang Wu, Yuan Ze Li, Lei Lei Qiao, Qi Ming You, Guo Bin Liu, Sha Xue
Summary: Long-term warming significantly increases soil erodibility in the Qinghai-Tibetan Plateau, particularly in the topsoil layer. The impact of warming on soil erodibility decreases with depth. Variations in soil aggregates and particle size distributions between different vegetation types lead to different effects of warming.
Article
Soil Science
Xiaofang Zhang, Qi Feng, Jan F. Adamowski, Asim Biswas, Jianjun Cao, Wei Liu, Yanyan Qin, Meng Zhu
Summary: Changes in land use on China's Loess Plateau have a significant impact on soil microbial communities, with grassland afforestation and the abandonment of arable land leading to changes in bacterial and fungal diversity and composition. These findings have important ecological implications and can inform land management decisions in the study area and similar ecologically-fragile regions.
APPLIED SOIL ECOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Xiaodan Guan, Wen Sun, Xiangning Kong, Fanyu Zhang, Jianping Huang, Yongli He
Summary: Rain-induced loess landslides are common in the Chinese Loess Plateau (CLP) and have caused numerous casualties and significant socioeconomic losses. Extreme precipitation is the main cause of these landslides. This study examines the correlation between extreme precipitation indices, single continuous precipitation events, and fatal landslides in the CLP. The findings suggest that the CLP may experience more fatal landslides in the future due to increasing extreme rainfall events, particularly in scenarios with high greenhouse gas emissions.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Ecology
Jingkang Liao, Mingzhen Lu, Huijie Gu, Binyu Luo, Xin Jing, Jin-Sheng He
Summary: This perspective piece aims to establish a baseline understanding of the spatial distribution of ants on the Tibetan Plateau, evaluate their response to climate change, and identify future research avenues to elucidate the impacts of warming-induced ant expansion.
Article
Agronomy
Sean A. Bloszies, S. Chris Reberg-Horton, Joshua L. Heitman, Alex L. Woodley, Julie M. Grossman, Shuijin Hu
Summary: Cover crops and termination methods have different effects on soil microbes, soil aggregates, and C and N pools. The quantity and quality of biomass of different cover crops dominated the effects on labile C.
Article
Ecology
Fuwei Wang, Zhen Li, Fanglong Su, Hui Guo, Peng Wang, Jiuxin Guo, Weixing Zhu, Yi Wang, Shuijin Hu
Summary: Nitrogen inputs, not warming, altered bacterial community structure. Verrucomicrobia and Chloroflexi were sensitive to warming, while Saccharibacteria, Bacteroidetes and Actinobacteria responded mainly to nitrogen input. Both warming and nitrogen input increased microbial metabolic quotients, with warming significantly impacting soil microbial CLPPs through specific carbon sources like L-cysteine, oxalic acid, oxoglutaric acid and aminobutyric acid.
Article
Environmental Sciences
Chenglong Ye, Wenjuan Huang, Steven J. Hall, Shuijin Hu
Summary: Soil pH is the primary factor controlling the abundance of Fe-associated C globally, mainly by influencing the binding of C with Fe minerals. Fe-associated C shows a significant increase when soil pH decreases from 4.2 to 3.5, while the change is small when pH > 4.2.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Article
Plant Sciences
Lingyan Hu, Jiuma Sai, Jin Guo, Hui Guo, Xianhui Zhou, Shuijin Hu, Peng Wang
Summary: This study investigated the effects of an actinorhizal shrub species on the nitrogen status of soil and other plants in an alpine meadow ecosystem. The results showed that the shrub had a minor facilitation effect on the soil and neighboring plants through its nitrogen-rich leaf litter, but this effect was not enough to offset the negative impact caused by competition for resources.
Article
Agronomy
Pei Zhang, Weijian Zhang, Shuijin Hu
Summary: The experimental findings suggest that the fungivorous nematode Aphelenchus avenae and collembola Hypogastrura perplexa can enhance the activity of soil microbes and reduce the incidence of damping-off disease in tomato caused by Pythium ultimum. Therefore, effective management of soil fauna is recommended for controlling root pathogens and maintaining tomato health in organic farming systems.
Article
Plant Sciences
Xuebin Yan, Mayank Kohli, Yue Wen, Xiaoyi Wang, Yuanyuan Zhang, Fei Yang, Xianhui Zhou, Guozhen Du, Shuijin Hu, Hui Guo
Summary: Foliar fungal pathogens can reduce plant biomass and their effects can be influenced by environmental conditions. We conducted a 4-year field experiment in a Tibetan alpine meadow to examine the interactive effects of nitrogen addition, warming, and foliar pathogens on plant biomass. Our results showed that nitrogen addition weakened the positive nitrogen effect on plant biomass due to the suppression of plant community biomass by foliar fungal pathogens. Furthermore, changes in plant functional traits and reduced species richness amplified the pathogen effect under nitrogen addition.
JOURNAL OF ECOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Yu Wang, Yuanyuan Huang, Lian Song, Jiahui Yuan, Wei Li, Yongguan Zhu, Scott X. Chang, Yiqi Luo, Philippe Ciais, Josep Penuelas, Julie Wolf, Barbara J. Cade-Menun, Shuijin Hu, Lei Wang, Dengjun Wang, Zengwei Yuan, Yujun Wang, Jishuang Zhang, Ye Tao, Shenqiang Wang, Gang Liu, Xiaoyuan Yan, Chunwu Zhu
Summary: Long-term free air carbon dioxide enrichment experiments on rice plants show that plant-available phosphorus declines in paddy soils as atmospheric CO2 increases. The decline in phosphorus concentration is attributed to the production of soil organic phosphorus that is not readily available to plants, as well as increased loss through crop harvest. These findings suggest that future CO2 scenarios may lead to reduced rice yields, particularly in low-income countries, unless additional phosphorus fertilizers are applied.
Article
Multidisciplinary Sciences
Meifeng Deng, Shuijin Hu, Lulu Guo, Lin Jiang, Yuanyuan Huang, Bernhard Schmid, Chao Liu, Pengfei Chang, Shan Li, Xiaojuan Liu, Keping Ma, Lingli Liu
Summary: Mycorrhizae are symbiotic associations between terrestrial plants and fungi. The type of mycorrhizae critically controls the effect of diversity on productivity. AM trees increase productivity with increasing diversity, while EcM trees decrease productivity. This is because AM trees are more effective in acquiring nitrogen and phosphorus.
Article
Soil Science
Chenglong Ye, Bin Wu, Tongshuo Bai, Xianhui Zhou, Hui Guo, Guozhen Du, Shuijin Hu
Summary: Soils in alpine ecosystems store a large amount of organic carbon, with a significant portion sorbed to reactive soil minerals. This study examined the effects of air warming, nitrogen input, and precipitation changes on calcium- and iron-associated carbon dynamics in a Tibetan alpine meadow. The results showed that high rainfall significantly increased the concentrations of calcium- and iron-associated carbon, likely due to increased soil moisture and the promotion of their formation through Ca-binding to clay surfaces or increased solubility of Fe oxides.
Article
Biodiversity Conservation
Kangcheng Zhang, Yunpeng Qiu, Yunfeng Zhao, Shuhong Wang, Jun Deng, Mengfei Chen, Xinyu Xu, Hao Wang, Tongshuo Bai, Tangqing He, Yi Zhang, Huaihai Chen, Yi Wang, Shuijin Hu
Summary: The study investigated the effects of precipitation reduction on soil N2O and CO2 emissions in a semi-arid grassland. The results showed that precipitation reduction stimulated N-cycling processes and increased soil N2O and CO2 emissions, particularly after rainfall events. The findings suggest that future changes in precipitation patterns may enhance N cycling processes and soil N2O emissions in semi-arid ecosystems.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Biodiversity Conservation
Chenchao Xu, Naifang Zhang, Kaihang Zhang, Shuyao Li, Qing Xia, Jing Xiao, Maojun Liang, Weilei Lei, Junpan He, Gaiping Chen, Chengjun Ge, Xunhua Zheng, Jianguo Zhu, Shuijin Hu, Roger T. T. Koide, Mary K. K. Firestone, Lei Cheng
Summary: Continued emissions of CO2 and CH4 will significantly increase global atmospheric CO2 and CH4 concentrations and surface temperature. Paddy rice fields account for about 9% of anthropogenic CH4 sources, and elevated CO2 may enhance CH4 production in rice paddies. This study reveals that elevated CO2 promotes anaerobic oxidation of methane coupled to manganese and/or iron oxides reduction in paddy soil, as well as stimulates the growth and metabolism of Candidatus Methanoperedens nitroreducens, contributing to enhanced CH4 consumption.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Biodiversity Conservation
Tongshuo Bai, Peng Wang, Yunpeng Qiu, Yi Zhang, Shuijin Hu
Summary: Global climate warming has no significant effect on soil carbon (C) stock, but it can increase root biomass and soil respiration, depending on soil nitrogen (N) availability. The availability of soil C to N critically mediates warming effects on soil C dynamics, and incorporating this into C-climate models may improve the prediction of soil C cycling under future global warming scenarios.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Soil Science
Mu Su, Jiajie Mei, Gilberto de Oliveira Mendes, Da Tian, Limin Zhou, Shuijin Hu, Zhen Li
Summary: Red soils in subtropical regions are often deficient in available phosphorus, which is essential for plant growth. Phosphate-solubilizing microorganisms (PSMs) can release phosphorus from phosphate reservoirs, but their interactions with minerals in red soils are not fully understood. This study investigated the effects of Aspergillus niger, a phosphate-solubilizing fungus, on phosphorus dissolution in acidic and alkaline red soils. In the acidic soil, A. niger promoted phosphorus release and decreased the content of Fe/Al oxides. In the alkaline soil, phosphorus availability declined after A. niger addition due to the diminished function of PSMs and strong soil buffering.
SOIL USE AND MANAGEMENT
(2023)
Review
Multidisciplinary Sciences
Lingli Liu, Emma J. Sayer, Meifeng Deng, Ping Li, Weixing Liu, Xin Wang, Sen Yang, Junsheng Huang, Jie Luo, Yanjun Su, Jose M. Grunzweig, Lin Jiang, Shuijin Hu, Shilong Piao
Summary: Grassland, despite being one of the largest terrestrial biomes, is facing degradation and desertification due to global climate change and land-use intensification. The carbon cycle in grasslands plays a crucial role in maintaining ecosystem services, and its processes are influenced by abiotic factors such as soil inorganic C accumulation, photodegradation, thermal degradation, and wind erosion. Climate and land-use changes further affect the grassland carbon balance by modifying water budget, nutrient cycling, and plant and soil processes. It is important to prioritize research on abiotic processes, improve monitoring techniques, and select suitable plant species to develop sustainable grassland restoration strategies in a changing climate.
FUNDAMENTAL RESEARCH
(2023)
Article
Biodiversity Conservation
Huan Li, Guang-Hui Yu, Liping Hao, Yunpeng Qiu, Shuijin Hu
Summary: Soil organic carbon is crucial for sustaining terrestrial productivity and climate stability. Arbuscular mycorrhizal fungi (AMF) play a critical role in modulating soil carbon dynamics. However, it is still unknown how AMF-root associations interact with soil minerals to affect soil carbon cycling.
GLOBAL CHANGE BIOLOGY
(2023)