Article
Geosciences, Multidisciplinary
Jialuo Yu, Haijian Bing, Ruiying Chang, Yongxing Cui, Guoting Shen, Xiangxiang Wang, Shangpeng Zhang, Linchuan Fang
Summary: This study investigated the response of microbial metabolism in alpine grassland soil to warming, and found that microbial metabolism was limited by carbon and phosphorus. Experimental warming decreased microbial carbon limitation in the topsoil, but not the subsoil.
Article
Soil Science
Tian Ma, Zhiying Yang, Biwan Shi, Wenjing Gao, Yifan Li, Jianxiao Zhu, Jin-Sheng He
Summary: Increased nitrogen and phosphorus inputs have significant effects on soil organic carbon composition and dynamics. However, the responses of plant-derived and microbial-derived SOC components to N and P addition in alpine grasslands are not well understood. A 10-year N and P addition experiment in Tibetan Plateau grasslands revealed that P and N + P addition decreased microbial necromass, while N addition had no significant effect. The addition of P increased lignin phenols in the topsoil, but N addition decreased them in the subsoil. In addition, the ratio of fungi-to-bacteria necromass carbon and amino sugars to lignin phenols decreased with P supply, indicating a potential increase in SOC loss.
Article
Biodiversity Conservation
Qi Qi, Jianshu Zhao, Renmao Tian, Yufei Zeng, Changyi Xie, Qun Gao, Tianjiao Dai, Hao Wang, Jin-Sheng He, Konstantinos T. Konstantinidis, Yunfeng Yang, Jizhong Zhou, Xue Guo
Summary: The alpine grasslands of the Tibetan Plateau store a significant amount of soil organic carbon, and climate warming has a strong impact on the microbial community and functional genes in the soil, leading to increased methane and carbon dioxide uptake and emissions. Microbially enhanced methane uptake in alpine grasslands may play a crucial role in mitigating climate warming.
GLOBAL CHANGE BIOLOGY
(2022)
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
Long-Fei Chen, Zhi-Bin He, Xiu-Rong Wu, Jun Du, Xi Zhu, Peng-Fei Lin, Quan-Yan Tian, Jun-Qia Kong
Summary: This study found that forest planting can increase the richness and diversity of soil microbial communities, promote an increase in soil respiration rates, and this increase is closely related to factors such as microbial community abundance, diversity, SOC, NO3--N, and soil pH.
APPLIED SOIL ECOLOGY
(2021)
Article
Environmental Sciences
Feng Sun, Ruiying Chang, Akash Tariq, Jordi Sardans, Josep Penuelas, Hui Jiang, Xingmei Zhou, Na Li
Summary: Excluding grazing in alpine meadows on the Tibetan Plateau has led to a decrease in soil nutrient concentrations. However, the effects of grazing exclusion on phosphorus cycling in these meadows, especially under climatic warming, are unclear.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Biodiversity Conservation
Danghui Xu, Wenbo Mou, Xiejun Wang, Ruiying Zhang, Tianpeng Gao, Dexiecuo Ai, Jianli Yuan, Renyi Zhang, Xiangwen Fang
Summary: Grassland degeneration significantly decreases net CO2 uptake, gross primary productivity, ecosystem respiration, plant respiration, and heterotrophic respiration. Degradation also alters the carbon balance of the ecosystem, further impacting carbon-climate feedbacks.
ECOLOGICAL INDICATORS
(2022)
Article
Microbiology
Qi Qi, Yue Haowei, Zhenhua Zhang, Joy D. Van Nostrand, Linwei Wu, Xue Guo, Jiajie Feng, Mengmeng Wang, Sihang Yang, Jianshu Zhao, Qun Gao, Qiuting Zhang, Mengxin Zhao, Changyi Xie, Zhiyuan Ma, Jin-Sheng He, Haiyan Chu, Yi Huang, Jizhong Zhou, Yunfeng Yang
Summary: The study found that microbial communities, plants, and soil carbon fluxes in alpine grasslands are significantly influenced by climate change. Future soil carbon fluxes can be predicted by microbial carbon-degrading capacities, indicating the importance of microbial traits in ecosystem functioning and carbon dynamics in these environments.
Article
Environmental Sciences
Zhenchao Zhang, Tianyu Zhan, Yanpeng Li, Yi Wang, Ting Yu, Juan Sun
Summary: Grassland degradation leads to a decrease in soil organic carbon (SOC) stock, with a larger reduction in alpine meadows compared to alpine steppes. The variation in SOC stock is positively correlated with belowground biomass in both alpine meadows and steppes, and with aboveground biomass only in alpine steppes. The relationship between change rates in SOC stock and initial SOC stock and mean annual precipitation is negative during lightly and moderately degraded stages, but becomes nonsignificant during heavily degraded stage. These findings have implications for sustainable management practices of alpine grasslands on the Qinghai-Tibetan Plateau.
LAND DEGRADATION & DEVELOPMENT
(2023)
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
Environmental Sciences
Songbo Qu, Xu-Ri, Jiaoneng Yu, Fengzi Li, Da Wei, Almaz Borjigidai
Summary: The study conducted in alpine steppe found that atmospheric N deposition can alter the exchange of greenhouse gases, with N2O emissions increasing with increasing N addition rate, but diminishing after reaching a critical threshold of 40 kgN ha(-1) a(-1). This suggests that future N deposition may offset N-induced carbon sequestration, leading to a heating effect on the climate.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Civil
Yu Liu, Di Wang, Zeng Cui, Shixiong Li, Runjie Li, Jesus Rodrigo-Comino, Manuel Lopez-Vicente, Gao-Lin Wu
Summary: Meadow patches are evidence of degradation caused by the fragmentation and disappearance of mattic epipedons. This study investigates how the loss of mattic epipedons affects soil erosion processes in alpine regions through simulated rainfall experiments. The findings highlight the importance of maintaining runoff and reducing sediment through the presence of mattic epipedons.
JOURNAL OF HYDROLOGY
(2023)
Article
Biodiversity Conservation
Ying Chen, Mengguang Han, Xia Yuan, Yanhui Hou, Wenkuan Qin, Huakun Zhou, Xinquan Zhao, Julia A. Klein, Biao Zhu
Summary: In alpine meadow ecosystems on the Qinghai-Tibetan Plateau, surface soil SOC content shows resistance to climate warming, while plant respiration is accelerated. The warming effect on SOC is not correlated with experimental and environmental variables.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Plant Sciences
Dangjun Wang, Huakun Zhou, Juan Zuo, Peng Chen, Yandi She, Buqing Yao, Shikui Dong, Jianshuang Wu, Fan Li, Denis Mburu Njoroge, Guoxi Shi, Xufeng Mao, Li Ma, Zhonghua Zhang, Zhun Mao
Summary: The study investigates the impact of degradation and restoration processes on the dynamics of microbial community and soil quality in alpine grasslands on the Tibetan Plateau. It finds that heavy degradation significantly deteriorates soil quality, and fungal communities are more sensitive to grassland succession than bacterial communities. The findings suggest that artificial grasslands can be effective in restoring degraded grasslands, but the soil functions may not fully recover even after 10 years of restoration.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Biodiversity Conservation
Mengke Cai, Guang Zhao, Bo Zhao, Nan Cong, Zhoutao Zheng, Juntao Zhu, Xiaoqing Duan, Yangjian Zhang
Summary: Climate warming will significantly impact variations in soil organic carbon, especially in alpine ecosystems. Microbial necromass carbon is a key contributor to stable soil organic carbon pools. However, the accumulation and persistence of soil microbial necromass carbon under different levels of warming are poorly understood.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Environmental Sciences
Qina Yan, Phong V. V. Le, Dong K. Woo, Tingyu Hou, Timothy Filley, Praveen Kumar
WATER RESOURCES RESEARCH
(2019)
Article
Soil Science
Xueli Ding, Bin Zhang, Timothy R. Filley, Chunjie Tian, Xudong Zhang, Hongbo He
BIOLOGY AND FERTILITY OF SOILS
(2019)
Article
Microbiology
Javier A. Ceja-Navarro, Ulas Karaoz, Markus Bill, Zhao Hao, Richard A. White, Abelardo Arellano, Leila Ramanculova, Timothy R. Filley, Timothy D. Berry, Mark E. Conrad, Meredith Blackwell, Carrie D. Nicora, Young-Mo Kim, Patrick N. Reardon, Mary S. Lipton, Joshua N. Adkins, Jennifer Pett-Ridge, Eoin L. Brodie
NATURE MICROBIOLOGY
(2019)
Article
Biochemistry & Molecular Biology
Klaas G. J. Nierop, Gerard J. M. Versteegh, Timothy R. Filley, Jan W. de Leeuw
Article
Soil Science
Xueli Ding, Bin Zhang, Zhanbo Wei, Hongbo He, Timothy R. Filley
BIOLOGY AND FERTILITY OF SOILS
(2020)
Article
Soil Science
Xinxin Jin, Aaron R. Gall, Muhammad Farhan Saeed, Shuangyi Li, Timothy Filley, Jingkuan Wang
SOIL & TILLAGE RESEARCH
(2020)
Article
Soil Science
Ming Li, Erika J. Foster, Phong V. V. Le, Qina Yan, Andrew Stumpf, Tingyu Hou, A. N. (Thanos) Papanicolaou, Kenneth M. Wacha, Christopher G. Wilson, Jingkuan Wang, Praveen Kumar, Timothy Filley
Article
Engineering, Electrical & Electronic
Jose Waimin, Hongjie Jiang, David A. Detwiler, Martha E. Jimenez-Castaneda, Zeynep Mutlu, Mukerrem Cakmak, Tim Filley, Rahim Rahimi
Summary: Bacteria play essential roles in soil health maintenance, and real-time monitoring of their activity levels can provide insights into soil quality, nutrient availability, and future crop yields. A non-destructive technique for monitoring cellulase activity of microorganisms in targeted ecosystems has been demonstrated using a cellulose acetate membrane. The proposed method shows potential for in-field measurements and real-time assessment of microbial activity, with implications for precision agricultural applications.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Soil Science
Tingyu Hou, Timothy R. Filley, Yanan Tong, Benjamin Abban, Sarmistha Singh, A. N. Thanos Papanicolaou, Kenneth M. Wacha, Christopher G. Wilson, Indrajeet Chaubey
Summary: This study highlights the importance of tillage practices on soil erosion and organic matter loss, with contour tillage enhancing organic carbon content and reducing decomposition, while controlling the movement of particles; however, parallel tillage orientation can result in higher sediment mobilization.
SOIL & TILLAGE RESEARCH
(2021)
Article
Environmental Sciences
Ashley D. Keiser, Robert Warren, Timothy Filley, Mark A. Bradford
Summary: Photodegradation contributes to similar leaf litter mass loss rates in mesic environments and drylands, despite water limitations in the latter. Our study in the Southern Appalachian Mountains showed that during the non-growing season, exposure to maximum solar radiation led to decreased proportions of oxidized lignin relative to other carbon compounds in leaf litter. This phenomenon was particularly strong on south-facing slopes with higher solar radiation levels.
Article
Computer Science, Information Systems
S. R. Jino Ramson, Walter D. Leon-Salas, Zachary Brecheisen, Erika J. Foster, Cliff T. Johnston, Darrell G. Schulze, Timothy Filley, Rahim Rahimi, Martin Juan Carlos Villalta Soto, Juan A. Lopa Bolivar, Mauricio Postigo Malaga
Summary: The development and validation of an Internet-of-Things (IoT) system for continuous soil health monitoring were reported in this study. Significant experiments demonstrated the system's flexibility, wireless communication range, power consumption, and the ability to sustainably operate using solar panel charging. The system can transmit real-time data of soil temperature, moisture, electrical conductivity, CO2 concentration, and geolocation wirelessly for long-term storage and analysis, offering a new method and tool for soil health monitoring.
IEEE INTERNET OF THINGS JOURNAL
(2021)
Article
Soil Science
Xin Wang, Weiwei Dai, Timothy R. Filley, Chao Wang, Edith Bai
Summary: This study found significant changes in biopolymers (lignin, substituted fatty acids, amino sugars) in soil after five years of aboveground litter addition or removal treatments in a temperate forest, suggesting potential impacts on soil organic carbon composition and stability. Although soil nitrogen and carbon contents were not affected, the presence or absence of aboveground litter had a selective effect on the chemical composition of soil organic carbon in different soil depths.
SOIL BIOLOGY & BIOCHEMISTRY
(2021)
Article
Chemistry, Physical
Zheng Li, Mehran Dadsetan, Junxian Gao, Sensen Zhang, Lirong Cai, Ali Naseri, Martha E. Jimenez-Castaneda, Timothy Filley, Jeffrey T. Miller, Murray J. Thomson, Vilas G. Pol
Summary: This study investigates the thermal runaway mechanisms of Prussian blue analogs in nonaqueous sodium- and potassium-ion batteries, revealing a new runaway mechanism that does not involve oxygen evolution, and identifying safety issues related to cyanide release and exothermic reactions with the electrolyte. Calorimetric studies at the full-cell level show mitigated heat generation but lower initiation temperature of runaway compared to conventional systems, suggesting that PBA materials cannot be considered as safe cathodes and highlighting the importance of crystal defects and trapped water content in thermal safety.
ADVANCED ENERGY MATERIALS
(2021)
Article
Water Resources
Neal E. Blair, Elmer Arthur Bettis, Timothy R. Filley, Jessie A. Moravek, A. N. Thanos Papanicolaou, Adam S. Ward, Christopher G. Wilson, Nina Zhou, Breanna Kazmierczak, Jieun Kim
Summary: Streams and rivers integrate and transport particulate organic carbon (POC) from various sources, especially during storm events. The study in Iowa, U.S.A. identified a temporal sequence of POC inputs during storms, with significant changes in POC suspended in the water. The longitudinal evolution of the POC signal downstream has implications for understanding soil erosion and organic geochemical sedimentary records.
FRONTIERS IN WATER
(2021)