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
Green & Sustainable Science & Technology
Mutair A. Akanji, Adel R. A. Usman, Mohammad I. Al-Wabel
Summary: The study found that acidified biochar can improve the availability of micronutrients in alkaline soils, and biochar produced at higher temperatures can reduce CO2 emissions from soil carbon sequestration.
Article
Environmental Sciences
Yuan Liu, Amit Kumar, Lisa K. Tiemann, Jie Li, Jingjing Chang, Li Xu, Nianpeng He
Summary: The study aimed to investigate the impact of changes in substrate availability on the temperature response of soil organic carbon (SOC) mineralization. The results showed that the temperature response varied with soil depth and type, and was influenced by substrate availability and soil inorganic N content.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Biodiversity Conservation
Luiz A. A. Domeignoz-Horta, Grace Pold, Hailey Erb, David Sebag, Eric Verrecchia, Trent Northen, Katherine Louie, Emiley Eloe-Fadrosh, Christa Pennacchio, Melissa A. A. Knorr, Serita D. D. Frey, Jerry M. M. Melillo, Kristen M. M. DeAngelis
Summary: Microbes play a crucial role in cycling carbon through soils, and understanding their physiological response to warming is important for predicting soil carbon stocks under climate change. This study investigated the long-term impacts of warming on microbial physiology and found that microbial thermal acclimation and changes in substrate availability both contribute to these impacts. Additionally, seasonal inputs of fresh litter counteract the apparent thermal acclimation of carbon-cycling processes in response to warming. These findings highlight the indirect effects of long-term warming on microbial physiology and suggest the need for earth system models to incorporate these feedbacks.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Soil Science
Yuan Liu, Li Xu, Shuai Zheng, Zhi Chen, Yingqiu Cao, Xuefa Wen, Nianpeng He
Summary: The addition of labile carbon significantly increased soil microbial respiration rate and temperature sensitivity at a large geographical scale, particularly in mid-latitude regions. Q(10) was significantly negatively correlated with the soil carbon availability index, suggesting that basal substrate availability has a strong influence on Q(10) after labile carbon addition.
SOIL BIOLOGY & BIOCHEMISTRY
(2021)
Article
Plant Sciences
Ruiqiang Liu, Yanghui He, Guiyao Zhou, Junjiong Shao, Lingyan Zhou, Huimin Zhou, Nan Li, Bingqian Song, Chao Liang, Enrong Yan, Xiaoyong Chen, Xihua Wang, Minhuang Wang, Shahla Hosseini Bai, Xuhui Zhou, Richard P. Phillips
Summary: The study found that mycorrhizal fungi have differential effects on soil carbon dynamics in different successional forests, inhibiting CO2 fluxes in early-successional forests and enhancing CO2 release in mid- and late-successional forests. These effects are related to competition between mycorrhizal fungi and saprotrophs, as well as changes in soil nitrogen mineralization and microbial activities.
JOURNAL OF ECOLOGY
(2021)
Article
Environmental Sciences
L. Castaneda-Gomez, J. R. Powell, E. Pendall, Y. Carrillo
Summary: This study investigated the interactive effects of AM fungi and P availability on soil C cycling under eCO(2), finding that AM fungi can promote root biomass growth and nutrient uptake while protecting the SOM pool against decomposition.
Article
Plant Sciences
Yaru Yang, Weiguo Liu, Jonathan M. Adams, Bin Song
Summary: The removal of snow-cover reduces soil nutrients, enzyme activities, and bacterial diversity in the desert ecosystem. Nitrogen deposition indirectly affects the bacterial community through modifications to soil nutrients and organic matter. This study highlights the critical role of snow-cover and raises awareness of the ecological risks of biological soil crusts in future global change.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Biology
Stephen James Coulson, Peter Convey, Sil Schuuring, Simone Iris Lang
Summary: The Arctic has a diverse terrestrial microarthropod fauna that plays a key role in ecosystem processes and has tolerance to winter conditions. However, rapid climate change in the Arctic is modifying the conditions experienced by these fauna, with alterations in temperatures, precipitation, and wind direction. A manipulative experiment using snow pack and extended incubator treatments revealed the temperature limits of cold tolerance for different microarthropod groups.
JOURNAL OF THERMAL BIOLOGY
(2023)
Article
Biodiversity Conservation
Fan Yang, Xiangyin Ni, Xin Zeng, Han Li, Bo Tan, Ziyi Liang, Bowen Liu, Zhenfeng Xu, Jian Zhang
Summary: The study found that snowpack reduction had significant effects on the concentrations of dissolved organic carbon and nitrogen, nitrate concentration, and microbial biomass in different snow periods; although snowpack reduction did not significantly affect soil microbial biomass, it had a stronger impact on nitrate concentration and microbial respiration rate, especially in organic soil.
GLOBAL ECOLOGY AND CONSERVATION
(2021)
Article
Soil Science
Xianzhen Luo, Lingling Zhang, Yongbiao Lin, Dazhi Wen, Enqing Hou
Summary: This study explored the dynamics of soil organic carbon (SOC) stock in response to experimental phosphorus (P) additions. The results showed that P additions significantly increased SOC stock globally, with the effect depending on soil nitrogen (N) availability. Under high N availability, P additions mainly increased plant biomass and litterfall, while under low N availability, P additions not only increased plant biomass and litterfall, but also soil microbial biomass and oxidase activity. However, the increases in aboveground biomass and litterfall did not lead to corresponding carbon accumulation in the soil, possibly due to microbial CO2 release. Reactive N input reduced P-addition-induced carbon loss and enhanced the effect of P additions on SOC.
SOIL BIOLOGY & BIOCHEMISTRY
(2023)
Article
Soil Science
Mengguang Han, Jiguang Feng, Ying Chen, Lijuan Sun, Liangchen Fu, Biao Zhu
Summary: The study showed that R-Myc is a significant component of soil respiration, contributing to both soil respiration and autotrophic respiration. It exhibits a different geographical pattern from R-Root and should be considered separately in terrestrial carbon cycling models.
SOIL BIOLOGY & BIOCHEMISTRY
(2021)
Article
Forestry
Ikhyun Kim, Sang-Kyun Han, Mauricio Acuna, Heesung Woo, Jae-Heun Oh, Byoungkoo Choi
Summary: Mechanized timber harvesting is efficient and productive, but it can lead to environmental issues such as soil compaction and elevated CO2 concentrations. Soil conditions, including bulk density, CO2 concentrations, and water content, were significantly affected by machine traffic in this study. Reduced CO2 efflux and higher CO2 concentrations were observed in compacted areas with high soil temperatures.
Article
Meteorology & Atmospheric Sciences
Jiacheng Wu, Yonggang Liu
Summary: Using a climate model, we found that the snowball Earth climate is sensitive to orbital configurations, even in a simplified situation. Different orbital configurations can lead to significant differences in global average annual surface temperature and maximum monthly mean temperature. The climatic effect of a specific orbital parameter is dependent on the values of other parameters.
JOURNAL OF CLIMATE
(2023)
Article
Environmental Sciences
Ruochen Zhi, Jian Deng, Yuling Xu, Miaoping Xu, Shuohong Zhang, Xinhui Han, Gaihe Yang, Chengjie Ren
Summary: In this study, a metagenomics approach was used to investigate the composition and diversity of microbial P genes along a 45-year recovery sequence of Robinia pseudoacacia on the Loess Plateau. The results showed that afforestation significantly increased the diversity of P cycling genes and led to clear differences in community composition. These findings highlight the role of afforestation in enhancing microbial P cycling genes and improving soil P availability.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)