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Divergent Trajectory of Soil Autotrophic and Heterotrophic Respiration upon Permafrost Thaw

Environmental Science & Technology, 2022
Warming-induced permafrost thaw may stimulate soil respiration (Rs) and thus cause a positive feedback to climate warming. However, due to the limited in situ observations, it remains unclear about how Rs and its autotrophic (Ra) and heterotrophic (Rh) components change upon permafrost thaw. Here we monitored variations in Rs and its components along a
Guanqin Wang   +13 more
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Effects of drought and rainfall events on soil autotrophic respiration and heterotrophic respiration

Agriculture, Ecosystems & Environment, 2021
Abstract The changes of surface vegetation cover, caused by the return of farmland to forest and grassland, can not only effectively control soil erosion, but also significantly increase soil organic carbon reserves. However, few studies are currently available on the control mechanism of soil CO2 emission after artificial vegetation restoration ...
Pengfei Zheng   +6 more
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Globally rising soil heterotrophic respiration over recent decades

Nature, 2018
Global soils store at least twice as much carbon as Earth's atmosphere1,2. The global soil-to-atmosphere (or total soil respiration, RS) carbon dioxide (CO2) flux is increasing3,4, but the degree to which climate change will stimulate carbon losses from soils as a result of heterotrophic respiration (RH) remains highly uncertain5-8.
Ben, Bond-Lamberty   +4 more
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Estimates of soil heterotrophic respiration in global terrestrial ecosystems

2023
Soil heterotrophic respiration (RH) is one of the largest and most uncertain components of terrestrial carbon cycle, which reflects the carbon loss from soils to the atmosphere due to microbial decomposition of soil organic carbon and litter debris. However, RH estimates vary greatly using different approaches, requiring RH estimates from different ...
Xiaolu Tang, Zhihan Yang, Tao Zhou
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