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Sustained increases in soil respiration accompany increased carbon input under long-term warming across global grasslands

文献类型：期刊论文

作者Yan, Yingjie6,7; Wang, Jinsong7; Tian, Dashuan7; Luo, Yiqi5; Xue, Xian4; Peng, Fei4; He, Jin-Sheng3; Liu, Lingli2; Jiang, Lifen5; Wang, Xin2
刊名GEODERMA
出版日期2022-12-15
卷号428页码:11
ISSN号0016-7061
关键词Climate warming Soil respiration Net primary productivity Meta-analysis Grassland
DOI10.1016/j.geoderma.2022.116157
通讯作者Niu, Shuli(sniu@igsnrr.ac.cn)
英文摘要Respiratory effluxes of carbon (C) from the soil to the atmosphere are expected to rise with temperature, potentially intensifying future climate warming. However, whether and how this increase would be sustained under long-term warming is not well understood. Here, we combined a manipulation experiment in an alpine meadow with a global meta-analysis to explore the mechanisms underlying the long-term responses of soil respiration to climate warming. The results from the experiment in the alpine meadow showed that the warming-induced increase in net primary productivity (NPP, 23.6 %) explained 52 % of the increase in soil respiration across 6 years. In contrast, the warming-induced changes in soil moisture, soil temperature, microbial biomass C or nitrogen were not significantly correlated with soil respiration responses. Consistently, in the global meta- analysis, both soil respiration and NPP continually increased over the years by an average of 9.5 % and 15.9 %, respectively. The increases in soil respiration were also primarily correlated with the continued increases in NPP over this period. Notably, the sustained increase in soil respiration was mainly contributed by the response of autotrophic respiration, which was closely correlated with the sustained increase in belowground NPP under warming. The results from both our field experiment and meta-analysis suggest that the increased soil respiration under climate warming was at least partly from the stimulation of C input in grasslands. The simultaneous in-creases in soil respiration and NPP may counteract the expected positive terrestrial C-climate feedback and should be considered in land models to more accurately predict future climate change.
WOS关键词NET PRIMARY PRODUCTIVITY ; INTERANNUAL VARIABILITY ; ECOSYSTEM CARBON ; CYCLE FEEDBACK ; AUTOTROPHIC RESPIRATION ; SEMIARID ECOSYSTEMS ; THERMAL ADAPTATION ; ELEVATED CO2 ; RESPONSES ; IMPACTS
资助项目National Natural Science Foundation of China[31625006] ; National Natural Science Foundation of China[31988102] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program[2019QZKK0302]
WOS研究方向Agriculture
语种英语
出版者ELSEVIER
WOS记录号WOS:000874918500003
资助机构National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program
源URL[http://ir.igsnrr.ac.cn/handle/311030/186194]  
专题中国科学院地理科学与资源研究所
通讯作者Niu, Shuli
作者单位1.Inner Mongolia Univ, Sch Ecol & Environm, Dept Ecol, Hohhot 010021, Peoples R China
2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Xiangshan 100093, Beijing, Peoples R China
3.Lanzhou Univ, Inst Innovat Ecol, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosystems, Lanzhou 730000, Peoples R China
4.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China
5.No Arizona Univ, Ctr Ecosyst Sci & Soc, Flagstaff, AZ 86011 USA
6.Univ Chinese Acad Sci, Dept Ecol & Environm, Beijing 100049, Peoples R China
7.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Yan, Yingjie,Wang, Jinsong,Tian, Dashuan,et al. Sustained increases in soil respiration accompany increased carbon input under long-term warming across global grasslands[J]. GEODERMA,2022,428:11.
APA Yan, Yingjie.,Wang, Jinsong.,Tian, Dashuan.,Luo, Yiqi.,Xue, Xian.,...&Niu, Shuli.(2022).Sustained increases in soil respiration accompany increased carbon input under long-term warming across global grasslands.GEODERMA,428,11.
MLA Yan, Yingjie,et al."Sustained increases in soil respiration accompany increased carbon input under long-term warming across global grasslands".GEODERMA 428(2022):11.

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来源：地理科学与资源研究所

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