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Varying soil respiration under long-term warming and clipping due to shifting carbon allocation toward below-ground
Yan, Yingjie1,2,3; Quan, Quan1,2,3; Meng, Cheng1; Wang, Jinsong1; Tian, Dashuan1; Wang, Bingxue1; Zhang, Ruiyang1; Niu, Shuli1,2,3
2021-07-15
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
ISSN0168-1923
Volume304Pages:9
Corresponding AuthorNiu, Shuli(sniu@igsnrr.ac.cn)
AbstractGlobal warming and land-use change have profound impacts on soil respiration (R-s), with consequent changes in carbon exchange between terrestrial ecosystem and atmosphere and its feedback to climate change. However, it is not clear how soil respiration and its components (heterotrophic respiration, R-h; and autotrophic respiration, R-a) respond to long-term warming and clipping in alpine meadow, and what are the controlling factors for the responses of soil respiration. To answer these questions, we conducted a field experiment of warming and clipping in an alpine meadow on the Qinghai-Tibet Plateau from 2014 to 2019. Infrared heaters were used to simulate climate warming and plots were clipped once a year to mimic hay or biofuel harvest. The results showed that warming decreased R-h by 5.06% but stimulated R-a by 10.08% across years, while clipping enhanced R-s, R-h and R-a by 12.31%, 18.65% and 1.29%, respectively, and marginally interacted with warming in impacting R-a across the years. Furthermore, the warming effect on soil respiration and its components varied largely over years, which was mostly attributable to the changes in the ratio of above-ground to below-ground net primary productivity (ANPP/BNPP, A/B) and soil temperature. Increased allocation of photosynthate toward below-ground caused the gradual increase in R-a and R-s under long-term warming. While soil temperature changes explained the variation of warming effects on R-h across years. The results demonstrated that soil respiration and its components in the alpine meadow are highly sensitive to climate warming and hay harvest but with large interannual variations in their responses. We highlight that plant carbon allocation is an emerging property in determining soil respiration under climate warming.
KeywordClimate warming Biofuel harvest Soil respiration Net primary productivity Carbon allocation
DOI10.1016/j.agrformet.2021.108408
WOS KeywordNET PRIMARY PRODUCTIVITY ; GLOBAL CLIMATE-CHANGE ; INTERANNUAL VARIABILITY ; TEMPERATURE SENSITIVITY ; AUTOTROPHIC RESPIRATION ; TERRESTRIAL ECOSYSTEMS ; ORGANIC-CARBON ; CYCLE FEEDBACK ; PLANT BIOMASS ; CO2 EFFLUX
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[31988102] ; National Natural Science Foundation of China[31625006] ; Chinese Academy of Sciences[XDA23080302]
Funding OrganizationNational Natural Science Foundation of China ; Chinese Academy of Sciences
WOS Research AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS SubjectAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS IDWOS:000652014300025
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/163932
Collection中国科学院地理科学与资源研究所
Corresponding AuthorNiu, Shuli
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Dept Ecol, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Dept Environm, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Yan, Yingjie,Quan, Quan,Meng, Cheng,et al. Varying soil respiration under long-term warming and clipping due to shifting carbon allocation toward below-ground[J]. AGRICULTURAL AND FOREST METEOROLOGY,2021,304:9.
APA Yan, Yingjie.,Quan, Quan.,Meng, Cheng.,Wang, Jinsong.,Tian, Dashuan.,...&Niu, Shuli.(2021).Varying soil respiration under long-term warming and clipping due to shifting carbon allocation toward below-ground.AGRICULTURAL AND FOREST METEOROLOGY,304,9.
MLA Yan, Yingjie,et al."Varying soil respiration under long-term warming and clipping due to shifting carbon allocation toward below-ground".AGRICULTURAL AND FOREST METEOROLOGY 304(2021):9.
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