中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Varying soil respiration under long-term warming and clipping due to shifting carbon allocation toward below-ground

文献类型:期刊论文

作者Yan, Yingjie1,2,3; Quan, Quan1,2,3; Meng, Cheng2; Wang, Jinsong2; Tian, Dashuan2; Wang, Bingxue2; Zhang, Ruiyang2; Niu, Shuli1,2,3
刊名AGRICULTURAL AND FOREST METEOROLOGY
出版日期2021-07-15
卷号304页码:9
ISSN号0168-1923
关键词Climate warming Biofuel harvest Soil respiration Net primary productivity Carbon allocation
DOI10.1016/j.agrformet.2021.108408
通讯作者Niu, Shuli(sniu@igsnrr.ac.cn)
英文摘要Global 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.
WOS关键词NET PRIMARY PRODUCTIVITY ; GLOBAL CLIMATE-CHANGE ; INTERANNUAL VARIABILITY ; TEMPERATURE SENSITIVITY ; AUTOTROPHIC RESPIRATION ; TERRESTRIAL ECOSYSTEMS ; ORGANIC-CARBON ; CYCLE FEEDBACK ; PLANT BIOMASS ; CO2 EFFLUX
资助项目National Natural Science Foundation of China[31988102] ; National Natural Science Foundation of China[31625006] ; Chinese Academy of Sciences[XDA23080302]
WOS研究方向Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
语种英语
出版者ELSEVIER
WOS记录号WOS:000652014300025
资助机构National Natural Science Foundation of China ; Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/163931]  
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.Univ Chinese Acad Sci, Dept Ecol, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Dept Environm, Beijing, Peoples R China
推荐引用方式
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.

入库方式: OAI收割

来源:地理科学与资源研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。