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Small precipitation events enhance the Eurasian grassland carbon sink

文献类型：期刊论文

作者Legesse, Tsegaye Gemechu4,5; Dong, Gang6; Jiang, Shicheng7; Chen, Jingyan1; Dong, Xiaobing4,5; Daba, Nano Alemu4,5; Sorecha, Eba Muluneh8; Qu, Luping3; Tian, Li2; Shao, Changliang4,5
刊名ECOLOGICAL INDICATORS
出版日期2021-11-01
卷号131页码:11
关键词Ecosystem carbon flux Eddy-covariance Grassland Mongolian Plateau Small size precipitation
ISSN号1470-160X
DOI10.1016/j.ecolind.2021.108242
通讯作者Tian, Li(tianli@igsnrr.ac.cn) ; Shao, Changliang(shaochangliang@caas.cn)
英文摘要Different sizes of precipitation are specifically essential in controlling plant physiological processes in ecosystems and extremely important for predicting the effects of precipitation on arid and semiarid region carbon cycle. However, the sizes of precipitation events and their role in carbon flux processes remain unclear. A consecutive three years (2014-2016) eddy covariance flux measurements were conducted to investigate the changes in carbon fluxes under different sizes of precipitation in Mongolia - typical steppe (TPL), meadow steppe (MDW) and shrubland (SHB). Most of the precipitation distributions were dominated by small size events over all sites of the study area. Gross primary productivity reached highest on days with 2 mm d-1 and 5 mm d-1 of precipitation in 2015 and 2014, respectively in TPL, whereas the highest gross primary productivity observed at 10-25 mm d-1 precipitation size in both MDW and SHB. The ecosystem respiration changed positively with different sizes of precipitation events, except for the 5 mm d-1 and 10 mm d-1 precipitation size in the study sites. There existed positive relationship between net ecosystem CO2 exchange (NEE) and small size precipitation event in both TPL and MDW. The slight association was detected between NEE and small size precipitation (<2 mm) events in SHB during the study years. By contrast, the strong relationship was observed between large precipitation sizes and NEE (p < 0.01) in SHB. Overall, this study highlights the different responses of carbon flux to changes in the event size distribution of precipitation in grassland ecosystems which may help to predict how grassland structure and characteristic will respond to climatic change.
WOS关键词RAINFALL EVENTS ; INNER-MONGOLIA ; EXTREME PRECIPITATION ; SEMIARID GRASSLAND ; SOIL CARBON ; ECOSYSTEM ; WATER ; FLUXES ; PULSE ; VARIABILITY
资助项目Major State Research Development Program of China[2017YFA0604801] ; Natural Science Foundation of China[31870466] ; Natural Science Foundation of China[41771205] ; LCLUC Program of NASA[80NSSC20K0410] ; Basic Frontier Science Research Program of the Chinese Academy of Sciences Original innovation projects[ZDBS-LY-DQC023] ; US-China Carbon Consortium (USCCC) ; Foundation of President of the Zhongke-Ji'an Institute for Eco-Environmental Sciences[ZJIEES-2020-02]
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000704587500003
出版者ELSEVIER
资助机构Major State Research Development Program of China ; Natural Science Foundation of China ; LCLUC Program of NASA ; Basic Frontier Science Research Program of the Chinese Academy of Sciences Original innovation projects ; US-China Carbon Consortium (USCCC) ; Foundation of President of the Zhongke-Ji'an Institute for Eco-Environmental Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/166856]  
专题中国科学院地理科学与资源研究所
通讯作者Tian, Li; Shao, Changliang
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Qianyanzhou Ecol Res Stn, Beijing 100101, Peoples R China
3.Fujian Agr & Forestry Univ, Coll Forestry, Fuzhou 350002, Peoples R China
4.Chinese Acad Agr Sci, Natl Hulunber Grassland Ecosyst Observat & Res St, Beijing 100081, Peoples R China
5.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China
6.Shanxi Univ, Sch Life Sci, Taiyuan 030006, Peoples R China
7.Northeast Normal Univ, Key Lab Vegetat Ecol, Minist Educ, Changchun 130024, Peoples R China
8.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China
推荐引用方式
GB/T 7714		 Legesse, Tsegaye Gemechu,Dong, Gang,Jiang, Shicheng,et al. Small precipitation events enhance the Eurasian grassland carbon sink[J]. ECOLOGICAL INDICATORS,2021,131:11.
APA Legesse, Tsegaye Gemechu.,Dong, Gang.,Jiang, Shicheng.,Chen, Jingyan.,Dong, Xiaobing.,...&Shao, Changliang.(2021).Small precipitation events enhance the Eurasian grassland carbon sink.ECOLOGICAL INDICATORS,131,11.
MLA Legesse, Tsegaye Gemechu,et al."Small precipitation events enhance the Eurasian grassland carbon sink".ECOLOGICAL INDICATORS 131(2021):11.

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来源：地理科学与资源研究所

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