Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD027817 |
Global Analysis of Ecosystem Evapotranspiration Response to Precipitation Deficits | |
He, Bin1; Wang, Haiyan1; Guo, Lanlan2; Liu, Junjie1 | |
2017-12-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:24 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Changes in ecosystem evapotranspiration (ET) due to precipitation deficits (PD) can relieve or aggravate soil moisture shortages, thus impacting drought severity. Previous findings have conflicted with regard to response of ET to PD. The present study relies on a global land ET synthesis data set (ETsyn) and observations from eddy-covariance towers (ETobs) to thoroughly examine the sensitivity of ET to PD, which is represented by the standardized precipitation index. There was a contrast in the response to PD between arid and humid ecosystems. ETsyn of arid ecosystems was typically reduced promptly in response to a reduction of precipitation, while ETsyn in humid ecosystems experienced a two-staged change: First, there was an enhancement, and then a reduction associated with persisting PD. Compared with ETsyn, ETobs suggests the occurrence of a more significant ET transition in response to PD. In arid ecosystems, ET typically negatively correlated with low PD, but this was limited by a large PD. Findings from this study are crucial for understanding the role of ET in drought evolution. |
英文关键词 | transition evapotranspiration precipitation deficits SPI |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000419950200016 |
WOS关键词 | SOIL-MOISTURE ; WATER-BALANCE ; DROUGHT ; EVAPORATION ; CLIMATE ; TRENDS ; SCALE ; INDEX ; VARIABILITY ; GRASSLAND |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/33150 |
专题 | 气候变化 |
作者单位 | 1.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing, Peoples R China; 2.Beijing Normal Univ, Acad Disaster Reduct & Emergency Management, Sch Geog, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | He, Bin,Wang, Haiyan,Guo, Lanlan,et al. Global Analysis of Ecosystem Evapotranspiration Response to Precipitation Deficits[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(24). |
APA | He, Bin,Wang, Haiyan,Guo, Lanlan,&Liu, Junjie.(2017).Global Analysis of Ecosystem Evapotranspiration Response to Precipitation Deficits.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(24). |
MLA | He, Bin,et al."Global Analysis of Ecosystem Evapotranspiration Response to Precipitation Deficits".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.24(2017). |
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