Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020JD032371 |
Global Response of Evapotranspiration Ratio to Climate Conditions and Watershed Characteristics in a Changing Environment | |
Liu, Zhiyong1,2; Cheng, Linyin3; Zhou, Guoyi4; Chen, Xiaohong1,2; Lin, Kairong1,2; Zhang, Wenfeng5; Chen, Xiuzhi6; Zhou, Ping7 | |
2020-04-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2020 |
卷号 | 125期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Understanding the complex relationship between evapotranspiration and climate conditions and land surface characteristics is important within the context of global warming and increasing anthropogenic stressors. Based on the Budyko theory, we derived general frameworks for describing how the evapotranspiration ratio (actual evapotranspiration/precipitation, AET/P) responds to changes in the aridity index (potential evapotranspiration/precipitation, PET/P) and watershed characteristics (m). The frameworks show that the sensitivity of AET/P to PET/P decreases with increasing aridity but such decreasing pattern also depends on different watershed characteristics. The sensitivity coefficient tends to be greater in the energy-limited regimes (above 0.3) than in the water-limited regimes. The slope of the sensitivity curve becomes steeper for larger m values (e.g., m > 2). In addition, the sensitivity of the AET/P to m shows an asymmetrical unimodal curve, while the strongest sensitivity (inflection point) of evapotranspiration ratio to m occurs at PET/P > 1. We further examined spatial patterns of these sensitivities and the relative roles of PET/P (RCPET/P) and m (RCm) to AET/P over 91 hydrological basins worldwide. The tropical humid basins present the strongest sensitivity of AET/P to PET/P, while higher sensitivity coefficients of AET/P to m can be found in very cold basins. The changes in the sensitivity of evapotranspiration ratio to PET/P and m between 1930-1970 and 1971-2008 were assessed for these basins across broad climatic gradients. Most of these basins show a positive change in RCPET/P but a negative shift in RCm in the warming world. |
英文关键词 | hydrological response evapotranspiration watershed characteristics aridity index relative contribution |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000526643500006 |
WOS关键词 | MEAN ANNUAL EVAPOTRANSPIRATION ; SURFACE-ENERGY BALANCE ; REGIONAL EVAPOTRANSPIRATION ; INTERANNUAL VARIABILITY ; POTENTIAL EVAPORATION ; VEGETATION CHANGES ; LAND-COVER ; PRECIPITATION ; TRENDS ; IMPACT |
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/280176 |
专题 | 气候变化 |
作者单位 | 1.Sun Yat Sen Univ, Sch Civil Engn, Ctr Water Resources & Environm, Guangzhou, Peoples R China; 2.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China; 3.Univ Arkansas, Dept Geosci, Fayetteville, AR 72701 USA; 4.Nanjing Univ Informat Sci & Technol, Coll Appl Ecol, Nanjing, Peoples R China; 5.Zhongkai Univ Agr & Engn, Fac Automat, Guangzhou, Peoples R China; 6.Sun Yat Sen Univ, Sch Atmospher Sci, Guangzhou, Peoples R China; 7.Guangdong Acad Sci, Guangzhou Inst Geog, Guangdong Open Lib Geospatial Informat Technol &, Guangzhou, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Zhiyong,Cheng, Linyin,Zhou, Guoyi,et al. Global Response of Evapotranspiration Ratio to Climate Conditions and Watershed Characteristics in a Changing Environment[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(7). |
APA | Liu, Zhiyong.,Cheng, Linyin.,Zhou, Guoyi.,Chen, Xiaohong.,Lin, Kairong.,...&Zhou, Ping.(2020).Global Response of Evapotranspiration Ratio to Climate Conditions and Watershed Characteristics in a Changing Environment.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(7). |
MLA | Liu, Zhiyong,et al."Global Response of Evapotranspiration Ratio to Climate Conditions and Watershed Characteristics in a Changing Environment".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.7(2020). |
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