Rapid increase of potential evapotranspiration weakens the effect of precipitation on aridity in global drylands
文献类型：期刊论文
| 作者 | Pan, Ning; Wang, Shuai; Liu, Yanxu; Li, Yan ; Xue, Feng; Wei, Fangli; Yu, Haipeng; Fu, Bojie
|
| 刊名 | JOURNAL OF ARID ENVIRONMENTS
 |
| 出版日期 | 2021-03 |
| 卷号 | 186页码:- |
| 关键词 | Aridity index Dryland Climate reversal Temporal contribution Potential evapotranspiration |
| ISSN号 | 0140-1963 |
| 英文摘要 | Drylands are of great significance on terrestrial ecosystems and economic development, while being sensitive to climate changes and human activities. How global drylands extent and climate changed is not clear, and the dominant factor is the dispute over enhanced air evaporative demand and insufficient precipitation. This study attempted to fill this gap by exploring the trends in dryland areas, aridity index (AI), precipitation (P), and potential evapotranspiration (PET), and quantifying the temporal contributions of P and PET to AI. The results showed that the total dryland area shrunk 0.71 x 10(6) km(2) during 1901-2017 with reversed trend of shrinking to expanding. Precipitation dominates aridity in 88% of drylands, except for some regions in Europe and East Asia. With global warming, the relative contribution of PET to aridity in drylands increased significantly with a rate of 0.07% per year. The effect of PET exceeded that of P in 1966, which was the reason for the trend reversals of average AI. |
| WOS研究方向 | Ecology ; Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45548]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou, Peoples R Chin 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 3.Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, 19 XinJieKouWai St, Beijing 100875, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pan, Ning,Wang, Shuai,Liu, Yanxu,et al. Rapid increase of potential evapotranspiration weakens the effect of precipitation on aridity in global drylands[J]. JOURNAL OF ARID ENVIRONMENTS,2021,186:-. |
| APA | Pan, Ning.,Wang, Shuai.,Liu, Yanxu.,Li, Yan.,Xue, Feng.,...&Fu, Bojie.(2021).Rapid increase of potential evapotranspiration weakens the effect of precipitation on aridity in global drylands.JOURNAL OF ARID ENVIRONMENTS,186,-. |
| MLA | Pan, Ning,et al."Rapid increase of potential evapotranspiration weakens the effect of precipitation on aridity in global drylands".JOURNAL OF ARID ENVIRONMENTS 186(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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