Nonlinear changes in aridity due to precipitation and evapotranspiration in China from 1961 to 2015
文献类型：期刊论文
| 作者 | Yin, Yunhe1; Ma, Danyang1,2; Wu, Shaohong1,2 |
| 刊名 | CLIMATE RESEARCH
 |
| 出版日期 | 2018 |
| 卷号 | 74期号:3页码:263-281 |
| 关键词 | Aridity Precipitation Reference evapotranspiration Nonlinear Climate change Ensemble empirical mode decomposition EEMD |
| ISSN号 | 0936-577X |
| DOI | 10.3354/cr01500 |
| 通讯作者 | Yin, Yunhe(yinyh@igsnrr.ac.cn) |
| 英文摘要 | Changes in regional aridity have complicated spatio-temporal features during the past several decades and have important implications for hydrologic cycles under global climate change. However, nonlinear changes in aridity and its spatial variability in China remain poorly understood. Here, we analyzed the spatial-temporal changes in hydroclimatic variables, including reference evapotranspiration (ETo), precipitation (P), aridity index (AI) and their relationships, mainly based on the ensemble empirical mode decomposition method. A climate dataset from 573 meteorological stations in China was used for the period 1961-2015. The results show that the nonlinearity of changes in aridity was complex, with distinct spatial differences. Approximately 76.09% of stations showed reversed trends in AI during 1961-2015, among which AI initially decreased and then increased, mainly in Inner Mongolia and the areas south of the middle and lower reaches of the Yangtze River. However, their reversal times were not synchronous. The drying to wetting transition mainly occurred in northern areas, including the southern part of Northeast China, the eastern Loess Plateau and the southern North China Plain. Although the majority of stations experienced reversals from downward to upward trends of ETo (53.92%) mainly around the 1990s, increasing precipitation exerted a larger effect on AI. For most eco-geographical regions in China, the nonlinear variations in ETo and P jointly led to the decline in AI over the past 55 yr, and the P trend contributed more than the ETo trend to the change in AI, except in subtropical regions, where ETo variations played a key role. |
| WOS关键词 | EMPIRICAL MODE DECOMPOSITION ; REFERENCE CROP EVAPOTRANSPIRATION ; SURFACE WIND SPEEDS ; WATER-LIMITED BASIN ; CLIMATE-CHANGE ; TIBETAN PLATEAU ; POTENTIAL EVAPOTRANSPIRATION ; GLOBAL DRYLANDS ; LOESS PLATEAU ; UNITED-STATES |
| 资助项目 | National Natural Science Foundation of China[41571043] ; Key Program of the National Natural Science Foundation of China[41530749] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA05090304] ; Cultivate Project of the Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences[TSYJS03] |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000428114400006 |
| 出版者 | INTER-RESEARCH |
| 资助机构 | National Natural Science Foundation of China ; Key Program of the National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Cultivate Project of the Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/57190]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Yin, Yunhe |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yin, Yunhe,Ma, Danyang,Wu, Shaohong. Nonlinear changes in aridity due to precipitation and evapotranspiration in China from 1961 to 2015[J]. CLIMATE RESEARCH,2018,74(3):263-281. |
| APA | Yin, Yunhe,Ma, Danyang,&Wu, Shaohong.(2018).Nonlinear changes in aridity due to precipitation and evapotranspiration in China from 1961 to 2015.CLIMATE RESEARCH,74(3),263-281. |
| MLA | Yin, Yunhe,et al."Nonlinear changes in aridity due to precipitation and evapotranspiration in China from 1961 to 2015".CLIMATE RESEARCH 74.3(2018):263-281. |
入库方式： OAI收割
来源：地理科学与资源研究所
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