spatiotemporalvariationofthewetdryconditionsfrom1961to2015inchina
文献类型：期刊论文
| 作者 | Yuan Quanzhi1; Wu Shaohong2 ; Dai Erfu2; Zhao Dongsheng2; Zhang Xueru3; Ren Ping1
|
| 刊名 | sciencechinaearthsciences
 |
| 出版日期 | 2017 |
| 卷号 | 60期号:11页码:2041 |
| ISSN号 | 1674-7313 |
| 英文摘要 | As an important part of the regional environment, the wet-dry climate condition is determined by precipitation and potential evapotranspiration (expressed as ET (o)). Based on weather station data, this study first calculated ET (o) by using the FAO56 Penman-Monteith model. Then, the dryness index K (ratio of ET (o) to precipitation) was used to study the spatio-temporal variation of the wet-dry condition in China from 1961 to 2015; moreover, dominant climatic factors of the wet-dry condition change were discussed. The annual precipitation and ET (o) of the Qinling-Huaihe line were close to a balance (K approximate to 1.0). The annual precipitation in most areas exceeded the ET (o) in the south of this line and the east of Hengduan Mountains (K = 4.0). The overall annual K of China fluctuated around the 55-year mean and its linear trend was not significant. However, a relatively wet period of about 10 yr (1987-1996) was recorded. The overall annual K of China showed strong cyclicality on the time scale of 3, 7-8, 11 and 26-28 yr, and regional differences of the annual K trends and cyclicality were large. The degrees of wetness in the Northwest China and western Qinghai-Tibet Plateau were substantially increased, whereas the degrees of dryness in the Yunnan-Guizhou Plateau, Sichuan Basin, and Loess Plateau were markedly increased. The linear trend of the annual K in most regions of China was not significant, and the annual K of most areas in China showed strong cyclicality on the 8-14 yr time scale. Precipitation was the dominant factor of wet-dry condition change in most areas, especially in North China, where the annual K change was highly correlated with precipitation. |
| 资助项目 | [Key Projects of National Natural Science Foundation of China] ; [Youth Projects of National Natural Science Foundation of China] ; [Science and Technology Project of Sichuan Provincial Department of Education] |
| 语种 | 英语 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/123218]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 作者单位 | 1.四川师范大学 2.中国科学院地理科学与资源研究所 3.重庆交通大学 |
| 推荐引用方式 GB/T 7714 | Yuan Quanzhi,Wu Shaohong,Dai Erfu,et al. spatiotemporalvariationofthewetdryconditionsfrom1961to2015inchina[J]. sciencechinaearthsciences,2017,60(11):2041. |
| APA | Yuan Quanzhi,Wu Shaohong,Dai Erfu,Zhao Dongsheng,Zhang Xueru,&Ren Ping.(2017).spatiotemporalvariationofthewetdryconditionsfrom1961to2015inchina.sciencechinaearthsciences,60(11),2041. |
| MLA | Yuan Quanzhi,et al."spatiotemporalvariationofthewetdryconditionsfrom1961to2015inchina".sciencechinaearthsciences 60.11(2017):2041. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。