Spatial and temporal variation of drought index in a typical steep alpine terrain in Hengduan Mountains
文献类型：期刊论文
| 作者 | ZHU Guo-feng; YANG Ling; QIN Da-he; TONG Hua-li; LIU Yuan-feng; LI Jia-fang |
| 刊名 | Journal of Mountain Science
 |
| 出版日期 | 2016-07 |
| 卷号 | 13期号:7页码:1186-1199 |
| 关键词 | Drought index Normalized Difference Vegetation Index Evapotranspiration Thin plate smoothing splines Hengduan Mountains |
| ISSN号 | 1672-6316 |
| 通讯作者 | ZHU Guo-feng |
| 英文摘要 | This study describes the spatial and temporal variation of a drought index and makes inferences regarding the environmental factors that influence this variability in the Hengduan Mountains. A drought index is typically used to determine the moisture conditions and the magnitude of water deficiency in a given area. Based on data from 26 meteorological stations over the period 1960-2012, the spatial and temporal variations of the drought index were analyzed using a thin plate smoothing splines method that considered elevation as a covariate. The drought index was estimated based on the potential evapotranspiration (E0) as defined by the Penman Monteith model modified by FAO (1998). The results of the reported analysis showed that the drought index in the Hengduan Mountains has been decreasing since 1960 at a rate of -0.008/a. This represented a progressive shift from the "sub-humid" class, which typified the wider area in the Hengduan Mountains, toward the "humid" class, which appeared in the Hengduan Mountains areas. The drought index was relatively high in the north and low in the south and the variation of the drought index varied with seasons. The drought index showed increasing trends in summer and autumn and it is greater in autumn than in summer, while it showed a decreasing trend in spring and winter. Drought index is inversely proportional to the soil relative humidity and Normalized Difference Vegetation Index (NDVI). |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/17258]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2016_Vol13 No.7 |
| 推荐引用方式 GB/T 7714 | ZHU Guo-feng,YANG Ling,QIN Da-he,et al. Spatial and temporal variation of drought index in a typical steep alpine terrain in Hengduan Mountains[J]. Journal of Mountain Science,2016,13(7):1186-1199. |
| APA | ZHU Guo-feng,YANG Ling,QIN Da-he,TONG Hua-li,LIU Yuan-feng,&LI Jia-fang.(2016).Spatial and temporal variation of drought index in a typical steep alpine terrain in Hengduan Mountains.Journal of Mountain Science,13(7),1186-1199. |
| MLA | ZHU Guo-feng,et al."Spatial and temporal variation of drought index in a typical steep alpine terrain in Hengduan Mountains".Journal of Mountain Science 13.7(2016):1186-1199. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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