Spatiotemporal variability and assessment of drought in the Wei River basin of China

被引：7
|
作者：
Cai, Siyang [1 ,2 ]
Zuo, Depeng [1 ,2 ]
Xu, Zongxue [1 ,2 ]
Han, Xianming [1 ,2 ]
Gao, Xiaoxi [1 ,2 ]
机构：
[1] Beijing Normal Univ, Coll Water Sci, Beijing 100875, Peoples R China
[2] Beijing Key Lab Urban Hydrol Cycle & Sponge City, Beijing 100875, Peoples R China
来源：
INNOVATIVE WATER RESOURCES MANAGEMENT - UNDERSTANDING AND BALANCING INTERACTIONS BETWEEN HUMANKIND AND NATURE | 2018年 / 379卷
基金：
中国国家自然科学基金;
关键词：
PRECIPITATION INDEX SPI; UNITED-STATES; PROVINCE; CLIMATE;
D O I：
10.5194/piahs-379-73-2018
中图分类号：
TV21 [水资源调查与水利规划];
学科分类号：
081501 ;
摘要：
The temporal and spatial variations of drought in the Wei River basin (WRB) were investigated by calculating the meteorological drought Index (Standardized Precipitation Index, SPI) and the agricultural drought index (Vegetation Health Index, VHI). Monthly precipitation and air temperature were from 22 meteorological stations over the region from 1960 to 2015. Monthly Normalized Difference Vegetation Index (NDVI) and 8days Land Surface Temperature (LST) were provided from the National Aeronautics and Space Administration (NASA) for the period 2000-2015 were also adopted. The results showed that the drought initially increased and then decreased, reaching at the maximum value in 1990s. The spatial pattern of meteorological drought showed that the drought in northern WRB was heavier than that in southern WRB before 1990s, after that, the situation had the opposite. By comparing the agricultural drought index (VHI) with crop yield, it was proved that VHI was applicable in the WRB and could well reflect the fluctuation of agricultural drought. The WRB suffered from serious agricultural drought in 2000, 2001, 2007 and 2008. Through analysis of the historical precipitation and temperature data, it was found that precipitation had a greater contribution to creating agricultural drought conditions than temperature in the Wei River basin.
引用
收藏
页码：73 / 82
页数：10
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