QQ客服 官方微博 反馈留言

	Temporal and Spatial Variability of Droughts in Southwest China from 1961 to 2012
	Huang Y. H.; Xu, C.; Yang, H. J.; Wang, J. H.; Jiang, D.; Zhao, C. P.
	2015
关键词	droughts Southwest China precipitation anomaly index drought frequency standardized precipitation index patterns station
英文摘要	Southwest China (SC) has suffered a series of super extreme droughts in the last decade. This study analyzed the temporal and spatial variations of drought in SC from 1961 to 2012. Based on precipitation anomaly index (PAI) that was derived from 1 km gridded precipitation data, three time scales (month, year and decade) for the drought frequency (DF) and drought area were applied to estimate the spatio-temporal structure of droughts. A time-series analysis showed that winter droughts and spring droughts occurred frequently for almost half of the year from November to March. Summer droughts occasionally occurred in severe drought decades: the 1960s, 1980s and 2000s. During the period of observation, the percent of drought area in SC increased from the 1960s (<5%) to the 2000s (>25%). A total of 57% of the area was affected by drought in 2011, when the area experienced its most severe drought both in terms of area and severity. The spatial analysis, which benefitted from the gridded data, detailed that all of SC is at drought risk except for the central Sichuan Basin. The area at high risk for severe and extreme droughts was localized in the mountains of the junction of Sichuan and Yunnan. The temporal and spatial variability can be prerequisites for drought resistance planning and drought risk management of SC.
出处	Sustainability
卷	7
期	10
页	13597-13609
收录类别	SCI
语种	英语
ISSN号	2071-1050
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/38662]
专题	资源利用与环境修复重点实验室_资源地理与国土资源研究室_SCI/SSCI期刊论文 中国科学院地理科学与资源研究所
推荐引用方式 GB/T 7714	Huang Y. H.,Xu, C.,Yang, H. J.,et al. Temporal and Spatial Variability of Droughts in Southwest China from 1961 to 2012. 2015.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

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。