IEECAS OpenIR  > 生态环境研究室
Spatiotemporal analysis of multiscalar drought characteristics acrossthe Loess Plateau of China
Liu,ZP(Liu,Zhipeng)[1]; Wang,YQ(Wang,Yunqiang)[2]; Shao,MA(Shao,Mingan)[3]; Jia,XX(Jia,Xiaoxv)[3]; Li,XL(Li,Xuelin)[1]
2016
发表期刊Journal of Hydrology
卷号534页码:281-299
文章类型期刊论文
摘要

Drought is the most widespread and destructive hazard in arid and semiarid regions, with behaviors that become more complicated under climate change. To provide an overall view of drought conditions across the Loess Plateau of China, two multiscalar drought indices, the Standardized Precipitation Index (SPI) and the Standardized Precipitation Evapotranspiration Index (SPEI), were used to identify the regional spatiotemporal characteristics of drought conditions from 1957 to 2012. Climatic data from 54 meteorological stations across the region were used to calculate the SPI and SPEI time series at 1-, 3-, 6-, 12- and 24-month time scales. Subregions with independent drought characteristics and the corresponding representative meteorological stations were identified by principal component analysis to facilitate regional drought monitoring. A temporal trend of drought severity over a 12-month time scale, as detected by the Mann–Kendall test, was mapped for the entire region. The intensity of the increasing trend of drought severity based on the SPEI was weaker than that based on the SPI. The area with a significant increasing trend of drought severity based on the SPEI was only found in the southwest of the region and was much smaller than that based on the SPI. The temporal behavior of drought frequency from January to December differed over different time scales and levels of drought severity. The regional distributions of the drought frequency were mapped for different months. Generally, the drought frequency spatially decreased from southeast to northwest and was higher in the middle of the winter, late spring and early summer. While the drought-hit area also changed with time, it was generally within the central and northwest areas of the region. Drought behaviors identified by the SPI and SPEI also changed with different time scales. Clear differences were also found among the drought characteristics identified by SPI, SPEI and the self-calibrated Palmer Drought Severity Index. The SPEI is considered as a robust index for regional drought monitoring and analysis under global climate change scenarios because of its multiscalar nature, simple form, low data requirement, and ability to identify the effects of temperature on drought conditions.

关键词Drought severity Spatial variation Temporal trend Evapotranspiration Water resources
DOI10.1016/j.jhydrol.2016.01.003
收录类别SCI
语种英语
引用统计
被引频次:138[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/10838
专题生态环境研究室
作者单位1.College of Resources and Environmental Sciences, Nanjing Agricultural University, 1 Weigang, Nanjing 210095, PR China;
2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, Shaanxi 710075, PR China;
3.Key Laboratory of Ecosystem Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, PR China
推荐引用方式
GB/T 7714
Liu,ZP,Wang,YQ,Shao,MA,et al. Spatiotemporal analysis of multiscalar drought characteristics acrossthe Loess Plateau of China[J]. Journal of Hydrology,2016,534:281-299.
APA Liu,ZP,Wang,YQ,Shao,MA,Jia,XX,&Li,XL.(2016).Spatiotemporal analysis of multiscalar drought characteristics acrossthe Loess Plateau of China.Journal of Hydrology,534,281-299.
MLA Liu,ZP,et al."Spatiotemporal analysis of multiscalar drought characteristics acrossthe Loess Plateau of China".Journal of Hydrology 534(2016):281-299.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Spatiotemporal analy(8262KB)期刊论文作者接受稿开放获取CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Liu,ZP(Liu,Zhipeng)[1]]的文章
[Wang,YQ(Wang,Yunqiang)[2]]的文章
[Shao,MA(Shao,Mingan)[3]]的文章
百度学术
百度学术中相似的文章
[Liu,ZP(Liu,Zhipeng)[1]]的文章
[Wang,YQ(Wang,Yunqiang)[2]]的文章
[Shao,MA(Shao,Mingan)[3]]的文章
必应学术
必应学术中相似的文章
[Liu,ZP(Liu,Zhipeng)[1]]的文章
[Wang,YQ(Wang,Yunqiang)[2]]的文章
[Shao,MA(Shao,Mingan)[3]]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

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。