干旱区生态环境知识资源中心(Arid): National-Scale Variation and Propagation Characteristics of Meteorological, Agricultural, and Hydrological Droughts in China

Arid

DOI	10.3390/rs12203407
	National-Scale Variation and Propagation Characteristics of Meteorological, Agricultural, and Hydrological Droughts in China
	Yao, Ning; Zhao, Huichao; Li, Yi; Biswas, Asim; Feng, Hao; Liu, Fenggui; Pulatov, Bakhtiyor
通讯作者	Li, Y
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2020
卷号	12 期号:20
英文摘要	The regional and national scales variation and propagation characteristics of different types of droughts are critical for improving drought resilience, while information is limited in China. The objective of this research was to investigate the evolution and propagation characteristics of three types of droughts using standardized indices at multi-timescales in different sub-regions of China. The indices included Standardized Precipitation/Soil Moisture/Runoff Index (SPI/SSI/SRI) using the optimal probability density function, representing meteorological, agricultural, and hydrological droughts based on precipitation, soil water storage, and baseflow-groundwater runoff, respectively. Wavelet analysis was used to reveal their periodical characteristics. Modified Mann-Kendall trend test was used to compare the trend among drought indices. Correlation coefficients between SPI and SSI/SRI were calculated to identify the time-lags of SPI with SSI and SRI. In general, droughts indicated by SPI agreed well with the historical drought events at different sub-regions. The main periods of SSI were closer to SPI than SRI, indicating stronger connections of agricultural drought with meteorological drought. A weaker connection between meteorological and agricultural/hydrological droughts at shorter timescales was observed in northwestern arid and semi-arid regions. The propagation from meteorological to agricultural or hydrological droughts were well denoted by the lagged time (months) from SPI to SSI or SRI at a timescale ranged from 0 (mostly located in south China) to 5 months (mostly located in northeastern China) for 1-, 3-, 6-, 12-, or 24-month timescale; this was a new finding for China. The methods of wavelet combining trend test and Pearson coefficient showed meaningful power for revealing the drought propagation characteristics and the obtained results can be a good reference for other regions of the world since this study compared different climate zones from arid to humid conditions. The study provides crucial information and guidance to develop drought management strategies at regional to national scale and their critical time of action.
英文关键词	drought type standardized drought index wavelet analysis trend lag
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000583009400001
WOS关键词	FREQUENCY-ANALYSIS ; MAINLAND CHINA ; CLIMATE-CHANGE ; TIME SCALES ; RIVER-BASIN ; VARIABILITY ; GRACE ; SUBREGIONS ; RESPONSES ; SEVERITY
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327169
作者单位	[Yao, Ning; Zhao, Huichao; Li, Yi] Northwest A&F Univ, Coll Water Resources & Architecture Engn, Yangling 712100, Shaanxi, Peoples R China; [Zhao, Huichao] Henan Prov Inst Commun Planning Survey & Design, Zhengzhou 450000, Peoples R China; [Li, Yi] Northwest Agr & Forestry Univ, Key Lab Agr Water & Soil Engn, Educ Minist, Yangling 712100, Shaanxi, Peoples R China; [Biswas, Asim] Univ Guelph, Sch Environm Sci, Guelph, ON N1G 2W1, Canada; [Feng, Hao] Chinese Acad Sci, Inst Water & Soil Conservat, Yangling 712100, Shaanxi, Peoples R China; [Feng, Hao] Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China; [Liu, Fenggui] Qinghai Normal Univ, Acad Plateau Sci & Sustainabil, Xining 810016, Peoples R China; [Pulatov, Bakhtiyor] Tashkent Inst Irrigat & Agr Mech Engineers, Qoriy Niyoziy 39, Tashkent 100000, Uzbekistan
推荐引用方式 GB/T 7714	Yao, Ning,Zhao, Huichao,Li, Yi,et al. National-Scale Variation and Propagation Characteristics of Meteorological, Agricultural, and Hydrological Droughts in China[J]. 西北农林科技大学,2020,12(20).
APA	Yao, Ning.,Zhao, Huichao.,Li, Yi.,Biswas, Asim.,Feng, Hao.,...&Pulatov, Bakhtiyor.(2020).National-Scale Variation and Propagation Characteristics of Meteorological, Agricultural, and Hydrological Droughts in China.REMOTE SENSING,12(20).
MLA	Yao, Ning,et al."National-Scale Variation and Propagation Characteristics of Meteorological, Agricultural, and Hydrological Droughts in China".REMOTE SENSING 12.20(2020).