气候变化领域集成服务门户(CCPortal): Spatial and temporal pattern of precipitation and drought in Gansu Province, Northwest China

CCPortal

DOI	10.1007/s11069-008-9274-y
	Spatial and temporal pattern of precipitation and drought in Gansu Province, Northwest China
	Zhai, Luxin; Feng, Qi
发表日期	2009
ISSN	0921-030X
EISSN	1573-0840
起始页码	1
结束页码	24
卷号	49 期号:1
英文摘要	Drought is one of the most harmful natural hazards in Gansu Province in Northwest China. The changes of precipitation affect the severity of drought. In order to recognize the trend of precipitation and understand the effect of rainfall change on water resources management and drought severity, Mann-Kendall test was used. Standardized Precipitation Index (SPI) was calculated to reconstruct the drought at different time scales and analyze the frequency of drought occurrence in the recent 50 years. The results show that the SPI is applicable in Gansu Province. The number of severe droughts differs among regions: it is more obvious as a 3-month drought in the Yellow River Basin and the Yangtze River Basin than in the Inland River Basin, and other droughts at 6-, 9-, and 12-month time scales have the same effect in the three regions. Mann-Kendall test results show that there is an upward trend in the summer periods and a downward trend in the autumn-winter-spring intervals ranging from 10.5 mm/10 years to -37.4 mm/10 years, which affect the local water resources management, droughts mitigation, and agriculture decision making. This situation poses challenges for future study.
英文关键词	Trend of precipitation; Frequency of drought; Standardized Precipitation Index (SPI); Mann-Kendall; Gansu Province
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences ; Water Resources
WOS类目	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS关键词	INDEX ; TREND
WOS记录号	WOS:000263798800001
来源期刊	NATURAL HAZARDS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239389
作者单位	[Feng, Qi] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou, Peoples R China; [Zhai, Luxin; Feng, Qi] Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Zhai, Luxin,Feng, Qi. Spatial and temporal pattern of precipitation and drought in Gansu Province, Northwest China[J]. 中国科学院西北生态环境资源研究院,2009,49(1).
APA	Zhai, Luxin,&Feng, Qi.(2009).Spatial and temporal pattern of precipitation and drought in Gansu Province, Northwest China.NATURAL HAZARDS,49(1).
MLA	Zhai, Luxin,et al."Spatial and temporal pattern of precipitation and drought in Gansu Province, Northwest China".NATURAL HAZARDS 49.1(2009).