干旱区生态环境知识资源中心(Arid): 宁夏回族自治区干旱致灾危险性时空变化特征

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	宁夏回族自治区干旱致灾危险性时空变化特征
其他题名	Spatial-temporal Variation of Drought Hazard in Ningxia Hui Autonomous Region, China
	谭春萍; 杨建平; 杨圆; 陈虹举
来源期刊	灾害学
ISSN	1000-811X
出版年	2015
卷号	30 期号:2 页码:89-93
中文摘要	基于宁夏地区22个气象站1971-2011年月降水量和月平均气温资料,综合考虑降水和蒸发,引入标准化降水蒸散指数(SPEI),分析该地区气象干旱变化情况,并在此基础上通过构建SPEI值与干旱等级的加权综合评价模型,评估该地区干旱致灾危险性,剖析其时空变化特征。结果表明:宁夏地区气象干旱呈显著加重趋势,年均SPEI值1972-2011年以0.37·(10a)~(-1)的速率显著减小;该地区气象干旱呈现自南向北逐渐加重的空间分布格局,且干旱加重速度呈现由中部干旱带向南北分别递增的空间变化特征。1972-2011年,宁夏地区干旱致灾危险性呈显著增大趋势,干旱致灾危险性指数近40年减小速率为0.12·(10a)~(-1);该地区干旱致灾危险性在空间分布上表现为北部引黄灌区高于中南部地区,且危险性的增速呈现中部较缓、南北较快的空间变化特征。
英文摘要	Based on the monthly precipitation and monthly mean air temperature of 22 meteorological stations from 1971 to 2011 in Ningxia,the Standardized Precipitation Evapotranspiration Index (SPEI) is used to analyze the spatial and temporal evolutions of the meteorological drought,and the drought hazard is evaluated by the weighted comprehensive evaluation model involved SPEI value and drought grade. The results show that the drought displayed a significant aggravation tendency in Ningxia from 1972 to 2011,with a rate of annual SPEI decrease by 0.37·(10a) ~(-1). In Ningxia,the drought spatially showed an increasing trend from the south to the north,and the drought aggravation speed had a particular spatial pattern,increased northward and southward from the Central arid zone. The drought hazard showed a significant increasing trend during 1972 - 2011,with a rate of annual drought hazard index decrease by 0.12·(10a) ~(-1). The drought hazard in the Yellow river irrigation area was higher than that in the Central arid zone and the Southern mountain region,and the increasing speed of drought hazard also increased northward and southward from the Central arid zone.
中文关键词	干旱 ; 致灾危险性 ; 时空变化 ; 标准化降水蒸散指数(SPEI) ; 综合评价模型 ; Mann-Kendall趋势法 ; 宁夏
英文关键词	drought disaster risk temporal and spatial variation the Standardized Precipitation Evapotranspiration Index (SPEI) comprehensive evaluation model Mann-Kendall trend method Ningxia
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5415336
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233602
作者单位	中国科学院寒区旱区环境与工程研究所, 冰冻圈科学国家重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	谭春萍,杨建平,杨圆,等. 宁夏回族自治区干旱致灾危险性时空变化特征[J]. 中国科学院西北生态环境资源研究院,2015,30(2):89-93.
APA	谭春萍,杨建平,杨圆,&陈虹举.(2015).宁夏回族自治区干旱致灾危险性时空变化特征.灾害学,30(2),89-93.
MLA	谭春萍,et al."宁夏回族自治区干旱致灾危险性时空变化特征".灾害学 30.2(2015):89-93.