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	基于标准化降水指数的锡林郭勒盟干旱特征分析
其他题名	Analysis of drought characteristics in Xilingol League based on standardized precipitation index
	张巧凤 1; 刘桂香 2; 于红博 3; 包玉海 3
来源期刊	自然灾害学报
ISSN	1004-4574
出版年	2015
卷号	24 期号:5 页码:119-128
中文摘要	在全球气候变暖的大背景下,锡林郭勒盟干旱灾害频发,给农牧业生产和人民生活等造成了严重的影响和损失,分析其干旱的时空特征和规律,能为防灾减灾提供借鉴。基于全盟15个气象站点1960 - 2013年的逐月降水资料,计算了12个月和3个月尺度的标准化降水指数,分析了年度和季节干旱演变规律,并应用主成份分析和空间插值方法分析了干旱的空间特征。结果表明:(1)锡林郭勒盟的年度与季节的干旱均较为频繁且持续时间较长,各尺度干旱频率均为30% 左右,干旱等级主要为轻旱和中旱,重旱和特旱频率较低;年度与夏季干旱站次比和干旱强度呈增加和增强趋势,春季、秋季和冬季的干旱站次比和干旱强度呈减少和减轻趋势。(2)前4个特征向量的空间分布与锡林郭勒盟4大类植被覆盖区域基本一致,即农牧交错区、荒漠草原区、典型草原区和草甸草原区,4个区域的干旱时段存在很强的一致性,且均存在干旱化趋势,干旱强度为荒漠草原区> 典型草原区>农牧交错区> 草甸草原区,4个区域的干旱频率和干旱站次比基本一致。
英文摘要	In the background of global warming,drought disasters happened frequently in Xilingol League,which caused serious impact and losses of the agricultural and livestock production and human life. Analyzing the spatiotemporal characteristics of the drought can provide a reference for disaster prevention and mitigation. Based on the monthly precipitation data of 15 meteorological stations in the whole league from 1960 - 2013,the standardized precipitation indices of 12 months and 3 months scales were calculated,the drought evolution laws in yearly and seasonal scales were analyzed,and the spatial characteristics of regional drought was also analyzed with principal component analysis and spatial interpolation methods. Conclusions include:(1) the yearly and seasonal drought of the league are getting more frequent and tend to last longer,with drought frequency of each scale being about 30%, and the drought being mainly in light and middle levels,heavy drought and serious drought frequency being lower. Summer and yearly drought station ratio and drought intensity show a trend of increase and aggravation,while spring,autumn and winter drought have trends of reduction and mitigation. (2) The spatial distribution of first four eigenvalue vectors is mainly consistent with the four kinds of vegetation cover regions of Xilingol League,namely the farming - pastoral zone,desert steppe zone,typical steppe zone and meadow steppe zone. Four regional drought periods are strongly consistent,all having the drought trends,drought intensity sequencing being desert steppe zone > typical steppe zone > farming - pastoral zone > meadow steppe zone. Drought frequency and drought station ratio of four regions are almost unanimous.
中文关键词	锡林郭勒盟 ; 标准化降水指数(SPI) ; 干旱 ; 评估指标 ; 时空特征
英文关键词	Xilingol League standardized precipitation index drought evaluation index temporal and spatial characteristics
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:5569433
来源机构	中国农业科学院草原研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233869
作者单位	1.中国农业科学院草原研究所, 内蒙古自治区遥感与地理信息系统重点实验室, 呼和浩特, 内蒙古 010010, 中国; 2.中国农业科学院草原研究所, 呼和浩特, 内蒙古 010010, 中国; 3.内蒙古师范大学地理科学学院, 内蒙古自治区遥感与地理信息系统重点实验室, 呼和浩特, 内蒙古 010022, 中国
推荐引用方式 GB/T 7714	张巧凤,刘桂香,于红博,等. 基于标准化降水指数的锡林郭勒盟干旱特征分析[J]. 中国农业科学院草原研究所,2015,24(5):119-128.
APA	张巧凤,刘桂香,于红博,&包玉海.(2015).基于标准化降水指数的锡林郭勒盟干旱特征分析.自然灾害学报,24(5),119-128.
MLA	张巧凤,et al."基于标准化降水指数的锡林郭勒盟干旱特征分析".自然灾害学报 24.5(2015):119-128.