摘要
根据陕甘宁地区35年来(1971-2005),39个测站的气象资料,运用线性回归法,聚类分析法,5年滑动平均法等方法,利用地理信息系统ARCGIS软件,分析该地区的气候变化趋势,比较该地区39个县的气候变化空间结构特点以及致灾效应。结果表明:陕甘宁地区暖干化趋势明显;全区有6个增温中心(定边靖边,神木,正宁,西峰,延安和同心)和4个干旱中心(延长宜川,甘泉富县,吴堡,和子长);气候变化导致该地区原本恶化的生态环境更加恶劣,灾害出现的频率增加,持续的时间延长,强度增大,最后导致人们的生活更加的贫困。
According to climate date of 39 stations in Shaanxi -Gansu -Ningxia region during 1971 -2005, using linear regression, cluster analysis, the five - year moving average as well as the ARCGIS programe of GIS and so on, the region＇s climate change trends , the comparison in 39 counties, as well as the spatial structure characteristics of the climate change and its hazard effects were analyzed. The results showed that： Shaanxi - Gansu - Ningxia region had a trend of warming and drying obviously, the temperature was rising while the rainfall was declining. There were six warming centers （ Dingbian, Shenmu, Zhengning, Xifeng, Yan＇an, and Tongxin ） and four drought centers（ Yanchuan, Ganquan, Wubao, and Zichang）. The climate change in the region led to the deterioration of the ecological environment even worse, an increasing of disaster frequency and duration, which made the people more and more poverty.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2009年第9期67-71,共5页
Journal of Arid Land Resources and Environment
基金
教育部哲学社会科学研究重大课题攻关项目"西部经济发展与生态环境重建研究"(04JZD00010)
教育部人文社会科学重点研究基地重大研究项目"陕甘宁老区生态脱贫途径研究"(05jjd770013)资助
关键词
陕甘宁地区
气候变化
空间结构
致灾效应
Shaanxi -Gansu -Ningxia region
climate change
spatial structure
hazard effect
