摘要
运用层次分析法结合GIS软件,建立基于下垫面孕灾环境因子的锡林郭勒地区沙尘暴风险评价指标体系,评价锡林郭勒地区3个时间段(1981—1990,1991—2000,2001—2010)的沙尘暴风险。结果表明:30年间锡林郭勒地区沙尘暴风险呈增加趋势,且西部地区高于东部地区。
Xilingol region is one of the major typical steppes and a major ecological barrier around Beijing, however it is located in an ecologically fragile area. Using AHP and GIS technology, An assessment system of sandstorm risk was established based on the underlying surfaces factors. This article analyzed sandstorm risk assessment during the three periods (1981-1990, 1991-2000, 2001-2010) in the Xilingol region. The assessment result showed that the risk greatly changed during the recent 30 years. The risk had a gradually increasing trend and the risk in the western was higher than thatin the eastern at the same period.
出处
《林业科学》
CAS
CSCD
北大核心
2012年第9期1-7,共7页
Scientia Silvae Sinicae
基金
引进国际先进林业科学技术(2009-4-42)
内蒙古自然科学基金项目(2010MS0614)
关键词
沙尘暴
下垫面
孕灾环境
风险评价
锡林郭勒
sand storm
underlying surface
hazard-formative environment
risk assessment
Xilingol region