摘要
用自然灾害风险评价的理论和方法,建立了青海省雪灾风险度评价模型,选取雪灾相关的气象、畜牧和社会经济等多个因子,借助ArcGIS的空间分析,得到了风险各因子分布图层,再将各因子分布图层进行运算和分析,最后通过ArcGIS中的地理统计功能,形成了青海省雪灾风险区划图。研究结果表明,青海省雪灾风险高的地区主要集中在青南地区,其中以甘德、久治、称多、达日以及玉树、泽库的部分区域为最高;雪灾风险低的地区主要在柴达木盆地和东部农业区,其中以茫崖、循化、乐都、平安、尖扎等地为最低;其余地区处于风险等级从高到低的不同分区中。
Based on the theories and methods of natural disaster risk assessment,assessment model on risk degree of snow disaster for Qinghai Province was established in this study.The meteorological,economic and livestock＇s factors relating to the snow disaster were selected and their distribution maps were mapped by ArcGIS spatial analysis function,and then using geographic statistical functions of ArcGIS made the snowstorm risk zoning map of Qinghai Province.Present study showed that high risk areas of the snowstorm were mainly distributed in the south region of Qinghai Province,in which Gande,Jiuzhi,Chengduo,Dari and some regions of Yushu and Zeku County were the highest;the low risk areas of snowstorm were mainly distributed in Qaidam Basin and the eastern agricultural areas,in which Mangya,Xunhua,Ledu,Ping＇an,Jianza were the lowest;the others were in the different partition regions of risk from high to low level.
出处
《草业科学》
CAS
CSCD
北大核心
2010年第11期37-42,共6页
Pratacultural Science
关键词
青海高原
雪灾
GIS
风险区划
Qinghai Plateau
snow disaster
GIS
risk division
