内蒙古东部农牧交错带干旱风险评估与区划

发布时间：2018-02-11 05:32

本文关键词： 干旱风险评估与区划内蒙古自治区农牧交错带地理信息系统　出处：《内蒙古大学》2017年硕士论文　论文类型：学位论文

【摘要】：干旱灾害是内蒙古地区最频繁的自然灾害。本文选取内蒙古东部的农牧交错带作为研究区域,利用该区域的降水数据、遥感数据、土地利用数据、基础地理数据以及统计年鉴数据等,基于GIS和RS技术,以自然灾害理论为支撑,选取若干指标来研究该区域的致灾因子危险性、承载体易损性、孕灾环境敏感性和防灾减灾能力,并综合这四因子绘制了内蒙古东部农牧交错带农业干旱风险区划图和内蒙古东部农牧交错带牧业干旱风险区划图,最后分别对其进行聚类分析和结果验证。研究结果表明:内蒙古东部农牧交错带农业干旱风险值分布呈中部地区高、南北两端地区低,其中科尔沁右冀前旗属于最高农业干旱风险区。内蒙古东部农牧交错带草原牧区干旱风险呈北高南低分布,各个旗县草原牧区干旱灾害风险值差异较大,其中陈巴尔虎旗属于最高牧业干旱风险区。
[Abstract]:Drought disaster is the most frequent natural disaster in Inner Mongolia. In this paper, the agricultural and pastoral ecotone in the east of Inner Mongolia is selected as the study area, and the precipitation data, remote sensing data and land use data are used. Based on the basic geographic data and statistical yearbook data, based on GIS and RS technology, and based on the theory of natural disaster, some indexes are selected to study the risk of the disaster factors and the vulnerability of the bearing body in this area. The environmental sensitivity and disaster prevention and mitigation ability of the four factors were used to draw the agricultural drought risk zoning map of the eastern Inner Mongolia agricultural and pastoral ecotone and the eastern Inner Mongolia agricultural and pastoral ecotone. The results show that the agricultural drought risk distribution in eastern Inner Mongolia is high in the middle region and low in the north and south. Among them, Horqin right Hebei Qianqi Banner belongs to the highest agricultural drought risk area. The drought risk of grassland pastoral area in eastern Inner Mongolia is distributed as north high and south low, and the value of drought disaster risk in each flag county grassland pasturing area is different greatly. Among them Chen Barhu Banner belongs to the highest animal husbandry drought risk area.
【学位授予单位】：内蒙古大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S811.1

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