重庆市自然灾害综合区划研究

发布时间：2018-01-17 23:20

本文关键词：重庆市自然灾害综合区划研究　出处：《灾害学》2017年01期 　论文类型：期刊论文

【摘要】：利用重庆市各区县自然灾害资料,采用Arc GIS空间分析方法得到单灾种自然灾害分布图,进行图层叠加,采用"自下而上"的方法进行图斑合并,并结合重庆市地貌格局对自然灾害区域界线进行调整得到重庆市自然灾害综合区划图,将重庆市划分为渝东北部和渝东南部中山低山自然灾害区、渝中部和西部丘陵低山自然灾害区等两个一级区,进而按照自然灾害区域分异与组合,划分6个二级自然灾害区。重庆市自然灾害综合区划研究可为重庆市的区域防灾减灾提供科学依据。
[Abstract]:Using the natural disaster data of every district and county in Chongqing, the distribution map of single natural disaster is obtained by using Arc GIS spatial analysis method, the map layer is superimposed, and the map spot is merged by "bottom-up" method. Combined with the geomorphological pattern of Chongqing to adjust the regional boundaries of natural disasters, the comprehensive map of natural disasters in Chongqing was obtained, and Chongqing was divided into the northeast of Chongqing and the low-mountain natural disaster area of Zhongshan in the southeast of Chongqing. In the middle of Chongqing and in the west of Chongqing, there are two first-order regions, such as the natural disaster areas of the hills and the low mountains, and then according to the regional differentiation and combination of natural disasters. The comprehensive regionalization of natural disasters in Chongqing can provide scientific basis for regional disaster prevention and mitigation in Chongqing.
【作者单位】：西南大学地理科学学院;西南大学三峡库区生态环境教育部重点实验室;
【基金】：国家自然科学基金(41372177)
【分类号】：X43
【正文快照】： doi:10.3969/j.issn.1000-811X.2017.01.034区域自然灾害是地球表层系统中的“自然-社会”综合体,它由区域孕灾环境、致灾因子与承灾体共同组成的结构系统,其系统功能由孕灾环境敏感性、致灾因子危险性和承灾体的脆弱性共同构成[1]。区域自然灾害在空间分布上具有由量变逐渐过

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