内江市景观格局对地质灾害易发性的影响分析  

Analysis of the influence of landscape pattern on geological disaster susceptibility

作　　者：刘祥龙 张文君[1,2] 陈朝亮 任周鹏 邓云涛[1,2] LIU Xianglong;ZHANG Wenjun;CHEN Chaoliang;REN Zhoupeng;DENG Yuntao(Southwest University of Science and Technology,Mianyang,Sichuan 621010,China;Mianyang S&T City Division,National Remote Sensing Center of China,Mianyang,Sichuan 621010,China;Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China)

机构地区：[1]西南科技大学,四川绵阳621010 [2]国家遥感中心绵阳科技城分部,四川绵阳621010 [3]中国科学院地理科学与资源研究所,北京100101

出　　处：《测绘科学》2021年第5期118-125,共8页Science of Surveying and Mapping

摘　　要：为探讨地表土地景观格局对地质灾害易发性的影响,丰富地质灾害易发性评价体系,以内江市为研究区域,选取高程、坡度、降雨量、植被指数、地层岩性和距构造距离为评价指标,利用层次分析法进行地质灾害易发性评价,以乡镇为统计单元,运用空间滞后模型进行回归分析,定量地探讨了景观格局对地质灾害易发性的影响。结果表明:地质灾害易发性和平均斑块面积、景观蔓延度和香农多样性指数显著正相关。地质灾害易发性与部分景观格局指数存在显著的相关性,景观格局可以在一定程度上反映地质灾害易发性的空间分布,可以在今后的地质灾害评价中将景观格局作为评价指标进行考虑,同时也为实现生态保护和防灾减灾的综合治理提供科学参考。In order to explore the influence of surface landscape pattern on the geological disaster susceptibility and enrich the evaluation system of geological disaster susceptibility,this paper considered Neijiang City as study area,selected elevation,slope,rainfall,NDVI,lithology and the distance from geological structure as indicators of susceptibility,used analytic hierarchy process(AHP)to evaluate the susceptibility of geological disasters,and took each town as the statistical unit,used the spatial lag model for regression analysis,and quantitatively explored the impact of landscape pattern on geological disaster susceptibility.The results showed that geological disaster susceptibility was significantly positive correlated with MPS,CONTAG and SHDI.Accordingly,there is a significant correlation between the geological disaster susceptibility and some landscape pattern indices.Landscape pattern can reflect the spatial distribution of the geological disaster susceptibility to a certain extent,and could be considered as an evaluation index in future geological hazard assessment.Meanwhile,it also provides scientific basis for the comprehensive management of ecological protection and disaster prevention and reduction.

关 键 词：层次分析法 地质灾害易发性 景观格局 空间滞后模型 

分 类 号：P237[天文地球—摄影测量与遥感]