摘要
文章将模糊综合评判方法应用于莆田市的滑坡敏感性填图工作,并进行验证。利用莆田市滑坡现状图,得出导致滑坡灾害发生的5个影响因子,采用这些影响因子和识别出的滑坡,计算各个滑坡灾害影响因子的模糊隶属度;之后,应用各影响因子的模糊隶属度,得出各个单元的模糊隶属度,并以此来绘制滑坡敏感图,将研究区划分为高度敏感区、较高敏感区、一般敏感区、不敏感区;最后,将成果图与现有的滑坡进行比较,来计算预测精度。结果表明:当gamma算子λ=0.750时,精度最高,并且填图结果与实际情况较为吻合;而当gamma算子λ=0.975和λ=0.025时,吻合情况相对较差。
The purpose of this paper is to study the sensitivity mapping of putian landslide area and verify with fuzzy comprehensive evaluation method.Through using the landslide maps of putian city,five impactive factors are found,and the fuzzy memberships of various impactive factors of landslide hazard are calculated by using those impactive factors and the landslides recognized;And then,fuzzy memberships of all units are drawn by using the fuzzy memberships of every impactive factors.Through using fuzzy memberships of all units,putian city can be divided into highly sensitive areas,high-sensitive areas,sensitive areas in general,non-sensitive areas;At last,the outcome map with the actual landslides are compared to calculate accuracy of prediction.The results show that it is in the highest accuracy and the results are more in line with the actual situation when the gamma operator λ =0.750,and when the gamma operator λ=0.975 or λ =0.025,the results are relatively less in line with the actual situation.
出处
《荆楚理工学院学报》
2011年第2期38-41,75,共5页
Journal of Jingchu University of Technology
基金
福建省科技厅基金项目(项目编号:2006F3111)
关键词
滑坡
敏感性
填图
模糊综合评判方法
莆田市
landslide
sensitivity
mapping
fuzzy comprehensive evaluation
Putian city
