基于GIS的临泽县土地生态适宜性评价  

Evaluation of Land Ecosystem Adaptability Based on GIS in Linze County

作　　者：王翠萍[1] 刘宝军[1] 孙景梅[1] 韩小红[1] 申建军[1] 

机构地区：[1]国家林业局西北林业调查规划设计院,西安710048

出　　处：《林业资源管理》2011年第2期78-82,共5页Forest Resources Management

摘　　要：以甘肃省临泽县为研究区域,运用GIS技术,在该县行政区划和自然地理条件基础上,划分土地评价单元,运用特尔菲法对预选评价指标集进行筛选,建立评价指标体系并确定各评价因子的权重值,并通过指数加权求和法计算各评价单元的综合评价值,确立土地生态适宜性分级标准。划分临泽县土地生态适宜性分区,确定划分区域的土地用途,建立临泽县土地利用适宜生态发展的模式,以期为该县生态安全屏障建设提供科学依据。Taking Linze county as a study area,using GIS technology,based on the administrative division,the natural and geographical conditions,this paper plots out the evaluation unit of land in Linze county,filtrates the evaluating index by applying Delphi method,establishes the evaluation index system and determines the weight value.Then we calculate comprehensive assessment value with SAW method and set up the grade standard of suitability about land ecosystem.On the basis of the grade standard determination,we divide the sub-areas of adaptability of land ecosystem in Linze county,identify the usage of each sub-area,finally sets up the proper mode to adapt to eco-development.This provides scientific basis for development of ecological security barrier in the county.

关 键 词：土地生态适宜性 评价单元划分 评价指标 GIS 

分 类 号：X826[环境科学与工程—环境工程] Q149[生物学—生态学]