摘要
本文将传统土地适宜性评价的数值计算和GIS图形处理有机地结合起来,以洞庭湖流域为例选取了土壤侵蚀、环境、洪水威胁、气候4个因子作为参评因子,利用成对比较排序法确定各评价因子的权重,然后通过GIS工具运用多因素综合评价方法对洞庭湖流域的农用地进行了适宜性评价;同时考虑研究区的特殊地理区位,对该流域农用地影响较大的自然灾害因子权重加大后重新进行评价并与一般的评价进行比较,获得了较逼真的评价效果。
In this paper,the numerical calculation of traditional land suitability evaluation is integrated with GIS graphical procession effectively.Taking Dongting Lake Region as an example,the soil erosion,environment,threaten of flooding and climate factor are four contestant factor through using paired comparison method to determine the weight of each factor.Then the multi-factor evaluation method was used to evaluate the agricultural lands which locate in the Dongting Lake Region.Moreover,considering the special geographical location,the natural disaster weight was increased for the reevaluation and it was compared with the traditional evaluation for drawing some valid conclusions.
出处
《林业科学研究》
CSCD
北大核心
2008年第z1期74-79,共6页
Forest Research
基金
国家"十一五"科技支撑重点项目课题"湿地资源监测与评估技术研究(2006BAD23B03)"
关键词
洞庭湖流域
农用地
GIS
适宜性评价
Dongting Lake Region
agricultural land
GIS
suitability evaluation
