摘要
研究利用GIS技术,结合传统耕地地力评价方法,提出一种基于GIS技术的县域耕地地力评价方法.针对寻甸县耕地资源现状,综合分析影响耕地地力的各种因素,包括养分状况、土壤理化性状、成土母质、灌溉条件等,对基于GIS技术的耕地地力评价的过程和方法进行了讨论:介绍了耕地资源基础信息库的建立,评价单元的划分,参评因素的选择及其权重的确定;重点对利用层次分析法(AHP)建立耕地地力评价体系及其评价模型进行了论述;并总结了利用该方法进行耕地地力评价时存在的问题;最后得到一些有益的结论.
The aim of this paper is to study how to evaluate farmland productivity through the combination of GIS technology with traditional methods of evaluating soil productivity. An evaluation method based on GIS is then put forward. In allusion to the actuality of the farmland resources in Xundian County, important influencing factors such as nutrient condition, soil physical and chemical character, parent material and irrigation condition are analyzed thereafter. The process and the method which are used to evaluate farmland productivity based on GIS are then introduced, such as how to establish the farmland resources information database and compartmentalize the evaluation units, and how to select the evaluation factors and decide their weights. The discussion is made mainly on how to establish the farmland productivity evaluation systems and models using analytical hierarchy process （AHP）. Some problems in the evaluation are also made clear. Beneficial conclusions are finally reached.
出处
《昆明理工大学学报（理工版）》
2008年第3期1-6,共6页
Journal of Kunming University of Science and Technology(Natural Science Edition)
基金
农业部和财政部办公厅“测土配方施肥项目”(2007-25)
云南省土壤肥料工作站“测土配方施肥项目”资助
云南省自然科学基金重点项目(项目编号:2003C002Z)
关键词
GIS技术
耕地资源
耕地地力
GIS technology
farmland resources
farmland productivity
