基于GIS的黄山市屯溪区耕地地力评价研究

以安徽省黄山市屯溪区为例,研究了耕地地力等级及土壤养分含量状况的分布情况.研究采用土壤图、土地利用现状图及行政区划图相叠加方法来确定和划分评价单元,结合层次分析法综合评价了耕地地力等级.结果得出屯溪区的耕地地力等级及养分状况等级的分布图,其各地力等级比例分别为一等地为11.1％,二等地为15.1％,三等地为40.2％,四等地为24.4％,五等地为8.1％,六等地为1.2％.研究对山地的耕地地力评价方法提出新的评价方法,其评价结果对耕地资源的集约化利用有重要的作用.

A Research on the Evaluation of Soil Fertilities of Farmland in Tunxi District of Huangshan City Based on GIS

Taking Tunxi district of Huangshan City as an example, the paper studies the productivity level of farmland and the distribution of soil nutrient contents. Soil map, the current land use map and administrative zoning map are used to determine and divide evaluation unit, and AHP is adopted for the comprehensive evaluation of cultivated land fertility. The distribution map of the rank of cuhivated land fertility and nutrient status in Tunxi is obtained. The results show that the first-class land accounts for 11.1%, the second-class land 15.1%, the third-class land 40.2%, the fourth-class land 24.4%, the fifth- class land 8.1% and the sixth-class land 1.2%. This study proposes a new method for the productivity evaluation of mountain farmland, and the evaluation results play a vital role in intensive cultivated land use.