基于GIS的明光市耕地地力评价

在明光市测土配方施肥和第二次土壤普查资料的基础上,运用GIS建立明光市耕地资源数据库。针对明光市三大耕地类型区(平原潮土耕地类型区、稻田耕地类型区、山地丘陵耕地类型区)特点,分别建立其耕地地力评价指标体系。在GIS的支持下,利用系统聚类方法、层次分析法、模糊评价等数学方法和数学模型成功地实现了耕地地力自动化、定量化评价。评价获取了明光市各耕地地力等级面积及其分布信息,经实地调查分析符合当地实际,表明运用该技术方法对耕地地力评价的可行性和科学性。

Evaluation of the farmland fertility of Mingguang city based on GIS

The database of arable land resources of Mingguang city was build on the basis of information in the Balanced Fertilization on Soil Testing and Second Soil Survey with GIS.Then,fertility evaluation index systems were established in each type of cultivated land area,according to the three major types of cultivated land area characteristics in Ming-guang city(Plain influx of farmland soil type,type of paddy cultivated land area,hilly mountain area of arable land types).The automatic and quantitative valuation procedure was realized by adopting various mathematical models and methods such as system cluster,Analytical Hierarchy Program,fuzzy math,etc and supported by GIS techniques.The area and spatial distribution information of cultivated land fertility were acquired in Mingguang city,and the results were consistent with local conditions according to field survey and analysis.The approach was feasible and effective in cultivated land fertility assessment.This research contributes significantly to scientific management and sustainable use of cultivated land resources.