GIS支持下的海金山农场耕地地力评价与等级划分

Evaluation and Classification of Farmland Productivity Level in Sea Golden Hill Farm Based on GIS Technology

为了对耕地资源的科学管理和可持续利用提供依据,以GIS技术为支持,选取立地条件、理化性状、气象条件3个方面10个影响因子建立耕地地力评价体系及其模型,采取累积频率曲线分级法对赤峰市海金山农场耕地地力进行综合评价。结果表明,在赤峰市海金山农场1 042.1 hm^2耕地中,一至五等地分别占该农场耕地的11.3%、36.0%、31.3%、12.1%、9.2%。

In order to provide the basis for scientific management and sustainable utilization of cultivated land resources,based on GIS technology,this research selection of site conditions,physical and chemical proper-ties,meteorological conditions were three influencing directions and10influence factors were selected to es-tablish the cultivated land fertility evaluation system and its model.The cumulative frequency curve classifica-tion method was used to comprehensive evaluate of the farmland productivity in Chifeng city sea golden hill farm.The results showed that,1042.1hm2cultivated land in Chifeng city sea golden hill farm,the area of the cultivated lands form the first grade to fifth grade were respectively accounted for11.3%,36.0%,31.3%,12.1%and9.2%.