基于县域耕地地力评价的耕地管理分区研究——以山东省青州市为例

基于GIS技术选取合适评价因子,运用层次分析、模糊评价等方法对青州市耕地进行定量化评价。利用模糊C均值聚类法对评价结果进行分区研究,揭示该市耕地质量整体较好;依据FPI和NCE指数确定最佳分区数目为3个,由北向南耕地地力依次降低,受地形因素影响较大;利用模糊聚类方法进一步对分区1进行划分,分为6个管理子区,得到了内部更为均衡的分区管理单元,为统一采取管理措施提供了有益的参考。

Research of Cultivated Land Management Zones Based on the Evaluation of Farmland Productivity-Taking Qingzhou City,Shandong Province as an Example

Based on the GIS technology,appropriate evaluation factors were selected and the cultivated land in Qingzhou City was evaluated by the analytical hierarchy process,fuzzy evaluation and other methods.Using fuzzy C-means clustering method,study on delineation of management zones was performed,and the result showed that the overall quality of the cultivated land in the study area is high .Moreover,three optimal zones were determined according to the FPI and NCE index ,the result showed that the cultivated land fertility decreased from north to south ,greatly in-fluenced by terrain factors.Further delineation for subdistrict 1 was carried out by using fuzzy clustering method,giving six management zones. Therefore,more uniform internal partition management unit was obtained.The research provides a rational reference for management and utiliza-tion of the cultivated land.