GIS支持下的福建省春花生用地适宜性评价

Evaluation of the suitability of land resources for spring peanut in Fujian Province on GIS platform

以福建省耕地为评价对象,以250m×250m栅格为评价单元,根据春花生生长的立地要求,建立由气候条件、立地环境、土壤理化性状、社会经济条件等组成的18项评价因子体系,借助GIS与修正的加权指数和、动态聚类等模型评价福建省春花生适宜用地数量、质量及分布。结果表明,福建省宜春花生用地面积占耕地总面积的94.74%,全省宜春花生用地质量总体良好。春花生最适宜区用地资源主要分布在南平、三明、漳州、福州和泉州5市,合计面积23.39万hm2,占最适宜区总面积的80.93%。针对福建省春花生用地现状及其存在问题,提出了春花生用地可持续利用对策。

Based on demands of spring peanut habitat and using cultivated land as an evaluation object at 250m× 250m grid resolution, a suitability evaluation index system of spring peanut in Fujian Province was established. The index system includes 18 relevant factors from 4 aspects： climate, habitat environment, soil physical and chemical properties and social economy. The quanti- ty, quality and spatial distribution of suitable land resources for spring peanut were assessed by means of GIS technique, integrated with correctional weighting-multiplication model and dynamic clustering analysis. The results show that the total suitable land for spring peanut in Fujian Province is in good quality and accounts for 94.74% of total arable land. The most suitable land resources for spring peanut cultivation are distributed mainly in five regions： Nanping, Sanming, Zhangzhou, Fuzhou, and Quanzhou, with a total area of 23.39 × 10^4 hm^2 , which is 80.93% of the most suitable regions. Some sustainable utilization countermeasures aiming at the current situation and existing problems of land resources utilization for spring peanut are proposed.