以长汀县园地、林地和草地为评价对象,选取地形、气候、土壤、区位和生态环境5方面共11个因子,构建长汀县茶园适宜性评价指标体系。在GIS支持下,运用层次分析法、模糊数学法和综合指数法建立茶园适宜性评价模型,应用动态聚类分析法对评价结果进行分类。结果表明:长汀县适宜种植茶叶的面积为167 288.21 hm^2,占全县园地、林地和草地总面积的61.64%,其中高度适宜区和中度适宜区面积分别为33 674.52 hm^2和87 721.95 hm^2,分别占全县适宜茶叶种植面积的20.13%、52.44%。高度适宜区主要分布在濯田镇、南山镇、宜成乡和涂坊镇,面积共为23 535.89 hm^2,占全县高度适宜总面积的69.89%。利用该结果可为长汀县茶园合理建设和茶叶稳产增收提供科学指导。
An integrated evaluation of the orchard, woodland and grassland was performed for suitability of tea garden.Choosing 11 evaluation indexes from 5 respects of landform, climate, soil and location and ecology, the suitability evaluation index system of tea garden in Changting county was establish. With the aid of GIS, an suitability evaluation model for tea garden was developed by using the principal of hierarchy analysis, fuzzy mathematics and methods of the exponential weighted algorithm. Dynamic cluster analysis was used to classify the evaluation units.The results showed that the total area of land suitable for tea production reached 167 288.21 hm^2, accounting for 61.64% of the total area of the orchard, woodland and grassland in Changting, and about 33 674.52 hm^2or 20.13% was high in suitability,and 87 721.95 hm^2or 52.44%, moderate in suitability.The land in "High suitability" category was mainly distributed in the regions, of Zhuotian, Nanshan, Yicheng and Tufang, totaling up to 23 535.89 hm^2, or 69.89% of the category.The results can provide scientific guidance for the rational construction of tea garden and the increase of the production of tea in Changting County.