RS、GIS支持下的都匀毛尖茶种植适宜性定量研究

Evaluation on the Suitable Land of Duyun Maojian Tea Planting Based on RS and GIS

本文在收集大量资料和实地调查都匀市现有毛尖茶种植区的基础上,数字化都匀市毛尖茶种植分布图,在此基础上将毛尖茶种植分布图通过GIS空间分析方法与海拔、坡度、坡向、土壤pH值、≥10℃积温、年均降雨量、空气相对湿度共7个评价因子分别进行空间叠加分析,得出毛尖茶生长的海拔、坡度、坡向、土壤pH值、≥10℃积温、年均降雨量、空气相对湿度等重要影响因子的数量指标,并将这些指标划分为一级适宜区、二级适宜区、三级适宜区和不适宜区,对全都匀市的毛尖茶种植适宜区进行评价,最后根据评价结果分析各等级适宜地空间分布,并提出都匀毛尖茶种植业布局建议,从而为政府、企业和茶农提供科学决策依据。

This paper firstly applies RS to interpret the actuality of land use,and primarily divides it into suitable and unsuitable land for Duyun Maojian Tea planting.Secondly,with the evaluation factors such as elevation,slope,aspect,pH of soil,accumulated temperature of≥ 10℃,air relative humidity chosen and the weights of every factor worked out through experts＇ evaluation and by means of different kinds of functions of GIS,the suitable land is evaluated.At last it also analyzes the space distribution of each type of the suitable land and offers suggestions for the government,the enterprise,and farmers to make scientific decisions.