摘要
为了评价江南茶区茶树栽培适宜性,本文综合考虑气候、地形和土壤因子,筛选出年平均气温、年大于等于10℃的活动积温、极端最低气温小于等于-13℃出现的频率、4—10月的平均相对湿度、海拔高度、坡度、坡向、土壤酸碱度和土壤质地等9个评价指标,应用AHP熵权法确定指标的权重系数,并结合土地利用类型图和茶树栽培现状,经细网格推算,构建茶树栽培适宜性评价模型,将江南茶区茶树栽培区划分为适宜、较适宜和不适宜3个等级,并进行分区评述。结果表明,适宜、较适宜和不适宜茶树栽培的面积分别为317518.3km^2,410343.3km^2,148064.5km^2,分别占江南茶区评价面积的36.25%、46.85%和16.9%。利用浙江省松阳县茶树种植现状分布图对松阳县茶树栽培综合适宜性区划结果进行检验评价,表明松阳县茶树栽培适宜性区划结果与茶树种植的分布现状比较吻合。评价结果可为茶树栽培的优化布局提供科学依据。
In order to evaluate the suitability of tea（Camellia sinensis）cultivation in the regions south of the Yangtze River,with the climate,topography,and soil factors taken into consideration,the article selects the annual average temperature,the annual accumulated temperature above 10℃,the frequency of extremely low temperature below-13 ℃,the average humidity from April to October,slope,aspect,altitude,soil pH,and soil texture to evaluate the comprehensive suitability in the regions south of the Yangtze River.The weights of suitability evaluation indexes are calculated by the AHP entropy method.Combined with the land-use map and the status of tea cultivation,the evaluation model of suitability of tea cultivation is established by the fine grid calculation.The suitability of tea cultivation is divided into 3 classes：suitable,sub-suitable and non-suitable regions.The results show that the areas of suitable,subsuitable and non-suitable regions for tea cultivation are 317518.3 km-2,410343.3 km-2,and 148064.5 km-2,which accounted for 36.25%,46.85% and 16.9% of the total evaluation area,respectively.Using the spatial distribution of tea cultivation of Songyang to validate and evaluate the comprehensive suitability regionalization of tea cultivation,it is demonstrated that the results of the model are identical with the spatial distribution of the status of tea cultivation.The evaluation results provide a scientific basis for the optimized layout of tea tree cultivation.
作者
胡波
金志凤
李颖
丁烨毅
李仁忠
Hu Bo1, Jin Zhifeng2, Li Ying3, Ding Yeyi1, Li Renzhong2(1. Ningbo Meteorological Service, Zhejiang, Ningbo 315012; 2. Zhejiang Climate Center Hangzhou 310017; 3. Zhejiang Institute of Meteorological Sciences, Hangzhou 31000)
出处
《气象科技》
2018年第2期390-395,共6页
Meteorological Science and Technology
基金
公益性行业(气象)科研专项"江南茶树生产气象保障关键技术研究"(GYHY201306037)
中国气象局气象关键技术集成与应用项目"优质农产品气候品质评价技术集成与应用"(CMAGJ2013M20)资助
关键词
土壤酸碱度
AHP熵权法
适宜性评价
检验
江南茶区
soil pH
AHP entropy method
suitability evaluation
verification
tea planting region in southern Yangtze River
