气候多因子权重相似分析及其在农业气候区划中的应用

以川芎为例,在分析川芎生长发育6个阶段平均温度、降水量、日照时数和温度日较差与川芎产量关系的基础上,以川芎道地产区都江堰为参照点,提出以p(i,j)=Rij2*|aij|/∑(R2ik*|aik|)作为权重系数的气候多因子权重相似性分析方法,并以相似系数和相似距离为指标因子,将四川盆区划分为川芎气候生态适应性的最适宜区、适宜区、次适宜区和不适宜区4个大的区域.这是气候多因子权重相似性分析方法在农业气候适应性区划中应用的一种尝试,收到一定的效果.指出利用该分析方法应该注意的问题,对促进气候相似性分析方法在农业气候适应性气候区划和论证中的应用具有积极作用.

Abstract：

Ligusticum chuanxiong Hort. was taken as an example, its whole developmental period was divided into 6 main stages and the average temperature, precipitation, sunshine-hours and diurnal temperature range for every stage were calculated, the relationships between the climatic yield of L. chuanxiong and climatic factors were analyzed, with p(i, j) = Rij2* | aij| /n∑k=1(Rik2 * | αik |) as weight parameters , and an analogical analysis technique with different weights to climatic factors was put forward in this paper.Similarity coefficient and similarity distance were used as index factors and Sichuan Basin was divided into 4 areas, i.e. most suitable area, suitable area, sub-suitable area and unsuitable area for L. chuanxiong production. This attempt to apply the analogical analysis technique with different weights to climatic factots in agro-climatic regionalization has yielded desirable results.

An Analogical Analysis Technique with Different Weights to Climatic Factors and Its Application in Agroclimatic Regionalization