重庆市油桐气候区划精细化研究

A GIS-Based Research of Climate Regionalization for Tung Oil Tree Planting in Chongqing

重庆市有适宜油桐生长发育的优越气候,属于全国油桐中心栽培区.但重庆境内地形复杂,山地立体气候明显,在海拔、气温、降水、日照等多种气象因子影响下,油桐生长分布有一定规律.本文选取1971-2000年气候数据,基于GIS进行空间化分析,同时结合实地调研等相关资料,对油桐生长进行气候区划,划分出光温匹配最适宜区、气候温热适宜区、气候温凉适宜区、气候炎热较适宜区、气候冷凉较适宜区、光照一般较适宜区和气候寒冷不适宜区等7个不同类型栽培区,为油桐种植提供客观的参考依据.

The climate in Chongqing is generally suitable for the growth and development of tung oil tree（Vernicia fordii） and,therefore,Chongqing is a central tung oil cultivation area in China.However,because of the complex terrain and the obvious mountain stereo-climate in Chongqing,the growth and distribution of tung oil trees are influenced by altitude,temperature,precipitation and sunshine.In a study reported in this paper,climate data in 1971-2000 is subjected to GIS-based spatial analysis in combination with the related information in field research to make climate regionalization of tung oil tree cultivation.As a result,Chongqing is divided into seven regions,i.e.the most suitable region with adequate sunshine and favorable temperature,the suitable region with temperate climate,the suitable region with cool and comfortable climate,the sub-suitable region with hot climate,the sub-suitable region with cool climate,the sub-suitable region with average sunshine and the unsuitable region with cold climate.The above results can provide objective reference for tung oil tree planting.