云南省细香核桃气候适宜性研究

摘要

In this paper,we used satellite remote sensing images to identify the geographical distribution area of the Changning walnuts cultivars,and adapted GIS overlay analysis method to select the annual mean temperature,accumulated temperature higher than 10.8 ℃,and the annual mean air humidity of the distribution area as ecological suitability limiting factor.This study constructed the climate suitability probability model of the cultivars,and carried out the grid map simulation,implemented the appropriate zoning map,and analyzed the spatial statistics.The results showed that the suitable area of Xixiang walnut was mainly distributed in Baoshan,Dali,Lincang,Chuxiong,Honghe and Qujing,was about 1335491 hm2,accounting for about 3％ of the province,and the optimum temperature for growth was 16.4 ℃,accumulated temperature was at 5350 ℃,humidity was around 32％.%利用卫星遥感图像判读细香核桃原产地分布区,利用GIS叠加分析方法采集分布区的年均温、大于10.8℃积温、年均降水、年均空气湿度作为生态适宜性限制因子,构建细香核桃气候适宜性概率模型,并进行栅格地图模拟,制作落实到山头地块的适宜区区划图,并进行空间统计与分析.结果表明:细香核桃适宜区主要分布于保山、大理、临沧、楚雄、红河州、曲靖市等地,面积约为1335491 hm2,约占全省土地面积的3.37％,适宜生长的最佳温度为16.4℃,积温为5350℃,湿度在32％附近.