基于GIS的陕西省烤烟气候生态适宜性区划

GIS based ecological eegionalization of tobacco production in Shaanxi province

为掌握陕西省烤烟种植气候适宜性地域分布,通过对气象条件影响烤烟生长的研究,确定陕西省烤烟气候区划指标,利用GIS技术对指标各气象因子进行空间分布模拟,结合区划指标制作出精细化的烤烟气候适宜性区划图。结果表明:陕南汉江支流海拔300～700 m的平原、缓坡地和商洛地区南部海拔1000 m以下的川道、浅山区为陕西省烤烟适宜区,此区光、热、水气候资源满足优质烤烟的生长需求,可作为陕西烤烟生产基地。

Indexes of climatic division for tobacco production were determined based on study of effect of meteorological conditions.Spatial distribution of meteorological factors was simulated by GIS,and combined with regionalization indexes and regional climate application map for tobacco was built.Results showed that the suitable regions for tobacco planting in Shaanxi province were plains and gentle slopes between the elevation of 300 and 700 meters in Hanjiang river areas,and valleys and hilly areas below 1000 meters above sea level in Shangluo region.Sun light,temperature and water resources in these areas can meet the requirement of tobacco planting.