基于GIS的呼图壁县制种玉米精细化气候区划

Fine Climate Division of Maize Seed Production in Hutubi County Based on GIS

利用呼图壁县及周边15个气象站1961—2018年气候资料和台站地理信息数据,应用地理信息系统(ArcGIS10.0)空间分析技术将新疆1:50000 DEM数据转成分辨率为(100 m×100 m)的数字高程,并提取对应站点上的经度、纬度、海拔高度、坡度、坡向等,通过地统计回归和反距离权重等方法构建≥10℃积温、无霜期、7月平均气温、≥35℃高温日数等指标因子与地理因子的空间分析推算模型,获取制种玉米各区划指标因子的空间分布模拟值,并将实际值与模拟值之残差部分进行空间内插订正,结合制种玉米区划指标等级,最终得到制种玉米适宜种植精细化区划。区划结果表明,呼图壁全县划分为最适宜区、适宜区、次适宜区、风险区和不适宜区。最适宜种植区分布在呼图壁县北部平原地带,包括呼图壁县、十里店镇、五工台镇、园户村镇和大丰镇等广大区域;适宜区分布在中部平原地带,包括独山子乡、龙王庙村、宁州户村、二十里店村等区域;次适宜种植区靠近丘陵、低山地带,包括石梯子乡。

Based on the climate data and station geographic information data of Hutubi County and its surrounding 15 meteorological stations from 1961 to 2018,combined with geographic information system(arcgis10.0)technology,the 1:50000 DEM data was converted into digital elevation with resolution(100 m×100 m).On the basis of comprehensive consideration of climate factors and terrain factors,such as longitude,latitude,altitude,etc,the spatial simulation model of index factors such as accumulated temperature≥10℃,frost free period,average temperature in July and high temperature days(≥35℃)were constructed by inverse distance weight method.The spatial distribution of regionalization factors of maize seed production was calculated by fine grid,and the residual part was corrected by spatial interpolation.Finally,the refined climate regionalization of maize seed production was obtained.The results showed that the county was divided into five regions:the most suitable region,the suitable region,the sub suitable region,the risk region and the unsuitable region.The most suitable planting area was in northern plain of Hutubi county,including Hutubi county,Shilidian town,Wugongtai town,Yuanhu town and Dafeng town;the suitable planting area was in the central plain,including Dushanzi township,Longwangmiao village,ningzhouhu village and erlidian village;the sub suitable planting area was in the hilly and low mountain area,including Shitizi township.