GIS在气候资源分析及农业气候区划中的应用

The application of GIS to the analysis of climatologic resources and the agri climatological zoning

根据陕西省气候背景及地形、地貌特点 ,分区域建立气候要素网格推算模型 ,将陕西省气候资源推算至 0 .5km的地表网格单元上 ,利用 GIS技术使与地理位置相关的气候资源信息在计算机上以图形的形式 ,得以精确地描述 ,从而实现气候资源的调查。在此基础上 ,并根据作物气候区划指标及每个区划因子不同分级的评分标准 ,进行多要素空间分析 ,完成综合评价 ,得到作物农业气候区划空间数据集合。对生成的各种资源空间数据 ,进行多种图形整饰和矢量化处理 ,制作出气候资源和作物农业气候区划矢量图产品。

Based on climatological backgrounds and freatures of topography and landscape in Shaanxi province,regionally, the caculating grid model of climatic elements was eatablished,and the climatological resources can be computed to surface grid units. According to index of crop climatological zoning and different weighted standard of every zoning factor,multiplespatial elements were analysed,the space data set of crop agri climatic zoning was obtained. The renovation and vector treatment was made for resource space data of producing, lastly, vector chart of climatic resources and crop agri climatic zoning was shown on.