GIS支持下的广西早稻春季冷害区划研究

GIS-based study on zoning of cold damage to early rice in Guangxi

利用广西省90个气象台站1961-2006年气候资料和站点地理信息,建立了早稻冷害指标的空间分析模型;依托G IS软件平台,利用1∶25万广西基础地理背景数据,按照1km×1km细网格推算出早稻冷害指标的空间分布;运用G IS技术划分出广西早稻低温冷害中无冷害、轻度冷害、中度冷害和严重冷害的4个区域的分区结果,并对区划结果进行了评述和建议。

Making use of the climate data from 1961 to 2006 and geographical information of 90 weather stations in Guangxi, spatial analyzing model for indices of cold damage of early rice were built. Based on the GIS software platform, and using Guangxi fundamental geographic data on the scale of 1 to 250000, the indices of cold damage in Guangxi were reckoned on the little grids of 1 km × 1 km. the spatial distribution of cold Guangxi were analyzed by the GIS technique, which gave out moderate and serious degrees, the assessment and suggestion for the divisional result o different cold damage damage for early rice f cold damage ： zero, light, regions were put forward.