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利用ArcGis9.3、GeoDA10.0软件对贵州省各县的化肥施用量进行空间自相关分析。分析了贵州省各县2000、2010年化肥施用量的空间关联性、2010年各县的化肥施用量和粮食产量的空间关联性。结果表明:2010年化肥施用量总体呈现西高东低的趋势,贵州省各县2000、2010年化肥施用量在空间关连上存在正相关性,化肥施用量的分布并不是随意分布的,而是在空间分布上具有集聚性。Moran散点图显示位于一、三象限区的县比较多,二、四象限相对较少,化肥施用量在空间分布上不均衡。化肥施用量在空间上对粮食产量也存在正的相关性,说明化肥施用量较高的地区粮食产量也较高。总体而言,贵州省的化肥施用量呈现“高高”、“低低”集聚分布。
Spatial autocorrelation analysis of chemical fertilizer application in all counties in Guizhou Province was carried out by using ArcGIS 9.3 and GeoDA 10.0 software. Spatial correlation of chemical fertilizer application rates in all counties in Guizhou Province in 2000 and 2010 was analyzed. The spatial correlation of chemical fertilizer application and grain yield in each county in 2010 was analyzed. The results showed that the amount of chemical fertilizers tended to decrease from west to east in 2010, and there was a positive correlation between chemical fertilizer application rates and spatial distribution in all counties in Guizhou Province in 2000 and 2010. The distribution of chemical fertilizer application was not randomly distributed, Spatial distribution of the gathering. Moran scatter plots show that the counties in the first and the third quadrants are relatively large, the second and the fourth quadrants are relatively few, and the chemical fertilizer application rates are not evenly distributed in space. There was also a positive correlation between the chemical fertilizer application and grain yield, indicating that grain yield was also higher in areas with higher chemical fertilizer use. Overall, the chemical fertilizer application in Guizhou Province showed “high” and “low” concentration distribution.