基于主成分分析的贵州省水资源承载力时空变化研究

Study on the Temporal and Spatial Variation of Water Resources Carrying Capacity in Guizhou Province Based on Principal Component Analysis

为了解贵州省水资源承载力的状况,利用SPSS软件中的主成分分析模块,选取贵州省2003~2013年的16个水资源评价指标和2013年各地区的17个指标进行评价。结果表明:影响贵州省水资源承载力的主要因子包括水资源利用程度、社会和经济发展水平、人口、水资源数量;从时间上看,2003~2013年贵州省的水资源承载力呈现出逐年上升的发展趋势;从空间上看,贵州省水资源承载力存在地区差异,贵州北部高于南部。

In order to understand the situation of water resources carrying capacity in Guizhou Province, byusing the principal component analysis in SPSS software modules,16 water resources evaluation indexes from2003 to 2013 and 17 indexes of each region in Guizhou Province were selected to evaluate.The results show thatthere are four main factors affecting the carrying capacity of water resources in Guizhou province,including uti-lization degree of water resources, the level of social and economic development, population and water resourcesquantity; In terms of time,the overall carrying capacity of water resources in Guizhou Province has showed an in-creasing trend during 2003~2013;From the spatial point of view, there are regional differences of the water re-sources carrying capacity in Guizhou Province, north of Guizhou is higher than the South.