贵州省土地综合承载力时空分异研究

Temporal and Spatial Differentiation of Comprehensive Land Carrying Capacity in Guizhou Province

基于贵州省统计资料和实地调查资料,在GIS技术支持下,从水土资源、经济、社会、生态环境等4个方面,遴选出24个指标,建立贵州省土地综合承载力评价指标体系,对贵州省1990—2010年土地综合承载力时空分异进行了研究.结果表明:(1)1990—2010年贵州省土地综合承载力水平不断提高,各州市土地综合承载力水平提高的速度不尽相同;(2)全省土地综合承载力空间差异显著,影响土地综合承载力水平的各因素的空间差异也十分明显;(3)影响土地综合承载力时空分异的各因素贡献率有所不同,经济、社会因素贡献率呈上升趋势,水土资源因素贡献率呈下降趋势.

Based on the statistical data and field survey data , evaluation index system of comprehensive land carrying capacity is established from four aspects of soil and water resources , economic, social, and ecological en-vironment in Guizhou province using GIS technology .Using factor analysis , the temporal and spatial differentiation of comprehensive land carrying capacity is studied in Guizhou province from 1990-2010 .The results show that the level of comprehensive land carrying capacity continuously improves in Guizhou province from 1990-2010 , howev-er, the growth rate in various regions is not at the same speed; the comprehensive carrying capacity of land in Guizhou province has significantly difference , the factors which significantly affect spatial difference of comprehen-sive land carrying capacity are obvious;the contribution rate of factors which impact comprehensive land carrying capacity is different , the contribution rate of economic and social factors rise , and the contribution rate of soil and water resources factors decline .