云南省土地综合承载能力空间差异研究

土地资源承载力是区域人口、资源与环境可持续发展评价的重要指标。结合云南省实际情况,从水土资源、生态环境、社会资源和经济技术4个方面选取了20个评价指标构建土地综合承载力的评价指标体系,采用均方差决策赋权法、综合指数法对云南省2008年的土地综合承载力状况进行综合评价。结果显示,依照土地综合承载力评价结果将云南省划分为4大类型承载区域,整体上呈现了西北、东南、东北地区土地综合承载力指数值较低,逐渐向中部一带增高,其空间分异特征较明显,具有一定的地域相近性。进而分析了造成此空间差异的原因并提出了相应的对策与建议,为改善云南省土地综合承载力状况,谋求可持续发展提供参考。

SPATIAL DIFFERENTIATION OF COMPREHENSIVE LAND CARRYING CAPACITY IN YUNNAN PROVINCE

Land carrying capacity of a country or a region becomes an important index for evaluating the develop- ment of population, sustainable development of resources and environment. Combined the realistic development of Yunnan Province, this article structured the appraisal system of the land＇s comprehensive carrying capacity from the fields of land and water resource, environment, social development and economical technology, synthetically evaluated the land＇s comprehensive carrying capacity of Yunnan Province in 2008 by using standard deviation deci- sion method and integrated capacity index method. And the result showed that the whole Yunnan Province can be divided into four types. On the whole, it decreased from northwest, southeast and northeast to central part of Yunnan Province. The level of land＇s comprehensive carrying capacity in Yunnan Province was comparatively large, and moreover presented a certain regional similarity. The paper analyzed the situation of spatial variations, and then found the driving force and the relevant policy connotation, thus to provide the reference of improving the regional land＇s comprehensive carrying capacity and striving for sustainable development.