摘要
利用土地资源承载力(CLC)与土地资源承载指数(ILCC)模型,定量评价了年甘肃省甘南藏族自治州1997—2006年土地资源承载力的变化.结果表明,1997—2006年甘南州人粮关系趋于盈余;土地资源承载力中间虽有波动,但总体呈上升趋势;土地资源承载能力与土地资源利用强度密切相关;人口总量的变化与土地资源承载力变化趋势基本相同.
With the increase of population,land carrying capacity and food safety have been attracted great attention worldwide.From the point of man-grain relationship,by land carrying capacity(CLC) and the land carrying capacity index(ILCC) models,this paper quantitatively analyzes the spatial-temporal dynamic patterns of land carrying capacity of Gannan Tibetan Autonomous Prefecture between 1997 and 2006.The result shows that:the land carrying capacity of Gannan Tibetan Autonomous Prefecture gradually rises with average annual growth of 9.2% from 1997 to 1999,but declines with average annual growth of-3.5% from 1999 to 2002;from 2002 to 2006 the land carrying capacity of Gannan Prefecture gradually rises with average annual growth of 6.2%.The land carrying capacity of Gannan Tibetan Autonomous Prefecture is closely related to the use intensity of grassland resources.
出处
《西北师范大学学报(自然科学版)》
CAS
北大核心
2010年第6期100-103,共4页
Journal of Northwest Normal University(Natural Science)
基金
国家自然科学基金资助项目(40971291)
关键词
土地资源承载力
土地资源承载指数
甘南州
land carrying capacity
land carrying capacity index
Gannan Prefecture