On the basis of man-grain relationship,using the land carrying capacity (LCC) and land carrying capacity index (LCCI) models,the spatial-temporal variation of land carrying capacity was quantitatively evaluated in Guizhou Province from 2000 to 2015 on basis of 3 spatial scales which were province,city and county.The results showed that:Observed from Guizhou Province level,the land carrying capacity has been in states of population overloads and food shortages;Observed from spatial patterns,the cities (states) of food surplus were increased and man-grain overloads were decreased,the man-grain relationships was improved,the land carrying capacity was lowest in Zunyi and highest in Guiyang.Observed from counties scale,the land carrying capacity of most countries were obviously improved,the land carrying capacity of northern countries were significantly higher than other countries,the food surplus countries mainly distributed in Zunyi,and the population overloads countries mainly concentrated in Guiyang-Anshun-Liupanshui-Qianxinan.%基于人粮关系,运用土地资源承载力(LCC)模型和土地资源承载力指数(LCCI)模型,从全省、分市、分县3个空间尺度定量评价了2000-2015年贵州省土地资源承载力的时空变化过程.结果表明:从全省水平上看,贵州省土地资源承载力一直处于人口超载、粮食短缺的状态;分市格局上看,粮食盈余市(州)增加,人粮超载市(州)减少,人粮关系趋于改善,遵义市土地资源承载力指数最低,贵阳市最高;分县尺度上看,全省大部分县域的土地承载力状态有明显改善,北部地区土地资源承载力明显高于其他地区,目前粮食盈余县主要分布在遵义市,贵阳—安顺—六盘水—黔西南一带的人口超载县最为集中.
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