中文摘要：

采用相对资源承载力的研究方法，分析了2005--2014年天水市及各区县的各类相对资源承载力变化趋势。研究表明：无论以全国还是以甘肃省为参照区，2005--2014年天水综合承载力一直处于超载状态，且整体呈减小趋势，但综合承载力在2009年以后呈增加趋势。以甘肃省为参照区，天水各区县相对资源承载力仅有清水县一直处于富余状态，而在超载区县中，甘谷县的超载尤严重；以天水市为参照区，呈超载状态的有秦安县、甘谷县、武山县、张家川县。其中，甘谷县、武山县超载较严重，秦州区、麦积区、清水县呈富余状态。天水各区县的相对资源承载力区域差异明显，并且其发展对土地资源的依赖较大，因此为保证天水今后的可持续发展，必须要严格控制人口数量、适当增加耕地资源、加速区域经济发展、加强生态环境保护、节约能源等。

英文摘要：

This paper used the theory of relative carrying capacity resources, taking Tianshui as the study regions, calculating the relative carrying capacity of land resources, the relative carrying capacity of economic resources and synthetic carrying capacity of resources change of Tianshui from 2005 to 2015. Thus conclusions were drawn： No matter what the whole country or Gansu of reference areas, during from 2005 to 2015 years the syn- thetic carrying capacity of resources of Tianshui was in a state of overloading, and the overall decreasing. But it was in an increasing trend after 2009. Taking Gansu as the reference areas for counties, the synthetic carrying capacity in counties of Tianshui showed ： Qingshui was the state of relative enough from 2005 to 2015, and Wushan, Gangu was serious overload. Taking Tianshui as the reference areas, the synthetic carrying capacity in coun- ties of Tianshui showed ： The synthetic carrying capacity of Wushan, Gangu, Zhangjiachuan, Qinan was the state of overload, as well as the synthetic carrying capacity of Qinzhou, Maiji, Qingshui was the state of relative enough from 2005 to 2015. The synthetic carrying capacity was obvious differ- ence of among counties in Tianshui and the sustainbale development depended on land resources. Finally, through the analysis of relative carrying ca- pacity of resources in Tianshui, put forward the corresponding countermeasures on sustainable development of Tianshui. So it was necessary to control the population size, proper increase of cultivated land resource, accelerate the regional economic development, strengthen the ecological environmental, protection save energy.