中文摘要：

研究目的：研究针对生态脆弱区的宜耕未利用土地开发综合评价方法,并以拉萨市堆龙德庆县为例进行实证分析。研究方法：多因素综合评价法,ArcGIS空间分析法,互斥矩阵法。研究结果：自然适宜性、生态敏感性、社会经济条件3方面的综合评价能够科学指导堆龙德庆县的未利用土地开发。在开发策略上,未利用土地重点开发主要位于县域北部及中部堆龙曲河谷地区,适度开发主要分布在县域中部及南部地区,控制开发主要位于县域东部,禁止开发主要分布于县域高海拔地区,4种开发类型占未利用土地总面积比例分别为：2.6%、3.7%、1.2%、92.5%。研究结论：在自然适宜性、生态敏感性、社会经济条件3方面评价基础上的开发决策,更有利于生态脆弱区特别是西藏土地整治中的宜耕未利用土地的可持续利用。

英文摘要：

The purpose of this paper is to develop the evaluation method for potential arable land in vulnerable ecological region, taking the Duilongdeqing county of Lhasa city as example. Methods employed include spatial analysis function in ArcGIS and multi-factor assessment method. The results indicate that the evaluation from the perspectives of physical suitability, ecological sensitivity and social and economic condition can scientifically guide the unutilized land exploitation in Duilongdeqing County. Key potential zone is mainly distributed in the Valley of Dulong River on the central and north of the county, and the proportion takes 2.6%. Moderate exploitation zone is distributed in the central and southern part of the county, and the proportion takes 3.7%. Constrained exploitation zone is distributed in the east part of the county, and the proportion takes 1.2%. Prohibited exploitation zone is distributed at high elevations of the county, and the proportion takes 92.5%. This study can serve as meaningful reference for the development of vulnerable ecological regions, especially for Tibet＇ s potential arable land utilization during land consolidation.