中文摘要：

A级景区是重要的旅游节点，A级景区空间结构与区域旅游业发展有着密切关联。采用GIS空间分析法，并结合地理集中指数、基尼系数，对四川省A级景区空间结构以及旅游线路中A级景区空间分布及利用现状进行分析。结果表明：四川省A级景区资源丰富，但各市（州）的景区数量及资源质量差异明显；景区分布较为集中且呈空间集群分布态势；密度分析发现，高密度区仅成都1处，中密度区主要分布在成都外围、广元、绵阳、遂宁、广安、乐山、泸州、宜宾、攀枝花9处。此外，结合旅游线路中A级景区的等级、频次、归属地及类型分析，从实际出发对四川省旅游发展提出优化建议。

英文摘要：

A - level tourist attractions are the important travel nodes. Spatial structure of A-level tourist attractions is closely related to the development of regional tourism industry. Based on GIS spatial analysis method, combined with the geographic con- centration index and Gini coefficient, this paper makes a quantitative analysis of the spatial structure of A - level tourist attractions in Sichuan province and the distribution of A-level scenic spots in tourist routes. The results are as follows ： A - level tourist attrac- tions are abundant in Sichuan province, but the differences of quantity and quality of the scenic spots are significant among different cities （states）. Tourist attractions are concentrated and distributed in spatial clusters. Density analysis has found that the only high density area is Chengdu, the capital of Sichuan province. Medium density areas are mainly distributed in peripheral area of Cheng- du, Guangyuan, Mianyang, Suining, Guang＇an, Leshan, Luzhou, Yibin, Panzhihua, etc. In addition, according to the analysis of level, frequency, destination and type of the A-level tourist attractions in tourist routes, optimization suggestions are put forward for tourism development in Sichuan province under the realistic conditions.