中文摘要：

以北海银滩两组沙坝-潟湖景观的旅游开发为例，基于1990，2000和2003年的遥感数据和GIS技术，研究旅游开发活动对沙坝-潟湖景观稳定性的影响。研究结果表明，1）目前沙坝（滩）用于旅游开发，人类活动作用下加速岸滩的蚀退和海湖的淤积，使沙坝-潟湖景现体系走向衰退。2）人类活动作用下两组沙坝-潟湖景观呈同步变化，海岸景观生态过程与联系使得整体的演变效应明显扩大。3）旅游活动影响下的沙坝-潟湖景观格局的稳定性主要取决于旅游经济活动对沙坝-潟湖景观的合理利用。研究结果可为沙坝-潟湖景观和海滩旅游度假区的旅游开发及生态管理提供参考和借鉴。

英文摘要：

Based on the remote sensing data and GIS techniques, the impacts of tourism development activities on barrier-lagoon landscape were studied by taking two groups of barrier-lagoon landscapes of Beihai Yintan as an example. It is shown from the study results that 1） the tourism development activities in the barrier area have accelerated the retrogradation of shore bank and the siltation of lagoon to result in the degradation of barrier-lagoon landscape system; 2） the two groups of barrier-lagoon landscapes varied synchronously, and the ecological processes and relations of coastal landscapes significantly extended the overall effects of ecological evolution; 3） the stability of barrier-lagoon landscape pattern under the actions of tourism activities is dependent mainly on the reasonable utilization of barrier-lagoon landscape by the tourism economic activities. The study results can be used for reference in tourism development and ecological man- agement of barrier-lagoon landscape and beach holiday resort.