中文摘要：

基于1990、2000和2003年的遥感数据，研究旅游开发活动对北海银滩沙坝－潟湖景观稳定性的影响。研究结果表明：（1）旅游开发等人类活动加速了岸滩的蚀退和渴湖的淤积，使沙坝－潟湖景观体系走向衰退；（2）海岸景观生态过程与联系使得沙坝渴湖景观整体的演变效应扩大；（3）旅游活动对沙坝－潟湖景观格局的稳定性有显著的影响。研究结果为海滩旅游的开发及生态管理提供了科学依据。

英文摘要：

On the basis of remote sensing images, this paper studies the tourism economic activities＇ influences to the stability of barrier--Lagoon landscape of Beihai Yintan beach and draws conclusions as follows ： （1） Tourism economic activities accelerates the withdrawal of beach erosion and siltation of the lagoon and made the barrier--Lagoon landscape systems decayed. （2） Coastal landscape＇s ecological processes and interaction enlarges the barrier--lagoon landscape＇s ecological evolution effects. （3） Tourism economic activities have prominent impact on the stability of barrier--lagoon landscape. And such conclusions can be used for reference of beach tourism exploitation and management.