杭州湾滨海湿地时空格局变化遥感调查研究

采用TM、SPOT-5卫星遥感数据,通过建立杭州湾滨海湿地分类体系和解译标志并进行人机交互解译,完成了杭州湾1987、1995、2003和2009年滨海湿地提取和分类。研究了4期杭州湾滨海湿地的利用状况、面积,以及时空格局变化情况,研究显示:1987~2009年期间,杭州湾滨海湿地主要表现为滩涂湿地的逐年减少和库塘湿地的逐年增加;1995年之前湿地变化以自然驱动力为主,之后人类活动影响明显,对近海域、滩涂不断开发,尤以南岸为主;以杭州湾湿地公园为典型的沼泽草甸湿地得到了较好的保护。

Remote Sensing Investigation for Spatial and Temporal Change of Coastal Wetlands in Hangzhou Bay

In this paper, the TM, SPOT5 satellite remote sensing data were used to conduct Human-Computer interaction interpreta-tion of coastal wetlands.Assisted by the classification system and interpretation symbol, the distribution and classification of coastal wetlands along the Hangzhou Bay in 1987, 1995, 2003 and 2000 were extracted.On this basis, the utilization status of coastal wet-lands and its area and spatial and temporal changes were studied.We have found that from the 1987 to the2009 , tidal wetland was decreasing year by year and the pond wetlands increased year by year.Wetland change mainly impact of natural driving force before 1995, while significantly affected by human activities after 1995, especially in the south bank.Hangzhou Bay Wetland Park, which is a typical marsh meadow wetland, has been well protected.