杭州湾滨海湿地景观动态变化分析

以杭州湾滨海湿地为研究区,基于3S技术与模型对湿地景观动态变化进行分析。首先对研究区卫星遥感影像进行湿地景观基础信息提取,通过对遥感影像进行分类处理,提取了不同年份的湿地基础数据,同时基于GIS应用转移矩阵模型研究了不同时段各类景观的变化情况,最后对未来研究区的湿地景观的转化情况进行了驱动力分析。研究表明,5年来研究区岸线逐渐向海迁移,共增加湿地面积10308.05ha2,但人类生产活动对湿地的侵占也在增加。湿地减少的面积超过增加的面积,人为因素作用是影响湿地景观变化的主导因素。通过此研究提供了湿地管理与保护的主要方向与科学依据。

Study on Dynamic Landscape Change in the Wetland of Hangzhou Bay

The wetland in Hangzhou Bay is selected as the research area.In this paper,researches of the dynamic changes of wetland landscape based on 3S technology and models. First,we extract the wetland basic information from a series of satellite remote sensing images of the research area.We acquire the foundational data via classified remote sensing images and at the same time,use the conversion matrix model to study the conversion condition of different landscape types based on the GIS techniques.Finally,we analyzed the driving forces of the wetland landscape in the future.Studies have shown that the shoreline of the research area gradually migrate to the sea in last 5 years,a total increase in wetland area 10308.05 ha2,but the productive activities of human encroachment on wetlands are also increasing.The wetland reduced area surpasses the increased one,the human factor is the predominant which affects the wetland landscape change.This study has provided the wetland management and protection with main direction and scientific foundation.