基于3S技术的图们江下游湿地系统分类及分布特征研究

Study on wetland classification and distribution in the Tumen River lower stream area based on 3S technologies

利用3S技术对图们江下游地区的湿地系统进行了分类.以Spot卫星影像为信息提取的数据源,采用监督分类和人工分类相结合的方法,把该地区的湿地划分为5个系统、8个子系统和12个类型.通过对分类结果的比较分析发现,虽然图们江下游地区湿地的面积比较大,但是主要以人工湿地为主,自然湿地所占比重低且湿地景观比较破碎,湿地生态系统脆弱.

This research utilizes 3S technologies to classify the wetland system of the Tumen River lower stream area.Utilizing Spot satellite images and combining supervised and manual classification methods,classified this region＇s wetlands into 5 systems,8 subsystems and 12 types.Through comparative analysis of the classifications results,it was revealed that although the wetlands of Tumen River lower stream area occupy a large area,they are mainly artificial wetlands.The natural wetland area holds only a small proportion and presents fragmental pattern;moreover,the ecosystem is much fragile and vulnerable.This research＇s results provide theoretical foundation and basis for the effective management and protection of the ecosystem of the Tumen River lower stream wetlands.