江汉平原(四湖地区)和洞庭湖区湿地的分类与分布特征

Classification of Wetlands and Their Distribution of theJianghanDongting Plain, Central China

采用成因、水文、植被、土质和地貌特征等，从系、类、属、种和亚种５个层次对江汉－洞庭平原的湿地进行了系统分类．划分了河流湿地、湖泊湿地和人工湿地３个湿地生态系统；河流水面、湖泊水面、人工水面、河流沼泽、湖泊沼泽和水田６个湿地类．还划分了９个湿地属、１８个湿地种和９个湿地亚种．利用卫星遥感影像对湿地进行了调查和制图，分析了湿地的分布特征，讨论了自然因素和人为因素对湿地分布的影响．

etlands in the JianghanDongting Plain were classified,according to their genesis, hydrolic properties, vegetation properties,characteristics of soil and landforms, into five levels. The first level is three wetland ecosystems ofriverine welland, lacustrine wetland and artificialwetland. The secondlevel has the six classes of water body and halfwater body in the three systems. The third level includes the nine types.The fourth level possesses 18 kinds and the fifth level has 9 subkinds. Based on the images of theremote sensing from Landsatelite, the survey and mapping were made on the wetland in this region. The distribution characteristics of wetlands were analysed. The natural and artificial factors whichcontrol the distribution were discussed.