安庆沿江湿地景观格局变化及其驱动力

湿地具有重要的环境和生态功能，安庆沿江湿地自然保护区以其良好的自然性，正成为学术界关注的焦点和热点。基于1988、2006年两期TM遥感影像数据，借助于RS/GIS工具，获取安庆沿江湿地的景观斑块数据，运用Fragstats景观格局分析软件探讨了近20年来安庆沿江湿地景观格局的动态变化特征，研究结果表明：(1)安庆沿江湿地以湖泊和滩涂沼泽为主要景观类型；(2)研究期内湿地景观面积发生了较大幅度的缩减，各湿地景观类型间的动态变化较显著，以湖泊的萎缩变化最明显；(3)安庆沿江湿地景观在空间配置上趋于破碎和零散，景观斑块边界的复杂性程度和不规则程度在逐渐下降，形状趋于规整，景观类型结构和数量趋于均衡，景观斑块间连接程度有所降低。进一步探讨其驱动力因素，认为主要受到研究区内人口密度、农业开发活动、国家和区域政策法规以及湖区农户湿地环境保护意识等因素的影响。

CHANGES OF THE WETLAND LANDSCAPE PATTERN AND ITS DRIVEN FORCE ALONG THE YANGTZE RIVER IN ANQING,ANHUI PROVINCE

The wetland possesses very important environmental function and ecological benefits.Study on the Wetland Nature Reserve along the Yangtze River in Anqing has become a focus of academic community for its well nature.Based on the two phases of Landsat TM images in 1988 and 2006,the landscape patch data of the Wetland Nature Reserve along the Yangtze River in Anqing city was acquired by using the tools of remote sensing and geographical information system.Then it analyzed and explored the dynamic changes of th...