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浙江省环杭州湾产业带湿地时空动态

陆张维1;吴次芳1;岳文泽1;刘勇2;任丽燕1   

  1. 1浙江大学土地科学与不动产研究所, 杭州 310029;2西南大学资源环境学院, 重庆 400716
  • 收稿日期:2008-12-03 修回日期:1900-01-01 出版日期:2009-07-20 发布日期:2009-07-20

Spatiotemporal changes of wetlands in Hangzhou Bay Industrial Belt.

LU Zhang-wei1;WU Ci-fang1;YUE Wen-ze1;LIU Yong2;REN Li-yan1   

  1. 1Institute of Land Science and Real Estate, Zhejiang University, Hangzhou 310029, China;2College of Resources and Environment, Southwest University, Chongqing 400716, China
  • Received:2008-12-03 Revised:1900-01-01 Online:2009-07-20 Published:2009-07-20

摘要: 基于RS和GIS技术手段,采用土地利用动态变化的空间分析方法,对1990—2005年浙江省经济发展最活跃的环杭州湾产业带湿地的时空动态进行了研究.结果表明:研究期间,环杭州湾产业带内湿地与其他土地利用/覆被类型以及湿地内部地类之间的转化频繁,突出表现为湿地与农用地之间相互转化、建设用地占用湿地和杭州湾沿岸滩涂湿地转化为养殖水面;比较利益驱动和耕地占补平衡政策的双重影响,决定了环杭州湾产业带湿地时空动态的内在机制,即在水产养殖相对于传统农业的比较利益驱动下,大量内陆地区的农用地和杭州湾沿岸的滩涂湿地被开垦成养殖水面,而建设用地的迅速扩展、土地资源的紧张以及耕地占补平衡政策的实施导致湿地资源被侵占.

关键词: 景观格局, 土地覆被, 土壤侵蚀, 景观渗透指数

Abstract: By using RS and GIS techniques, the spatiotemporal changes of wetlands in Hangzhou Bay Industrial Belt, one of the most developed zones in Zhejiang Pr ovince, from 1990 to 2005 were studied. There was a frequent conversion between the wetlands and other land use types and between the wetlands themselves, mainl y manifested in the conversion between wetland and farmland, and from wetland to construction land and from tidal flat to aquiculture area. The comparative adva ntage of other land use types and the policy of cultivated land’s requisition- compensation balance decided the inherent mechanisms of these spatiotemporal cha nges. Driven by the aquaculture’s comparative advantage to traditional agricult ure, large areas of inland farmland and of the tidal flat along the coast of Han gzhou Bay were reclaimed into aquiculture area, and the rapid expansion of const ruction land, limited land resources, and the implement of cultivated land’s re quisition-compensation balance policy induced the wetlands being occupied.

Key words: landscape pattern, land cover, soil erosion, landscape leakiness index.