基于国土资源卫星的盐城海岸带生态环境变化调查

Eco-environmental changes in Yancheng coastal zone based on the domestic resource satellite data

海岸带作为海陆之间的过渡地带,是全球生态环境最为复杂和特殊之处,研究海岸带土地利用变化对于了解该区域生态环境演变具有重要意义.在遥感和GIS的技术支持下,利用2015年国土资源卫星数据获取盐城海岸带土地利用数据,并与2009年第二次全国土地调查数据成果进行对比分析,得到林地、草地、河流、养殖坑塘、盐田和沿海滩涂的基本动态变化情况.通过分析各生态单元的覆盖类型变化和产生变化的原因,对盐城沿海地区土地资源利用与保护等提出了4点建议,为盐城海岸带土地资源的合理开发利用及其生态环境保护提供科学依据.

The coastal zone as the transitional zone of ocean and continent is the place with most complex and special ecological environment. Research on land use changes is important for understanding eco-environmental changes in the coastal zone. Based on the domestic resource satellite data in 2015 and using RS and GIS techniques, the authors obtained land use data in Yancheng coastal zone. An analysis of and comparison with the data in the second national land survey in 2009 led to the obtaining of basic dynamic changes of grassland, forestland, river, fishery land, salt pan and coastal beach. Through the analysis of cover type changes of ecological units and their causes, four suggestions were put forward on land resources utilization and protection, with the purpose of providing scientific basis for rational exploitation and utilization as well as ecological environment protection of land resources in Yancheng coastal zone.