湿地土地利用覆盖变化研究——以鄱阳湖湿地为例

Study on the Change of Land Use Coverage in Wetlands——Taking Poyang Lake Wetland as an Example

本文对2015年12月,2016年3月、7月、9月、12月的遥感影像进行监督分类,得到土地利用覆盖数据,采用RS以及土地利用净变化量、交换变化量、总变化量分析方法,定量分析了2016年鄱阳湖湖滩的土地利用覆盖变化。结果表明,遥感影像监督分类的Kappa均大于0.90,满足数据的要求。年内鄱阳湖湖滩的土地利用覆盖呈现周期性变化:从3月到9月随着水量的增加,部分河湖滩地、沼泽转变为内陆水体;从9月到12月随着水量减少,部分水体转变为河湖滩地和沼泽。本文为鄱阳湖湖滩土地覆盖变化的深入研究奠定了基础。

This paper supervises and classifies the remote sensing images in December 2015, March, July, September and December 2016, and obtains land use coverage data. Using RS and the net change in land use, exchange change, and total change analysis method, the land use cover change of the Poyang Lake beach in 2016 was quantitatively analyzed. The results show that the Kappa of the remote sensing image supervised classification is greater than 0.90, which meets the data requirements. During the year, the land use coverage of the Poyang Lake beach showed a cyclical change： from March to September, with the increase of water volume, some rivers and lakes and swamps were transformed into inland water bodies; from September to December, as the amount of water decreased, some of the water bodies were transformed into rivers and lakes and swamps. This paper lays a foundation for the in-depth study of the land cover change of Poyang Lake beach.