Analysis of Dynamic Changes in Hengshui Lake Wetland Landscape Based on Geographical National Conditions Data
This article is based on three periods of geographical national conditions data from 2008,2014,and 2020 to extract wetlands for Hengshui lake nature reserve.On this basis,the changes in wetland area,type conversion and landscape index during three periods are analyzed.The research results indicate that wetland secondary classification extraction based on geographic national conditions data is successful and feasible.During the research period,the region was generally in an unbalanced state,the increase of wetland has fewer,river wetland and marshy wetlands has decreased,the lacustrine wetland and human-made wetland has some increase.The increase of lake wetlands and the decrease of swamp wetlands exhibit a complementary relationship.The overall regional landscape fragmentation increased,the average fraction decreased,the spatial structure is more complicated,but the amplitude is smaller,patch shapes tend to simple,landscape diversity and evenness decreased,dominance increase,the overall landscape pattern is relatively stable.
geographical national conditionswetlandlandscape pattern indexHengshui lake
万方数据
维普
