基于地理国情数据的衡水湖湿地景观动态变化分析  

Analysis of Dynamic Changes in Hengshui Lake Wetland Landscape Based on Geographical National Conditions Data

作　　者：梁世文 孙洁芳 梁京源 LIANG Shiwen;SUN Jiefang;LIANG Jingyuan(Hebei Provincial Natural Resources Information Center,Shijiazhuang 050031,China)

机构地区：[1]河北省自然资源信息中心,河北石家庄050031

出　　处：《河北地质大学学报》2024年第5期38-42,69,共6页Journal of Hebei Geo University

摘　　要：基于2008年、2014年、2020年3期地理国情数据,以衡水湖自然保护区为例进行湿地提取,并分析3个时期湿地面积变化、类型转换及景观格局指数的变化。研究结果表明,基于地理国情数据对湿地二级类的提取是成功可行的。研究期内区域总体处于不平衡状态,湿地有较少的增加,其中河流湿地、沼泽湿地有所减少,湖泊湿地、人工湿地有部分增加。湖泊湿地的增加与沼泽湿地的减少呈现互补关系。区域整体景观破碎度增加,面积加权平均分维数减少,空间结构趋于复杂,斑块形状趋于简单,但幅度均较小,景观多样性、均匀度减少,优势度增加,整体景观格局相对比较稳定。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.

关 键 词：地理国情 湿地 景观格局指数 衡水湖 

分 类 号：P96[天文地球—自然地理学]