基于地学信息图谱的漓江流域土地利用时空演变分析  

Spatio-Temporal Evolution of Land Use in Lijiang River Basin Based on Geo-Information TUPU

作　　者：杨淮深 胡金龙 青果 丘思程 胡安妮 YANG Huai-shen;HU Jin-long;QING Guo;QIU Si-cheng;HU An-ni(College of Tourism&Landscape Architecture,Guilin University of Technology,Guilin 541006,Guangxi,China)

机构地区：[1]桂林理工大学旅游与风景园林学院,广西桂林541006

出　　处：《西北林学院学报》2024年第4期154-162,共9页Journal of Northwest Forestry University

基　　金：国家自然科学基金项目(31960252,32260417);桂林理工大学科研启动基金(GLUTDG2008061);广西研究生教育创新计划项目(YCSW2023333)。

摘　　要：漓江流域是我国南方生态屏障的重要组成部分,也是喀斯特世界自然遗产保护地之一,生态环境脆弱,探究其土地利用变化特征及驱动力对土地资源合理利用至关重要。基于漓江流域1990、2000、2010、2020年4期遥感数据,综合运用地学信息图谱、主成分分析等方法,对土地利用演变及驱动力进行定量分析。结果表明,1990-2020年漓江流域主要的土地利用类型是林地和耕地,林地和建设用地持续增加,耕地不断减少,水域和草地波动减少,未利用地小幅增加;土地利用转移图谱以林地与耕地、草地之间相互转移以及建设用地占用耕地为主;1990-2000年主要图谱单元类型发生的变化最剧烈,涨势图谱中新增林地最大,落势图谱中耕地萎缩最大,各县区存在明显差异;经济活动尤其是旅游经济的壮大是导致流域土地利用变化的主要原因,人口变化与农业技术发展也是影响土地利用变化的重要因素。The Lijiang River Basin is an important part of the ecological barrier in Southern China and one of the protected areas of karst world natural heritage.The ecological environment of the basin is fragile.It is very important to study the characteristics and driving forces of land use change for the rational utilization of land resources in this area.Based on the remote sensing image data of the Lijiang River Basin in 1990,2000,2010,2020,this study comprehensively used the methods of geo-informatic spectrum and principal component analysis to quantitatively analyze the spatial and temporal changes and driving forces of land use in the basin.The results showed that the main land use structures in the basin from 1990 to 2020 were forest land and arable land.The forest land and construction land progressively increased,the arable land progressively decreased,the fluctuation of water area and grassland decreased,and the un-used land increased slightly.The land use transfer map was primarily based on the conversion between forest land and arable land,grassland and the arable land occupied by construction land.Among the three time series units,the main map unit types changed the most intensely from 1990 to 2000.The area of increased forest land in the land use rising trend map was the largest,and the area of shrinked arable land in the falling trend map was the largest.There were significant differences among counties and cities.The growth of economic activities,especially the tourism economy,is the main cause of land use change in the Lijiang River Basin.Population change and agricultural technology progress are also important factors in the change of land use types.

关 键 词：漓江流域 地学信息图谱 驱动力 土地利用变化 

分 类 号：S127[农业科学—农业基础科学]