秦岭南北流域景观格局特征及脆弱性差异研究

Study on landscape pattern characteristics and vulnerabilitydifferences in north and south river basins of Qinling Mt

选择秦岭金钱河流域和灞河流域为研究对象,采用景观格局分析来评估流域生态状况、诠释生态过程。以2000年、2008年、2016年遥感影像为主要信息源,研究两流域土地利用状况和景观格局。结果表明,金钱河流域林地、未利用地、水域面积均有所增加,草地、建设用地、耕地减少;灞河流域林地、建设用地面积增加,未利用地、水域、耕地、草地均减少;从两流域的景观格局指数来看,金钱河水域发展的优势度越来越高,灞河水域发展的优势高于其他土地类型,2000年、2015年两流域景观破碎化程度有所减小,研究区发展更趋向于集中分布;两河流域的景观脆弱度空间分布及各等级分布形式均存在差异,景观脆弱度的高低与土地利用强度均相吻合。研究结果可为秦岭山地流域生态经济协调发展规划提供科学依据。

The Qinling Jinqian River Basin and Bahe River Basin were selected as the research objects,and landscape pattern analy⁃sis was used to evaluate the ecological status of the basin and interpret the ecological process.Based on the remote sensing images of 2000,2008 and 2016 as the main information sources,the land use status and landscape pattern of the two river basins were studied.The results showed that the area of forest land,unused land and water areas in the Jinqian River Basin increased,while grassland,construction land,and cultivated land decreased.The area of forest land and construction land in the Bahe River Basin increased,and unused land,waters,cultivated land,and grassland decreased.Judging from the landscape pattern index of the two river basins,the advantage of the Jinqian River waters development is getting higher and higher,and the advantage of Bahe waters development is high⁃er than other land types.In 2000 and 2015,the fragmentation of the landscape in the two river basins decreased,and the development of the study area tended to be concentrated.There are differences in the spatial distribution of landscape vulnerability and the distribu⁃tion of each level in the two river basins.The level of landscape vulnerability is consistent with the intensity of land use.The research results can provide a scientific basis for the coordinated development of eco-economic development in the Qinling Mountain Basin.