广西科学2024，Vol.31Issue(6)：1132-1143,12.DOI:10.13656/j.cnki.gxkx.20241207.008
漓江流域景观生态安全评价及其影响因素分析
Evaluation of Landscape Ecological Security and Analysis of Its Influencing Factors in the Lijiang River Basin
摘要
Abstract
The Lijiang River Basin,located in northeastern Guangxi,serves as a crucial ecological barrier.Ex-ploring the ecological security of the Lijiang River Basin is significant for maintaining regional sustainable de-velopment.However,the unique karst geological conditions render the eco-environment in the Lijiang River Basin fragile and sensitive,which,together with the long-term human activities,has led to a complex and dy-namic ecological security pattern in this region.Additionally,the influencing factors remain unclear.The land-scape index method was employed to assess the landscape ecological security pattern in the Lijiang River Ba-sin from 2000 to 2030.Random Forest(RF)models were used to analyze the effects of 29 factors involving climate,soil,and human activities on the evolution of the landscape ecological security pattern.The results in-dicated that from 2000 to 2020,the overall landscape ecological security level in the Lijiang River Basin ini-tially increased and then decreased.In a natural development scenario,the landscape ecological security level by 2030 is expected to keep declining,which,however,can be curbed in an ecological priority scenario.Spatial-ly,the northern and eastern regions exhibited better landscape ecological security than the western and south-ern regions.The landscape ecological security pattern in the Lijiang River Basin was influenced by multiple factors,including human activities,hydrology,climate,agriculture,and vegetation.Additionally,from 2000 to 2020,the influencing factors of the landscape ecological security pattern gradually shifted from topography,tourism,hydrology,and agricultural production to climate,population density,and vegetation.These findings provide scientific evidence for the ecological protection and sustainable development of the Lijiang River Ba-sin.关键词
漓江流域/生态安全/景观指数模型/时空变化/影响因素Key words
Lijiang River Basin/ecological security/landscape index model/spatiotemporal changes/influencing factors分类
资源环境引用本文复制引用
何文,余玲,王金叶,姚月锋,李宁,黄金君..漓江流域景观生态安全评价及其影响因素分析[J].广西科学,2024,31(6):1132-1143,12.基金项目
广西重点研发计划项目(AB22035060),广西自然科学基金项目(2024GXNSFAA010318),国家自然科学基金项目(32060369),广西植物研究所基本业务费项目(桂植业23005)和广西喀斯特植物保育与恢复生态学重点实验室自主研究课题(22-035-26)资助. （AB22035060）
