广西植物2026，Vol.46Issue(4)：575-585,11.DOI:10.11931/guihaia.gxzw202604012
基于新一代中国植被图(1∶50万)方法的漓江流域植被类型与分布
Vegetation types and distribution in the Lijiang River basin based on the new generation 1∶500 000 China vegetation map compilation method
摘要
Abstract
The Lijiang River basin,located in a typical karst region of southern China,has an ancient stratigraphic origin and a long history of karst development.It harbors diverse and spatially complex vegetation alliance types.However,high-resolution distribution data at the alliance level have been lacking.Based on the new generation 1∶500 000 China vegetation map compilation method,which integrates crowdsourced vegetation data,multi-source remote sensing fusion,and multi-scale image segmentation,this study identified the major vegetation alliance types(or alliance groups)in the Lijiang River basin and analyzed their area composition and spatial distribution patterns.The results were as follows:(1)The vegetation types exhibited high diversity and complexity.A total of 4 vegetation formation groups,10 vegetation formations,and 23 alliances(groups)were identified.(2)Anthropogenically influenced vegetation types accounted for more than 87％of the basin's area.Specifically,Pinus massoniana forest,P.massoniana mixed needleleaf and broadleaf forest,Cunninghamia lanceolata forest,and Phyllostachys edulis forest together occupied over 61％of the basin,while agricultural vegetation(food crops and orchards)covered approximately 26％.In contrast,primary zonal evergreen broadleaf forests(e.g.,Castanopsis eyrei forest and C.carlesii forest)together comprised less than 5％of the total basin area.(3)Clear spatial differentiation patterns were observed among alliances.Zonal alliances were strictly confined to non-karst mountains(e.g.,Yuechengling,Haiyangshan,Jiaqiaoling),whereas non-zonal alliances(e.g.,Cyclobalanopsis glauca mixed evergreen and deciduous broadleaf forest,Vitex negundo+Loropetalum chinense shrubland)dominated the karst areas.Vertically,a distinct altitudinal zonation was evident,transitioning from typical evergreen broadleaf forest belt to mixed evergreen and deciduous broadleaf forest belt.Horizontally,forest alliances mainly occupied the surrounding mountainous regions,whereas shrubland and agricultural alliances prevailed in the central gentle terrain.This study reveals the classification,area composition,and spatial distribution patterns of vegetation alliances in the Lijiang River basin,providing a scientific basis and supporting evidence for the conservation and restoration of the basin's vegetation ecosystems,as well as for sustainable development of the basin and the assessment of its ecological value.关键词
漓江流域/喀斯特/众源采集/多尺度影像分割/植被型/群系/面积组成/空间分布Key words
the Lijiang River basin/karst/crowdsourced/multi-scale image segmentation/vegetation formation/alliance/area composition/spatial distribution分类
农业科技引用本文复制引用
向悟生,王斌,胡天宇,陆芳,陶旺兰,李冬兴,李健星,李先琨..基于新一代中国植被图(1∶50万)方法的漓江流域植被类型与分布[J].广西植物,2026,46(4):575-585,11.基金项目
广西重点研发计划项目(桂科AB22080057) （桂科AB22080057）
中国科学院战略性先导科技专项(XDA19050401). （XDA19050401）
