【作者】 关文彬； 吴建安； 梁广林； 王棒； 马克明； 刘国华； 汪西林；

【Author】 GUAN Wenbin~(1)),WU Jian’an~(1)),LIANG Guanglin~(1)),WANG Bang~(1)), MA Keming~(2)),LIU Guohua~(2)) and WANG Xilin~(1)) 1) Soil and Water Conservation Key Lab.of State Forestry Administration,Beijing Forestry University,Beijing 100083; 2) Research Center for Eco-Environment Sciences,CAS,Beijing,100085)

【机构】 北京林业大学水土保持部级重点实验室； 中国科学院生态环境研究中心；

【摘要】 岷江源区位于四川盆地的西北部,该地区气候比较干燥,再加上人为活动的影响,造成了植被的不断退化,使本来就比较脆弱的生态系统出现退化的趋势,因此为恢复或重建当地脆弱的生态系统进行植被类型的划分和研究有着重要的意义。沿岷江源区河谷(流域—海拔梯度)剖面线设置"U"或"M"形样带三条,对植被和环境因子进行了调查,共计73个样方316个物种,创建样地—物种数据库,应用TWISPAMN植被数量分类方法进行分类,并根据中国植被的分类原则和样地物种组成特征,建立了岷江源区植被分类系统,将岷江源区的植被类型划分为29个群丛,12个群系:冷杉林、云杉林、柳灌丛、窄叶鲜卑花灌丛、绣线菊灌丛、锦鸡儿灌丛、小果小檗灌丛、沙棘灌丛、苔草草甸、蒿草草甸、白茅草甸和亚高山草甸。更多还原

【Abstract】 The headwater area of the Minjiang River is located in the western Sichuan Basin. For the comprehensive reasons,the climate is becoming dry and the vegetation is becoming worse,in addition to the human’s activities,the deteriorating trend is showing in the local fragile ecosystem.Studying the types of vegetation is of much great significance to restore or reconstruct the local degrading ecosystems.According to the gradient of the altitude in the headwater area of the Minjiang River,three transects of vegetation were settled to investigate the vegetation and its environments.Then we established two databases of the sites and species.The vegetation of the headwater area of the Minjiang River was classified with the quantitative method of TWINSPAN,the results of quantitative classification were adjusted artificially according to the classifying principles of Vegetation of China,and the classification system of the vegetation in the headwater area of the Minjiang River was set up.The vegetation was classified into 29 associations,12 formations.The details are described as follows: Coniferous forest sub-type:Form.Abies faxoniana,Form.Picea asperata. Deciduous broadleaf shrubs sub-type:Form.Salix spp.,Form.Sibiraea angustata, Form.Spiraea spp.,Form.Caragana spp.,Form.Berberis amurensis,Form.Hippophae rhamnoides. Hygropium type:Form.Carex spp.,Form.Kobresia spp.,Form.Imperata cylindrica,Form.Meadow.更多还原