摘要
为掌握甘肃白龙江流域国家重点保护野生植物资源现状及分布规律,阐明植物地理区系构成,采用实测法和典型抽样法进行野外实地调查,结合查阅文献资料进行统计和分析。结果表明:(1)该流域天然分布的国家重点保护野生植物有19种,隶属于15科18属,其中国家Ⅰ级保护植物3种,国家Ⅱ级保护植物16种。(2)19种国家重点保护野生植物零散分布,主要集中在流域的下游和中游,分别占本区国家重点保护野生植物资源的95%和74%。(3)该流域植物区系复杂多样,科和属的区系大致划分为6种类型。研究认为,在甘肃白龙江流域天然分布的国家重点保护野生植物区系复杂多样,呈现出以温带为主、热带向暖温带过渡且中国特有成分丰富的特征。大部分物种分布范围狭窄,种群稀少,生境要求特殊,不利于种群的扩散和繁殖。
In order to understand the resources and floristic characteristics of national key protected wild plants in Bailongjiang basin,we surveyed wild plant resources in the study area by field measurement method and typical sampling method.The research data was analyzed combining with literature review.The results show that:(1) there are 19 national key protected plants,which belong to 15 families and 18 genera,including3 species of the national protection category I and 16 species of the national protection category II;(2) the national key protected wild plants have no concentrated distribution in the study area and mainly scatter in the lower and middle reaches of the basin,accounting for 95% and 74% of the total national key protection wild plants of the this area,respectively;(3) the floristic characteristics of the wild plants in Bailongjiang basin are complex and diverse,and the floristic geography of plant family and genera can basically be divided into 6distribution types.This study indicates that the floristic geography of wild plants in Bailongjiang basin is mainly temperate,showing a transition from tropical zone to warm temperate zone,and has abundant unique Chinese components.Most species have narrow distribution range,rare populations and special habitat requirements,which are not conducive to the diffusion and reproduction of plant populations.
作者
赵焕新
张继强
车宗菊
谈嫣蓉
刘世增
陈文业
林琳
ZHAO Huanxin;ZHANG Jiqiang;CHE Zongju;TAN Yanrong;LIU Shizeng;CHEN Wenye;LIN Lin(Gannan Forestry Technology Integrated Service Center,Hezuo,Gansu 747000;Gansu Research Academy of Forestry Science,Lanzhou 730020;National Positioning Observation and Research Station of West Lake Wetland Ecosystem in Dunhuang,Dunhuang,Gansu 736200;Bailongjiang Institute of Forestry Science of Gansu Province,Lanzhou 730070)
出处
《中国农学通报》
2023年第22期91-95,共5页
Chinese Agricultural Science Bulletin
基金
科技支撑计划项目资助“大熊猫国家公园(白水江片区)草地资源专项调查及生态功能评估”(GYCX[2020]02)。
关键词
甘肃省
白龙江流域
国家重点保护野生植物
区系地理
Gansu Province
Bailongjiang basin
national key protected wild plants
floristic geography
