云南红景天在云南省的资源现状及空间分布特征

Resource Status and Spatial Distribution Patterns of Rhodiola yunnanensis in Yunnan Province

  • 摘要: 为掌握云南红景天(Rhodiola yunnanensis)在云南省的野生资源现状,以县级行政区为基本单元,采用典型抽样法与核实法开展云南红景天系统调查。结果显示:该物种分布于13个州(市),总面积849.52 hm2,总株数305万余株;水平分布以滇西北大理州、迪庆州为核心;垂直分布集中于海拔2901—3800 m;生境以黄背栎林、急尖长苞冷杉林及紫花玉山竹灌丛为主,多呈草本层伴生种。53.37%的面积分布于自然保护地内,54.67%的株数分布于保护地外。主要干扰类型为"其它"与"采集",干扰强度以"无"和"弱"为主,保护状况总体优良。本研究系统调查了云南红景天在云南省的资源本底、分布格局与受威胁现状,为制定针对性保护措施提供基础数据。

     

    Abstract: To elucidate the current status of wild Rhodiola yunnanensisresources in Yunnan Province,a systematic field survey was conducted across the province using typical sampling coupled with verification,with county-level administrative units as the basic sampling element.The results indicated that R.yunnanensisis distributed across 13 prefecture-level cities/autonomous prefectures,covering a total area of 849.52 hm2 and an estimated total of over 3.05 million individuals.Horizontally,its distribution is centered in the northwestern part of Yunnan,specifically within Dali and Diqing Prefectures.Vertically,the species predominantly occurs at elevations ranging from 2900 to 3800 m.It primarily inhabits forests dominated by Quercus pannosa and Abies georgei var.smithii,as well as thickets of Yushania violascens,where it typically occurs as a companion species in the herbaceous layer.A total of 53.37% of the area lies within natural protected areas,while 54.67% of individuals occur outside them.Major disturbance types include "other" and "collection",mostly at "none" or "weak" intensity.The overall conservation status is excellent.This study provides a comprehensive baseline regarding the resource inventory,distribution patterns,and threat status of R.yunnanensisin Yunnan,thereby offering foundational data for formulating targeted conservation strategies.

     

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