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生态学杂志 ›› 2022, Vol. 41 ›› Issue (10): 1991-1997.doi: 10.13292/j.1000-4890.202208.018

• 研究报告 • 上一篇    下一篇

药用植物云南土沉香潜在适生区及其关键气候影响因子

王志威*   

  1. (贵州中医药大学药学院, 贵州道地药材灵芝种质资源开发及栽培技术研究中心, 贵阳 550002)
  • 出版日期:2022-10-10 发布日期:2022-10-12

The potential suitable areas and key climatic impacting factors of medicinal plant Excoecaria acerifolia Didr.

WANG Zhi-wei*   

  1. (College of Pharmacy, Germplasm Resources Development and Cultivation Technology Research Center of Guizhou Genuine Medicinal Materials Ganoderma Lucidum, Guizhou University of Traditional Chinese Medicine, Guiyang 550002, China).

  • Online:2022-10-10 Published:2022-10-12

摘要: 基于中国西南地区河谷药用植物云南土沉香(Excoecaria acerifolia Didr.)的82条地理分布信息与67个气候因子,利用MaxEnt最大熵模型和ArcGIS,分析了该物种的潜在适生区及其关键气候因子。结果表明:云南土沉香的潜在适生区主要位于我国西南部的东喜马拉雅、横断山区以及四川盆地的河谷流域,其中,云南和四川省境内的横断山区河谷为该物种的核心分布区;4月份降水量、年温度变化范围、温度季节性变化系数、1月份最低温和12月份最高温为影响云南土沉香分布的关键气候因子,其中,4月份降水量尤为关键,贡献率占42.29%。当存在概率>0.5时,以上因子的范围分别为:49~95 mm、23~28 ℃、450~700、-5~5 ℃以及7.5~13 ℃。本研究结果与云南土沉香的分布记载基本一致,可为中国西南地区特殊生境干热/干暖河谷药用植物种质资源调查、保护以及开发利用等提供一定的依据。


关键词: 云南土沉香, 适生区, 关键气候因子, 最大熵模型, 地理信息系统

Abstract: Based on the information of 82 geographical distribution locations of Excoecaria acerifolia Didr. in river valleys of Southwest China and 67 climatic factors, I analyzed the potential suitable areas and key climatic factors of E. acerifolia using Maximum Entropy (MaxEnt) and ArcGIS. The results showed that the potential suitable areas of E. acerifolia are mainly located in river basins of the eastern Himalayas, Hengduan Mountains, and Sichuan Basin of Southwest China, with the river basins of Hengduan Mountains in Yunnan and Sichuan Provinces as the core distribution areas. Precipitation of April, temperature annual range, temperature seasonality, minimum temperature of January, and maximum temperature of December are the key climatic factors affecting the potential distribution of E. acerifolia. Among those factors, precipitation of April is particularly critical, with a contribution rate of 42.29%. When the probability of presence of E. acerifolia is higher than 0.5, the ranges of the above five factors are: 49-95 mm, 23-28 ℃, 450-700, -5-5 ℃ and 7.5-13 ℃, respectively. Our results are basically  consistent with the distribution records of E. acerifolia, and can offer certain basis for the investigation and protection of germplasm resources, development and utilization of medicinal plants in the dry hot/warm river valleys, a special habitat of Southwest China.


Key words: Excoecaria acerifolia, suitable area, key climatic factor, Maximum Entropy, geographic information system.