中药山慈菇基原物种生态适宜性关键生态因子及区划研究

Key Environment Factors and Regionalization of the Ecological Suitability of the Original Species of Chinese Medicine Cremastrae Pseudobulbus/Pleiones Pseudobulbus

目的为山慈菇基原物种科学引种和选址扩种提供理论基础。方法通过查询多个数据库和实地调查,收集山慈菇基原物种在全国范围内的257个有效分布数据。综合海拔、温度、太阳辐射、降雨量和水汽压5个类别共68个生态因子,利用Maxent和ArcGIS对山慈菇基原物种的生态适宜性进行分析。结果分析得到影响山慈菇生态适宜性的关键生态因子主要是降雨量、太阳辐射以及海拔,不同基原物种间关键生态因子有显著差异。最适宜杜鹃兰、独蒜兰以及云南独蒜兰生长的潜在区域分别集中在台湾、华南地区以及云南四川相接一带。结论本研究进一步对其潜在分布区分别进行了生态适宜性等级划分,为山慈菇合理引种栽培及人工规范化扩种提供科学依据。

Objective In order to offer a theoretical foundation for Cremastae Pseudobulbus/Pleiones Pseudobulbus original species scientific introduction and site selection for expansion.Methods We gathered sample distribution information for the original species of Cremastae Pseudobulbus/Pleiones Pseudobulbus nationwide by consulting various databases and conducting field investigations.A total of 257 effective distribution data were gathered.Altitude,temperature,solar radiation,precipitation,and water vapor pressure were among the 68 environment factors that were chosen from 5 categories.The ecological suitability of Cremastae Pseudobulbus/Pleiones Pseudobulbus original species was investigated using Maxent and ArcGIS.Results The investigation revealed that precipitation,solar radiation,and altitude were the core environment factors influencing the ecological suitability of Cremastae Pseudobulbus/Pleiones Pseudobulbus.The most important environment factors varied significantly between diverse original species.The most suitable potential areas for the growth of Cremastra appendicutata,Pleione bulbocodioides,and Pleione yunnanensis were concentrated in Taiwan,South China,and the adjacent areas of Yunnan and Sichuan,respectively.Conclusion Further ecological suitability levels were classified for their potential distribution areas,providing a scientific basis for the rational introduction,cultivation,and artificial stanhbzyydxdardized expansion of the Cremastae Pseudobulbus/Pleiones Pseudobulbus.