基于最大熵模型的藏药翼首草生态适宜性研究  

Potential distribution of the traditional Tibetan herb Pterocephalus hookeri by Maxent model

作　　者：唐策[1] 文检 张雯[1] 苏锦松[1] 谢彩香[2] 张艺[1] 

机构地区：[1]成都中医药大学民族医药学院,四川成都611137 [2]中国医学科学院北京协和医学院药用植物研究所,北京100193

出　　处：《中国中药杂志》2017年第10期1871-1876,共6页China Journal of Chinese Materia Medica

基　　金：国家自然科学基金面上项目(81274193);四川省教育厅省属高校科研创新团队建设计划项目(11TD004)

摘　　要：研究翼首草的生态适宜性,为翼首草GAP种植选址和区域发展提供参考。通过中国数字标本馆、文献和实地考察等收集67个翼首草分布点,利用Maxent和GIS技术对翼首草进行适宜性分析。发现翼首草潜在分布区域主要分布在西藏东部、四川西部、青海南部、云南西北部、甘肃南部;对翼首草生长和分布贡献率大的主要生态因子为海拔(62%)、最暖季风降水量(14.4%)、降水量变异系数(7.2%)、最干季度平均温度(3.5%)、土壤导电率(3%)、阳离子交换总量(2.4%)、温度季节性变化标准差(2.2%)。应用Maxent模型对翼首草进行生态适宜性研究,其准确度高,可为翼首草野生抚育及GAP种植选址提供科学依据和参考。In order to study the ecology suitability of Pterocephalus hookeri, and provide a reference for GAP planting location and regional development, the Maxent model and GIS technology were used to investigate ecology suitability regions for P. hookeri based on the distribution points collected from Chinese virtual herbarium, the references and field trips. The potential distribution areas mainly concentrated in the eastern Tibet, western Sichuan, southern Qinghai, northwest Yunnan, and southern Gansu. There were 7 major environmental factors to have obvious influence on ecology suitability distributions of P. hookeri, including altitude （contribution rate of 62%）, precipitation of warmest quarter （contribution rate of 14.4%）, coefficient of variation of precipitation seasonality （contribution rate of 7.2%）, mean temperature of driest quarter （contribution rate of 3.5%）, the electrical conductivity of top and sub-soil （contribution rate of 3%）, the total exchangeable bases in the top-and subsoil （contribution rate of 2.4%） and SD of temperature seasonality （contribution rate of 2.2%）. The study of the ecological suitability regionalization of P. hookeri based on Maxent model can provide scientific basis for the selection of artificial planting base and GAP planting location.

关 键 词：藏药 翼首草 Maxent模型 生态适宜性 

分 类 号：R29[医药卫生—民族医学] S567.239[医药卫生—中医学]