中国中药杂志

2015, v.40(14) 2792-2795

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基于Maxent生态位模型预测药用真菌猪苓在中国潜在适生区
Habitat suitability assessment of medicinal Polyporus umbellatusin China based on Maxent modeling

刘蒙蒙;邢咏梅;郭顺星;
LIU Meng-meng;XING Yong-mei;GUO Shun-xing;Institute of Medicinal Plant Development,Chinese Academy of Medical Sciences,Peking Union Medical College;

摘要(Abstract):

从中国12个省采集到猪苓40个分布数据,结合Worldclim网站上1950—2000年生物气候数据,用最大信息熵模型模拟猪苓潜在的地理分布。结果表明经ROC曲线分析法验证,Maxent生态位模型的AUC值为0.959,表明预测地理分布有一定的准确性。依据模拟分布值0.5~0.8标定的猪苓分布区域,排除其潜在分布区域,再结合这些区域的地理间隔性,从宏观景观上将猪苓的地理分布格局划分为3个区块:黑龙江、吉林、辽宁、河北4省小部分地区;云南、贵州、四川3省交界地区,西藏的东南部地区;山西大部分地区,陕西大部分地区,陕西与甘肃、宁夏交界的东南部。刀切法检测表明,温暖季节平均降雨量对猪苓的分布增益贡献最大,其次依次最干季度平均温度为及年平均温。该研究反映出了猪苓在中国基本的地理分布格局以及潜在分布区域,为猪苓的生境保护以及资源引种提供了理论依据。
Geographic distribution of Polyporus umbellatuswas predicted by using distribution records. Based on 42 distribution records from 12 provinces and bioclimatic data( 1950—2000),georaphic distribution of P. umbellatus was modeled using Maxent. The results showed thatthe Receiver Operating Characteristic( ROC) curve analysis method was used to assess the accuracy of MAXENT model and the area under ROC curve( AUC) value of MAXENT was 0. 960 which suggested that the result of assessment was dependable. The geographic distribution pattern of were divided into three distribution block based on distribution values of 0. 5-0. 8: small area of Heilongjiang,Jilin,Liaoning and Hebei province,the board area of Yunnan,Guizhou and Sichuan,the southeast area of Tibet and the most area of Shanxi and Shannxi,the southeast board area of Shannxi,Gansu and Ningxia. Jackknife Test showed that average precipitation in warm seasons had the greatest contribution to the distribution gain of P. umbellatus,followed by mean temperature of driest quarter and annual mean temperature. The object suggests the potential distribution areasof P. umbellatus which is useful for the habitat conservation and introduction of P. umbellatus.

关键词(KeyWords): 猪苓;Maxent;潜在分布;预测
Polyporus umbellatus;Maxent;habitat suitability assessment;prediction

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基金项目(Foundation): 国家自然科学基金项目(30830017,31201666)

作者(Author): 刘蒙蒙;邢咏梅;郭顺星;
LIU Meng-meng;XING Yong-mei;GUO Shun-xing;Institute of Medicinal Plant Development,Chinese Academy of Medical Sciences,Peking Union Medical College;

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