唇形科苣叶鼠尾草的新分布及适生分布区预测  

New Record of Salvia sonchifolia(Lamiaceae)and Prediction of Its Suitable Distribution Areas

作　　者：罗广令 顾丽 廖海民[1] 胡国雄[1] LUO Guangling;GU Li;LIAO Haimin;HU Guoxiong(College of Life Sciences, Guizhou University, Guiyang, 550025, China;Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region,Collaborative Innovation Center for Mountain Ecology&Agro-Bioengineering,College of Life Sciences/Institute of Agro-bioengineering,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学生命科学学院,贵阳550025 [2]贵州大学农业生物工程研究院,山地植物资源保护与保护种质创新教育部重点实验室,山地生态与农业生物工程协同创新中心,贵阳550025

出　　处：《西北植物学报》2021年第3期501-508,共8页Acta Botanica Boreali-Occidentalia Sinica

基　　金：国家自然科学基金(32060048,31600164)。

摘　　要：在野外调查的基础上,报道了苣叶鼠尾草在贵州和广西的省级新分布。基于苣叶鼠尾草16个分布数据和11个环境因子参数,运用最大熵(MaxEnt)模型对其适生分布区进行预测,并通过受试者工作特征(receiver operating characteristic,ROC)曲线对模型精度进行验证。结果表明:(1)ROC曲线下面积(AUC)均值为0.999,模型预测结果准确性较高,适合苣叶鼠尾草的潜在适生区预测。苣叶鼠尾草的适生区主要分布于中国西南地区以及与中国南部相邻国家的部分地区。核心适宜区集中在中国滇黔桂、四川东部和滇东南中越边境的石灰岩山区。(2)刀切法(Jackknife)检测结果表明,影响苣叶鼠尾草适生分布区的主要环境因子包括:最暖季降水量、最冷月最低温、平均气温日较差以及最冷季降水量等。适生区环境因子的统计分析结果显示,苣叶鼠尾草适宜生长在最暖季降水量650~1500 mm、最冷月最低温0~10℃、平均气温日较差6.5~8.5℃、最冷季降水量0~250 mm的地区。研究结果可为苣叶鼠尾草的资源调查和相关研究提供有利依据。Based on field investigations,we reported the new distributions of Salvia sonchifolia in Guizhou and Guangxi Province.On the basis of 16 distribution records and 11 environmental factor parameters,the MaxEnt model was applied to predict the suitable distribution areas of S.sonchifolia.The accuracy of the model was verified by Receiver Operating Characteristic Curve(ROC).The results showed that:(1)the mean value of the area under ROC curve was 0.999,and the accuracy of the model was high,suggesting its feasibility of predicting potential suitable areas of S.sonchifolia.The suitable distribution areas of S.sonchifolia were mainly located in Southwestern China and parts of countries adjacent to Southern China.The core suitable areas were concentrated in the limestone mountainous areas of Yunnan,Guizhou,Guangxi,Eastern Sichuan,and the China-Vietnam border in southeastern Yunnan.(2)Jackknife test indicated that the main environmental factors determining the potential distribution areas of S.sonchifolia were precipitation of warmest season,mean temperature of driest season,precipitation of wettest month and lowest temperature of coldest month.Statistical analysis of the environmental factors related to the potential distribution demonstrated that the most appropriate habitat conditions for S.sonchifolia were precipitation of warmest quarter from 650 mm to 1500 mm,lowest temperature of coldest month from 0℃to 10℃,mean diurnal range of temperature from 6.5℃to 8.5℃and precipitation of coldest quarter from 0 mm to 250 mm.This study will be helpful for resource survey and related study of S.sonchifolia.

关 键 词：苣叶鼠尾草 新记录 潜在适生区 MaxEnt模型 东亚鼠尾草亚属 

分 类 号：Q948.11[生物学—植物学] Q948.3