中药材2024，Vol.47Issue(4)：857-862,6.DOI:10.13863/j.issn1001-4454.2024.04.010
基于MaxEnt模型的沙苑子潜在地理分布研究
Potential Geographical Distribution of Astragalus complanatus Based on MaxEnt Model
摘要
Abstract
Objective:To study the potential geographical distribution and change trend of Astragalus complanatus under the current and future climate change in different periods.Methods:The MaxEnt model,ENM Tools,R language and geographic information system(ArcGis)were used to predict the potential geographical distribution of Astragalus complanatus and its changes.Results:The MaxEnt model had good prediction accuracy(AUC value was 0.9306)after optimizing the combination of frequency doubling and feature combi-nation parameters.Under the current climate scenario,Astragalus complanatus were distributed in 21 provinces in China,including Northeast China,North China,Northwest China,Henan,Jiangsu,Sichuan.Under the future climate conditions of SSP1-2.6 and SSP5-8.5,the areas of Astragalus complanatus in the high-suitability,medium-suitability and low-suitability regions of China show an increas-ing trend,and its centroid migrates to the high-latitude and high-altitude regions.The centroid of Astragalus complanatus in SSP5-8.5 shows the largest range of centroid change and the longest migration trajectory.The main environmental factors are average annual tem-perature,precipitation in driest month,precipitation in wettest month,altitude,soil pH,etc.Conclusion:The results of this study can pro-vide scientific basis for the protection and utilization of medicinal plant resources of wild Astragalus complanatus in China and the for-mulation of planting layout.关键词
沙苑子/MaxEnt模型/主导环境因子/适生区Key words
Astragalus complanatus R.Br./MaxEnt model/Dominant environmental factors/Suitable area分类
中医学引用本文复制引用
蒋礼杰,王鑫钰,邱靖茹,吕玉玲,刘虎岐..基于MaxEnt模型的沙苑子潜在地理分布研究[J].中药材,2024,47(4):857-862,6.基金项目
2018年公共卫生服务补助资金专项"全国中药资源普查项目"(财社[2018]43号) （财社[2018]43号）
2019年医疗服务与保障能力提升补助资金项目"中医药事业传承与发展部分第四次全国中药资源普查项目"(财社[2019]39号) （财社[2019]39号）
