基于MaxEnt与GIS的黄精生态适宜分布区研究

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中图分类号：Q948.13 文献标识码：A 文章编号：1007-0435（2025）05-1622-09

Abstract：To evaluate the distribution of the traditional Chinese medicine Polygonati Rhizoma in China and the main environmental factors affcting its distribution by means of ecological niche modellng，a total of 679 geographic locations of Polygonati Rhizoma distribution were collcted，and combined with 19 climatic and 4 topographic factors to simulate and analyze current and future habitat suitability by using MaxEnt algorithm and GIS technology，respectively. Currently，the total suitable area for Polygonati Rhizoma is 2142500km2 ， mainly including Zhejiang，Jiangxi，eastern Yunnan，southern Sichuan，Chongqing and Hunan. Under future climate scenarios，the centre of mass migration is located in southern Shaanxi，northern Henan and Shanxi provinces，and the areas of both its high suitable and more suitable zones show an expanding trend，while the area of low suitable zones decreases and then increases.The key environmental factors affcting the distribution of Polygonati Rhizoma were elevation（ 200-3000m ，mean temperature of driest quarter（ -5∘C～ 5∘C ），precipitation of the driest month （ 19-215mm ） and precipitation of the warmest quarter （480-1500 mm）.The MaxEnt model used in this study predicted accurate and reliable results （ .AUC=0.824 ，which provides a certain reference basis for the study of wild resources conservation and introduction of cultivation of Polygonati Rhizoma.

Key words：Polygonati Rhizoma ;MaxEnt;GIS;Ecological suitability;Climatic factor

中药黄精为百合科黄精属植物滇黄精（Polygonatum kingianum Coll. et Hemsl.）、黄精（P.sibiricum Red.）或多花黄精（P.cyrtonemaHua）的干燥根茎，味甘、性平，归脾、肺、肾经，具有补气养阴、润肺、健脾、益肾等作用。（剩余12611字）