原始分布数据、环境变量和 R 代码

This study utilized extensive specimen data and detailed geographic and environmental information, applying the MaxEnt model to predict the distribution of <i>F. cirrhosae</i> bulbus. The key findings are as follows: (1) <i>F. przewalskii</i> and <i>F. delavayi</i> tend to migrate to higher altitudes, while<i> </i><i>F. taipaiensis</i><i> </i>is shifting to lower altitudes. (2) Among different species of <i>F. cirrhosae</i> bulbus, altitude, temperature, and precipitation significantly influence distribution, with altitude being the most critical factor. (3) Under the SSP585 scenario, the suitable areas of <i>F. cirrhosa</i>, <i>F. przewalskii,</i> and <i>F. taipaiensis</i> were contracting, while those of <i>F. unibracteata</i> and<i> </i><i>F. delavayi</i> were rising. Also, the centroids of <i>F. cirrhosa</i> and<i> </i><i>F. przewalskii</i> shifted slightly northeastward, <i>F. unibracteata</i>’s shifted southward, and <i>F. delavayi</i> and <i>F. taipaiensis</i>’s shifted northwestward.