基于MaxEnt模型预测碱韭在中国的潜在适宜区变化

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中图分类号：Q949.9 文献标识码：A 文章编号：1007-0435（2025）08-2618-09

doi：10.11733/j.issn.1007-0435.2025.08.022

Abstract：Allium polyrhizum isa perennial species from the genus A lium of the familyLiliaceae，with impor tant medicinal，edible and economic values.Based on eighty-nine distribution sites and nine environmental factors screened，we simulated the suitable distribution area of A . polyrhizum in China under current and future climatic conditions，through the optimized MaxEnt model and ArcGIS software in the present study. This study provides the basic data for the sustainable utilization of A . polyrhizum germplasm resources. The results indicated that（1） The annual average temperature（Biol），mean temperature of driest quarter（Bio9），elevation and slope were the main environmental factors influencing distribution area of A .Polyhizum（2）Under the cur rent climatic conditions，the total suitable area of A . polyrhizum was 687.99×104km2 ，with highly suitable areas being mainly distributed in Heilongjiang，northwestern Jilin，northerm Xinjiang and northeastern Inner Mongolia，and sporadicall in Xizang，Qinghai，Gansu，etc.（3） Under the future climatic conditions，the suitable distribution area of A . polyrhizum reduced obviously，and the highly suitable area was mainly concentrated in the north of Heilongjiang and northeastof Inner Mongolia.Besides，the centroid of the suitable area generally would migrate to the northeast of Inner Mongolia，but it is always located in Alxa Right Banner.

Key Words：Allium polyrhizum;MaxEnt model;Potential suitable area;Environmental factor;Centroid transfer

碱韭（Alliumpolyrhizum）是百合科（Liliaceae）葱属（Alium）的一种多年生草本植物，主要分布于我国新疆、青海、甘肃、内蒙古、宁夏等地，通常生长于海拔 1000～3700m 的向阳山坡或草地上[1]。（剩余11271字）