摘要
碱韭(Allium polyrhizum)是百合科(Liliaceae)、葱属(Allium)的一种多年生草本植物,具有重要的药用价值、食用价值和经济价值。基于筛选到的89个碱韭分布位点和9个环境因子,本研究利用优化后MaxEnt模型和ArcGIS软件,模拟了当前和未来气候条件下碱韭在我国的适宜区分布,旨在为碱韭种质资源的可持续利用提供基础数据。结果显示:(1)年平均温度(Bio1)、最干季平均温度(Bio9)、海拔(Elevation)和坡度(Slope)是影响碱韭在我国适宜区分布的主要环境因子;(2)当前气候条件下,碱韭的适宜区总面积为687.99×10^(4) km^(2),高适宜区主要分布于黑龙江、吉林西北部、新疆北部和内蒙古东北部,零星分布于西藏、青海、甘肃等地;(3)未来气候条件下,碱韭的适宜区分布面积大幅缩小,高适宜区主要集中于黑龙江北部和内蒙古东北部;适宜区质心总体向内蒙古东北方向迁移,但始终位于阿拉善右旗境内。
Allium polyrhizum is a perennial species from the genus Allium of the family Liliaceae,with important 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(Bio1),mean temperature of driest quarter(Bio9),elevation and slope were the main environmental factors influencing distribution area of A.Polyhizum(2)Under the current climatic conditions,the total suitable area of A.polyrhizum was 687.99×10^(4) km^(2),with highly suitable areas being mainly distributed in Heilongjiang,northwestern Jilin,northern Xinjiang and northeastern Inner Mongolia,and sporadically 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 northeast of 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.
作者
高宣琳
苏旭
刘玉萍
吕扬
雷洁琼
郑莹晖
才让扎西
冯旭
李佳欢
GAO Xuan-lin;SU Xu;LIU Yu-ping;LYU Yang;LEI Jie-qiong;ZHENG Ying-hui;CAIRANG Zha-xi;FENG Xu;LI Jia-huan(School of Life Sciences,Qinghai Normal University,Xining,Qinghai Province 810008,China;Key Laboratory of Biodiversity Formation Mechanism and Comprehensive Utilization of the Qinghai-Xizang Plateau in Qinghai Province,Qinghai Normal University,Xining,Qinghai Province 810008,China;Academy of Plateau Science and Sustainability,Qinghai Normal University,Xining,Qinghai Province 810016,China)
出处
《草地学报》
北大核心
2025年第8期2618-2626,共9页
Acta Agrestia Sinica
基金
青海省重大科技专项(2023-SF-A5)
2023年中央林业草原生态保护恢复资金野生动植物保护项目(QHSY-2023-016)
青海省省财政林业改革发展资金林草新技术推广项目(QSCZ-2023-001)资助。
关键词
碱韭
最大熵模型
环境因子
潜在适宜区
质心迁移
Allium polyrhizum
MaxEnt model
Potential suitable area
Environmental factor
Centroid transfer
