摘要
外来植物多花黑麦草的入侵对陕西、河南、江苏、四川等地的农业生产造成了严重危害。为构建多花黑麦草入侵风险预警,利用主成分分析模型和最大熵模型对多花黑麦草在入侵中国后的生态位分化及在中国的入侵阶段进行分析。结果表明,多花黑麦草在入侵我国后发生了显著的生态位漂移;相比于其原产地种群,多花黑麦草在中国的入侵种群生态位宽度更广,适应的气候区显著扩展;在当前气候条件下,中国南方大部分区域属于多花黑麦草的稳定入侵区,而北方和西部地区存在其局域适应区和潜在拓殖区。研究结果反映出多花黑麦草在我国东中部大部分地区具有较高的入侵潜力,也暗示了多花黑麦草较高的生态位进化能力可能是其在我国广泛入侵的重要原因。研究结果为开展多花黑麦草的防控和治理提供了重要研究基础。
The invasion of the alien invasive plant Lolium multiflorum Lam.has caused severe damage to agricultural production in regions such as Shaanxi,Henan,Jiangsu and Sichuan provinces in China.In order to construct an early warning of the invasion risk of Lolium multiflorum Lam.,PCA-ENV and MaxEnt models were used to analyze the niche shift and invasion stage of Lolium multiflorum Lam.after invasion in China.The results showed that Lolium multiflorum Lam.underwent a significant niche shift after the invasion in China.Compared with its native population,the invasive population of Lolium multiflorum Lam.in China showed a wider niche width and a significant expansion of the adapted climatic zones.Under current climatic conditions,the majority of areas in southern China belong to the stable invasion zone,whereas the colonization zone and adaptation zone are existed in northern and western China.The results of this study indicate that Lolium multiflorum Lam.has a high invasive potential in most areas of east-central China,and its strong ecological niche evolution capabilities are critical factors contributing to its widespread invasion in China.The results of this study provide an important research basis for undertaking prevention,control and management measures against Lolium multiflorum Lam.
作者
陈瑜
杨毅哲
陈丽丽
宋兴江
李欣迪
张献瑞
史岩
王佳
宋雅琪
刘刚
CHEN Yu;YANG Yizhe;CHEN Lili;SONG Xingjiang;LI Xindi;ZHANG Xianrui;SHI Yan;WANG Jia;SONG Yaqi;LIU Gang(School of Life Sciences,Shaanxi Normal University,Xi'an 710119,Shaanxi,China;Farmland Quality and Agricultural Environment Protection Workstation of Shaanxi Province,Xi'an 710003,Shaanxi,China)
出处
《陕西师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2024年第1期70-78,共9页
Journal of Shaanxi Normal University：Natural Science Edition
基金
国家自然科学基金(32271584)
陕西省自然科学基础研究计划(2020JM-286)
陕西省哲学社会科学研究专项(2022HZ1795)
中央高校基本科研业务费(GK202103072)
陕西省科协决策咨询课题
西安市科协决策咨询课题(202113)。
