外来植物入侵对喀斯特乡土物种多样性影响研究进展  

Research Progress on the Impact of Alien Plant Invasion on Karst Native Species Diversity

作　　者：王世雄 张广奇 何跃军[1] Wang Shixiong;Zhang Guangqi;He Yuejun(College of Forestry,Guizhou University,Guiyang,Guizhou 550025,China)

机构地区：[1]贵州大学林学院,贵州贵阳550025

出　　处：《山地农业生物学报》2023年第1期40-45,共6页Journal of Mountain Agriculture and Biology

基　　金：贵州省自然科学基金项目(黔科合基础[2019]1060);贵州省教育厅青年科技人才成长项目(黔教合KY字[2018]098);贵州大学引进人才科研项目(贵大人基合字[2017]38)。

摘　　要：外来植物入侵导致了喀斯特生态系统的严重退化,遏制生态脆弱区外来植物入侵迫在眉睫。本研究解析了外来植物对喀斯特乡土物种多样性影响的过程,分析了外来植物在喀斯特生境中入侵的可能机制,提出将外来植物未入侵、入侵以及入侵种去除三种类型的群落整个到一个框架中,这可能是全面理解外来植物入侵过程的有效途径。基于此框架,在环境(包括资源的可利用性以及异质性)和入侵强度(梯度去除入侵种)梯度上,构建如上三种群落间的物种多样性关系,度量外来植物内禀优势和资源环境及其交互作用在外来植物入侵过程中的相对贡献,这应该是未来喀斯特生态脆弱区外来植物入侵预测和防治研究的重要方向。通过对喀斯特生态系统的外来植物入侵研究,不仅可以丰富入侵生态学的内容,而且可为其他生态脆弱区的外来物种入侵的影响评价和防治提供理论依据和实践指导。The invasion of alien plants has caused severe ecosystem degradation in the karst areas.It is urgent to control and reduce the invasion of alien plants in this ecologically fragile region.This study analyzed the process of the impact of exotic plants on the diversity of karst native species,analyzed the possible invasion mechanism of alien plants in karst habitats,and proposed an integrated framework for invaded,invasive removal,and non-invaded communities,which may improve the comprehensive understanding of the process of alien plant invasion.Based on this framework,along with environment(including availability and heterogeneity of resources)and invasion intensity gradient(gradient removal of invasive species),this paper constructed the relationship of species diversity among the above these three communities and measured the contribution of intrinsic advantage,resource availability,and their interaction to invasion,which could provide an important research direction in the future.The case study of alien plant invasion in the karst areas could not only enrich the content of invasion ecology,but also provide a theoretical basis and practical guidance for the impact assessment and prevention of alien plant invasion in other ecologically fragile areas.

关 键 词：外来物种 喀斯特生态脆弱区 物种多样性 物种去除 入侵强度 

分 类 号：Q948.1[生物学—植物学]