喀斯特森林草本植物谱系多样性的驱动因素  

Drivers of Herbaceous Plants Phylogenetic Diversities in Karst Forests

作　　者：肖梓波 邓伟 毛艳娇[1] 张潮 金毅[1,2] 汤晓辛 Xiao Zibo;Deng Wei;Mao Yanjiao;Zhang Chao;Jin Yi;Tang Xiaoxin(School of Life Sciences,Guizhou Normal University,Guiyang 550025,China;Key Lab.of National Forestry and Grassland Administration on Biodiversity Conservation in Karst Mountainous Areas of Southwestern China,Guizhou Normal University,Guiyang 550025,China;Key Lab.of Plant Physiology and Developmental Regulation,Guizhou Normal University,Guiyang 550025,China)

机构地区：[1]贵州师范大学生命科学学院,贵州贵阳550025 [2]贵州师范大学西南喀斯特山地生物多样性保护国家林草局重点实验室,贵州贵阳550025 [3]贵州师范大学贵州省植物生理与发育调控实验室,贵州贵阳550025

出　　处：《中国野生植物资源》2023年第5期93-98,共6页Chinese Wild Plant Resources

基　　金：贵州省科学技术基金(黔科合基础[2020]1Z013);国家自然科学基金委员会-贵州省人民政府喀斯特科学研究中心项目(U1812401)。

摘　　要：目的:探讨森林草本植物多样性格局及驱动因子,可加深对森林生物多样性的认识。方法:针对贵州普定县42个喀斯特森林样地内草本被子植物和蕨类植物,探讨生境条件、空间和人类活动对两类草本植物谱系多样性格局的影响。结果:(1)草本被子植物谱系α多样性随人类活动增强而减小,蕨类植物谱系α多样性随坡位上升而减小;(2)两类草本植物谱系β多样性均随空间距离增大而增大,草本被子植物谱系β多样性还随人类活动增强而变化。结论:草本被子植物和蕨类植物谱系多样性的驱动因素有差异,前者受人类活动威胁,后者受生态位和空间过程控制。Objective:Exploring the patterns and drivers of herbaceous plant diversity in karst forests to deepen the understanding of forest biodiversity.Methods:Aiming at herbaceous angiosperms and pteri-dophytes in 42 karst forest plots in Puding County,Guizhou,investigating the effects of habitat condi-tions,geographical distance and human activities on the genealogical diversity patterns of the two types of herbaceous plants were discussed.Results:(1)The phylogeneticαdiversity of herbaceous angio-sperms declined with the intensification of human activities,while the phylogeneticαdiversity of pteri-dophytes decrease with the elevation of slope position.(2)The phylogeneticβdiversity of both herba-ceous increased with geographical distance,and the phylogeneticβdiversity of herbaceous angio-sperms was also related to the intensity of human activities.Conclusion:The driving factors of the phylo-genetic diversities of herbaceous angiosperms substantially differ from pteridophytes,in which the for-mer were under the threat of human activities,whereas the latter were mainly shaped by niche and spa-tial processes.

关 键 词：蕨类植物 被子植物 谱系多样性 草本层 生态位 

分 类 号：Q948[生物学—植物学]