苔藓植物对植物天然更新的影响

种子是天然更新的基础,幼苗和幼树的生长是天然更新过程中最敏感的阶段。苔藓植物作为许多生态系统的主要地被物,在维管植物天然更新过程中发挥着不容忽视的作用。在许多植被类型中,都有发育良好的苔藓群落,大量的研究证明它们的存在影响到维管植物的萌发、建成和生长,并且可能进一步影响到物种的共生,有一些种类甚至可能指示树种的更新。本文就苔藓植物对物种更新早期阶段的作用和影响进行了综述。包括苔藓植物的生理特性造成的微气候变化;苔藓群落对种子传播、萌发及幼苗建成的影响。并讨论了苔藓植物与更新物种的种间关系及其对幼苗生长的化感作用。

Effects of bryophytes on plant natural regeneration

Seed is the foundation of plant natural regeneration,and the growth of seedlings and young trees is the most sensitive stage of this regeneration process.As the main ground cover of many ecosystems,bryophytes play an important role in the process of vascular plants' natural regeneration.In many vegetation types,there are bryophyte communities with good development.Many researches proved that the existence of bryophytes could affect the germination,build-up,and growth of vascular plants,and further,affect the symbiosis of plant species.Some bryophyte species could even indicate the regeneration of tree species.We reviewed the effects of bryophytes on the early stage of plant regeneration,including the microclimate changes induced by the physiological characteristics of bryophytes,and the effects of bryophyte communities on seed dispersal,seed germination,and seedlings establishment,and discussed the interspecific relationships between bryophytes and vascular plants in the stage of regeneration,and the allelopathy of bryophytes on vascular plants.