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通过对四川山矾Symplocos setchuensis幼树不同龄级叶片比叶面积(S)与叶片干物质质量分数(L)在毛竹Phyllostachys pubescens林向常绿阔叶林演替不同阶段下的变化动态进行研究,探索四川山矾幼树在毛竹林演替下时间和空间的适应规律.结果显示:1随着毛竹林向常绿阔叶林演替的进行,四川山矾幼树叶片的S随之增加,而L随之减小;2在相同的生境条件下,随着四川山矾幼树叶片龄级的不断增加,叶片S具有一定的减小趋势,而L却有所增加;3不同演替阶段中,四川山矾幼树叶片S与L始终呈负相关关系,且1龄叶的负相关性最高.本研究揭示了竹林演替下四川山矾幼树叶片S与L在时间和空间上的变化规律,为进一步研究四川山矾和其他常绿阔叶树种在竹林演替中的适应性变化提供依据.
The dynamic changes of specific leaf area (S) and leaf dry matter mass fraction (L) at different stages of succession of Phyllostachys pubescens forest to evergreen broad-leaved forest in Sichuan Symplocos setchuensis were studied. The results showed that: 1 With the succession of Phyllostachys pubescens to evergreen broad-leaved forest succession, the S of S. bungeanum leaves increased along with the succession, While L decreased along with it; 2 With the increasing of the age of the young tree species, the leaf S had a decreasing trend and L increased under the same habitat conditions; 3 different succession stages , There was a negative correlation between leaf S and L at all times and the highest negative correlation at the first instar leaf.The results showed that the S and L of the Spartina alterniflora saplings under the succession of bamboo forest in time and space And provide the basis for further study on the adaptability of Asclepiadaceae and other evergreen broad-leaved species in the succession of bamboo forest.