浙江天童常绿阔叶林演替过程的凋落物现存量

Standing Crops of the Iitterfall in the Succession Series of Evergreen Broad-leaved Forest in Tiantong,Zhejiang Province.

凋落物现存量是土壤表层的死有机物质，由尚未分解、半分解和已分解的凋落物组成，它是森林生态系统腐屑食物链的起点，有机碳和营养元素的储库，为生态系统的运转过程提供物质和能量［３，９］；同时，它也能创造幼苗定居环境的异质性［８］。因此，研究演替过程凋落物现...

The standing crops of the litterfall in the succession series of evergreen broad-leaved forest in Tiantong, Ningbo,Zhejiang Province were compared in this paper.The results showed that the standing crops of litters and duffs in the communities dominated by Pinus massoniana were relatively high at early stage during the course of succession and those of the broad-leaved forest communities increased as succession proceeded. Similarly, those of humus in the succession series distinctly increased and the total standing crops of the litterfall as well as the rates of decomposition of the litterfall also increased. It exhibited the similar variation pattern with annual litterfall amounts, implying that succession could promote the biological cycling. Furthermore, the variation pattern of the components of litters and duffs during the succession courses were also compared and analysed.