摘要
通过实验研究探讨了西双版纳几类热带森林的土壤种子库与地上植被的关系．结果表明，在森林演替的初期，土壤种子库与地上植被共有的种类和种子储量较多，随着林龄的增大，外来种子的比例逐渐增加，到季节雨林阶段，土壤种子库中的种子大部分为来自群落外的先锋种类．这些种子在郁闭的林冠下很难萌发，一旦森林受到干扰出现林窗或空旷地，这些潜在的种源将迅速萌发。
The relationship
between soil seed bank and aboveground vegetation in several tropical forests of
Xishuangbanna was studied by experimental method. The results show that at the initial
succession stage of forest, there were more species of soil seed bank common with its
aboveground vegetation and their seed storage, but the proportion of seeds from exotic species
was gradually increased with increased forest age. The seeds in soil seed bank at mature
forest stage were mostly from pioneering species outside of the communities, which would
hardly germinate under closed canopy. But, when forest gaps or opens occured after the forests
disturbed, these seeds would germinate rapidly, and play an important role in vegetation
restoration or succession.
出处
《应用生态学报》
CAS
CSCD
1999年第3期279-282,共4页
Chinese Journal of Applied Ecology
基金
中国科学院"九五"重点项目
云南省基金
关键词
次生演替
土壤种子库
热带森林
Secondary succession, Soil seed bank, Tropical forest.
