EFFECTS OF FOREST FLOOR ENVIRONMENT ON GERMINATION AND SEEDLING ESTABLISHMENT OF 2 BORNEAN RAIN-FOREST EMERGENT SPECIES
EFFECTS OF FOREST FLOOR ENVIRONMENT ON GERMINATION AND SEEDLING ESTABLISHMENT OF 2 BORNEAN RAIN-FOREST EMERGENT SPECIES
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DOI：
10.1017/s0266467400009068
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发表时间：
1995-11-01
影响因子：
1.4
通讯作者：
ITOH, A
中科院分区：
文献类型：
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作者：
ITOH, A
将芳香树和披针叶树（龙脑香科）的种子播种在婆罗洲雨林山脊和山谷的间隙和林下。无论地点和物种如何，发芽率均为 92-100%。在山脊上，由于根部对披针叶石斛的捕食程度较高，芳香石斛 (19-30%) 中打开初生叶的幼苗比例高于披针叶石斛 (7-19%)。另一方面，在山谷中，披针叶 D 的比例 (71-74%) 高于芳香 D 的比例 (56%)。初生叶产生后，两个物种的幼苗在间隙中的存活率均高于林下层中的存活率。讨论了捕食者、土壤条件和光环境之间的相互作用及其对幼苗生长的影响。
Seeds of Dryobalanops aromatica and D. lanceolata (Dipterocarpaceae) were sown in gaps and understorey on a ridge and a valley in a Bornean rainforest. Germination rates were 92-100% regardless of site and species. On the ridge, the proportion of seedlings that opened primary leaves was larger in D. aromatica (19-30%) than in D. lanceolata (7-19%) due to higher root predation on D. lanceolata. In the valley, on the other hand, the proportion was larger in D, lanceolata (71-74%) than in D, aromatica (56%). After primary leaf production, seedlings of both species had higher survivorship in the gaps than in the understorey. Interactions between predators, soil conditions and light environment and their effects on seedling establishment are discussed.