Litter and fine-root production in three types of tropical premontane rain forest in SE Venezuela

被引：0
作者：
Jörg Priess
Christiane Then
Horst Fölster
机构：
[1] Unversity of Göttingen,Institute for Soil Science and Forest Nutrition
来源：
Plant Ecology | 1999年 / 143卷
关键词：
Element concentration; Fine-root necromass; Oxisol; Root tips;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We investigated the productivity of three premontane primary forest sites in an extremely nutrient-poor environment on the Guyana shield in SE Venezuela. Aboveground litter production (total 5.58; leaves 4.30 Mg ha−1 year−1) was low, but comparable to other tropical forests. Due to the low nutrient status, net production of fine roots was among the highest ever reported (11.14 Mg ha−1 year−1). Only 20% of fine root stock was alive, 80% consisted of necromass. Similar values were obtained for dead and living root tips. Element concentrations in fine roots (including bio- and necromass), especially Ca, were low, whereas Al concentrations were relatively high.
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页码：171 / 187
页数：16
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