Enrichment planting of native species for biodiversity conservation in a logged tree plantation in Vietnam
Enrichment planting of native species for biodiversity conservation in a logged tree plantation in Vietnam
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在越南砍伐的人工林中丰富种植本地物种以保护生物多样性
DOI：
10.1007/s11056-012-9344-6
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发表时间：
2013
期刊：
影响因子：
2.2
通讯作者：
Thị
中科院分区：
文献类型：
--
作者：
J. Millet;bullet N Tran;bullet N Vien;Ngoc bullet;T. Tran;Thi bullet;D. Prat;Á. D. Prat;N. Tran;Á. N. Vien Ngoc;Thị
在包括越南在内的许多国家，数十年的森林砍伐和过度砍伐造成了大片退化的土地。重新造林可能是在维持生物多样性保护的同时减轻这些退化过程的一种手段。然而，缺乏关于树木，特别是受威胁树种的资料已被确定为能够重新造林以保护生物多样性的一个重要限制。在目前的研究中，在Tan Phu“防护林”中进行，调查围绕着砍伐后快速生长的人工林生物多样性恢复的可行性。本文考虑了12种主要属于双龙心科和豆科的濒危和本地物种。在当地苗圃种植的幼苗被种植在50公顷的先锋森林的树冠下，植物之间和行之间的距离为5米。实验设计由块组成，每个块复制每个物种的16棵树的地块。种植后4年，除双果（Dipterocarpus costatus）幼苗成活率< 10%外，其余幼苗成活率均较高（约70%）。在封闭的林冠下，生长可能受到抑制，但平均年增长量总体上是令人满意的。幼苗的早期表现有望使该人工林成为生物多样性恢复的一个很好的例子。这些结果可以加强森林管理者的再造林努力，并鼓励他们使用本地树种，包括受威胁的树种，以便在热带退化森林中恢复高度的生物多样性。
Decades of deforestation and over logging have created large expanses of degraded lands in many countries including Vietnam. Reforestation may offer one means of mitigating these processes of degradation while sustaining biodiversity conservation. However a lack of information regarding trees, in particular threatened tree species has been identified as an important limitation in being able to reforest for biodiversity conservation. In the current study, conducted in the Tan Phu “protection forest”, the investigation surrounds the feasibility of biodiversity restoration in a fast-growing plantation after logging. Twelve threatened and native species mainly belonging to the Dipterocarpaceae and Fabaceae families have been considered. Seedlings grown in a local nursery have been planted under the canopy of a 50 ha pioneer forest, with a distance of 5 m between plants and between rows. The experimental design consists of blocks, each one with a replication of a 16-tree plot for each species. Four years after plantation, the survival rate of seedlings is high (>70 %), except for Dipterocarpus costatus (<10 %). Growth shows possible inhibitions under a closed canopy but the mean annual increment is generally satisfactory. The early performance of the seedlings is promising to make this plantation a good example of biodiversity restoration. These results could enhance the reforestation efforts of forest managers and encourage them to use native tree species including threatened ones in order to restore a high level of biodiversity in tropical degraded forests.