Contrasting taxonomic and functional responses of a tropical tree community to selective logging
Contrasting taxonomic and functional responses of a tropical tree community to selective logging
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DOI：
10.1111/j.1365-2664.2012.02164.x
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发表时间：
2012-08-01
影响因子：
5.7
通讯作者：
Sabatier, Daniel
中科院分区：
文献类型：
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作者：
Baraloto, Christopher;Herault, Bruno;Sabatier, Daniel
1.关于在多大程度上可以为资源开采而管理热带森林，同时保护取决于功能组成的生物多样性和生态系统特性，存在着相当多的争论。在这里，我们评估这些目标的兼容性，通过研究在热带森林的分类和功能多样性和组成的影响。2.选择性采伐20年后，我们清点了4140干再生采伐间隙和邻近的未受干扰的地区，我们整合了一个数据库的13个功能性状描述叶和木材经济的热带树木。3.我们没有发现栖息地之间的分类和功能丰富度的差异，但采伐林隙有显着较高的分类和功能的均匀度。4.伐木还影响了物种和功能组成的显著的长期变化。特别是，在采伐间隙新兵的木质部密度比未采伐的森林少6%，叶片的坚韧低11%，有613%的矿物质营养浓度。5.合成与应用。我们的研究结果表明，热带森林的管理者应限制整体表面积转换为采伐间隙，创造更少，更大的差距在选择性采伐，以减少对更新的立场的分类和功能组成的影响。
1. Considerable debate surrounds the extent to which tropical forests can be managed for resource extraction while conserving biodiversity and ecosystem properties, which depend on functional composition. Here we evaluate the compatibility of these aims by examining the effects of logging on taxonomic and functional diversity and composition in a tropical forest. 2. Twenty years after selective logging, we inventoried 4140 stems regenerating in logging gaps and adjacent undisturbed areas, and we integrated a database of 13 functional traits describing leaf and wood economics of tropical trees. 3. We found no differences in taxonomic and functional richness among habitats, but logging gaps had significantly higher taxonomic and functional evenness. 4. Logging also effected striking, long-term changes in both species and functional composition. In particular, the xylem density of recruits in logging gaps was 6% less than in unlogged forests, leaves were 11% less tough and had 613% greater mineral nutrient concentrations. 5. Synthesis and applications. Our results suggest that managers of tropical forests should limit overall surface area converted to logging gaps by creating fewer, larger gaps during selective logging, to reduce impacts on the taxonomic and functional composition of the regenerating stand.