Drought-induced shifts in the floristic and functional composition of tropical forests in Ghana
Drought-induced shifts in the floristic and functional composition of tropical forests in Ghana
复制标题
DOI：
10.1111/j.1461-0248.2012.01834.x
复制
发表时间：
2012-10-01
期刊：
影响因子：
8.8
通讯作者：
Swaine, Michael D.
中科院分区：
文献类型：
--
作者：
Fauset, Sophie;Baker, Timothy R.;Swaine, Michael D.
在全球环境变化下，热带森林的未来是不确定的，如果降水情况发生变化，生物多样性和碳储存将受到威胁。在这里，我们评估的植物功能组成和生物量的变化，在20年的长期干旱在加纳的19个地块从各种森林类型。我们发现一个一致的增加，在干燥的森林，落叶，冠层物种与中间光的需求和随之而来的减少，在潮湿的森林，万年青，亚冠层和耐荫的物种。这些组成的变化伴随着地上生物量的增加。我们的研究结果表明，通过改变有利于耐旱物种的组成，这些森林的生物量股票可能更有弹性的长期干旱比短期研究严重的个人干旱建议。
The future of tropical forests under global environmental change is uncertain, with biodiversity and carbon stocks at risk if precipitation regimes alter. Here, we assess changes in plant functional composition and biomass in 19 plots from a variety of forest types during two decades of long-term drought in Ghana. We find a consistent increase in dry forest, deciduous, canopy species with intermediate light demand and a concomitant decrease in wet forest, evergreen, sub-canopy and shade-tolerant species. These changes in composition are accompanied by an increase in above-ground biomass. Our results indicate that by altering composition in favour of drought-tolerant species, the biomass stocks of these forests may be more resilient to longer term drought than short-term studies of severe individual droughts suggest.