Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, 739-8521, Japan.
Forest Research Institute of Malaysia, 52109, Kepong, Selangor, Malaysia.
Sci Rep. 2018 Jan 18;8(1):1024. doi: 10.1038/s41598-018-19250-z.
Selective logging that is commonly conducted in tropical forests may change tree species diversity. In rarely disturbed tropical forests, locally rare species exhibit higher survival rates. If this non-random process occurs in a logged forest, the forest will rapidly recover its tree species diversity. Here we determined whether a forest in the Pasoh Forest Reserve, Malaysia, which was selectively logged 40 years ago, recovered its original species diversity (species richness and composition). To explore this, we compared the dynamics of secies diversity between unlogged forest plot (18.6 ha) and logged forest plot (5.4 ha). We found that 40 years are not sufficient to recover species diversity after logging. Unlike unlogged forests, tree deaths and recruitments did not contribute to increased diversity in the selectively logged forests. Our results predict that selectively logged forests require a longer time at least than our observing period (40 years) to regain their diversity.
选择性砍伐通常在热带森林中进行，可能会改变树种多样性。在很少受到干扰的热带森林中，当地稀有的物种表现出更高的存活率。如果这个非随机过程发生在被砍伐的森林中，森林将迅速恢复其树种多样性。在这里，我们确定了马来西亚帕索森林保护区（Pasoh Forest Reserve）的一片森林，这片森林在 40 年前进行了选择性砍伐，它是否恢复了其原始的物种多样性（物种丰富度和组成）。为了探索这一点，我们比较了未砍伐森林地块（18.6 公顷）和砍伐森林地块（5.4 公顷）之间物种多样性的动态。我们发现，40 年时间不足以在砍伐后恢复物种多样性。与未砍伐的森林不同，树木死亡和新种植的树木并没有促进选择性砍伐森林中多样性的增加。我们的研究结果预测，选择性砍伐的森林至少需要比我们的观测期（40 年）更长的时间来恢复其多样性。
