博尔内亚热带森林正在从伐木中恢复,面临再生失败的风险
David C Bartholomew1,2,3, Robin Hayward4,5, David F R P Burslem6
1School of Geography, University of Exeter, Exeter, UK.
Global change biology
|March 12, 2024
概括
积极的森林恢复可以增加最初的苗木数量,但与长期的生存和多样性作斗争. 目前的方法可能无法克服砍伐森林的再生障碍,影响未来的植物群落.
科学领域:
- 热带生态 热带生态
- 林业科学 林业科学
- 恢复生态恢复生态学
背景情况:
- 砍伐的森林往往需要积极的恢复才能恢复.
- 林业治疗对森林再生的长期有效性仍然不太清楚.
- 种子生产和后代的生存对于森林恢复至关重要.
研究的目的:
- 评估伐木和积极恢复对苗木再生的长期影响.
- 为了比较未伐木,自然再生和积极恢复的伐木森林中的苗木多样性,生存和特征.
- 确定积极的恢复是否会随着时间的推移增强苗木招募和社区多样性.
主要方法:
- 在北婆罗洲的未伐木 (UL),自然再生 (NR) 和积极恢复 (AR) 森林中,监测了幼苗密度和生存时间约1.5年.
- 对来自15个物种的399个个体测量了14个苗木特征 (叶子,根,生物质分配).
- 分析了与森林类型和恢复状态有关的社区组成和特征环境关系.
主要成果:
- 积极恢复 (AR) 和未伐木森林 (UL) 的初始苗木密度高于自然再生 (NR) 森林.
- 在AR森林中,在最初的6个月内,苗木存活率最低.
- 与UL森林相比,AR和NR森林的物种丰富性和均性较低,AR和NR之间没有显著差异.
- 与UL森林相比,NR森林的社区加权平均根生物质分配在NR森林中更高.
- 在AR森林中,收购性特征和地面投资受到青,影响死亡率.
结论:
- 积极恢复可以增加初始苗木产量,但不能保证增强长期招募或多样性.
- 在积极恢复的森林中增加的苗木死亡率表明当前做法存在局限性.
- 伐木后再生的长期滞后以及招募的潜在障碍仍然存在,可能会改变未来的森林组成.
关键词:
人口学 人口学 人口学干扰是一种干扰.多样性的多样性多样性的多样性果实生长 果实生长 果实生长功能特征 功能特征 功能特征总的说来,这是一个通用杆.低地热带森林 低地热带森林死亡率 死亡率恢复 恢复 恢复选择性采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐采伐相关概念视频
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