树木多样性在亚热带针叶树林发展期间对地面生物质的树木大小依赖的影响
Yu Zhu1,2, Chen Wang1,2, Jiajia Wang1,2
1School of Ecology and Environment, Central South University of Forestry and Technology, Changsha, 410004, China.
Carbon balance and management
|January 20, 2026
概括
这项研究揭示了树木多样性和生物质在一个世纪以来如何在森林中共同发展. 结构多样性,特别是胸高直径 (DBH) 变化,显著影响生物多样性和生态系统功能 (BEF) 关系,对碳捕集策略至关重要.
科学领域:
- 生态生态学 生态生态学
- 森林科学 森林科学 森林科学
- 生态系统动力学 生态系统动力学
背景情况:
- 生物多样性和生态系统功能 (BEF) 关系对于森林管理至关重要,但树木多样性和生物质的长期共同进化仍未得到充分研究.
- 现有的研究主要集中在短期森林发展 (≤50年),在了解长期动态方面存在知识差距.
研究的目的:
- 研究亚热带针叶树林中树木多样性和地表生物质的长期共同进化.
- 改进以多样性为基础的管理策略,以加强森林长期碳封存.
主要方法:
- 利用生态系统人口学模型 (ED-2.2) 模拟大约一个世纪 (2004-2100) 的森林属性.
- 评估植物功能类型 (PFT) 多样性,结构多样性 (DBH指标),地面生物质库存 (AGBS) 和地面生物质生产 (AGBP).
- 经过验证的模型输出与森林库存观察.
主要成果:
- PFT多样性显示了U形轨迹,而结构多样性显示了形模式.
- 地上生物质库存 (AGBS) 和生产 (AGBP) 呈现明显的上升,然后下降的趋势.
- 生物多样性和生态系统功能 (BEF) 关系随着时间的推移而普遍加强,DBH结构多样性指标 (SD和Gini) 显示出最强的显著关系.
结论:
- 一个世纪以来,树木多样性和地表生物量显著共同发展,结构多样性发挥着关键作用.
- 平均树木大小是比树密度更有影响力的BEF关系驱动因素.
- 结果强调了树木大小依赖的过程对长期BEF关系的重要性,并为碳捕获提供了森林管理的信息.
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