森林消灭对热带雨林碳平衡的影响
Jedediah F Brodie1,2, Carolina Bello3, Carine Emer4
1Division of Biological Sciences and Wildlife Biology Program, University of Montana, Missoula, Montana, USA.
概括
动物种群对森林碳储存产生影响,热带雨林的碳排放减少了碳排放. 将动物动态纳入气候模型对于有效的保护和减缓战略至关重要.
科学领域:
- 生态生态学 生态生态学
- 气候科学 气候科学
- 保护生物学 保护生物学
背景情况:
- 全球碳循环模型传统上侧重于植被.
- 动物可能会显著影响碳动态,可能会增强基于自然的气候变化缓解.
- 动物活动,植物群落和生态系统碳之间的确切联系仍然不清楚,特别是在生物多样性的热带雨林中.
研究的目的:
- 探索热带雨林中动物数量减少和生态系统碳储存之间的复杂相互作用.
- 综合当前关于动物种群变化如何影响森林碳动态的研究.
- 评估碳封存和气候变化缓解战略上的破坏影响.
主要方法:
- 对热带雨林 (新热带地区,非洲热带地区和亚洲地区) 的脱落和生态系统碳现有研究的审查.
- 分析如何改变种子散布, granivory,和草食影响树种组成和森林碳.
- 局部效应的推断,以估计生态系统规模的碳损失.
主要成果:
- 在新热带和非洲热带森林中,消灭植物通常会减少0-26%的碳储存,主要是由于大种子,动物分散的树木的减少.
- 亚洲森林没有显示出预测的碳储存变化,原因是风分散的高碳树.
- 预计在主要热带森林盆地 (亚马逊,刚果) 中,在十年到百年时间范围内,碳损失将显著.
结论:
- 动物种群在调节热带森林碳储存方面发挥着至关重要的,但往往被忽视的作用.
- 脱对碳的影响高度取决于环境,受物种相互作用和环境因素的影响.
- 将动物动态纳入碳循环模型对于准确的气候变化评估和有效的保护政策至关重要.
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