欧洲的森林管理没有缓解气候变暖
Kim Naudts1, Yiying Chen1, Matthew J McGrath1
1Laboratoire des Sciences du Climat et de l'Environnement-Institut Pierre Simon Laplace, Commissariat à l'Énergie Atomique et aux Énergies Alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint Quentin, Université Paris-Saclay, 91191 Gif-sur-Yvette, France.
概括
欧洲森林由于木材开采而积累了大量的碳负债, 目前的森林管理实践并没有降温气候,
科学领域:
- 气候科学
- 森林生态
- 环境科学
背景情况:
- 森林植被和森林管理是广泛接受的减缓气候变化策略.
- 欧洲自1750年以来的历史森林管理做法正在审查其实际气候影响.
研究的目的:
- 量化自1750年以来欧洲森林管理,包括植树和木材开采对气候的影响.
- 评估植树和物种转换在辐射失衡和温度变化中的作用.
主要方法:
- 分析自1750年以来欧洲森林中碳的积累和损失.
- 树林管理实践所导致的辐射失衡和大气边界层温度变化的建模.
主要成果:
- 由于木材开采,欧洲森林的碳负债超过了植树带来的好处.
- 植树增加了0.12W/m2的辐射失衡,而物种转换主要导致夏季边界层温度上升0.12K.
- 总体而言,欧洲两半世纪以来的森林管理并没有导致气候变冷.
结论:
- 目前的植树和森林管理策略可能无法有效缓解气候变化.
- 意识到并非所有林业活动都能减缓气候变化,对于制定有效的政策至关重要.
- 需要重新评估欧洲的森林管理实践,以符合气候降温目标.
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