通过移除或加强基于牧场的牛肉生产来捕获碳的机会
Matthew N Hayek1, Johannes Piipponen2, Matti Kummu2
1Department of Environmental Studies, New York University, New York, NY 10003.
概括
从牧场移除牲畜可以扣留大量的碳,对全球牛肉生产的影响最小. 在某些地区加强生产可以完全弥补损失,平衡气候缓解和粮食安全.
科学领域:
- 生态生态学 生态生态学
- 气候科学 气候科学
- 农业科学 农业科学
背景情况:
- 牧场覆盖地球三分之一的土地,支持反动物牲畜.
- 从牧场移除牲畜可以通过碳捕获来缓解气候变化.
- 这代表了环境效益与食品/纤维生产之间的权衡.
研究的目的:
- 全球评估碳捕获和牧场牛肉生产之间的权衡的规模和分布.
- 以5弧分分辨率量化牧场的"碳机会强度".
主要方法:
- 在移除牲畜时对碳捕获潜力的全球评估.
- 对全球牛肉生产的影响分析.
- 模拟潜在的生产强化,以抵消损失.
主要成果:
- 从高碳密度牧场移除牛可以扣留34 (2243) GtC (125158 GtCO2),超过最近的全球化石二氧化碳排放.
- 这导致全球牧场牛肉生产13% (918%) 的轻微损失,集中在高收入国家.
- 同时在低碳密度地区加强牛肉生产可以充分补偿全球生产损失.
结论:
- "碳机会强度"框架有助于生态系统恢复和尽量减少食物损失的政策.
- 牛肉生产的战略强化可以平衡气候目标与粮食安全.
- 需要进一步的研究以进行地方规模的估计和更广泛的环境指标集成.
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