环境科学
温室气体
自然资源经济学
高峰时间
固碳
碳纤维
淘金热
减缓气候变化
全球变暖
气候变化
土地利用
环境保护
碳补偿
农业经济学
化石燃料
排放交易
业务
碳足迹
土地利用、土地利用的变化和林业
作者
Chuan Liao,Kerstin Nolte,J. Sullivan,Daniel G. Brown,Jann Lay,Christof Althoff,Arun Agrawal
出处
期刊:Nature food
[Springer Nature]
日期:2021-01-01
卷期号:2 (1): 15-18
被引量:11
标识
DOI:10.1038/s43016-020-00215-3
摘要
Global drivers and carbon emissions associated with large-scale land transactions have been poorly investigated. Here we examine major factors behind such transactions (income, agricultural productivity, availability of arable land and water scarcity) and estimate potential carbon emissions under different levels of deforestation. We find that clearing lands transacted between 2000 and 2016 (36.7 Mha) could have emitted ~2.26 GtC, but constraining land clearing to historical deforestation rates would reduce emissions related to large-scale land transactions to ~0.81 GtC. Large-scale land transactions can promote agricultural intensification but may be accompanied by negative socioeconomic and environmental consequences. Estimated carbon emissions from converting transacted lands to large-scale farms can reach up to 2.26 Gt, with the majority emitting from Africa, Southeast Asia, Latin America and Oceania; mitigation strategies are discussed.
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