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      Restoring natural forests is the best way to remove atmospheric carbon

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          Natural regeneration as a tool for large-scale forest restoration in the tropics: prospects and challenges

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            Land-use emissions play a critical role in land-based mitigation for Paris climate targets

            Scenarios that limit global warming to below 2 °C by 2100 assume significant land-use change to support large-scale carbon dioxide (CO2) removal from the atmosphere by afforestation/reforestation, avoided deforestation, and Biomass Energy with Carbon Capture and Storage (BECCS). The more ambitious mitigation scenarios require even greater land area for mitigation and/or earlier adoption of CO2 removal strategies. Here we show that additional land-use change to meet a 1.5 °C climate change target could result in net losses of carbon from the land. The effectiveness of BECCS strongly depends on several assumptions related to the choice of biomass, the fate of initial above ground biomass, and the fossil-fuel emissions offset in the energy system. Depending on these factors, carbon removed from the atmosphere through BECCS could easily be offset by losses due to land-use change. If BECCS involves replacing high-carbon content ecosystems with crops, then forest-based mitigation could be more efficient for atmospheric CO2 removal than BECCS.
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              Four steps to food security for swelling cities

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                Author and article information

                Journal
                Nature
                Nature
                Springer Science and Business Media LLC
                0028-0836
                1476-4687
                April 2019
                April 2 2019
                April 2019
                : 568
                : 7750
                : 25-28
                Article
                10.1038/d41586-019-01026-8
                30940972
                © 2019

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