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Limited potential for terrestrial carbon sequestration to offset fossil‐fuel emissions in the upper midwestern US
Author(s) -
Fissore Cinzia,
Espeleta Javier,
Nater Edward A,
Hobbie Sarah E,
Reich Peter B
Publication year - 2010
Publication title -
frontiers in ecology and the environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.918
H-Index - 164
eISSN - 1540-9309
pISSN - 1540-9295
DOI - 10.1890/090059
Subject(s) - carbon sequestration , environmental science , carbon offset , greenhouse gas , carbon dioxide , offset (computer science) , fossil fuel , atmospheric carbon cycle , environmental protection , waste management , ecology , geology , oceanography , computer science , engineering , biology , programming language
Many carbon dioxide (CO 2 ) emission‐reduction strategies currently under consideration rely on terrestrial carbon (C) sequestration to offset substantial proportions of CO 2 emissions. We estimated C sequestration rates and potential land areas for a diverse array of land‐cover changes in the Upper Midwest of the US, a “best case” region for this study because of its relatively modest CO 2 emissions and the large areas of cropland potentially available for conversion. We then developed scenarios that apply some of the most widespread mitigation strategies to the region: the first, which aimed to offset 29% of regional CO 2 emissions, required the unrealistic loss of two‐thirds of working cropland; the second, which estimated the emission offset attainable by conversion of 10% of harvested croplands (5.8% of the US total), resulted in <5% CO 2 emissions reduction for the region (<1.1% of total US emissions). There is limited capacity for terrestrial C sequestration, so strategies should aim to directly reduce CO 2 emissions to mitigate rising atmospheric CO 2 concentrations.

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