reference : Carbon stored in human settlements: The conterminous United States

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Bibliographic fields
reftype Journal Article
Abstract Urban areas are home to more than half of the world's people, responsible for >70% of anthropogenic release of carbon dioxide and 76% of wood used for industrial purposes. By 2050 the proportion of the urban population is expected to increase to 70% worldwide. Despite fast rates of change and potential value for mitigation of carbon dioxide emissions, the organic carbon storage in human settlements has not been well quantified. Here, we show that human settlements can store as much carbon per unit area (23–42 kg C m−2 urban areas and 7–16 kg C m−2exurban areas) as tropical forests, which have the highest carbon density of natural ecosystems (4–25 kg C m−2). By the year 2000 carbon storage attributed to human settlements of the conterminous United States was 18 Pg of carbon or 10% of its total land carbon storage. Sixty-four percent of this carbon was attributed to soil, 20% to vegetation, 11% to landfills, and 5% to buildings. To offset rising urban emissions of carbon, regional and national governments should consider how to protect or even to increase carbon storage of human-dominated landscapes. Rigorous studies addressing carbon budgets of human settlements and vulnerability of their carbon storage are needed.
Author Churkina, G. Brown, D.G. Keoleian, G.
DOI 10.1111/j.1365-2486.2009.02002.x
ISSN 1365-2486
Issue 1
Journal Global Change Biology
Keywords building;; carbon storage;; landfill;; urban area
Pages 135-143
Title Carbon stored in human settlements: The conterminous United States
Volume 16
Year 2010
Bibliographic identifiers
.reference_type 0
_chapter ["Ch. 13: Land Use and Land Cover Change FINAL"]
_record_number 184
_uuid 3f2ba8d9-8e8d-4290-ae93-86e35e1a5e19