Publikationsdatum:
2008-02-09
Beschreibung:
Increasing energy use, climate change, and carbon dioxide (CO2) emissions from fossil fuels make switching to low-carbon fuels a high priority. Biofuels are a potential low-carbon energy source, but whether biofuels offer carbon savings depends on how they are produced. Converting rainforests, peatlands, savannas, or grasslands to produce food crop-based biofuels in Brazil, Southeast Asia, and the United States creates a "biofuel carbon debt" by releasing 17 to 420 times more CO2 than the annual greenhouse gas (GHG) reductions that these biofuels would provide by displacing fossil fuels. In contrast, biofuels made from waste biomass or from biomass grown on degraded and abandoned agricultural lands planted with perennials incur little or no carbon debt and can offer immediate and sustained GHG advantages.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fargione, Joseph -- Hill, Jason -- Tilman, David -- Polasky, Stephen -- Hawthorne, Peter -- New York, N.Y. -- Science. 2008 Feb 29;319(5867):1235-8. doi: 10.1126/science.1152747. Epub 2008 Feb 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Nature Conservancy, 1101 West River Parkway, Suite 200, Minneapolis, MN 55415, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18258862" target="_blank"〉PubMed〈/a〉
Schlagwort(e):
*Biomass
;
Brazil
;
Carbon
;
*Carbon Dioxide/metabolism
;
Crops, Agricultural
;
*Ecosystem
;
*Energy-Generating Resources
;
Greenhouse Effect
;
Indonesia
;
Malaysia
;
Plant Development
;
*Plants/metabolism
;
*Soil
;
Time Factors
;
United States
Print ISSN:
0036-8075
Digitale ISSN:
1095-9203
Thema:
Biologie
,
Chemie und Pharmazie
,
Informatik
,
Medizin
,
Allgemeine Naturwissenschaft
,
Physik
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