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| Titel |
Quantifying regional, time-varying effects of cropland and pasture on vegetation fire |
| VerfasserIn |
S. S. Rabin, B. I. Magi, E. Shevliakova, S. W. Pacala |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 12, no. 22 ; Nr. 12, no. 22 (2015-11-19), S.6591-6604 |
| Datensatznummer |
250118169
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| Publikation (Nr.) |
 copernicus.org/bg-12-6591-2015.pdf |
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| Zusammenfassung |
| The global extent of agriculture demands a thorough understanding of the ways
it impacts the Earth system through the modification of both the physical and
biological characteristics of the landscape as well as through emissions of
greenhouse gases and aerosols. People use fire to manage cropland and pasture
in many parts of the world, impacting both the timing and amount of fire. So
far, much previous research into how these land uses affect fire regimes has
focused on either individual small regions or global patterns at annual or
decadal scales. Moreover, because pasture is not mapped globally at high
resolution, the amount of fire associated with pasture has never been
quantified as it has for cropland. The work presented here resolves the
effects of agriculture – including pasture – on fire on a monthly basis for
regions across the world, using globally gridded data on fire activity and
land use at 0.25° resolution. The first global estimate of
pasture-associated fire reveals that it accounts for over 40 % of annual
burned area. Cropland, generally assumed to reduce fire occurrence, is shown
to enhance or suppress fire at different times of year within individual
regions. These results bridge important gaps in the understanding of how
agriculture and associated management practices influence vegetation fire,
enabling the next generation of vegetation and Earth system models more
realistically incorporate these anthropogenic effects. |
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