Consulta: subjectFacets:"Biomass burning"
Registros recuperados: 2
Data/hora: 16/06/2024 11:49:35

Assessment of Biomass Burning in the Conterminous United States
Provedor de dados: 7
Autores: Leenhouts, Bill; U. S. Fish and Wildlife Service; Bill_Leenhouts@.fws.gov.
Wildland fire has been an integral part of the landscape of the conterminous United States for millennia. Analysis of contemporary and pre-industrial (~ 200 - 500 yr BP) conditions, using potential natural vegetation, satellite imagery, and ecological fire regime information, shows that wildland fires burned 35 - 86 x 106 ha (megahectares) annually in the pre-industrial era, consuming 530 - 1230 teragram (Tg) of biomass. At present, in comparison, 5 - 7 Mha/yr burn, consuming 77 - 189 Tg of biomass annually. If historic fire regimes were restored to non-urban and non-agricultural lands today, 18 - 43 Mha would burn annually, consuming 285 - 602 Tg of biomass. For each era, 11 biomass (wildland and agricultural) burning emissions were estimated, and...
Tipo: Peer-Reviewed Reports
Palavras-chave: Air quality; Biomass burning; Climate change; Conterminous United States; Emission estimates; Fire regimes; Pre-industrial conditions; Prescribed burning; Wildland fire.
Ano: 1998

Combining charcoal and elemental black carbon analysis in sedimentary archives: Implications for past fire regimes, the pyrogenic carbon cycle, and the human-climate interactions
Provedor de dados: 5
Autores: Thevenon, Florian; Williamson, David; Bard, Edouard; Anselmetti, Flavio S.; Beaufort, Luc; Cachier, Helene.
This paper addresses the quantification of combustion-derived products in oceanic and continental sediments by optical and chemical approaches, and the interest of combining such methods for reconstructing past biomass burning activity and the pyrogenic carbon cycle. In such context, the dark particles &gt;0.2 mu m(2) remaining after the partial digestion of organic matter are optically counted by automated image analysis and defined as charcoal, while the elemental carbon remaining after thermal and chemical oxidative treatments is quantified as black carbon (BC). The obtained pyrogenic carbon records from three sediment core-based case studies, (i) the Late Pleistocene equatorial Pacific Ocean. (ii) the mid-Holocene European Lake Lucerne, and (iii) the...
Tipo: Text
Palavras-chave: Biomass burning; Carbon cycle; Charcoal; Black carbon; Climate; Human impact.
Ano: 2010
URL: https://archimer.ifremer.fr/doc/00231/34198/32764.pdf