Type
Topic
Region
Year
Displaying 326 - 335 of 335
Earlier work showed that Amazonian biomass burning produces both lofted and initially unlofted emissions in large amounts. A mobile, Fourier transform infrared spectrometer (FTIR) measured the unlofted emissions of 17 trace gases from residual smoldering combustion (RSC) of logs…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Prescribed Fire
Region(s): International
Keywords: FERA - Fire and Environmental Research Applications Team, Brazil, biomass burning, fire emissions
(1) We used dendrochronology to reconstruct the transfer of coarse woody debris across a forest-stream interface in a fire-prone boreal landscape. A sequence of regulating factors was considered from source to sink of in-stream woody debris (SWD), including fire history at the…
Person:
Year: 2007
Type: Document
Source: FRAMES, TTRS
Topic(s): Aquatic, Emissions and Smoke, Fire Behavior, Fire Ecology, Fire Effects, Fire History, Fire Occurrence, Fuels, Intelligence
Region(s): International
Keywords: Canada, woody debris, boreal landscape, disturbance severity, ecosystem resilience, Quebec, riparian forest, SWD - in-stream woody debris, ecosystem coupling, forest-stream interface, lateral flow, nonlinear ecosystem dynamics, source-sink dynamics, BEHAVE, boreal forests, conifers, decay, dendrochronology, disturbance, ecosystem dynamics, erosion, fire case histories, fire frequency, fire intensity, fire management, fire scar analysis, forest management, litter, population density, post-fire recovery, residence time, riparian habitats, seed dispersal, seeds, serotiny, statistical analysis, wood, woody plants
Changes in climate, atmospheric carbon dioxide concentration and fire regimes have been occurring for decades in the global boreal forest, with future climate change likely to increase fire frequency - the primary disturbance agent in most boreal forests. Previous attempts to…
Person:
Year: 2007
Type: Document
Source: FRAMES, TTRS
Topic(s): Climate, Emissions and Smoke, Fire Effects, Fire History, Fire Occurrence, Models
Region(s): International
Keywords: boreal forests, Canada, carbon balance, fire regimes, carbon dynamics, net primary production, atmospheric carbon dioxide concentration, net biome production, vegetation dominance, Alberta, C - carbon, CO2 - carbon dioxide, climatology, competition, coniferous forests, conifers, deciduous forests, disturbance, dominance, drainage, fire frequency, fire management, fire size, forest management, Manitoba, mosses, Picea mariana, Populus tremuloides, precipitation, Saskatchewan, statistical analysis, temperature, trees, vascular plants, vegetation surveys, wildfires
Concentrations of mercury (Hg) in soil profiles and vegetation were examined in unburned areas and in areas recently burned by wildfires of low, medium, and high fire severities in western Wyoming. Paired unburned and burned sampling sites with similar tree species composition,…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects
Region(s): Rocky Mountain
Keywords: soil, vegetation, wildfires, Hg - mercury, Wyoming, forest fire severity, tree species composition
Wildfire is a common occurrence in ecosystems of northern high latitudes, and changes in the fire regime of this region have consequences for carbon feedbacks to the climate system. To improve our understanding of how wildfire influences carbon dynamics of this region, we used…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire History, Fire Occurrence, Models
Region(s): Alaska, International
Keywords: ecosystem modeling, Eurasia, boreal carbon dynamics
Burning of agricultural waste residue is a common method of disposal when preparing land following crop harvest. This practice introduces volatile organic compounds, including polycyclic aromatic hydrocarbons (PAHs), into the atmosphere. This study examines the particle size…
Person:
Year: 2007
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Fuels
Region(s): California
Keywords: PAH - polycyclic aromatic hydrocarbons, particle size, distribution, agricultural burning, emission factors, biofuel, C - carbon, chemical compounds, combustion, cropland fires, fire management, fuel loading, hydrocarbons, particulates, smoke management, statistical analysis, temperature
It has been suggested that thinning trees and other fuel-reduction practices aimed at reducing the probability of high-severity forest fire are consistent with efforts to keep carbon (C) sequestered in terrestrial pools, and that such practices should therefore be rewarded…
Person:
Year: 2011
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Fuels
Region(s): California, Great Basin, Northern Rockies, Northwest, Rocky Mountain, Southwest
Keywords: fire severity, fuel reduction treatments, carbon storage, western United States, fire exclusion, fire frequency, fire hazard reduction, fire injury, fire intensity, fuel moisture, surface fuels, wildfires, air quality, biomass, C - carbon, disturbance, drought, mortality, size classes, thinning, Pinus ponderosa, ponderosa pine, Pseudotsuga menziesii, Douglas-fir, ecosystem dynamics, fire management, forest management, fuel management, coniferous forests
For millennia, peatlands have served as an important sink for atmospheric CO2 and today represent a large soil carbon reservoir. While recent land use and wildfires have reduced carbon sequestration in tropical peatlands, the influence of disturbance on boreal peatlands is…
Person:
Year: 2011
Type: Document
Source: FRAMES, TTRS
Topic(s): Climate, Emissions and Smoke, Fire Ecology
Region(s): Alaska, International
Keywords: carbon emissions, organic matter, peatlands, boreal peatlands, carbon loss, combustion, peat fires, surface fires, surface fuels, wildfires, C - carbon, carbon dioxide, climate change, drainage, soil moisture, soil nutrients, soil organic matter, Canada, Alberta, fire management, land use, soil management, boreal forest, marshland
Prehistoric fire area and emissions from California's forests, woodlands, shrublands, and grasslands
In the majority of US political settings wildland fire is still discussed as a negative force. Lacking from current wildfire discussions are estimates of the spatial extent of fire and their resultant emissions before the influences of Euro-American settlement and this is the…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire History
Region(s): California
Keywords: air quality, C - carbon, fire exclusion, fire regime, fire return interval, fire suppression, particulates, fire policy, fire rotation, air resource management
Wildland fire is a major disturbance in most ecosystems worldwide (Crutzen and Goldammer 1993). The interaction of fire with climate and vegetation over long time spans, often referred to as the fire regime (Agee 1993; Clark 1993; Swetnam and Baisan 1996; Swetnam 1997), has…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Climate, Emissions and Smoke, Fire Behavior, Fire Effects, Models
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: C - carbon, fire regimes, climate change, spatial models, ecosystems, fire models, vegetation models