نتایج جستجو برای: land fire

تعداد نتایج: 158578  

2010
Jason J. Moghaddas Brandon M. Collins Kurt Menning Scott L. Stephens

Across the western United States, decades of fire exclusion combined with past management history have contributed to the current condition of extensive areas of high-density, shade-tolerant coniferous stands that are increasingly prone to high-severity fires. Here, we report the modeled effects of constructed defensible fuel profile zones and group selection treatments on crown fire potential,...

Journal: :Ecology 2008
Penelope Morgan Emily K Heyerdahl Carly E Gibson

We inferred climate drivers of 20th-century years with regionally synchronous forest fires in the U.S. northern Rockies. We derived annual fire extent from an existing fire atlas that includes 5038 fire polygons recorded from 12,070,086 ha, or 71% of the forested land in Idaho and Montana west of the Continental Divide. The 11 regional-fire years, those exceeding the 90th percentile in annual f...

2000
Matthew Rollins Tom Swetnam Penelope Morgan

Twentieth century fire patterns were analyzed for two large, disparate wilderness areas in the Rocky Mountains. Spatial and temporal patterns of fires were represented as GIS-based digital fire atlases compiled from archival Forest Service data. We find that spatial and temporal fire patterns are related to landscape features and changes in land use. The rate and extent of burning are interpret...

2017
Jean Marchal Steve G. Cumming Eliot J. B. McIntire

Fire activity in North American forests is expected to increase substantially with climate change. This would represent a growing risk to human settlements and industrial infrastructure proximal to forests, and to the forest products industry. We modelled fire size distributions in southern Québec as functions of fire weather and land cover, thus explicitly integrating some of the biotic intera...

Journal: :Global change biology 2013
Jennifer K Balch Bethany A Bradley Carla M D'Antonio José Gómez-Dans

Non-native, invasive grasses have been linked to altered grass-fire cycles worldwide. Although a few studies have quantified resulting changes in fire activity at local scales, and many have speculated about larger scales, regional alterations to fire regimes remain poorly documented. We assessed the influence of large-scale Bromus tectorum (hereafter cheatgrass) invasion on fire size, duration...

Journal: :Environmental management 2005
Caren C Dymond Robert D Field Orbita Roswintiarti Guswanto

Vegetation fires have become an increasing problem in tropical environments as a consequence of socioeconomic pressures and subsequent land-use change. In response, fire management systems are being developed. This study set out to determine the relationships between two aspects of the fire problems in western Indonesia and Malaysia, and two components of the Canadian Forest Fire Weather Index ...

2016
Rob Gazzard Julia McMorrow Jonathan Aylen

Severe wildfires are an intermittent problem in England. The paper presents the first analysis of wildfire policy, showing its halting evolution over two decades. First efforts to coordinate wildfire management came from local fire operation groups, where stakeholders such as fire services, land owners and amenity groups shared knowledge and equipment to tackle the problem. A variety of structu...

Journal: :Ecological applications : a publication of the Ecological Society of America 2016
Lane B Johnson Kurt F Kipfmueller

We reconstructed fire occurrence near a fur-trade era canoe travel corridor (used ca. 1780-1802) in the Quetico-Superior region west of Lake Superior to explore the possibility of human influence on pre-fire suppression rates of fire occurrence. Our research objectives were to (1) examine the spatial and temporal patterns of fire in the study area, (2) test fires' strength of association with r...

2008
Randi Jandt Kyle Joly C. Randy Meyers Charles Racine

*Bureau of Land Management, Alaska Fire Service, P.O. Box 35005, Fort Wainwright, Alaska 99703, U.S.A. [email protected] {Bureau of Land Management, Fairbanks District Office, 1150 University Avenue, Fairbanks, Alaska 99709, U.S.A. {Bureau of Land Management (retired), P.O. Box 574, Kotzebue, Alaska 99752, U.S.A. 1Cold Regions Research and Engineering Lab (retired), 110 Blount Street, Edenton...

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