نتایج جستجو برای: land fire

تعداد نتایج: 158578  

2013
Jerry Williams

0378-1127/$ see front matter 2012 Elsevier B.V. A http://dx.doi.org/10.1016/j.foreco.2012.06.030 ⇑ Tel.: +1 406 544 2709. E-mail address: [email protected] In the modern era, high-impact mega-fires are unprecedented for the suppression costs, property losses, natural resource damages, and loss of life often involved. For a number of years, these extraordinary wildfires have been increasing i...

Journal: :Ecological applications : a publication of the Ecological Society of America 2008
Jian Yang Hong S He Stephen R Shifley

Understanding spatial controls on wildfires is important when designing adaptive fire management plans and optimizing fuel treatment locations on a forest landscape. Previous research about this topic focused primarily on spatial controls for fire origin locations alone. Fire spread and behavior were largely overlooked. This paper contrasts the relative importance of biotic, abiotic, and anthro...

2005
B. S. Yurchak

Studies of seasonal changes of ERS-2 SAR backscatter from sub-Arctic lakes and forest-tundra fire scars in Chukotka, Russia, have been carried out for the four seasons of the period between 2000 and 2004. Correlation analyses of time series of radar backscatter from the set of 13 lakes within Anadyr Lowland distinguished 3 groups of lakes. Time-series studies of SAR observations of the fire ris...

2016
Michael S. Hand Matthew P. Thompson David E. Calkin

Increasing costs of wildfire management have highlighted the need to better understand suppression expenditures and potential tradeoffs of land management activities that may affect fire risks. Spatially and temporally descriptive data is used to develop a model of wildfire suppression expenditures, providing new insights into the role of spatial and temporal heterogeneity in determining expend...

Journal: :Remote Sensing 2013
Lifan Zhou Dengrong Zhang Jie Wang Zhaoquan Huang Delu Pan

Coal fires have been found to be a serious problem worldwide in coal mining reserves. Coal fires burn valuable coal reserves and lead to severe environmental degradation of the region. Moreover, coal fires can result in massive surface displacements due to the reduction in volume of the burning coal and can cause thermal effects in the adjacent rock mass particularly cracks and fissures. The Wu...

2008
Keith T. Weber Steven S. Seefeldt

The potential for high severity fires to affect changes in rangelands is considerable, and for this reason, assessing fire severity is critical. We explored fire severity modeling in rangelands by applying post-fire field observations to Satellite Pour l'Observation de la Terre 5 (SPOT 5) imagery using Classification Tree Analysis (CTA) techniques at two 2005 burns. The results of these analyse...

2015
Aaron Rosenblum A. Rosenblum

The persistence of quaking aspen (Populus tremuloides Michx.) is of significant importance to land managers in the Rocky Mountain region. Fire suppression in the past century has been implicated as a mechanism influencing aspen population dynamics, as aspen are generally considered an early seral disturbance adapted species. The heterogeneity of aspen community assemblages and fire regimes make...

2017
Xianli Wang Marc-André Parisien B M Wotton M D Flannigan G A Marshall

Much research has been carried out on the potential impacts of climate change on forest fire activity in the boreal forest. Indeed, there is a general consensus that, while change will vary regionally across the vast extent of the boreal, in general the fire environment will become more conducive to fire. Land management agencies must consider ways to adapt to these new conditions. This paper e...

2006
Norman L. Christensen Jerry F. Franklin

• Explore the variations in forest biodiversity and associated patterns of climate and ge o g ra p hy that influence fire regimes; • Evaluate the influence of past and current management (e.g., fire exclusion) and land use on forest biodiversity; and • Consider the likely impacts of fire management alternatives, including suppression, post-fire remediation, prescribed fire, and mechanical thinn...

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