نتایج جستجو برای: forest fire

تعداد نتایج: 143001  

2017
Matthew D Hurteau

Climate projections for the southwestern US suggest a warmer, drier future and have the potential to impact forest carbon (C) sequestration and post-fire C recovery. Restoring forest structure and surface fire regimes initially decreases total ecosystem carbon (TEC), but can stabilize the remaining C by moderating wildfire behavior. Previous research has demonstrated that fire maintained forest...

Journal: :Ecological applications : a publication of the Ecological Society of America 2007
J Kevin Hiers Joseph J O'Brien Rodney E Will Robert J Mitchell

Longleaf pine (Pinus palustris) woodlands and savannas are among the most frequently burned ecosystems in the world with fire return intervals of 1-10 years. This fire regime has maintained high levels of biodiversity in terms of both species richness and endemism. Land use changes have reduced the area of this ecosystem by >95%, and inadequate fire frequencies threaten many of the remnants tod...

2007
Soung-Ryoul Ryu Jiquan Chen Daolan Zheng Jacob J. Lacroix

Recent studies suggest that manipulation of landscape patterns is the most preferred method to reduce susceptibility of landscape to fire spread. e evaluated the effects of landscape spatial pattern and spatial heterogeneity of fuel loading on surface fire spread using the FARSITE model n Chequamegon National Forest landscape, Wisconsin. Five forest management scenarios were developed to genera...

2002
Ahmed SAIDI

The mastery of strategies of forests fire-fighting passes compulsorily by deep knowledge of forest fire phenomenon. One of the efficient means of apprehension of the forest fire, is to dispose of a tool that is capable to inform us about the behavior of fire before its apparition according to the given climatic conditions. In this context, the simulation remains an effective tool for the predic...

Journal: :Ying yong sheng tai xue bao = The journal of applied ecology 2013
Xue-ying Di Yu-zhu Tao

The occurrence of the secondary disasters of forest fire has significant impacts on the environment quality and human health and safety. Post-fire debris flow is one of the most hazardous secondary disasters of forest fire. To understand the occurrence conditions of post-fire debris flow and to master its occurrence situation are the critical elements in post-fire hazard assessment. From the vi...

2013
DANIEL G. GAVIN LINDA B. BRUBAKER D. NOAH GREENWALD

The mode and tempo of forest compositional change during periods of rapid climate change, including the potential for the fire regime to produce nonlinear relationships between climate and vegetation, is a long-standing theme of forest ecological research. In the old conifer forests of the coastal Pacific Northwest, fire disturbances are sufficiently rare that their relation to climate and thei...

2005
T Kitzberger E Raffaele T Veblen

Landscapes in northern Patagonia have undergone dramatic changes in fire regimes over the last century. Superimposed on this changing vegetation mosaic are impacts from introduced herbivores. In this paper we identify synergistic interactions developing into positive fire-herbivory feedbacks that maximise vegetation change. Analyses of vegetation changes over 30 years at low altitude (c. 800m) ...

2006
Lewis Ntaimo

Wildfires and their associated destruction have highlighted the need for real-time simulation systems for accurately predicting fire spread. Such systems would assist fire managers in their efforts to effectively contain potentially catastrophic fires. Modeling and simulation of forest fire spread using the cellular discrete event approach is based on dividing the forest into small areas called...

2011
J. Ramiro Martinez de Dios Luis Merino Fernando Caballero Aníbal Ollero

This paper presents a novel system for automatic forest-fire measurement using cameras distributed at ground stations and mounted on Unmanned Aerial Systems (UAS). It can obtain geometrical measurements of forest fires in real-time such as the location and shape of the fire front, flame height and rate of spread, among others. Measurement of forest fires is a challenging problem that is affecte...

2012
B. M. Collins S. L. Stephens

Fire will continue to be a major management challenge in mixed-conifer forests in the Sierra Nevada. Fire is a fundamental ecosystem process in these forests that was largely eliminated in the 20th century. Fire reintroduction is a critical goal but is subject to constraints such as smoke production, risk of fire moving outside designated boundaries, the expanding wildland-urban interface, and ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید