نتایج جستجو برای: land fire
تعداد نتایج: 158578 فیلتر نتایج به سال:
Perspective on present day issues associated with wildland fire can be gained by studying the long-term interactions among humans, landscape, and fire. Fire frequency and extent over the last 320 years document these interactions north of the Arkansas River on the southern edge of the Lower Boston Mountains. Dendrochronological methods were used to construct three fire chronologies from 309 dat...
Prescribed fire is a useful but risky method for reducing the general wildfire risk and improving wildlife habitats, biodiversity, timber growth, and agricultural forage. In the past 15 years, laws to further promote the use of prescribed fire have been adopted in several states. This article examines the effect of liability laws and common regulations on the incidence and severity of escaped p...
WE usE FIRE to accomplish many goals. Most of our use is based on long years of experience-experience that enables us to predict the results we should obtain from the "feel" of the situation. Research is being conducted, to assist less experienced land managers to understand fire more completely and to provide means for them to predict its effects in given situations. We must better learn to un...
The 2009 Victorian bushfires, also called the Black Saturday bushfires, ignited across the Australian state of Victoria on Saturday 7 February 2009, resulting in Australia’s highest ever loss of life from a bushfire. According to the Victorian Police, the bushfires caused at least 173 known deaths of people and 414 people injured. The use of multispectral Landsat Thematic Mapper (TM) data was a...
Fire as a landscape process is of broad interest to ecologists and land managers. Fires alter forest age-distributions (Heinselman, 1973; Van Wagner, 1978), are sensitive to climate (Balling et al., 1992, Swetnam and Bettancourt, 1990; Swetnam, 1993; Timoney and Wein, 1991), can be manipulated by fire suppression (Baker, 1992; Barrett, 1994), and affect directions for land management policy (Hu...
Climate change coupled with an intensifying wildfire regime is becoming an important driver of permafrost loss and ecosystem change in the northern boreal forest. There is a growing need to understand the effects of fire on the spatial distribution of permafrost and its associated ecological consequences. We focus on the effects of fire a decade after disturbance in a rocky upland landscape in ...
[1] Over the past decade, much research has been carried out on the utilization of advanced geospatial technologies (remote sensing and geographic information systems) in the fire science and fire management disciplines. Recent advances in these technologies were the focus of a workshop sponsored by the EARSEL special interest group (SIG) on forest fires (FF-SIG) and the Global Observation of F...
Small changes in spatial pattern on a landscape can sometimes produce dramatic ecological responses. Such transition ranges are associated with critical environmental conditions such as tree density. As the landscape becomes dissected into smaller patches of trees, landscape connectivity may suddenly become disrupted, which may have important consequences for the behaviors of forest fire, i.e.,...
A combined GIS and remote sensing approach is applied to map and model the Glacier National Park wildfires of the summer 2003. Numerical simulations were performed using the Clarke Fire Automaton Model, and the fire extents were associated with the atmospheric plumes, observed using remote sensing data from the MODerate resolution Imaging Spectro-radiometer and Total Ozone Mapping Spectrometer....
1 Environmental changes and the rise and fall of civilizations in the northern Horn of Africa: an approach combining δD analyses of land-plant derived fatty acids with multiple proxies in soil. Abstract 1 The domains of the ancient polities D'MT and Aksum in the Horn of Africa's highlands are a 2 superior natural system for evaluating roles of environmental change on the rise and fall of 3 civi...
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