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Displaying 21 - 40 of 6051 results
Background
Experimental forests present unrivaled opportunities to understand the factors influencing vegetation structure many decades after silvicultural treatments or natural disturbances. In this study, we use the western larch-dominated moist…
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Background
Silvicultural treatments that modify forest structure and reduce fuel loads can help mitigate future wildfire effects, but treatment efficacy declines over time. In 2021, we remeasured a southern Sierra Nevada mixed conifer forest 13…
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It has long been recognized that antecedent weather and climate conditions strongly modulate wildfire activity across a wide range of ecosystems and vegetation types. On short timescales, low humidity and high wind conditions can favor fast-…
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This research assesses the effect of two common assumptions in simplified flame spread models: (i) that the pyrolysis front propagates in one dimension and (ii) that ignition time () and heat release rate per unit area (HRRPUA) values measured at…
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Forest ecosystems, as vital natural resources, are increasingly endangered by wildfires. Effective forest fire management relies on the accurate and early detection of small–scale flames and smoke. However, the complex and dynamic forest environment…
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A portable and integrated monitoring device was developed to digitally assess both water levels and surrounding fire-related conditions in forest firefighting water buckets using multi-sensor fusion. The system integrates a hydrostatic liquid-level…
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Highlights
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Fall prescribed burns combusted more surface soil carbon than spring burns.
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Fall burns stimulated microbial respiration, slowing soil carbon recovery.
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Microbial respiration was lower after spring burns, allowing soil C to…
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Background
Vegetation fire risk is increasing in temperate regions like the UK, yet understanding of surface and synoptic weather controls on fire is limited.
Aims
We examined seasonal relationships between (i) synoptic weather patterns and surface…
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Background
Climate change is expected to alter fire return intervals in cold and wet forests in the northwestern United States. This coupled with an expected rise in prescribed fires to restore healthy forests, disproportionately increases risk to…
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Background
Reducing fuels in overly dense, arid forests of the Western US is a prominent fire mitigation strategy. Fuel treatments, including thinning and prescribed burning, are a means of reintroducing fire to fire-dependent forests and…
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Bush encroachment into rangelands is a topical issue across the globe, especially in semiarid regions, including southern Africa. Because this has negative implications for livestock production and biodiversity conservation, effective and…
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The development of fire-induced wind and its action on wildfire behaviour are studied by numerical simulation of fire spread on sloping terrain. The simulations, conducted using a physics-based fire model, are based on a shrubland fire experiment…
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Abstract
Ponderosa pine forests are experiencing large-scale mortality and inadequate natural regeneration across the American Southwest. High-quality nursery-grown ponderosa pine (Pinus ponderosa Douglas ex C. Lawson) seedlings for reforestation…
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Thermal radiation from the flame to the unburned fuel plays a key role in horizontal concurrent flame spread by heating the fuel surface and influencing the spread of the flame. This work investigates thermal radiation in horizontal concurrent flame…
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Background: Roads play an important role in managing fire on the national forests. But roads also are known to increase ignitions and damage ecosystems. Roads may limit the size of wildfires, which may be viewed as desirable where fires endanger…
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Wildfires have increasingly affected human and natural systems across the western United States (WUS) in recent decades. Given that the majority of ignitions are human-caused and potentially preventable, improving the ability to predict fire…
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As climate conditions intensify fire seasons, human exposure to wildfire smoke becomes a more significant concern, posing health risks and disrupting emotional and social well-being. Academic literature exploring how people perceive and respond to…
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Multi-stakeholder planning and prioritization for ecosystem management and wildfire risk mitigation are complicated by the need to balance a multitude of values, goals, viewpoints, and interests across large landscapes. Doing so requires quantifying…
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Wildfires have increasingly affected human and natural systems across the western United States (WUS) in recent decades. Given that the majority of ignitions are human-caused and potentially preventable, improving the ability to predict fire…
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This fact sheet on wildfire smoke from the Montrose Lab at Colorado State University synthesizes information about wildfire smoke composition, health impacts to wildland firefighters, mitigation methods, and health resources that are available for…
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