Articles tagged with Forest Fires
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A recent BioScience article highlights that decades of fire suppression may have been overly criticized, and climate has a significant impact on fire spread in high-elevation forests. The studies also reveal how invasive alien plants can dramatically alter fire regimes, proposing a scheme for evaluating the dangers of these invasions.
A study found that ponderosa pine and Douglas fir needles can reduce water flow erosion by up to 60% and rain-induced erosion by up to 80%. Researchers used artificial rain laboratory experiments to test the effectiveness of needle cover in preventing post-fire soil erosion.
Researchers found that Canadian forest fires can cause large pulses in atmospheric mercury levels, affecting regions like the northeastern US. The study estimated annual emissions from Canadian forests and worldwide boreal forest fires, suggesting a significant impact on mercury levels.
A new remote sensing system, the Wildfire Airborne Sensor Program (WASP), will be able to detect wildfires as small as 8-12 inches in diameter from 10,000 feet altitude. The system combines infrared and high-resolution visible cameras with GIS technology to provide accurate and reliable fire detection.
Research shows that fire frequency impacts the ability of forests to store carbon, with younger stands storing less carbon than older ones. Forests dominated by rapidly growing aspen trees tend to store more carbon than those with slower-growing black spruce and jack pine trees.
A new GIS tool called GeoWEPP can rapidly assess soil erosion and sediment delivery in streams after wildfires, allowing forest managers to quickly plan and implement conservation measures. The tool guides users to select the best and most cost-effective conservation measures to mitigate erosion and protect water sources.
Coal fires consume up to 200 million tons of coal annually, releasing greenhouse gases, soot particles, and toxic elements. Innovative solutions like heat-resistant grout may help fight these fires and mitigate their impact on climate change and human health.
The AEROCAN subnetwork measures aerosols globally, verifying NASA's Terra satellite data and providing a complete picture of pollution. Forest fires in western Canada generate significant aerosol effects, affecting visibility and air quality.
Researchers question the efficacy of prescribed burning in reducing large, intense forest fires. They argue that this technique is not suitable for closed-canopy forests and shrublands where natural fires are more frequent and severe. This approach can also have negative ecological consequences.
The Terra satellite beams daily images of western U.S. wildfires to NASA, which are then transmitted to the Forest Service. The collaboration uses MODIS data to create Active Fire Maps that help resource allocation decisions and aid in public understanding of fire locations.
Researchers have found that smoke from forest fires practically shuts off the 'warm rain' processes that create rain in tropical clouds. The cloud tops must grow above the freezing level for an alternative mechanism to start producing rain. This study, based on TRMM data, provides direct evidence of the impact of smoke on rainfall.
The University of Hawai'i computer system uses Geostationary Operational Environmental Satellites (GOES) to detect heat from fires on the ground, providing early warnings for forest services. The system has been tested in Southern California and will soon monitor fires across the West Coast, including California, Oregon, and Washington.
A recent USGS study has found that urban sprawl, not fire suppression, is largely responsible for the devastating wildfires in southern and central-coastal California. The researchers suggest that strategic management of buffer zones between urban lands and wildlands could help mitigate ecological impacts.
Researchers found that global climate change could lead to dramatic increases in California wildfires and economic losses. The study analyzed the potential effects of climate change on wildfires in California and found that changes would occur despite enhanced fire suppression resources.
A computer simulation by Cornell University geologists shows that forest fires follow a fractal distribution, similar to other natural events. By analyzing data from forests and wildfires worldwide, including Yellowstone National Park, the researchers found that allowing smaller fires to burn can prevent larger ones.
A Penn State research team has found that small-scale fires play a crucial role in shaping forest structure. By analyzing aerial photographs from 1941 and 1993, the researchers determined that topography is key to understanding natural variability and restoring diverse fire regimes in Northern California.
University of Wisconsin-Madison biologists document a staggering decline in native prairie plant diversity over the last 30 to 50 years. The research reveals that short, small-seeded plants like legumes experienced the heaviest losses due to fire suppression and dense growth.