Current Search: Agriculture, Forestry and Wildlife (x)
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Title
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Critical behavior of forest fires: Theory and numerical simulations.
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Creator
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Lu, Huizong, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Physics
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Abstract/Description
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Forest fire is an integral part of natural ecosystems. Understanding the mechanisms governing the formation and propagation of forest fire is imperative for effectively managing the natural resources of a forest and minimizing or eliminating damages caused by uncontrolled forest fire. Numerical simulation of two-dimensional forest fires indicates that there is a critical state at which the fire is likely to spread to the entire forest. The effects of wind conditions and multiple tree species...
Show moreForest fire is an integral part of natural ecosystems. Understanding the mechanisms governing the formation and propagation of forest fire is imperative for effectively managing the natural resources of a forest and minimizing or eliminating damages caused by uncontrolled forest fire. Numerical simulation of two-dimensional forest fires indicates that there is a critical state at which the fire is likely to spread to the entire forest. The effects of wind conditions and multiple tree species are studied using numerical simulations and various Mean Field Approximations. Results from the analytical calculations agree well with numerical simulations for square lattice forest fire. Other lattice structures are also investigated. Mathematical models with non-linearly coupled equations are derived to study finite, layered, pseudo-two-dimensional forest fires. Critical states can be predicted by evaluating these non-lineady coupled equations.
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Date Issued
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2000
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PURL
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http://purl.flvc.org/fcla/dt/12645
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Subject Headings
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Agriculture, Forestry and Wildlife
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Format
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Document (PDF)
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Title
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The effects of fire on the demographics of Neyraudia reynaudiana in the pine rocklands.
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Creator
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Rasha, Renee L'Hoste, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
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Abstract/Description
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This study is to further understand the effects of fire on the invasive Asian grass, Neyraudia reynaudiana in the south Florida pine rocklands, at Larry and Penny Thompson Park in Miami-Dade County. Urban surroundings, fire suppression, and Hurricane Andrew in 1992 required prescribed fire in the pine rocklands to prevent wildfires and succession into hardwood habitat. Neyraudia reynaudiana's rapid spread caused concern due to its resistance to herbicide. A main concern was that fire, which...
Show moreThis study is to further understand the effects of fire on the invasive Asian grass, Neyraudia reynaudiana in the south Florida pine rocklands, at Larry and Penny Thompson Park in Miami-Dade County. Urban surroundings, fire suppression, and Hurricane Andrew in 1992 required prescribed fire in the pine rocklands to prevent wildfires and succession into hardwood habitat. Neyraudia reynaudiana's rapid spread caused concern due to its resistance to herbicide. A main concern was that fire, which is a natural component of the pine rockland community, could enhance Neyraudia reynaudiana's spread. This study observed and measured Neyraudia reynaudiana regrowth in two plant communities at five times over one year after one treatment of prescribed fire. Two herbaceous plant inventories were taken one year apart. The study's results show that Neyraudia reynaudiana was enhanced by fire.
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Date Issued
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2000
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PURL
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http://purl.flvc.org/fcla/dt/12696
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Subject Headings
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Biology, Botany, Biology, Ecology, Agriculture, Forestry and Wildlife
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Format
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Document (PDF)