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    • Hydrology and Water Resources in Arizona and the Southwest, Volume 01 (1971)
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    Effects of Fire on Water Infiltration Rates in a Ponderosa Pine Stand

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    Author
    Zwolinski, Malcolm J.
    Affiliation
    University of Arizona, Tucson
    Issue Date
    1971-04-23
    Keywords
    Water resources development -- Arizona.
    Hydrology -- Arizona.
    Hydrology -- Southwestern states.
    Water resources development -- Southwestern states.
    Burning
    Infiltration
    Soil chemical properties
    Forest soils
    Watersheds
    Ponderosa pine trees
    Arizona
    Infiltrometers
    Soil temperature
    Overwintering sites
    Frost action
    Soil texture
    Porosity
    Forest fires
    Forest management
    Water repellent soils
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    Copyright ©, where appropriate, is held by the author.
    Collection Information
    This article is part of the Hydrology and Water Resources in Arizona and the Southwest collections. Digital access to this material is made possible by the Arizona-Nevada Academy of Science and the University of Arizona Libraries. For more information about items in this collection, contact anashydrology@gmail.com.
    Publisher
    Arizona-Nevada Academy of Science
    Journal
    Hydrology and Water Resources in Arizona and the Southwest
    Abstract
    The importance of pine forest as a timber and water producing area has led to intensive management, including protection from wildfire. This has resulted in dense stand growth with increased destructive fire potential and transpirational water loss. In Arizona, as in many areas, prescribed forest burning has been used to effectively reduce these fuel hazards. Some question has arisen about the possible side effects of such treatments, particularly air pollution and reduction of infiltration and water yield. In an effort to determine the effects on infiltration, plots receiving various treatments (control, light burn, heavy burn) were fitted with fusion pyrometers before burning, to measure soil surface temperatures during burning. After burning, infiltrometers were installed. Surface temperatures did not exceed 200 degrees f. For the light burns, and ranged over 350-500 degrees f. During heavy burns. Both heavy and light burns produced highly significant decreases in infiltration capacities after burning and the surface 2 inches showed increases in soil pH, carbon and total nitrogen percentages. Infiltration capacities returned to normal after overwintering and were attributed to frost action on soil texture and porosity. The soil chemical changes decreased slowly over 2 years. Soil water repellency also increased and the significance of this is discussed.
    ISSN
    0272-6106
    Collections
    Hydrology and Water Resources in Arizona and the Southwest, Volume 01 (1971)

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