Estimating Hydrologic Values for Planning Wildland Fire Protection1

نویسندگان

  • Henry W. Anderson
  • Clinton B. Phillips
چکیده

411 Abstract: Expected effects of wildland fires on hydrologic values have been indexed by 11 hydrologic parameters of floods, sedimentation and water supply. Coefficients and watershed attributes from 10 multiple-regression models are used to distribute measured hydrologic parameters throughout each watershed. Other coefficients are used with present fire condition and fire frequency to estimate changes in the hydrologic parameters for four fire conditions: unburned, l percent average annual burn, after a 100 percent burn, and after a burn of 10,000 acres (3900 ha). Application is illustrated for north coastal, Sierra Nevada, and southern California watersheds.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The theory, direction, and magnitude of ecosystem fire probability as constrained by precipitation and temperature

The effects of climate on wildland fire confronts society across a range of different ecosystems. Water and temperature affect the combustion dynamics, irrespective of whether those are associated with carbon fueled motors or ecosystems, but through different chemical, physical, and biological processes. We use an ecosystem combustion equation developed with the physical chemistry of atmospheri...

متن کامل

Local Planning Considerations for the Wildland - Structural Intermix in the Year 2000 1

California's foothill counties are the scene of rapid development. All types of construction in former wildlands is creating an intermix of wildland-structures-wildland that is different from the traditional "urban-wildland interface." The fire and structural environment for seven counties is described. Fire statistics are compared with growth patterns from 1970 to 1985. Potentials for the year...

متن کامل

Strategic Planning and Budgeting of Wildland Fire Preparedness Programs for Risk Management

In approaches that were previously used, preparedness planning used tactical modelling of individual fire events and resource deployment. Results from modelling individual fire events were typically gathered to construct a program analysis at the planning unit or at the landscape level. This research deviates from those tactical-based approaches by using strategic modelling to inform planning a...

متن کامل

Human influence on California fire regimes.

Periodic wildfire maintains the integrity and species composition of many ecosystems, including the mediterranean-climate shrublands of California. However, human activities alter natural fire regimes, which can lead to cascading ecological effects. Increased human ignitions at the wildland-urban interface (WUI) have recently gained attention, but fire activity and risk are typically estimated ...

متن کامل

Estimating contribution of wildland fires to ambient ozone levels in National Parks in the Sierra Nevada, California.

Data from four continuous ozone and weather monitoring sites operated by the National Park Service in Sierra Nevada, California, are used to develop an ozone forecasting model and to estimate the contribution of wildland fires on ambient ozone levels. The analyses of weather and ozone data pointed to the transport of ozone precursors from the Central Valley as an important source of pollution i...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008