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  2. Soil acidification - Wikipedia

    en.wikipedia.org/wiki/Soil_acidification

    Soil acidification is the buildup of hydrogen cations, which reduces the soil pH. Chemically, this happens when a proton donor gets added to the soil. The donor can be an acid, such as nitric acid, sulfuric acid, or carbonic acid. It can also be a compound such as aluminium sulfate, which reacts in the soil to release protons.

  3. Soil pH - Wikipedia

    en.wikipedia.org/wiki/Soil_pH

    Soil pH is a key characteristic that can be used to make informative analysis both qualitative and quantitatively regarding soil characteristics. [ 1 ] pH is defined as the negative logarithm (base 10) of the activity of hydronium ions (H+ or, more precisely, H3O+aq) in a solution.

  4. October 2007 California wildfires - Wikipedia

    en.wikipedia.org/wiki/October_2007_California...

    The October 2007 California wildfires, also known as the Fall 2007 California firestorm, [11] were a series of about thirty wildfires (17 of which became major wildfires) [8] that began igniting across Southern California on October 20. At least 1,500 homes were destroyed [12] and approximately 972,147 acres (about 3,934 km 2, or 1,520 mi 2) of ...

  5. Valley Fire - Wikipedia

    en.wikipedia.org/wiki/Valley_Fire

    The Valley Fire was a wildfire during the 2015 California wildfire season that started on September 12 in Lake County, California. [1] It began shortly after 1:00 pm near Cobb with multiple reports of a small brush fire near the intersection of High Valley and Bottlerock Roads. It quickly spread and by 6:30 PM PDT, it had burned more than ...

  6. 2007 California wildfires - Wikipedia

    en.wikipedia.org/wiki/2007_California_wildfires

    The 2007 California wildfire season saw at least 9,093 separate wildfires that charred 1,520,362 acres (6,152.69 km 2) of land. [1] Thirty of those wildfires were part of the Fall 2007 California firestorm, [5] which burned approximately 972,147 acres (about 3,934 km 2, or 1,520 mi 2) of land from Santa Barbara County to the U.S.–Mexico ...

  7. 49er Fire - Wikipedia

    en.wikipedia.org/wiki/49er_Fire

    The 49er Fire was a destructive wildfire in 1988 in Northern California 's Nevada County and Yuba County. The fire ignited on September 11 when a man accidentally set brush on fire by burning toilet paper near Highway 49. Driven by severe drought conditions and strong, dry winds, firefighting crews were hard-pressed to stop the fire's advance ...

  8. Acid sulfate soil - Wikipedia

    en.wikipedia.org/wiki/Acid_sulfate_soil

    Acid sulfate soils are naturally occurring soils, sediments or organic substrates (e.g. peat) that are formed under waterlogged conditions. These soils contain iron sulfide minerals (predominantly as the mineral pyrite) and/or their oxidation products. In an undisturbed state below the water table, acid sulfate soils are benign.

  9. Wildfire - Wikipedia

    en.wikipedia.org/wiki/Wildfire

    The Mangum Fire burned more than 70,000 acres (280 km 2) of forest. A wildfire, forest fire, or a bushfire is an unplanned, uncontrolled and unpredictable fire in an area of combustible vegetation. [1][2] Depending on the type of vegetation present, a wildfire may be more specifically identified as a bushfire (in Australia), desert fire, grass ...