أعرض تسجيلة المادة بشكل مبسط

dc.date 2007-05-01T13:39:15Z
dc.date 2007-05-01T13:39:15Z
dc.date 1990-05
dc.date.accessioned 2013-10-16T07:48:36Z
dc.date.available 2013-10-16T07:48:36Z
dc.date.issued 2013-10-16
dc.identifier http://hdl.handle.net/1957/4697
dc.identifier.uri http://koha.mediu.edu.my:8181/xmlui/handle/1957/4697
dc.description Fire history from years 1150 to 1985 was reconstructed by analyzing forest stands in two 1940-hectare areas in the central-western Cascade Range of Oregon. Serving as records for major fire episodes, these stands revealed a highly variable fire regime. The steeper, more dissected, lower elevation Cook-Quentin study area experienced more frequent fires (natural fire rotation = 95 years) that were commonly low to moderate in severity. The Deer study area, with its cooler, moister conditions and gentler topography, had a regime of less frequent (natural fire rotation = 149 years), predominantly stand-replacement fires. Fires created a complex mosaic of stands with variable date and severity of last burn. Fire-created forest patches originating in 1800-1900 are mostly less than 10 hectares. Since 1900, very little of the study areas burned, possibly because of fire suppression.
dc.language en_US
dc.publisher Portland, Or. : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station
dc.relation General technical report PNW
dc.relation 254
dc.relation Reports and Publications -- Other Reports and Publications
dc.relation Explorer Site -- Oregon Explorer
dc.subject Thematic Classification -- Habitats and Vegetation -- Vegetation
dc.subject Thematic Classification -- Habitats and Vegetation -- Vegetation -- Forests
dc.subject Thematic Classification -- Habitats and Vegetation -- Vegetation -- Historic Vegetation
dc.subject Thematic Classification -- Land and People -- Fire and Fire Risk
dc.title Fire history and pattern in a Cascade Range landscape
dc.type Technical Report


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أعرض تسجيلة المادة بشكل مبسط