Evaluation of the Douglas-fir beetle infestation in the North Fork Clearwater River drainage, Idaho--1972

dc.date	2006-10-30T18:34:55Z
dc.date	2006-10-30T18:34:55Z
dc.date	1972
dc.date.accessioned	2013-10-16T07:41:13Z
dc.date.available	2013-10-16T07:41:13Z
dc.date.issued	2013-10-16
dc.identifier	http://hdl.handle.net/1957/3255
dc.identifier.uri	http://koha.mediu.edu.my:8181/xmlui/handle/1957/3255
dc.description	The Douglas-fir beetle, Dendroctonus pseudotsugae Hopk., has caused extensive tree mortality for the third consecutive year in the North Fork Clearwater River drainage in northern Idaho. In 1972, the infestation encompassed about 494,080 acres of commercial forest lands in this drainage. It was estimated from a tw-stage aerial photo-ground survey that 240,00 trees were killed during the 3-year period 1970-72, resulting in a loss of about 109 MMBF of Douglas-fir sawtimber. Infestation levels are expected to decline in 1973, but significant tree mortality is expected in Localized infestation centers.
dc.language	en_US
dc.publisher	Missoula, Mont. : U.S Forest Service, Northern Region, Division of State and Private Forestry
dc.relation	Report (United States. Forest Service. Northern Region)
dc.relation	no. I-72-10
dc.relation	Insect and disease report
dc.title	Evaluation of the Douglas-fir beetle infestation in the North Fork Clearwater River drainage, Idaho--1972
dc.type	Technical Report

الملفات في هذه المادة

الملفات	الحجم	الصيغة	عرض
لا توجد أي ملفات مرتبطة بهذه المادة.