أعرض تسجيلة المادة بشكل مبسط
| dc.date |
2006-11-21T18:42:41Z |
|
| dc.date |
2006-11-21T18:42:41Z |
|
| dc.date |
1977 |
|
| dc.date.accessioned |
2013-10-16T07:42:04Z |
|
| dc.date.available |
2013-10-16T07:42:04Z |
|
| dc.date.issued |
2013-10-16 |
|
| dc.identifier |
http://hdl.handle.net/1957/3476 |
|
| dc.identifier.uri |
http://koha.mediu.edu.my:8181/xmlui/handle/1957/3476 |
|
| dc.description |
A mountain pine beetle outbreak developed on the north face of
Shook Mountain in 1972. Beetle populations increased, and have
continued at an epidemic level since 1973. Surveys show 404,798
ponderosa pine containing 12,173,940 bd. ft. volume of
merchantable timber; and 20,875 lodgepole pine containing 730,625
bd. ft. volume of merchantable timber were killed from 1974 through
1976. Losses will continue as long as stands remain overstocked
and stagnated. Reducing basal area below 120 ft. /acre by thinning
and removing infested trees will manage the infestation.
Suggestions are given to prevent buildup of secondary bark
beetles. |
|
| dc.language |
en_US |
|
| dc.publisher |
Missoula, MT. : Forest Insect & Disease Management, USDA, Forest Service, Northern Region, State & Private Forestry |
|
| dc.relation |
Report (United States. Forest Service. Northern Region) |
|
| dc.relation |
no. 77-17 |
|
| dc.relation |
Forest insect & disease management |
|
| dc.title |
Evaluation of a mountain pine beetle infestation, Shook Mountain, Sula District, Bitterroot National Forest, 1977 |
|
| dc.type |
Technical Report |
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الملفات في هذه المادة
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لا توجد أي ملفات مرتبطة بهذه المادة.
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هذه المادة تبدو في المجموعات التالية:
أعرض تسجيلة المادة بشكل مبسط