أعرض تسجيلة المادة بشكل مبسط
| dc.date |
2006-11-21T17:40:31Z |
|
| dc.date |
2006-11-21T17:40:31Z |
|
| dc.date |
1977 |
|
| dc.date.accessioned |
2013-10-16T07:42:02Z |
|
| dc.date.available |
2013-10-16T07:42:02Z |
|
| dc.date.issued |
2013-10-16 |
|
| dc.identifier |
http://hdl.handle.net/1957/3469 |
|
| dc.identifier.uri |
http://koha.mediu.edu.my:8181/xmlui/handle/1957/3469 |
|
| dc.description |
Mountain pine beetle populations developed to epidemic level in
lodgepole pine stands in 1973. Approximately 426,355 trees were
killed on 3,433 hectares in 1976. Infestations are expected to
intensify in areas of current infestation and develop in uninfested
stands. It is predicted that 1,722,288 trees will be
killed in 1977. Salvage logging of infested trees and silvicultural
management to reduce average stand diameter below 20.3
cm d.b.h. are recommended. |
|
| 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. 77-9 |
|
| dc.relation |
Forest insect & disease management |
|
| dc.title |
Evaluation of a mountain pine beetle infestation, Jack Creek Drainage, Madison District, Beaverhead National Forest, Montana, 1976 |
|
| 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