أعرض تسجيلة المادة بشكل مبسط
| dc.date |
2006-11-21T17:35:38Z |
|
| dc.date |
2006-11-21T17:35:38Z |
|
| 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/1957/3468 |
|
| dc.identifier.uri |
http://koha.mediu.edu.my:8181/xmlui/handle/1957/3468 |
|
| dc.description |
Mountain pine beetle infestations developed to epidemic level in
lodgepole pine stands on the Yaak District in 1972. Approximately
56,282 trees were killed from 1973 to 1975. By 1975, 2,068 ha were
infested. This increased to 7,138 ha in 1976, representing a
threefold increase. Current infestation occurs on 13 percent of
the area risk rated high and given Priority 1 rating for
management. Selective logging to remove infested and susceptible
trees is in progress and it is recommended that these practices
continue to reduce the infestation to endemic levels. |
|
| 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. 77-8 |
|
| dc.relation |
Forest insect & disease management |
|
| dc.title |
Evaluation of mountain pine beetle infestation, Lap, Cool, and Caribou Drainages, Yaak District, Kootenai National Forest, 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