أعرض تسجيلة المادة بشكل مبسط
| dc.date |
2006-11-27T21:16:33Z |
|
| dc.date |
2006-11-27T21:16:33Z |
|
| dc.date |
1979 |
|
| dc.date.accessioned |
2013-10-16T07:42:34Z |
|
| dc.date.available |
2013-10-16T07:42:34Z |
|
| dc.date.issued |
2013-10-16 |
|
| dc.identifier |
http://hdl.handle.net/1957/3519 |
|
| dc.identifier.uri |
http://koha.mediu.edu.my:8181/xmlui/handle/1957/3519 |
|
| dc.description |
A multistage sampling survey to measure annual and cumulative mortality of lodgepole
pine by mountain pine beetle was conducted
on the Beaverhead and Gallatin National
Forests, 1978-79. The survey area, 270,000
acres, was stratified into three intensity classes
from aerial sketchmapping. This was followed
by large scale (1:6,000) aerial photography,
photographic interpretation, and ground truth
measurements.
Estimates of the number of lodgepole killed
by mountain pine beetle in 1977 were
1,270,617 trees and 24.2 million cubic feet.
The number of total standing dead within the
survey boundaries was estimated at 3,117,888
trees and 62.2 million cubic feet. This total
standing dead represents 31.4 percent of the
total basal area. |
|
| dc.language |
en_US |
|
| dc.publisher |
[Mont.? : U.S. Dept. of Agriculture, Forest Service, Northern Region, State and Private Forestry |
|
| dc.relation |
Report (United States. Forest Service. Northern Region) |
|
| dc.relation |
no. 79-20 |
|
| dc.title |
A pilot survey to measure annual mortality caused by the mountain pine beetle in lodgepole pine on the Beaverhead and Gallatin National Forests, 1978 |
|
| dc.type |
Technical Report |
|
الملفات في هذه المادة
|
لا توجد أي ملفات مرتبطة بهذه المادة.
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هذه المادة تبدو في المجموعات التالية:
أعرض تسجيلة المادة بشكل مبسط