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Variability in Older Forest Structure in Western Oregon. Nathan Poage USDA Forest Service PNW Research Station RMP Program. Western Mensurationists’ Meeting Fortuna, California June 19, 2006. Report=http://fresc.usgs.gov/products/papers/1445_Poage.pdf - PowerPoint PPT Presentation
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Variability in Older Forest Structurein Western Oregon
Nathan Poage
USDA Forest ServicePNW Research Station
RMP Program
Western Mensurationists’ MeetingFortuna, California
June 19, 2006
Report = http://fresc.usgs.gov/products/papers/1445_Poage.pdfData = http://fresc.usgs.gov/ArcIMS/Website/lsog/viewer.htm
Northwest Forest Plan
Late-Successional Reserves (LSRs)7,533,000 acCongressionally Reserved Areas 7,320,600 acMatrix 3,975,300 acRiparian Reserves 2,627,500 acAdaptive Management Areas 1,521,800 acAdministrative Withdrawn Areas 1,477,100 ac
Total = 24,455,300 ac
Land Use Allocations
LSRs shownin yellow.
?
What are “legitimate” structural targets for young,managed stands in Late-Successional Reserves?
CurrentStructure
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OR090-TS86-014 (eug\tc85\e04388) and photo (d_postdoc\d_bigtree\d_airphoto\site_092\2000-13-43.1-2.jpg)
Unit 1
(48 acres)
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Oregon
Portland
Poage and Tappeiner (2005)
Tree species and size structure of old-growth forests in central western Oregon, USA.
Forest Ecology and Management 204:329-343.
888888888804388 010178000095 0210 204388011 12 2 6 6 304388011 12 3 6 6 6 204388011 16 3 5 6 6 104388011 16 4 5 6 6 6 204388011 16 6 5 6 6 6 6 6 104388011 20 4 5 5 6 6 104388011 20 5 5 5 5 6 6 204388011 20 6 5 5 5 6 6 6 4
BLM District(04 = Eugene)
SaleNumber
Sub-SaleNumber
Species Code(01 = Douglas-fir)
Diameter Class(4 inch classes)
Number of16-foot Logs
Log Grades(if graded)
Number of Trees in Sub-SaleFitting This Diameter and
Log Grade Description
0
1
2
3
4
12 24 36 48 60 72 84
DBH (inches)
Tre
es p
er A
cre
Douglas-fir Cedar Hemlock
Species – Diameter Distributions