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Site Index Conversion, Mixed Species Cubic-Foot Yield Curves, Douglas-fir Cubic-foot Yield Curves, Mixed Species MAI Curves and Table, Douglas-fir MAl Curves and Table [2] Item Info

The collection and dissemination of ESI forest plot information regarding Psuedotsuga menziesii var. glauca in north Idaho relies entirely on a method developed by P. H. Cochran. The incorporation of the Cochran method was introduced to NRCS Idaho from NRCS Oregon with Technical Note 190-VI. Development of yield and site index curves by Cochran was based entirely on forest stands located on the east slopes of the Cascade Range and Blue Mountains of eastern Oregon / southeast Washington. Cochran's proposed site index and yield curves were well developed and suited for the forested landscapes used in his modeling efforts. However, forest stands of north Idaho and northwestern Montana are often dissimilar to their counterparts of the Cascades and Blue Mountains. This dissimilarity will inherently create significant predicted site index and yield error when using the Cochran method in north Idaho. Several USDA-USFS research projects specifically developed site index and yield curves for north Idaho. Research papers INT-347 (R.A. Monserud, 1985) and INT-394 (A. Stage et al., 1988) address these topics. Forest stands used to develop these models were located north from Grangeville to Porthill, Idaho and east to Libby, Montana. Most private and state forest management entities of north Idaho utilize the Stage and Monserud models for reporting yield and site index. This creates a communication breakdown between the NRCS and other forest management entities. Standardization of yield and site index reports by the NRCS is needed not only to prevent this from occurring, but also to improve rotation estimates, carbon sequestration estimates, and other naturals resource interpretations. Bringing the data up to consistent and accurate standards would improve the usability and acceptance of the NRCS Idaho soil survey product.

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Title:
Site Index Conversion, Mixed Species Cubic-Foot Yield Curves, Douglas-fir Cubic-foot Yield Curves, Mixed Species MAI Curves and Table, Douglas-fir MAl Curves and Table [2]
Creator:
Kimsey, M.
Date Created (ISO Standard):
2005-02-22
Description:
The collection and dissemination of ESI forest plot information regarding Psuedotsuga menziesii var. glauca in north Idaho relies entirely on a method developed by P. H. Cochran. The incorporation of the Cochran method was introduced to NRCS Idaho from NRCS Oregon with Technical Note 190-VI. Development of yield and site index curves by Cochran was based entirely on forest stands located on the east slopes of the Cascade Range and Blue Mountains of eastern Oregon / southeast Washington. Cochran's proposed site index and yield curves were well developed and suited for the forested landscapes used in his modeling efforts. However, forest stands of north Idaho and northwestern Montana are often dissimilar to their counterparts of the Cascades and Blue Mountains. This dissimilarity will inherently create significant predicted site index and yield error when using the Cochran method in north Idaho. Several USDA-USFS research projects specifically developed site index and yield curves for north Idaho. Research papers INT-347 (R.A. Monserud, 1985) and INT-394 (A. Stage et al., 1988) address these topics. Forest stands used to develop these models were located north from Grangeville to Porthill, Idaho and east to Libby, Montana. Most private and state forest management entities of north Idaho utilize the Stage and Monserud models for reporting yield and site index. This creates a communication breakdown between the NRCS and other forest management entities. Standardization of yield and site index reports by the NRCS is needed not only to prevent this from occurring, but also to improve rotation estimates, carbon sequestration estimates, and other naturals resource interpretations. Bringing the data up to consistent and accurate standards would improve the usability and acceptance of the NRCS Idaho soil survey product.
Subjects:
research (document genres) data modeling forest management statistics
Location:
North and Central Idaho; Eastern Washington; Western Montana; Northeastern Oregon
Publisher:
Intermountain Forest Tree Nutrition Cooperative, University of Idaho, College of Forest, Wildlife and Range Sciences, Moscow
Source:
Kimsey, M.J. 2005. Technical Report Douglas-fir Site Index, Cubic Foot Yield Curves, and Mean Annual Increment Conversions for Cochran to Monserud Timber Productivity Data. Technical Report. USDA-Natural Resources Conservation Service, Boise, ID.
Source Identifier:
Site_Index_Conversion_Mixed_Species_and_DF_Cubic_Foot_Yield_Curves_MAI_Curves_and Table_IFTNC_02_2005
Type:
Text
Format:
application/pdf

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Preferred Citation:
"Site Index Conversion, Mixed Species Cubic-Foot Yield Curves, Douglas-fir Cubic-foot Yield Curves, Mixed Species MAI Curves and Table, Douglas-fir MAl Curves and Table [2]", Idaho Forestry Research Collection, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/forestryresearch/items/forestryresearch943.html
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Educational use includes non-commercial use of text and images in materials for teaching and research purposes. Digital reproduction rights granted by University of Idaho Library. For other uses beyond educational use, please contact University of Idaho Library Special Collections and Archives Department at libspec@uidaho.edu.
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