3 edition of Photo stratification improves northwest timber volume estimates found in the catalog.
Photo stratification improves northwest timber volume estimates
Colin D. MacLean
by Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture in Portland, Or
Written in English
|Statement||Colin D. MacLean.|
|Series||Research paper PNW -- 150., Research paper PNW -- 150.|
|Contributions||Pacific Northwest Forest and Range Experiment Station (Portland, Or.)|
|The Physical Object|
|Pagination||10 p. ;|
|Number of Pages||10|
UPDATED: Febru This quarterly forecast includes our analysis of current economic conditions and our objective projections of future revenue for state trust funds and their beneficiaries. For Economic and Revenue Forecasts from and prior years, contact the Office of Budget and Economics by phone at , by fax at , or by email at. Centuries of Change in Pacific Northwest Forests: Ecological Effects of Forest Simplification and Fragmentation 5 wildlife, nesting/denning habitat, and contribution to vertical stratification, and deserve to be addressed in stand management (Bunnell et al. .
approach. This approach provides an overall estimate of timber volume, net growth, timber removal levels, and their spatial distribution across the state. In addition, the project identifies and leverages forest ownership to improve timber estimates by considering areas that are non-harvestable forestlands because of legal or policy reasons. The culture area approach was delineated at the turn of the 20th century and continued to frame discussions of peoples and cultures into the 21st century. A culture area is a geographic region where certain cultural traits have generally co-occurred; for instance, in North America between the 16th and 19th centuries, the Northwest Coast culture area was characterized by traits such as salmon.
5 The following acronyms are used in this guidebook: BA: Basal area is the cross-sectional area of a tree feet above ground. DBH: Diameter at breast height is the measurement of tree diameter feet from the ground. HDR: Height to diameter ratio is the ratio between a tree’s total height and its D H. LCR: Live crown ratio is the percent of a tree’s total height that has live, green. And then, there are different scales to estimate the volume in cut logs. Estimating the volume in a forest stand is more than simply adding up all the volumes of individual trees. There are too many! Trees in sample plots are measured. Statistical methods expand sample volumes to represent the whole timber stand or forest.
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Photo stratification improves northwest timber volume estimates paperback – january 1, by C.D. MacLean (Author)Author: C.D.
MacLean. Title. Photo stratification improves northwest timber volume estimates / Related Titles. Series: USDA Forest Service research paper PNW ; By. MacLean, Colin D. Pacific Northwest Forest and Range Experiment Station (Portland, Or.). Photo stratification improves northwest timber volume estimates Author: Colin D MacLean ; Pacific Northwest Forest and Range Experiment Station (Portland, Or.).
Photo stratification improves northwest timber volume estimates / By Colin D. MacLean and Or.) Pacific Northwest Forest and Range Experiment Station (Portland.
Abstract. no Topics: Aerial photography in forestry, Forests and forestry, Internet resource. Photo stratification improves northwest timber volume estimates / Colin D. MacLean. By Colin D. MacLean. Abstract. 10 p. Topics: Forests and forestry Author: Colin D.
MacLean. the original timber volume strata 5, 6, and 7 and use additional Forest-wide data to improve existing timber volume and slope information from the CLU database was combined with the original timber volume strata to create new timber volume new volume stratification provided statistically defensible.
sifications on the 6, photo points to provide current estimates of timber volume, growth, mortality, removals, and area attributes such as forest type, site class, and stand-size class.
’ An electronic version of tables in this report is available in Lotus spreadsheet format. Send computer disk and. menziesii forests in the Pacific Northwest, the rate of timber volume accumulation peaks between 70 and 90 years, and then decreases monotonically Curtis, However, direct field observations are lacking.
for stands) years old; therefore, estimates of tree volume growth rates are speculative Curtis and Marshall, Northwest Research Station, Portland, OR. The first phase 1 data source was the traditional FIA approach of using a photointerpreted grid; the second data source was the use of the National Land Cover Data set (NLCD) GIS layer for phase 1.
The inventory estimates used for testing were timberland area and growing-stock volume on timberland. Once upon a time the forests of the Pacific Northwest fueled the region both economically and culturally. During the post WWII era timber production dropped due to a variety of factors which will be examined below (Center for the Study of the Pacific Northwest).
The declining timber industry pitted various communities, industries and interest groups against one another. The primary objective of this project is to provide estimates of architectural and structural material quantities of a prototypical mid-rise commercial office building constructed of mass timber in the Pacific Northwest.
This material consumption data will be. The use of image segments in the feature extraction for the estimation of timber volumes using a Landsat TM image was investigated by applying the k nearest neighbour estimation method (knn) and Finnish National Forest Inventory (NFI) sample estimates of the volumes by tree species at the plot level were derived by means of the cross-validation technique.
Highlights Area-based estimates of potential logging residues were obtained using airborne laser scanning.
The accuracy of the estimates was comparable to those obtained for e.g. timber volume. Stratification according to site quality did not significantly improve the accuracy of the estimates.
Timber Management In The Pacific Northwest Region, Oral History Transcript / And Related Material, [FACSIMILE] [Walter H. ive Lund] on *FREE* shipping on qualifying offers. High Quality FACSIMILE REPRODUCTION:Lund, Walter H.
ive:Timber Management In The Pacific Northwest Region. Stratification of forest land for timber management planning on the western national forests / J.H. Wikstrom and S. Blair Hutchison by Wikstrom, John H; Hutchison, S.
Blair (Samuel Blair), ; Intermountain Forest and Range Experiment Station (Ogden, Utah) 1n. Stand volume per acre 32 Photo stratification for ground cruising. _ 38 him to improve the efficiency of forest in-ventories by distributing field samples on the basis of photo stratifications.
In some instances, he may even be able to estimate timber volumes directly from the photographs. The State Forest Inventory (SFI) in the Russian Federation is a relatively new project that is little known in the English-language scientific literature. Following the stipulations of the Forest Act ofthe first SFI sample plots in this vast territory were established in The 34 Russian forest regions were the basic geographical units for all statistical estimates and served as a.
The VRI is a photo based, 2-phase program. Phase 1 involves photo interpretation, delineating polygons of homogenous land cover types and providing estimates of the vegetation attributes for each polygon.
Phase 2 includes ground sampling activities. The Volume Audit (VA) activity samples a random subset of polygons to verify the.
After further reductions in logging levels inthe timber industry has claimed that the Northwest Forest Plan has failed to provide a steady, reliable supply of wood for the region's mills. President George W. Bush's recent efforts to increase commercial thinning and salvage logging as a way to reduce forest fires have initiated another.
Identifications of Timber Luster- is the ability to reflect light beam pointedly. Workability- the relative case in which wood is shaped cut and fastened together than the others. Warping- is the general term used to describe any variation from a true surface.
Moisture content- is a percentage of the mass of water over the mass of wood fibre in. Object moved to here.Estimates for timberland area, timber volume, and volume of down wood were calculated for California’s North Coast Survey Unit of million hectares. The estimates were compared on the basis of standard errors, conformance to FIA accuracy standards, and gain in precision achieved by stratification relative to simple random sampling and to.Stratification of the target population improves sampling efficiency by grouping similar sub-populations that might exist within a general population.
In the Fort St. James Forest District, we can assume that the adjustment ratio between ground volume and photo-interpreted volume will be different in stands with a.