Download or read book Forest Harvest Patterns on Private Land in Western Oregon from 1972 to 2002 written by Lisa R. VanNatta and published by . This book was released on 2005 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project examined the harvest patterns found on private forestland in western Oregon (46000 1cm2) between 1972 and 2002. The research addressed hypotheses concerning the behaviors of different classes of owners as defined by total amount of forestland owned. Existing forest stand disturbance data and ownership data were combined using GIS and the Fragstats program to determine the numbers of harvest patches and percentage of harvest in 250 individual forested parcels ranging from 40 to 110000 km2, for each of seven 3 to 6 year time intervals in the study period. Trends over time and spatial patterns of harvest by owner were assessed using maps and graphs. Private industrial forest owners as a group harvested at more rapid rate and created more patches than private non-industrial forest owners in western Oregon over the period 1972-2002. Private industrial owners did not differ in the numbers of patches created or the rates of harvest over the entire study period of 1972 to 2002, but small private industrial owners (less than 10,000 hectares), harvested at a significantly more rapid rate than other private industrial classes during the 1988 to 1991 time period. The number of patches created from 1972 to 2002 was significantly positively related to the area of the parcel but not related to the percentage of the parcel that was harvested from 1972 to 2002. Forest harvest rates increased when timber prices increased in the late 1980s, but did not respond to even higher timber prices in the early 1990s. Controlling for forest owner type and size, forest harvest on private lands was significantly lower and fewer patches were created in the Klamath Mountains province compared to the Oregon Coast Range and the western Cascades. Parcels in the margin of the Willamette Valley were 1.58 times more likely than other portions of western Oregon to have been harvested at rates exceeding 10% per year over some portion of the study period. These results generally indicate that private industrial owners have a range of behaviors that are partially explained by owner objectives (industrial vs. non-industrial) and size of landholdings. Based on these findings, predictions about future landscape patterns should take into account differences in objectives within the private industrial class of landowners. In particular, in western Oregon small private forest owners were quite sensitive to timber prices and uncertainty in public forest management policy in the late 1980s, whereas other private industry owners maintained fairly steady rates of harvest, and most private non-industrial owners refrained from harvest, over the 1972-2002 period.
Download or read book Free to grow written by and published by . This book was released on 1987 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Changes in the Non federal Land Base Involving Forestry in Western Oregon 1961 94 written by Daolan Zheng and published by . This book was released on 1999 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Timber Harvest Projections for Private Land in Western Oregon written by Darius Mainard Adams and published by . This book was released on 2002 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this analysis, volume-flow and market-based models of the western Oregon timber sector are developed. The volume-flow model finds the maximum, long-term, even-flow level of cut for each ownership (industry and non-industrial private forest). The market model simulates the interaction of log demand and timber owner supply to find the market balancing harvest quantity and log price. In both models, owner decisions on the intensity of timber management (silviculture) are made within the models consistent with owner objectives (volume or wealth maximization). Model projections suggest that western Oregon forest industry owners could sustain cut at recent (1995-1999) levels, stemming the 40-yr declining trend in their harvest. Nonindustrial private forest owners could raise harvests to near historical peak levels. These harvests could be maintained over the next five decades with no reduction in the growing stock inventory. Management would continue to shift toward the more intensive forms on both ownerships. The average age of the inventory would decline over the projection. Simulated riparian protection policies lower harvest roughly in proportion to the land base reduction and raise log prices. A policy to increase the minimum age of clearcut harvests would lead to large near-term reductions in industrial harvest but less marked reductions on NIPF lands. Prices would rise sharply in the near term. Over the longer term, the policy would act to expand inventory, raising harvest, and to depress prices.
Download or read book Timber Harvesting Practices on Private Forest Land in Western Oregon written by Gary Lettman and published by . This book was released on 1997 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Private Forestry in Western Oregon written by Gary Lettman and published by . This book was released on 1991 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guide to Geography Programs in the Americas written by and published by . This book was released on 2005 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimated Western Oregon Private Timber Harvest Values 1970 1972 and Their Implications for Yield Tax Policy written by David Klemperer and published by . This book was released on 1974 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Economic Assessment of Western Oregon s Private Forests with Streamside Management Restrictions written by Randall R. Schillinger and published by . This book was released on 1999 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Management restrictions are simulated on streamside acres owned by private interests in western Oregon to assess forest inventory and log market implications. A dynamic, nonlinear optimization model of western Oregon's softwood log market simulates the resource and economic impacts of set-aside and minimum harvest age restrictions on forest acreage within 40 meters of water on private lands from 1995 to 2045. Without restrictions, about 49 percent of log market surplus is attained by producers, while the consumers' (mills) portion is 17 percent and the trade sector earns the remaining 34 percent. Streamside management constraints take up to 19 percent of the forestland out of production. When this acreage is set-aside from harvest, periodic softwood harvest levels drop by 15 to 26 percent and log prices rise by 7 to 10 percent. The average value of a bare forest acre further than 40 meters from water rises by 13 percent. The increase in log prices and land values does not offset the loss in management choices. The present value of producers' surplus drops by 11 percent, while consumers' surplus drops by 30 percent.
Download or read book Timber Harvesting By Nonindustrial Private Forest Landowners In Western Oregon written by D. A. Cleaves and published by . This book was released on 1995 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Density Management in the 21st Century written by Paul D. Anderson and published by . This book was released on 2013 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Riparian Zone Forest Management and the Protection of Biodiversity written by and published by . This book was released on 2005 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Forests written by Douglas W. MacCleery and published by . This book was released on 2011 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Riparian Areas written by National Research Council and published by National Academies Press. This book was released on 2002-10-10 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Clean Water Act (CWA) requires that wetlands be protected from degradation because of their important ecological functions including maintenance of high water quality and provision of fish and wildlife habitat. However, this protection generally does not encompass riparian areasâ€"the lands bordering rivers and lakesâ€"even though they often provide the same functions as wetlands. Growing recognition of the similarities in wetland and riparian area functioning and the differences in their legal protection led the NRC in 1999 to undertake a study of riparian areas, which has culminated in Riparian Areas: Functioning and Strategies for Management. The report is intended to heighten awareness of riparian areas commensurate with their ecological and societal values. The primary conclusion is that, because riparian areas perform a disproportionate number of biological and physical functions on a unit area basis, restoration of riparian functions along America's waterbodies should be a national goal.
Download or read book Fremont Winema National Forest N F Toolbox Fire Recovery Project written by and published by . This book was released on 2004 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Riparian Management Area Guidebook written by BC Environment and published by Forest Service British Columbia. This book was released on 1995-01-01 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Helps managers, planners and field staff set and comply with Forest Practices Code standards for management of riparian management areas (RMAs).
Download or read book The Potential of U S Forest Soils to Sequester Carbon and Mitigate the Greenhouse Effect written by John M. Kimble and published by CRC Press. This book was released on 2002-09-25 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much attention has been given to above ground biomass and its potential as a carbon sink, but in a mature forest ecosystem 40 to 60 percent of the stored carbon is below ground. As increasing numbers of forests are managed in a wide diversity of climates and soils, the importance of forest soils as a potential carbon sink grows. The Potenti
