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A density-dependent matrix growth model of uneven-aged loblolly pine stands was developed with data from 991 permanent plots in the southern United States. The model predicts the number of pine, soft hardwood, and hard hardwood trees in 13 diameter classes, based on equations for ingrowth, upgrowth, and mortality. Projections of 6 to 10 years agreed with(More)
Data from a large-scale oontingent valuation study are used to investigate the effects of forest attribum on willingness to pay for forest rccroation in Ireland. Iu particular, the presence of a nature reserve in the forest is found to significantly incseasc the visitors' willingness to pay. A random utility model is used to estimate the welfare change(More)
Asian gypsy and nun moth ~ntroductlons Into the Unrted States. possrbly arriting 011 imposted Slbertarl coniferous logs, threaten don~estrc forests and product ~narkets and could habe global market consequences. We simulate, using the Global Forest Products Model (a spatial equilibrium model of* the morld forest sector), the consequences under current(More)
aBSTraCT The possible impact of Nectria fuckeliana Booth on the forests and forest industries of New Zealand, a significant exporter of industrial roundwood, was estimated for different scenarios of the spread of the fungal pest and trade measure responses in export markets. An economic model was used to assess the direct effect of the pest and the(More)
BACKGROUND Forests of the Midwest U.S. provide numerous ecosystem services. Two of these, carbon sequestration and wood production, are often portrayed as conflicting. Currently, carbon management and biofuel policies are being developed to reduce atmospheric CO2 and national dependence on foreign oil, and increase carbon storage in ecosystems. However, the(More)
The theory of demand and supply implies a positive relationship, or ''price transmission'' between the prices of products at different stages of manufacturing. This relationship was investigated with quarterly prices of softwood stumpage in the US South, and national prices of forest products, from 1977 to 2002. All prices, net of inflation, were found to(More)
An ordered-probit model was developed to predict tree grade from tree-and stand-level variables, some of which could be changed by management. Applied to uneven-aged mixed loblolly (Pinus tuedu L.)-shortleaf pine (Pinus echinatu Mill.) stands, the model showed that the grade of pine trees was highly correlated with tree diameter, tree height, and stand(More)
SUMMARY Three studies of the global economic implications of eliminating illegal logging are summarized. Processors of illegally sourced wood would lose from the elimination of illegal logging through high prices for logs and decreased production of wood products. Associated with these changes could be losses in employment and income. Beyond these losses to(More)
A working definition of non-timber value is the difference between the revenues attainable by implementing an infinite horizon timber revenue maximizing cutting rule, and the value of the observed harvest. This non-timber value was estimated for the stands of the Forest Inventory Analysis data in the maple-beech-birch type in Wisconsin. Non-timber values(More)