This paper presents estimates of foliage, branch and stem surface area, and ovendry weight, with estimates of precision of these statistics, for a 10-yr-old stand of eastern white pine on a 16-ha watershed at the Coweeta Hydrologic Laboratory in the Southern Appalachians. Three different methods were used to estimate the forest surface area and biomass: (1) stratified two-phase sampling, (2) tw...

Estimation of the Economic Value Soil Nutrition Protection in Zagros Forest Ecosystems (Case Study: Noujian Watershed Khoramabad)

The Algeria forest, particularly in the northeastern region, has undergone profound changes recent years. Oued Bouhamdane watershed a great forest potential, which is threatened by several factors of natural and human origin, resulting decrease cover. It requires adequate monitoring to support sustainable management this watershed, possible thanks satellite imagery. objective research st...

Airborne laser scanning (ALS) can be utilised to derive canopy height models (CHMs) for individual tree crown (ITC) delineation. In the case of forest areas subject to defoliation and dieback as a result of disease, increased irregularities across the canopy can add complications to the segmentation of ITCs. Research has yet to address this issue in order to suggest appropriate techniques to ap...

This paper looks at the economics of conversion and fragmentation of forest land. The forestry economics literature has generally focussed on the management of a single stand for timber and non-timber forest benefits with little attention being paid to forest level land use decisions, and in particular forest stand interactions. As noted by Bowes and Krutilla (1989), the focus on a single stand...

The valuation methods described in this chapter are based on the idea that forest ecosystems produce a wide variety of goods and services that are valued by people. Rather than focusing attention on the holistic value of forest ecosystems as is done in contingent valuation studies, attribute-based valuation methods (ABMs) focus attention on a set of attributes that have management or policy rel...

a Center for Forestry, University of California, Berkeley, CA 94720-3114, USA b Department of Global Ecology, Carnegie Institution, Stanford, CA 94305-4101, USA c Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA 94720-3114, USA d Department of Forest, Rangeland, and Watershed Stewardship, Colorado State University, Fort Collins, CO 80523-1472, ...