The aim of this study was to determine the optimal cutting cycle in an uneven-aged beech forest in the North of Iran. First of all, a logistic growth model was determined for an uneven aged forest. Then, the stumpage price was predicted via an autoregressive model. The average stumpage price of beech was derived from actual timber, round wood, fire and pulpwood prices at road side minus the var...

soil is known as the base material for many structure, on the other hand, some soils cause problems for some structures such as roads. some types of soils absorb moisture and swell then they may shrink when losing water. the changes of moisture in these soil samples cause changes their volume and pressure to layers of the pavement and eventually leads to destruction of roads. therefore, it is n...

This paper describes a contextual classification approach to classify complex forest change classes. Multi temporal forest change classifications are performed comparing the 1989 baseline for the Kyoto definition of ARD (Afforestation, Reforestation and Deforestation) with the status in 2000 for test territories in Siberia with extensive ground truth information from forest inventory. The diffe...

Timber transportation is one of the most expensive activities in forest operations. Traditionally, the goal of forest transportation planning has been to find the combination of road development and harvest equipment placement that minimizes total harvesting and transportation costs. However, modern transportation problems are not driven only by economics of timber management, but also by multi...

Nacrtak Earthwork usually represents the largest cost component in the construction of low-volume forest roads. Accurate estimates of earthwork volume are essential to forecast construction costs and improve the financial control of road construction operations. Traditionally, earthwork volumes are estimated using methods that consider ground data obtained from survey stations along road grade ...

Canadian Forest Service (Pacific Forestry Centre), Natural Resources Canada, 506 West 18 Burnside Road, Victoria, British Columbia, V8Z 1M5, Canada 19 20 21 22 23 24 25 Pre-print of published version. Reference: Bolton, D.K., N.C. Coops, and M.A. Wulder. (2013). Measuring forest structure along productivity gradients in the Canadian boreal with small-footprint Lidar. Environmental Monitoring an...

ABSTRACT We developed a scheduling model (LMSCHED) that incorporates stream sediment and stream temperature goals into a forest planning process, allowing one to both evaluate the levels of these measures of aquatic habitat, and to set constraints regarding their upper limit. The scheduling model uses tabu search to identify feasible forest plans with respect to goals and constraints that are s...

a SILVIS Lab, Department of Forest and Wildlife Ecology, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI 53706, USA b U.S. Fish and Wildlife Service, NWRS, Region 3, 2630 Fanta Reed Road, La Crosse, WI 54603, USA c U.S. Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, La Crosse, WI 54603, USA d Nelson Institute Center for Climatic Research, U...