Rebecca Ralston, Joseph Buongiorno, Jeremy S. Fried. (2004). Potential yield, return, and tree diversity of managed, uneven-aged Douglas-fir stands. Silva Fennica vol. 38 no. 1 article id 435. https://doi.org/10.14214/sf.435

Keywords: diversity; simulation; uneven-aged management; Douglas-fir; WestPro; economics

Abstract | View details | Full text in PDF | Author Info

The effects of different management regimes on uneven-aged Douglas-fir stands in the Pacific Northwest of the United States were predicted with a simulation model. Management alternatives were defined by residual stand structure and cutting cycle. The residual stand structure was set by basal area–diameter-q-ratio (BDq) distributions, diameter-limit cuts (assuming concurrent stand improvement), or the current diameter distribution. Cutting cycles of 10 or 20 years were applied for 200 years. The current diameter distribution was defined as the average of the uneven-aged Douglas-fir stands sampled in the most recent Forest Inventory and Analysis conducted in Oregon and Washington. Simulation results were compared in terms of financial returns, timber productivity, species group diversity (hardwoods vs softwoods), size class diversity, and stand structure. Other things being equal, there was little difference between 10- and 20-year cutting cycles. The highest financial returns were obtained with either a 58.4 cm diameter-limit cut, or a BDq distribution with 8.4 m2 of residual basal area, a 71.1 cm maximum diameter, and a q-ratio of 1.2. Using the current stand state as the residual distribution was the best way to obtain high tree size diversity, and high species group diversity. Several uneven-aged regimes gave net present values comparable to that obtained by converting the initial, uneven-aged stand to an even-aged, commercially thinned, plantation.

Ralston, Dept of Forest Ecology and Management, University of Wisconsin, Madison, WI 53706, USA E-mail: rr@nn.us
Buongiorno, Dept of Forest Ecology and Management, University of Wisconsin, Madison, WI 53706, USA E-mail: jbuongio@facstaff.wisc.edu
Fried, USDA Forest Service, Pacific Northwest Forest Experiment Station, Forest Inventory and Analysis Program, P.O. Box 3890, Portland, OR 97208, USA E-mail: jsf@nn.us

Click this link to register to Silva Fennica.

If you are a registered user, log in to save your selected articles for later access.

Contents alert

Your selected articles
Send to email

Uusitalo J., Ala-Ilomäki J. (2013) The significance of above-ground biomass, moistu.. Silva Fennica vol. 47 no. 3 article id 993 (remove) | Edit comment

Magnussen S., (2013) An assessment of three variance estimators for t.. Silva Fennica vol. 47 no. 1 article id 925 (remove) | Edit comment

Finnish Society of Forest Science ., (1991) A seminar on development of forest scientific pu.. Silva Fennica vol. 25 no. 1 article id 5439 (remove) | Edit comment

Holopainen V., Nyyssönen A. et al. (1984) The 75th Anniversary volume of the Society of Fo.. Acta Forestalia Fennica vol. 0 no. 190 article id 7645 (remove) | Edit comment

Jalkanen R., Hicks S. et al. (2008) Past pollen production reconstructed from needle.. Silva Fennica vol. 42 no. 4 article id 230 (remove) | Edit comment

Heikurainen Leo., (1980) Drainage condition and tree stands on peatlands .. Acta Forestalia Fennica vol. 0 no. 167 article id 7614 (remove) | Edit comment

Palo M., (1974) Goal-setting for Finnish forest research policy .. Acta Forestalia Fennica vol. 0 no. 142 article id 7576 (remove) | Edit comment

Ojansuu R., Henttonen H. (1983) Estimation of the local values of monthly mean t.. Silva Fennica vol. 17 no. 2 article id 5183 (remove) | Edit comment

Silvola J., Ahlholm U. (1996) Effects of CO2 concentration on the nutrition of.. Silva Fennica vol. 30 no. 2–3 article id 5589 (remove) | Edit comment

Paavilainen E., (1967) Book review: Crop Responses to Water at Differen.. Silva Fennica vol. 1 no. 4 article id 4758 (remove) | Edit comment

Mandre M., Klõseiko J. et al. (1996) Assessment of CO2 fluxes and effects of possible.. Silva Fennica vol. 30 no. 2–3 article id 5593 (remove) | Edit comment

Lakari O. J., (1920) Activities of Finnish Society of Forest Sciences.. Acta Forestalia Fennica vol. 14 no. 5 article id 7038 (remove) | Edit comment

Silfverberg K., (1995) Forest regeneration on nutrient-poor peatlands: .. Silva Fennica vol. 29 no. 3 article id 5557 (remove) | Edit comment

Follow @SilvaFennica