USDA Forest Service

Land and Watershed Management

Land and Watershed Management Program
Pacific Northwest Research Station
Olympia Forestry Sciences Laboratory
  3625 93rd Ave. SW
Olympia, WA 98512
(360) 753-7747
Corvallis Forestry Sciences Laboratory
  3200 SW Jefferson Way
Corvallis, OR 97331
(541) 750-7250
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Pacific Northwest Research Station logo which links to the Station's Web site.

United States Department of Agriculture Forest Service.

Genetic and Silvicultural Foundations for Management

Silvicultural Research

Long-Term Productivity

Experiments on three sites address important questions about the long-term effects of management on site productivity, nutrient budgets, and soil processes. These studies are part of the Pacific Northwest component of The North American Long Term Soil Productivity Experiment network. The studies are:

Conifer Regeneration in Second-Growth Douglas-fir Stands

In the Belowground Competition Study on Fort Lewis (WA), we tested the influences of root competition on the growth of Douglas-fir saplings.

The Overstory Density Study on the Washington Department of Natural Resources (DNR) Capitol Forest is investigating the effects of overstory density levels on tree growth and microclimate.

Oregon White Oak

Oregon white oak (or Garry oak) is the only oak species native to British Columbia, Washington, and northern Oregon. We are studying many aspects of Oregon white oak biology and management.

Silvicultural Options for Harvesting Young-Growth Douglas-fir Forests

This operational-scale Silvicultural Options Study on the Washington DNR Capitol State Forest examines six different harvest treatments. The issues leading to the development of this study are discussed in an edition of the PNW Research Station's Science Findings.

Alternative Silvicultural Treatments for Young Plantations in the Pacific Northwest

Young conifer plantations can be treated in ways that will result in different stand structures, tree characteristics, and vegetation development in the future. Five treatments are being evaluated at two sites:

Managing for Late-Successional Attributes

The Olympic Habitat Development Study is a cooperative study with the Olympic National Forest and the Olympic Natural Resources Center.  The study tests alternative treatments in 30- to 70-year-old forests to accelerate the development of stand structures and plant and animal communities associated with late-successional (old-growth) forests. Additional information on variable-density management is available.

For an on-line interactive experience, visit the Olympic Habitat Development Study Virtual Trail!

Forest Visualization Models and Remote Sensing Research

LIDAR and Remote Sensing

LIDAR (LIght Detection And Ranging) is a powerful remote sensing technology that bounces laser pulses off the vegetation and ground as a data collection aircraft flies across a landscape.

Stand Visualization Models

Computer-generated stand and landscape visualization models are used to communicate stand conditions, silvicultural treatments, and forest management alternatives to a variety of audiences.


USDA Forest Service - GenSilv Team
Last Modified: Saturday, 15 October 2016 at 18:38:02 CDT

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.