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NEON Sampling Boundaries
Tower Airshed Boundary
This map depicts the spatial layout of this field site. Please note that some locations may have moved over time due to logistics, safety and science requirements.
This map was updated on January 11, 2019
Construction Status for this Site
The Abby Road (ABBY) field site is located in Yacolt Burn State Forest which is approximately 30 miles from Vancouver, WA and Portland, OR. Yacolt Burn State Forest is a relatively young growth industrial timber production forest. The Washington Department of Natural Resources (DNR) also allows an array of recreational activities including moutain biking, hiking and camping.
Total planned data products for this site: 112
Site Host & Access Site Host:
Washington Department of Natural Resources
Is additional non-NEON research allowed at this site?:
No additional research is allowed in this area at this time. The site hosts have only permitted NEON research activities and are not open to additional research.
Site Characteristics Latitude/Longitude:45.76243, -122.33033 Elevation:363 m Mean Annual Temperature:8C/46.4F Mean Annual Precipitation:2530 mm Dominant NLCD Classes:
Sampling plots at ABBY have been established across a mixed landscape of timber plantations ranging from clear cut stands to stands planted in the mid-1960s. Several recreational paths actually cross through the field site.
Yacolt Burn State Forest is named for the dozens of wildfires that ravaged Clark, Cowlitz and Skamania counties in southwest Washington during September 1902. With no organized system for fighting wildfires, the fires spread across nearly 239,000 acres and caused 38 deaths and widespread property losses. An extended period of hot, dry weather; high wind; an over-accumulation of timber harvest slash; and human carelessness are among the frequently cited causes of these fires. In response, the Washington Legislature established a state fire warden the following year. In 1908, private landowners formed the Washington Fire Protection Association and funded a system of fire wardens and a program of fire prevention on private lands.
The DNR replanted the forests and has maintained the area as working forest in order to:
Protect the long-term health of the forest's ecosytems
Generate revenue for the state
Provide safe, sustainable, and enjoyable recreational opportunities
Located in the foothills of the Cascade Mountains in a young forest, ABBY field site provides an interesting comparison to NEON's
WREF site which is located in a nearby old growth forest that is primarily used for research. Urban growth west of ABBY since the early 2000s has also brought neighborhoods closer to the forest. This growth has increased the demand for a variety of recreational activities. Urban planning is an active component of the land management of this ecosystem.
Vegetation and Soil
The dominant tree species are Douglas Fir which have been planted by the DNR since the Yakolt Burn in 1902. Many shrubs grow in the forest understory, including salal, Oregon-grape, red and big huckleberries, and west coast rhododendron. Dozens of plant species grow on the forest floor, including queencup beadlily, vanilla leaf, bracken fern, beargrass, twinflower, trillium, and little pipsissewa.
Typical of the Northwest, ABBY experiences very wet falls, winters, and springs; and very dry summers. The nearby Columbia River Gorge affects the valley’s climate, contributing to strong winds in any season and cool, wet weather in the winter. Average annual precipitation is about 2,540 mm annually, occurring as rain or snow during fall, winter, and spring. Summers are warm and dry. Cold air draining into the valley can bring frosts almost any time of year.
Data Collection Types
Remote sensing surveys of this field site collect lidar, spectrometer and high resolution RGB camera data.
The flux/meteorological tower at this site is 61’ with 5 measurement levels. The tower top extends above the vegetation canopy to allow sensors mounted at the top and along the tower to capture the full profile of atmospheric conditions from the top of the vegetation canopy to the ground. The tower collects physical and chemical properties of atmosphere-related processes, such as humidity, wind, and net ecosystem gas exchange. Precipitation data are collected by a tipping bucket at the top of the tower and a series of throughfalls located in the soil array.
This site has one phenocam on the top of the flux tower and one near the bottom of the tower.
This site has five soil plots placed in an array within the airshed of the flux tower. The following measurements are collected at the soil surface in each soil plot:
Photosynthetically Active Radiation (PAR) at soil surface
Soil heat flux
The following measurements are collected at multiple depths in each soil plot:
Field ecologists collect the following types of observational data at this site:
Other Domain 16 Field Sites
Core Terrestrial | Washington
Distance: 19 mi.
Core Aquatic | Wadeable Stream | Washington
Distance: 19 mi.
Relocatable Aquatic | Wadeable Stream | Oregon
Distance: 104 mi.
Colocated Research Organizations
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Field Operations Office
1211 SE Cardinal Court, Suite 120
Vancouver, WA 98683