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Long Valley Experimental Forest
The Long Valley Experimental Forest was established in
1936 as a counterpart to Fort Valley Experimental Forest,
because it is on contrasting soils (limestone/sandstone
derived as opposed to basalt-derived clay loam), and
because it was representative of some of the best sites and
stands of ponderosa pine on the Coconino and Sitgreaves
National Forests. It has been used for thinning, grazing,
and regeneration studies for many years.
Soils
The soils are derived from limestone and are classified as
Typic Cryoboralfs.
Vegetation
Ponderosa pine stands, unburned since 1913, and not
grazed since the late 1970s, are the dominant vegetation
on the forest.
Research, Past and Present
Research activities at Long Valley include a rangewide
provenance planting of ponderosa pine, a burning
interval effects study, and a growth history study.
Facilities
Long Valley is located about 96 km southeast of Flagstaff,
Arizona, just above the Mogollon Rim, and comprises
two sections (518 ha).
Lat. 34°33'44" N, long. 111°20'25" W
Contact Information
Long Valley Experimental Forest
US Forest Service
Rocky Mountain Research Station
2500 South Pine Knoll
Flagstaff, AZ 86001-6381
Tel: (928) 556-2176
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