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Ouachita National Forest is located in 13 counties in western and central Arkansas and two counties in southeastern Oklahoma. They are listed here in descending order of forestland within the county. Also given is their area as of 30 September 2007. [13] Roughly 80% of the forest's area is in Arkansas, with the remaining 20% in Oklahoma.
Quercus marilandica is a small deciduous tree growing to 15 meters (49 feet) tall, with bark cracked into rectangular black plates with narrow orange fissures. The leaves are 7–20 centimeters (3–8 inches) long and broad, and typically flare from a tapered base to a broad three-lobed bell shape with only shallow indentations.
In the United States, the forest cover by state and territory is estimated from tree-attributes using the basic statistics reported by the Forest Inventory and Analysis (FIA) program of the Forest Service. [2] Tree volumes and weights are not directly measured in the field, but computed from other variables that can be measured. [3] [4]
An extension in two branches of the Cross Timbers into southwestern Oklahoma, this area features reduced tree density and height, but also small forests dominated by sugar maple, bur oak, and live oak in deeper river canyons. The towns of Duncan, Oklahoma and Walters, Oklahoma, lie in this region. [2]
The first tree was an Austrian pine planted on the H.E. Curtis farm near Willow, Oklahoma, on March 18. [3] The project called for large-scale planting of trees across the Great Plains, stretching in a 100-mile wide zone from Canada to northern Texas, to protect the land from wind erosion.
The Piney Woods is a temperate coniferous forest terrestrial ecoregion in the Southern United States covering 54,400 square miles (141,000 km 2) of East Texas, southern Arkansas, western Louisiana, and southeastern Oklahoma.
The Geography of Oklahoma encompasses terrain and ecosystems ranging from arid plains to subtropical forests and mountains. Oklahoma contains 10 distinct ecological regions , more per square mile than in any other state by a wide margin. [ 1 ]
The Joseph H. Williams Tallgrass Prairie Preserve, in Osage County, Oklahoma near Foraker, Oklahoma, is the largest protected tract of tallgrass prairie in the world. . Managed by The Nature Conservancy, the preserve contains 39,650 acres (160 km 2) owned by the Conservancy and another 6,000 acres (24 km 2) leased in what was the original tallgrass region of the Great Plains that stretched ...