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Oklahoma has 41 state parks, two national protected forests or grasslands, [12] and a network of wildlife preserves and conservation areas. Six percent of the state's 10 million acres (40,000 km 2 ) of forest is public land, [ 11 ] including the western portions of the Ouachita National Forest , the largest and oldest national forest in the ...
Oklahoma — the Wichita Mountains, and the Great Salt Plains Lake in Salt Plains National Wildlife Refuge; Nebraska — the Platte River State Park near Louisville, Nebraska, and the Rainwater Basins to the south; Kansas — the Cheyenne Bottoms, the Quivira National Wildlife Refuge near the town of Stafford, the Red Hills, and the Smoky Hills ...
In the United States, the EPA and the United States Geological Survey (USGS) are the principal federal agencies working with the CEC to define and map ecoregions. Ecoregions may be identified by similarities in geology , physiography , vegetation , climate , soils , land use , wildlife distributions, and hydrology .
Alaska is the most biodiverse state with 15 ecoregions across three biomes in the same realm. California comes in a close second with 13 ecoregions across four biomes in the same realm. By contrast, Rhode Island is the least biodiverse with just one ecoregion—the Northeastern coastal forests —encompassing the entire state.
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 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 High Plains ecology region is designated by 25 on this map. Childress County, Texas, June 1938.. The High Plains are a subregion of the Great Plains, mainly in the Western United States, but also partly in the Midwest states of Nebraska, Kansas, and South Dakota, generally encompassing the western part of the Great Plains before the region reaches the Rocky Mountains.
Central Oklahoma is a humid-subtropical region dominated by the Cross Timbers, an area of prairie and patches of forest at the eastern extent of the Great Plains. [2] The region is essentially a transition buffer between the wetter and more forested Eastern Oklahoma and the semi-arid high plains of Western Oklahoma, and experiences extreme swings between dry and wet weather patterns.