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The Texas Blackland Prairies ecoregion covers an area of 50,300 km 2 (19,400 sq mi), consisting of a main belt of 43,000 km 2 (17,000 sq mi) and two islands of tallgrass prairie grasslands southeast of the main Blackland Prairie belt; both the main belt and the islands extend northeast–southwest.
The maps have county borders but no names; however, they detail rivers, lakes, and major cities, and contain photographs. There is also a Texas ecoregion report PDF which describes Cross Timbers vegetation and other features in much more detail than the maps. Under "Oklahoma," there is no ecoregion report PDF yet but more details are contained ...
The small, disjunct areas of this ecoregion have a blend of characteristics from the Texas blackland prairies and the East Central Texas forests. The northern two outliers, north of the Sulphur River, occur on Cretaceous sediments, while south of the river, Paleocene and Eocene formations predominate. A mosaic of forest and prairie occurred ...
32 Texas Blackland Prairies; 33 East Central Texas Plains; 34 Western Gulf Coastal Plain; 36 Ouachita Mountains; 37 Arkansas Valley; 38 Boston Mountains; 39 Ozark Highlands; 51 North Central Hardwood Forests; 52 Driftless Area; 53 Southeastern Wisconsin Till Plains; 54 Central Corn Belt Plains; 55 Eastern Corn Belt Plains
The belt regions of the United States are portions of the country that share certain characteristics. The "belt" terminology was first applied to growing regions for various crops, which often follow lines of latitude because those are more likely to have similar climates. The allusion was to a long clothing belt, as seen on a map.
With 39,000 acres (160 km 2), the Tallgrass Prairie Preserve in north-central Oklahoma is the largest protected area of tallgrass prairie in the world and is part of an ecosystem that encompasses only 10 percent of its former land area, once covering 14 states. [14]
The area was incorporated into Oklahoma Territory and later split into three counties when Oklahoma obtained statehood in 1907. As of the 2020 United States census, the region has a population of 28,729, and Texas County is the only county in Oklahoma to have a plurality of Hispanic residents, which make up 48.1 percent of the county's ...
This large grassland area with very few trees runs north–south from central Nebraska through central Kansas and western Oklahoma to north-central Texas, covering 109,000 sq mi (282,000 km 2).