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The Texas Blackland Prairies are a temperate grassland ecoregion located in Texas that runs roughly 300 miles (480 km) from the Red River in North Texas to San Antonio in the south. The prairie was named after its rich, dark soil. [3] Less than 1% of the original Blackland prairie vegetation remains, scattered across Texas in parcels. [4]
Shaded relief map of the Llano Estacado. Texas contains a wide variety of geologic settings. The state's stratigraphy has been largely influenced by marine transgressive-regressive cycles during the Phanerozoic, with a lesser but still significant contribution from late Cenozoic tectonic activity, as well as the remnants of a Paleozoic mountain range.
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. [1]
The Big Thicket [3] is the name given to a somewhat imprecise region of a heavily forested area of Southeast Texas in the United States. This area represents a portion of the mixed pine-hardwood forests or "Piney Woods" of the Southeast US. [4]
East Central Texas forests are distinguished from the adjacent Texas blackland prairies and Western Gulf coastal grasslands by their greater tree density. On the other hand, they are more open and have a greater concentration of hardwoods than the forests of the Piney Woods. [1] The climate is hot and humid. [2]
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 ...
name = Texas Name used in the default map caption; image = USA Texas location map.svg The default map image, without "Image:" or "File:" image1 = Relief map of Texas.png An alternative map image, usually a relief map, which can be displayed via the relief or AlternativeMap parameters; top = 36.8 Latitude at top edge of map, in decimal degrees ...
The geography of Texas is diverse and large. Occupying about 7% of the total water and land area of the U.S., [1] it is the second largest state after Alaska, and is the southernmost part of the Great Plains, which end in the south against the folded Sierra Madre Oriental of Mexico.