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1. Woodland Ecoregions: Pineywoods
and Post Oak Savannah
•Thick pine forests and deciduous trees (oak,
maple) swampy bottomlands
•Ample precipitation and abundant vegetation
•Little erosion due to plant roots holding soil
•Flooding common
2. Gulf Coast Prairies and Marshes
•Prairie-deep fertile soil,
•Coastal wetlands-marshes & swamps-treeless,
islands, bluffs, sand bars, deltas
•Wave erosion
3. Plains: High Plains and Rolling Plains
•Treeless Prairie/ Grasses/ Low plants
•Semi-dry
•Predominantly flat
•East and West section divided by deep canyons
•Wind is primary agent of erosion
•Tornadoes common (tornado alley)
Palo Duro
Canyon
3. Plains: South Texas Plains
•Erosion from Hill Country
•Dry/ Bush Country
•Rio Grande Valley has patches of Palm Trees and
soil is good for planting crops
4. Prairie Regions: Blackland
Prairies, Cross timbers and Prairies
•Our ecoregion here in McKinney
•Rich, fertile, black soil
•Gently rolling hills, grasses
•Erosion from human activity: urbanization and
farming practices---reduce by planting trees/plants
5. The Plateau Region:
Edward’s Plateau
•Large granite domes and stony hills, steep
canyons
•Enchanted Rock –exfoliates-large sheets of rock
break off due to pressure
•Karst area=caves and flowing groundwater
• Sinkholes
6. Desert/Montane: Trans-Pecos
•Big Bend, Chihuahan Desert and Rio Grande
River; sand dunes and salt flats
•Guadalupe Mts, Davis Mts (volcanic activity)
•Short grass and brush, cactus
•Acid rain wears down limestone cliffs
•Water is primary agent of erosion
•Wind abrasion also very common