Tallgrass prairie

（重定向自Tall Grass Prairie）

Tallgrass prairie in relation to the Great Plains
  Shortgrass prairie
  Mixed grass prairie
  Tallgrass prairie

Bison grazing on the 158 km2 (39,000-acre) Tallgrass Prairie Nature Preserve in Osage County, Oklahoma

A pink wild onion (Allium stellatum) — blooms in the tallgrass prairie of Waubay Wetland Management District in South Dakota.

The tallgrass prairie is an ecosystem native to central North America. Natural and anthropogenic fire, as well as grazing by large mammals (primarily bison), were historically agents of periodic disturbance, which regulates tree encroachment, recycles nutrients to the soil, and catalyzes some seed dispersal and germination processes. Prior to widespread use of the steel plow, which enabled conversion to agricultural land use, tallgrass prairies expanded throughout the American Midwest and smaller portions of southern central Canada, from the transitional ecotones out of eastern North American forests, west to a climatic threshold based on precipitation and soils, to the southern reaches of the Flint Hills in Oklahoma, to a transition into forest in Manitoba.

单词	Tall Grass Prairie
释义	Tall Grass Prairie 原声例句托福听力备考练习 I'd like to say so, but there are cases of shrub expansion in other environments, such as semi-arid grassland and tall grass prairies. 我想这样说，但是在其他环境（例如半干旱风沙造地和高草草原）中也存在灌木丛扩张的情况。英语百科 Tallgrass prairie （重定向自Tall Grass Prairie） The tallgrass prairie is an ecosystem native to central North America. Natural and anthropogenic fire, as well as grazing by large mammals (primarily bison), were historically agents of periodic disturbance, which regulates tree encroachment, recycles nutrients to the soil, and catalyzes some seed dispersal and germination processes. Prior to widespread use of the steel plow, which enabled conversion to agricultural land use, tallgrass prairies expanded throughout the American Midwest and smaller portions of southern central Canada, from the transitional ecotones out of eastern North American forests, west to a climatic threshold based on precipitation and soils, to the southern reaches of the Flint Hills in Oklahoma, to a transition into forest in Manitoba.
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