| 单词 | prairie formation |
| 释义 | > as lemmasprairie formation prairie formation n. (a) Geology a series of stratified deposits occurring on the prairies; (b) Ecology a plant community characteristic of the prairies. ΚΠ 1858 De Bow's Rev. Jan. 57 The mouth of the Kansas, where the unbroken prairie formation meets the river. 1907 F. E. Clements Plant Physiol. & Ecol. 226 In the prairie formation.., three characteristic societies of the spring aspect are the Astragalus, the Comandra, and the Lomatium societies. 1946 W. G. Wahlenberg Longleaf Pine App. XI. 315 Formation, Fayette. White sands and joint clays deposited by fresh or brackish water in a prairie formation of the Oligocene epoch. 1993 Jrnl. Biogeography 20 625/1 The boreal summergreen woodland and prairie formations..are in greater accordance with vegetation on the more detailed vegetation map. < as lemmas |
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