classification of wetlands造句

例句与造句

1. Further, considering the definition of wetlands given by Cowden in 1979 for classification of wetlands in the US, three key attributes of hydrology ( the degree of flooding or soil saturation ), wetland vegetation ( hydrophytes ) and hydric soils have also been considered for identification.
2. In reality, there is no natural boundary between the classes that humans define on these gradients ( wetland / upland ), and this issue is highlighted by the U . S . Fish and Wildlife Service's definition from Classification of Wetlands and Deepwater Habitats of the United States, which defines wetlands as " lands transitional between terrestrial and aquatic systems . " Regulations to protect water quality and highway safety require that we create arbitrary boundaries within those gradients, but these boundaries are scientifically definable, and consist of areas where three criterion of the presence of hydric soils, the presence of wetland vegetation, and the presence of appropriate hydrology.
3. It's difficult to find classification of wetlands in a sentence. 用classification of wetlands造句挺难的