ravine的意思|示意

Ravine is an English word derived from the French word “raviner”, which means “to cut into a steep sided valley”. In geography, a ravine is a deep, narrow valley with steep sides which is usually created by the erosive action of running water. Ravines are sometimes found in karst topography.

Ravines are created when the water flow has a particularly high rate or when the soils or rock strata on either side of the stream are particularly erosive. When water flows at a high rate, it will cause scouring and steepening of the stream banks. When the soils or rock strata on either side of the stream are particularly erosive, they will contribute to the downhill erosion of the stream banks.

In the United States, ravines are commonly found in the Appalachian Mountains, the Rocky Mountains, and the Great Plains. Ravines not only form a scenic backdrop to the environment but are also important in regulating the flow of water and in providing important ecosystems. The steep slopes of ravines are often important locations for plant and animal species that require specific microclimates and soils. Many of these species are considered to be threatened or endangered, and so their protection is important.

Ravines can also be found in urban areas, and can be an important part of the urban landscape. Ravines are often used to provide a sense of scale to the urban environment and to provide a space for recreation and exercise.

In summary, ravine is a term used to describe a deep, narrow valley with steep sides, which is usually created by the erosive action of running water. In the United States, ravines are commonly found in the Appalachian Mountains, the Rocky Mountains, and the Great Plains and are important for regulating the flow of water, providing important ecosystems, and providing a sense of scale to the urban environment.