流域

流域 refers to the area of land where all the water from rain or snowmelt drains into a single river, lake, or ocean. It is a geographical term used to describe the entire region that contributes water to a specific water system.

The character 流 (liú) means 'to flow,' and 域 (yù) means 'area' or 'region.' Together, they form a term that describes the flowing area of water drainage. This term is commonly used in geography and environmental science.

In China, understanding river basins is essential for managing water resources, controlling floods, and planning infrastructure. The concept of a river basin is also important in discussions about ecological conservation and sustainable development.