除去农业需要用水外,以城市为中心的工业用水,生活用水,正在大量急速增加,在我国城市部分是向下游伸展的,上游的水源森林是存贮水量、涵养水源的地域。而下游城市部分,则是消费水的地域。水源地区位于山间地带,离开城市较远,是人口密度较小的地区。 Apart from agriculture, which requires water, urban-centered industrial water and domestic water are rapidly increasing in large numbers, extending downstream in some urban areas of our country. The upstream water source forests are areas that store water and conserve water. The downstream part of the city, it is the consumer water area. The water area is located in the mountainous areas, far from the city, is a population density of smaller areas.