The fluvial hydrosystem

摘要: Rivers are a popular source of fascination because their changing moods from headwater stream to large lowland rivers and quiet summer brooks raging flood torrents. The character river changes continually, day night, day, season year year. It is this dynamism that attracted the attention naturalists geologists in 19th century, today provides focus for research by biologists, fisheries scientists, geomorphologists hydrologists. However, interest more than curiosity; most nations dependent on sustainable management.