Field experiments on fluctuation velocities were carried out at the section Huanglingmiao of stemstream of Yangtze River with an Acoustic Doppler Current Profile (ADCP).
The paper puts forward and calculates the lowest environmental water demand in river course of stemstream according to the features of ecosystem and environment of lower reach of Yangtze River.
依据长江下游生态环境特点提出并概算了长江下游干流河道内最小环境需水量。
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Stem of character — life will be indefinite and purposeless — like a body of stagnant water, instead of a running stream doing useful work and.