Mainstream swing flow rate time-order character based river type classifying method

The invention relates to the technical field of water conservancy projects, and specifically relates to a mainstream swing flow rate time-order character based river type classifying method. The method comprises the steps of dividing a researching river section into an upstream river section and a downstream river section; correspondingly drawing wavelet transform coefficient real part isoline maps based on Morlet wavelet function; obtaining the distribution and phase structures of characteristic flow rate of the mainstream swing of the downstream river section at different time scales in eachyear, and comparing and analyzing; and if the characteristic flow rates, influencing the mainstream swing, of the upstream river section and the downstream river section, are at the same grade, and the positive phase energy centers of the characteristic flow lasting day series of the mainstream swing under different flow rate grades occur in the same year, namely, the upstream river section and the downstream river secti