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在测定了伊春河不同季节河水溶解态有机碳（ＤＯＣ）含量和流量的基础上，探讨了ＤＯＣ含量与流量的关系和时空变化规律，并计算了伊春河ＤＯＣ输出通量。研究结果表明，非冰封期伊春河ＤＯＣ主要来自外源，其含量从上游至下游逐渐升高。ＤＯＣ含量和变速均与流量密切相关，但较流量波动滞后约８ｈ。据此建立的双曲线方程可用来估算ＤＯＣ含量和输出通量。在伊春河封冻之后，外源被完全阻断，河水ＤＯＣ含量仅受内源控制，因而与流量成反比。据计算，伊春河ＤＯＣ年输出通量为７１１３ｔ，相当于２．８８ｇＣ／ｍ２。其中９０％以上集中在雨季的５个月中。
Based on the determination of dissolved organic carbon (DOC) content and flow rate in different seasons of Yichun River, the relationship between DOC content and flow rate and the temporal and spatial variation were discussed, and the DOC output flux of Yichun River was calculated. The results show that the non-ice Yichun DOC mainly from exogenous DOC, its content increased gradually from upstream to downstream. DOC content and speed are closely related with the flow rate, but lags behind the flow fluctuation by about 8h. The hyperbolic equation built from this can be used to estimate the DOC content and output flux. After the Yichun River was frozen, the exogenous sources were totally blocked, and the river water DOC content was controlled only by the endogenous source, which was inversely proportional to the flow rate. According to calculation, Yichun River DOC annual output flux of 7113t, equivalent to 2.88gC / m2. Over 90% of them are concentrated in the five months of the rainy season.