An annual runoff forecasting method is presented based on unit root test, cointegration test and error correction model of the upper and lower reaches of the Second Songhua River.

• 摘要介绍了协整分析理论，结合第二松花江流域上下游的年径流量，阐述了单位根检验、协整检验、误差修正模型的理论与分析方法。