摘要
The Songhua River watershed plays a key role in the national development of China, owing to its unique natural condition and resources. In order to enable a combination control of the total amount of water pollutant discharge (TAWPD) in both the whole watershed and individual control units in the Songhua River watershed, an integrated prediction model (IPM) for optimizing distributions of the TAWPD was developed. The model was expected to facilitate scientific management and significant reduction of pollutant discharges. Based on the historic data (2011–2013) of Heilongjiang section in the watershed, the regional TAWPD and the optimization of its distributions in different control units were simulated by the IPM. By comparing the simulated results with the actual data for the base year 2013, the reasonability and reliability of the model was verified. Furthermore, the TAWPD in 2015 and the optimization of its distributions in 2020 were predicted for the control units of Heilongjiang section. The study demonstrated that the model was useful in providing decision-making support for planning and management of the Songhua River watershed.