Classified Management of Water Environment in Jilin Section of Songhua River
Based on nine years’monitoring data,water quality of Jilin section of Songhua River was analyzed with factor analysis (FA)method and classified management model of water environment. Contribution rate of water pollution factors were calculated quantitatively,with division of all kinds of water environmental management areas based on FA and classified management model. The corresponding measures of water environment management were proposed. Results showed that main pollution which was permanganate index,petroleum oil and suspended substance is characterized as industrial point pollution and non -point source pollution resulted from soil and water erosion. Development of the study has certain reference to implement gross control of regional water environment,and can implement the scientific classified management on Songhua River in Jilin Province.