The rational zoning of aquatic ecological function fully reflects the water environment management idea of “grading

classification

zoning

and staging

” which is an important basis for the management of aquatic environment and water ecosystem. In this paper

the characteristics of natural environment

water ecological factors

and socio-economic activities of the Songhua River basin are analyzed by data fusion technology on ArcGIS software. Based on the three levels of aquatic ecological function in Songhua River Basin

the ecological function importance level of five kinds of aquatic ecological function was evaluated

including habitat maintenance

water conservation

biodiversity maintenance

agricultural production maintenance

and urban support. According to the evaluation results

the Songhua River Basin was divided into 65 water ecological functions of level 4 zoning. Compared with previous methods

this study utilized the data fusion technology

which considered the natural ecology and the impact of social economic factors on the function importance level. The process of the evaluation is more intuitive

and the results are more reasonable and effective. Based on the analysis of the zoning results

this paper provides some reasonable suggestions for the management of the aquatic environment of Songhua River Basin. The results can help identify the characteristics and functional status of the water ecosystem

lay a foundation for the river health evaluation

and provide an important basis for the scientific management of the aquatic ecosystem in the Songhua River Basin.