Urban Development and Sustainable Utilization of Water Resources in Small-and-Medium-Sized Basins of Southeast Coastal Areas:A Case Study in Ningbo City

The small and medium sized basins in southeast China are rich in water resources.With rapid urbanization in recent years,however,a series of water problems like deterioration of water quality,water shortage,intensification of flood disasters have restricted the development of urban economy.Taking a typical city of Ningbo as an example,this paper investigates the problems of water resources exploitation in the process of urbanization,explores the influences of urban development on water environment of rivers,and analyzes the impacts of urbanization on water ecology and floods.Based on the above analysis,the paper builds up a sustainable utilization system of water resources in Ningbo City according to modern system theory.The paper can contribute to urban sustainable development,water resources exploitation and water environment protection in the similar regions in southeast coastal basins.