Author(s): Xing Chen, Xuezhen Xiong, Qin Xu, Li Wang
Linked Author(s): Xing Chen
Keywords: Water resources planning, water management, scenario analysis, water supply and demand.
Abstract: With the fast urbanization expansion, shortage of water resources and deterioration of water environment have become limiting factors of the social and economy development in some area of China. It is necessary to implement scientific as well as practical water resources planning and management measures to balance the contradiction between water supply and demand, which is crucial for regional aquatic environmental security and is the foundation of sustainable urban development. Water shortage problem of the study area, Linhai city in Zhejiang province, is caused by lack of available water along with inadequate water utilization engineering. The economic booming of the study area in recent decade has resulted in growing water demand in industry and agriculture. The layout of the high water consumption industries is inconsistent with the distribution of water resources. The variation coefficients of water resources between divisions keep increasing and will reach 0. 47 and 0. 51 by 2020 and 2030. In addition, increasing pollutants and sewage discharge reduce high-quality water availability and aggravated the contradiction of urban water supply. In this paper, water conservation, rainwater utilization and sewage treatment are considered as a comprehensive water supply system. Evaluation model for water resources allocation is constructed including 17 indexes belonging to four criteria layers as society, economy, ecology and water resources development. Four water planning scenarios were analyzed to explore solutions to coordinate dilemma between water resources management and urban development. TOPSIS method was adopted to grade water resources allocation schemes. The results show that the water transfer engineering is imperative for Linhai city to support social and economy sustainable development. While water saving measures can compensate water shortage crisis, the measures are beneficial to the ecological environment by pollution abatement additionally. The research results could provide valuable perspectives in water resources planning and management for other cities facing the same water problems
Year: 2017