The Research And Application On Protection And Development Of Eco-service Function Of Urban Emergency Water Sources

The sustained supply of water resources have a direct relationship with the city's social stability and sustainable economic development as a whole, but with rapid socio-economic development and population growth in cities, sustained supply of water resources do not kept pace with urban development, and it is highlighted by taches such as water pollution and security risks in urban water supply systems. Therefore, researches on water source conservation and security of urban water supply system, have a significant meaning for water security and sustainable development in cities.This paper selected the emergency water source, Hubian Reservoir of Xiamen island as a study objective, as its water quality status quo and treatment problems are representative of water source conservation and development issues in cities. In the guidance of principles like sustainable urban development, environmental economics, ecological value assessment theory of the ecosystem and so on, with the approaches of literature review, data collection, field studies and other methods combined, calculated on the basis of market-value method, shadow price method, shadow engineering method, travel costs method, opportunity cost methods as well as water environmental capacity model etc., thought of monetary calculation whether protecting Hubian Reservoir as a water source or developing it as landscape water body, this research carried out a detailed cost-benefit analysis, suggested an advantageous development strategy for the reservoir by comparison, and provided a direct and clear scientific evidence for decision makers. In addition, the paper also serves as a reference for protection and reasonable development of other water resources by analyzing the universality of Hubian Reservoir Case.Main research content and results include:(1) Concluding the research development of urban sustainable development theory and ecological value assessment method of the ecosystem through literature review and data collection; analyzing the importance of water source conservation and the service function system of different water bodies by combing research progress of service function of water ecosystem at home and abroad;(2) Analyzing the strategic significance of Hubian Reservoir under the view of sustainable development with the combination of historical changes, water features and comprehensive treatment and so on, as well as building cost-benefit systems under distinct development strategies;(3) Evaluating preliminarily the costs and benefits of Hubian Reservoir under the concept of protection and development at the same time by utilizing various ecological value assessment methods of the ecosystem;(4) Comparing the advantageous development strategies of Hubian Reservoir by cost-benefit analysis, and providing a reference for decision-makers by suggesting optimizing the development of reservoirs and the construction of the proposed security system from an academic perspective;(5) Analyzing the specialty and universality of Hubian Reservoir case and exploring the extensibility of research methods and research results of this paper.