Study On Allocation And Assessment Methods Of Water Resources Sustainable Utilization In Dalian City

Water resources is the irreplaceable natural resources for human survival and development, and also, it is the material basis to achieve sustainable development of social and economic, the strategic economic resources, the organic component of comprehensive national power, and the control factors of the coordinated development between population, economy, society, resource and environment. With the development of economic society, the development idea and mode of Dalian are in ceaseless innovation, the new idea of global development was proposed, and the new mode of the reform of management system was startup, in order to realized the new span of scientific development. This new span, changes the existing water resources development and utilization conditions greatly and made the water resources shortage problems continue to highlight, is to be the major problem which restrict the sustainable development of regional economy and society. Consequently, issues of water resources sustainable utilization in Dalian city are need to study under the situation of new development, in order to meet the new requirements of the new measures on water resources as soon as possible, and support the sustainable development of regional economic and social. This paper analyze the research status and development trend of the development and utilization of water resources at home and abroad, according to the existing problems, select Dalian city as the study area, guided by the theory of sustainable development, analyze the demand of water resources for sustainable development of social economy and the impact of climate change and human activities on water resources. The study of the sustainable use of water resources in Dalian city are in three aspects:rational allocation of water resources, sustainable utilization evaluation of water resources and the corresponding countermeasures for sustainable utilization. In this paper, the main research contents and results are as follows.(1) The overall goal of the development of social economy in Dalian city are analyzed and forecasted, according to the new idea of global development and the new mode of the reform of management system and national economic and social development plan. Meanwhile, main water-saving control indexes of Dalian was identified, according to the history water use data and social economic index, and fully considering the water-saving measures, limit of high water consumption industries development, implement the total amount control of water consumption strictly. The new demand of water resources for Economic and social sustainable development in Dalian was to make clear, by forecasting the water demand of living, production and ecology in Dalian in the use of Rating method and analyze the result rationality from many aspects such as the total water requirement, water use structure, water index, and so on.(2) How to evaluate influence of climate change and human activity on water resource objectively is the important and basic problem of sustainable utilization of water resources in Dalian city. To solve this problem, this thesis analyzed the characteristics and laws of Climate Change and Human Activity in Dalian city and researched impact of climate change and human activity on water resource quantity in Dalian city using statistical analysis method based on information of rainfall and runoff of50years. Simulating rainfall runoff process of the Biliu River through model revealed the connection of climate change, human activity and water resources quantity, meanwhile, estimated the influence of climate change for water inflow of control section in future.(3) In order to reflect the important position and the value of transferring water in water resources allocation fully, also, to avoid the waste of water resource caused by distribution of transferring water according to demands, this paper built a model of water resources rational allocation based on the distribution of transferring water in the process of regional water resources allocation According to the principle of allocation of transferring water and wishful thinking of decision maker and society, economy, current water using situation of the city, we built a model of distribution of transferring water and determine comprehensive weight of every goal and solved it. A multi-objective optimal allocation of Water Resources was developed by aiming at sustainable development of regional economies, improvement of ecological environment and stabilization of social health, making allocation results of transferring water as one of the constraint conditions, coordinating relation of water resources collocation system of various wellhead and multi-user synthetically. We get plan of water resources rational allocation in Dalian city by solving model we established.(4) According to the ideology of implementing the most strict water resource management system to establish a basic evaluation system by confirming the few key indexes that affect the status of water resource’s sustainable using from the total water volume of water use, efficiency, water quality, social economy and other factors then selective analyze and conform the index standard of water resource sustainable using status. To consider the dynamics, evaluation criteria and indexes’ regional of water resource carrying capacity convenience, the variable fuzzy set theory and ideology can be used to research the water resource sustainable using variable fuzzy evaluation method that based on the interval value and evaluate the water resource sustainable using status of Dalian city on condition that multiple various factors and centralize factors are changing. (5) Nowadays, the mode of water resource exploitation and utilization is being changed from project construction into resource scientific management gradually. In the light of water resource exploitation and utilization problems in the new development situation of Dalian city, this paper proposes its water resources management "Three Red Lines" control indexes and their overall management strategy according to "the Opinion About the Most Stringent Water Resources Management System" from the Ministry of Water Resources of the People’s Republic of China. And it will be implemented from the aspect of total water use, efficiency and water quality. Aiming at water resources allocation achievements of Dalian, water supply goals of the projects about seawater utilization, reclaimed water reusing and inter-basin water transfer is established in the situation of using non-conventional water resource and transferred water on a large scale. And the relevant project distributions and concrete management countermeasures are researched emphatically. These research results are expected to guarantee the rational exploitation and utilization of structural-measures, to promote water resource sustainable utilization and to assure economy and society sustainable development of Dalian city.Finally, the conclusions are draw and further problems in this study are discussed.