Analysis About The Value Of The Suzi River

Today's human society and economic development of water resources in the environmental impact of growing, with the social and economic development, the demand for water is increasing, the burden of water environment is gradually increasing. Fushun City, Liaoning Province Dahuofang Reservoir water supply because of its large cities become a veritable source of water for everyone, for the national urban water supply one of nine major source of drinking water. With the social and economic development, there is more and more demand for water, the water reservoir Dahuofang supply and demand of human contradiction between the reflected gradually, in Liaoning Province has become the economic and social development, one of the constraints, It can be said that the rational pricing of local water resources to address local water resources has become the key initiatives. This paper Dahuofang rich reservoir of water upstream, the water quality is relatively good, the population density is not high, the economic development of the Su slower studied river basin, the water environment and water quality assessment of the value of related issues.Su River is a tributary of the River, originated in the eastern Liaoning new Binxian red or rural village five wind floor clearance Ridge, elevation 753.5m, river length 119km, down the river an average of more than 4.8‰, is a typical mountain rivers. Excellent source of a river water quality, mild deterioration of the middle reaches and lower reaches of the situation gradually good, exceeding targets is the chemical oxygen demand, biochemical oxygen demand, petroleum, ammonia nitrogen, total phosphorus and so on, there are models for the pollution, not exceeding a multiple of high, the overall quality of the environment better, but "15"-wide decline in the quality of river water quality, analysis of pollution is mainly caused by pollution from agricultural and sewage pollution. Suzi River Basin water resources of the meaning of value mainly in the scarcity of resources, the value of property and the labor.Many factors impact the value of water resources.Water quality and water quantity are more important, followed by economic factors and demographic and other social factors.Therefore, to deal with such a complex system, it is difficult to use conventional mathematical model of a comprehensive accounting of the value of water resources. The fuzzy comprehensive evaluation model is comprehensive, practical, dynamic characteristics, it will take the value of Suzi River Basin water resources of the various factors that natural factors, social factors and economic factors into a comprehensive value model for water resources, and the value of comprehensive evaluation of water resources and to consider the use of water features, affordability and other economic factors, through the determination of the weight of people ingeniously combining the experience of being in the model, so that theory and practice, practical, very strong. The basic form of the model is as follows: B = ARB for the comprehensive evaluation in which the results of that evaluation sample evaluation of the membership categories; A rating factor for the parameters of the weight by the normalized vector obtained; R rating factor for each parameter between the evaluation criteria and the fuzzy relationship matrix by the definition of type to determine the membership function. "O" for the fuzzy matrix in line with the operator of the symbols, this article uses the weighted average method.Su Canal in 2005 the value of river basin water resources as an example, the value of water-based elements of U = (water quality, water per capita, population density, per capita GDP), the evaluation vector W = (high, high, average, low, low). Elements for water quality, according to Su River water quality in select COD, CODmn, BOD, petroleum, ammonia nitrogen, total phosphorus as a water quality evaluation factor, to minimize the human subjective factors, these factors the use of their own weight to determine the level of analysis, Matrix to determine the structure, the author Su River water quality in accordance with the situation, an analysis of the extent of the pollution factor, constructed in a number of different diagnoses matrix, obtained the largest of these matrix eigenvalue and eigenvector correspond to the unit and test its consistency after , and ultimately select the most appropriate, consistency of the results to determine the optimal matrix is as follows:After calculation, the water quality of the weight factor vector; and the value of the water weight of the elements of vector A, in this article that should reflect the characteristics of the water environment in the region, the need of experts in the field of knowledge and experience, so the use of expert evaluation to identify, evaluate results. And then choose one dollar down half trapezoidal membership function to calculate the value of 2005 evaluation of the water resources element of membership as follows:Based on fuzzy comprehensive evaluation model, the vector value of water resources in 2005 for B₂₀₀₅, B₂₀₀₅ = A(?)R₂₀₀₅=[0 .150.120.060.280.39], 03,04 Similarly to calculate the value of vector in water were[0 . 550.140.030.130.15]and[0 . 640.050.050.110.15].According to the formula (where, P-water price cap; A-biggest water affordability index, in accordance with Economic and Social Commission for Asia-Pacific (ESCAP) of the proposal, residents of the water the water the percentage of total household income should not exceed 3% of the largest Therefore, A check 0.03; E-capita net income, due to the limited information available, the paper used 03-05 years "Statistical Yearbook of Fushun City," in the new farmers per capita net income Binxian, 03,04,05, respectively, for 2951 yuan, 3189 yuan, 3346 yuan; C-volume of water consumed, according to 120L per person per day basis, then the annual per capita water consumption for 43.2t; D-New Binxian water cost 0.9 yuan / t, the normal profit of 8% by , then D is 0.97 yuan / t3), as well as linear arithmetic into law, to calculate Su Valley 03-05 in the price vector of water resources is as follows:Basin water resources in order to achieve price:In order to evaluate the results more intuitive and more comparable, comprehensive evaluation of this paper, the basis vector B, the use of water resources in the value of S fuzzy composite index to evaluate the value of water resources, according to the value of water resources evaluation of vector W, the corresponding structure vector T = [1,2,3,4,5], obtained in 03-05 Su River Basin Water Resources fuzzy composite index as follows:Based on the above calculation results, 03 to 05 Su River after high water to lower the value of the first, and in 2005 the value of the water level was lower than in 2003, the trend of price and value of water resources, like in 2003 than in 2005 level. Analysis of its causes, from the perspective of social factors ,03-Su Valley in 2005 little change in the population, should not cause major changes in the value of water resources; from the perspective of economic factors, the secondary industry in 2005 with the GDP compared to 2004 decreased by 58.9 %, more than in 2003 also dropped by nearly 50%, it can be said of the national economy caused by changes in the value of changes in water resources one of the reasons that can not be ignored; from Su river in terms of water resources in 2005 respectively, compared with an average flow of 03 and 7.5 times higher than in 2004 and 10.1 times the value of vector calculation of changes in the population is not the case, it is bound to result in water resources per capita in 2005 of a substantial increase in the volume, it can be said that the volume of water is greatly enriched in 2005 resulted in lower values of major water resources; the environmental quality of water from the rivers point of view, Su River in 2005 the water quality of the sections are worse than in 2003 and 2004, so that water resources will inevitably result in the value of the fuzzy composite index drop of water decline in the quality of the environment is also Su River in 2005 the value of the main reasons for water resources. Therefore, Su River in 2005 a sharp decline in the value of water resources, mainly due to Su River Basin water quality deterioration, water quantity larger decline in GDP formation of three joint synergy, which also confirmed the value of water resources by natural, economic and social factors that influence the existence of at different times of the time value of water flow.Of course, the ultimate goal is not the value of calculation and analysis of water resources.They are just provide for the protection of water environment and water resources the basis for the rational allocation, and safeguard sustainable use of water resources related to the work of this series is the ultimate goal.