Development And Application Of Planning Water Resources And Virtual Water Trade Model

This paper constructed an uncertain model of generalized fuzzy two-stage programming(GFTSP)in view of the uncertainty and complexity of the water used for irrigated crops in the irrigation district.The model can solve the problems of uncertainty represented as probability distribution,fuzzy sets and fuzzy random variables.With the help of the robust stepwise interactive algorithm,the GFTSP model can be generated a series of generalized fuzzy linear sub-models.The probability information expressed as fuzzy membership functions was also shown in the results of objective functions and decision variables.Applying the GFTSP model to agricultural water use in Hetao irrigation district of Inner Mongolia,we can draw the optimal water use range of different crops in different areas under different flow conditions.At the same time,with the combination of water resources planning and related economic punishment policy,provided scientific advice for local policy makers to adjust the structure of agricultural products and promote the steady development of local agricultural economy.Based on the value input-output table of Guangdong Province in 2012,this paper uses the input-output model to quantify the use of virtual water in various economic sectors in Guangdong Province,establishes the input-output table of water resources in Guangdong Province in 2012,Virtual water links between economic sectors.Using ENA to establish a simple urban water resources metabolic network system,and applying this system in Guangdong Province,it also proved the practicability of this method.Then we use the analysis method of NCA and NUA to analyze the flow and distribution of virtual water among different departments.The results show that the entire water resources system network has more negative effects and the water resources system network is unhealthy.In particular,non-metallic mineral products,fabricated metal products and construction industries have a negative relationship with other mining industries.Therefore,it is necessary to strengthen the virtual water trade in other industries by the three industries.Moreover,agriculture,forestry,animal husbandry and fishery,a relatively large virtual water consumption group,directly introduce virtual water resources from the machinery and equipment manufacturing industry and other service industries.This is closely related to the machinery manufacturing industry.In order to reduce the virtual water use of agriculture,forestry,animal husbandry and fishery We should try our best to improve the technology of machine manufacturing or import large-scale machinery and equipment from other regions.Through the analysis of the control dependency among the various departments of the virtual water network,it is also helpful to improve the rational utilization of water resources in Guangdong Province in the future.This paper uses two methods to discuss the different problems existing in the two regions,and proposes solutions and recommendations to contribute to the coordinated development of the environment,economy,and society.