The Efficient Water Resources Strategy

Abstract

Relevant bodies of the United Nations in Vienna on March 22, World Water Day, said that if people did not change their way to consume, in this case, 2.5 billion people would face water shortage by 2025 which is of no doubt, and about 5 billion people would live in an area that water has difficulty in self-sufficiency. In this paper, China is selected to be an example. As for models, there are 2 models given in this paper, large-scale system and linear programming. Based on large-scale system model, water resources are divided in the largest 10 drainage basins of China as 10 units which comprise the first level. Then, the use of water is adopted for 4 kinds defined as 4 units which make up the second level. We use polynomial fitting algorithm to estimate 4 kinds of average water consumption in 2015, 2020 and 2025.Then we use linear programming skill to calculate the best 4 kinds of water consumption distribution of 10 drainage basins in 2015, 2020 and 2025 respectively. Comparison and analysis between the best distribution and the estimated average value made in the first step, enables the construction of a preliminary water strategy from 2013 to 2025, which illustrates storage, movement, de-salinization and conservation of water specifically in this paper. According to Analytic Hierarchy Process (AHP), a brief evaluation of models is presented from three angles. At last, in a word, the result is given roughly that the government should increase the distribution of industry water resources appropriately and decreases or keep the same level with the rest of water resources allocation.