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| Formula of power function in logarithm form for groundwater irrigation water quality assessment |
| Zhang Duanmei1,2, Liang Xiujuan1, Li Qinwei3 |
| 1.College of Environment and Resources, Jilin University, Changchun, Jilin 130021, China; 2.College of Hydraulic and Environmental Engineering, Changchun Institute of Technology, Changchun, Jilin 130012, China; 3.Jilin Provincial Electric Power Survey and Design Institute, Changchun, Jilin 130022, China |
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Abstract In order to establish a scientific and rational model for irrigation water quality evaluation which can be used simply and effectively, a formula of power function in logarithm form was proposed. Particle swarm optimization(PSO)was used to optimize the parameters in the formula, and the formula for irrigation water quality evaluation applicable to the multi index was obtained. The water quality datum of Alar Reclamation Area, Yuli County in Xinjiang, Pingluo County in Autonomous Region County were taken as examples. The results show that the evaluation results of the formula were basically in accord with those obtained by other evaluation methods including comprehensive hazard coefficient method, fuzzy comprehensive evaluation method and catastrophe theory. The groundwater of Alar Reclamation A-rea in Xinjiang and Pingluo County in Autonomous Region County were suitable for agricultural irrigation, and shallow groundwater of irrigated plains in Yuli County of Xinjiang was not suitable for long-term direct irrigation. The formula of irrigation water quality evaluation has the advantages that it is simple and convenient, and irrigation water quality evaluation results can be quickly obtained. In this way, a new effective approach for agricultural irrigation water quality assessment was suggested.
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Received: 07 December 2012
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