| Study of optimal allocation of water resource in Minqin County of Shiyang River Basin |
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| DOI：10.7606/j.issn.1000-7601.2013.03.35 |
| Key Words: water resource optimal allocation variation coefficient linear analysis Minqin County |
| Author Name | Affiliation | | LI Xiaoyang | School of Technology, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | CHENG Ziyong | School of Technology, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | ZHANG Rui | School of Technology, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | ZHANG Yunliang | School of Technology, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | ZHOU Jiying | School of Technology, Gansu Agricultural University, Lanzhou, Gansu 730070, China |
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| Abstract: |
| There are four sectors in Minqin County that respectively control and manage the use and allocation of water resources in agriculture, industry, urban and rural resident’s daily life, and eeology. Using Defei Er combined with variation coefficient to calculate comprehensive benefit coefficient of these four sectors. The calculated values for these four sectors were 0.238, 0.280, 0.209, and 0.280, respectively. Applied them into linear programming equations for optimal allocation scheme, the results showed that optimal allocation scheme for different departments at three typical levels were(108m3):dry year:agriculture:2.222, industry:0.1616, residents daily life:0.082, ecology:1.5677; average year:agriculture:2.223, industry:0.1616, residents daily life:0.082, ecology:1.8390; wet year:agriculture:2.223, industry:0.1616, residents
daily life:0.082, ecology:1.8394. The Entropy Change Principle was utilized to evaluate the feasibility of these allocation schemes. The results showed that ecological water accounted for
38.87%~42.72% of total water, far more than 18.92% of current alloeation seheme. The ealeulated entropy values of 2010
and 2020 years were 3.62 and 3.49, showing a deerease trend, which indicated the seheme was proved feasible. |
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