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针对水资源本身的模糊性和不确定性,基于模糊数学综合评价模型,从水量、水质、人口、社会经济和生态环境5个方面选取18个评价指标,结合AHP法与熵权法确定指标权重,对张掖市2010-2014年的水资源价格进行动态评价,水价计算模糊数学模型由水资源价值评价和水资源价格计算两部分组成.结果表明:采用水资源价值模糊综合指数对水资源价值进行测算,5 a间张掖市水资源模糊综合指数介于水资源价值指数的“中等”与“偏低”之间,说明张掖市水资源价值属于中等偏低;在2010-2014年5 a间水资源价格呈明显上升趋势,核算期初的2010年为2.12元·m~(-3),证实了张掖市目前水资源价格偏低,水资源资产价格存在较大的上升空间,而核算期末的2014年最高达4.96元·m~(-3).基于熵权与AHP相结合确定权重的水资源价格模糊数学综合评价模型,评价结果更客观合理,为下一步水资产负债表编制中水资产与负债价值核算提供数据支持.
According to the fuzziness and uncertainty of water resources, 18 evaluation indexes are selected from the aspects of water quantity, water quality, population, social economy and ecological environment based on the fuzzy mathematics comprehensive evaluation model, and AHP method and entropy weight method , This paper evaluates the price of water resources in Zhangye City from 2010 to 2014. The fuzzy mathematics model of water price calculation consists of two parts: water resource value evaluation and water resource price calculation.The results show that using water resources value fuzzy comprehensive index to carry out water resource value It is estimated that the fuzzy comprehensive index of water resources in Zhangye City is between the “medium” and “low” of water resource value index in 5 years, indicating that the water resource value of Zhangye City belongs to the middle-low value; in 2010-2014 The price of water resource showed a clear upward trend in 5 years, accounting for 2.12 yuan · m -3 in 2010 at the beginning of the accounting period, confirming that the price of water resources in Zhangye City is currently low, and there is a big room for increase in water resource asset prices. The accounting period ends in 2014 up to 4.96 yuan · m ~ (-3) .Based on fuzzy comprehensive evaluation model of water resources price based on the combination of entropy and AHP to determine the weight, the evaluation results are more objective and reasonable for the next water balance sheet Water system in the accounting value of assets and liabilities to provide data support.