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Study on Tieling City's water environmental carrying capacity

机译：铁岭市水环境承载力研究

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摘要

The water environmental carrying capacity (WECC) of a city can demonstrate a balance between the level of exploitation of the local water resources and the population growth and concomitant socioeconomic development. To begin with, the definition of WECC was elaborated. Combined with hydraulic, hydrologic and water quality data, a one-dimensional water quality model was subsequently applied to simulate the water pollutants (chemical oxygen demand (COD)) in Tieling City. Then, a multi-objective model was applied to explore WECC. Economy, demography, and contaminant were selected as goals, taking into account the constraints of macroeconomic aggregates, water supply, water quality, and population. The results showed WECC could nearly carry all planned gross domestic product (GDP), population in the planning years 2015, 2020, and 2025 with the maximum COD of 30,681.7 t, but not for the condition of maximum COD of 15,709.0 t. That is, COD overload would occur if GDP and population develop as planned. Some measures must be taken to improve WECC in Tieling City, which are valuable for supporting the adjustment and planning for social-economic development.
机译：一个城市的水环境承载力（WECC）可以证明当地水资源的开发水平与人口增长以及随之而来的社会经济发展之间的平衡。首先，阐述了WECC的定义。结合水力，水文和水质数据，随后使用一维水质模型来模拟铁岭市的水污染物（化学需氧量（COD））。然后，采用多目标模型探索WECC。考虑到宏观经济总量，供水，水质和人口的制约因素，选择经济，人口统计学和污染物作为目标。结果表明，WECC可以在2015年，2020年和2025年的规划年度内几乎承载所有规划的国内生产总值（GDP），人口，最大COD为30,681.7 t，但在最大COD为15,709.0 t的条件下，则不能。也就是说，如果GDP和人口按计划发展，就会发生COD超载。必须采取一些措施来改善铁岭市的WECC，这对于支持调整和规划社会经济发展具有重要意义。

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