广西发展燃料乙醇产业总体方案替代方案优选

Optimal Selecting Alternative Proposal of the General Scheme of Guangxi Developing Fuel Ethanol Industry

规划环评的目的不是减小规划对环境的影响,而是通过比较,选出规划对环境影响最小的替代方案。本文运用AHP-模糊数学法,结合广西发展燃料乙醇产业总体方案,从大气环境、水环境、废弃物、资源承载力、资源能源消耗和生态环境保护等六个方面,合理选取指标,建立了方案布局合理性指标体系,并用AHP-模糊数学法对四种替代方案进行了计算,得出方案一的结果为77.44,方案二的结果为78.62,方案三的结果为78.23,方案四的结果为82.13。方案四为"零作为"方案,计算结果为环境本底参照值。论文以方案四为参照,同时结合各方案的隶属度,选出了最佳替代方案。

The purpose of Planning Environmental Impact Assessment does not reduce the influence what is plan brings to environment, but by comparing, select out the alternative proposal which can bring the least influence to environment. This paper applys AHP and fuzzy mathematical method, calculates the alternative proposals of layout schemes,reasonably selects indexes from six aspects of air environment, water environment, waste material, resources carrying capacity, resources and energy consumption and ecological environment protection, establishes index system about the rationality of layout scheme. Applying AHP and fuzzy mathematical method, the paper calculates the four alternative proposals of layout schemes, obtains the results. The result of first scheme is 77.44, second scheme is 78.62, third scheme is 78.23, the fourth is 82. 13. The fourth scheme is the scheme of ＂zero footstep＂. Its result is used as environmental background reference value. Referring to the result of fourth scheme, combining with the membership degree of each scheme, the paper selects out the optimum scheme.