广西乡镇企业水污染EKC模型实证研究

Research on EKC model of water pollution for township enterprises in Guangxi

废水排放量和化学需氧量的环境库兹涅茨曲线分析有助于广西乡镇企业水污染管理。通过处理2001-2011年相关统计年鉴数据,获得广西乡镇企业经济数据以及两种水环境污染指标数据,基于环境库兹涅茨曲线原理,采用回归分析方法,分析了广西乡镇企业水污染与经济发展之间的关系。结果表明:广西乡镇企业废水排放量、化学需氧量与乡镇经济之间存在显著相关性,关系曲线呈现"N"型和"U"型,"N"型曲线的两个拐点出现在2005年和2007年,"U型"最低点对应的时间是2007年,目前正处于污染排放量上升阶段。

The analysis of environmental Kuznets curve on wastewater emissions and chemical oxygen de -mand contributes to the management of water pollution for township enterprises in Guangxi .By means of processing related data of statistical yearbook from 2001 to 2011 , the paper obtained economic data of Guangxi township enterprises and two kinds of water environmental pollution index data .Based on the principle of EKC , the regression analysis method ,it analyzed the relationship between water pollution and economic development in township enterprises of Guangxi .The results show that wastewater emission and chemical oxygen demand do have significant correlation with township economy .The relationship curve presents N type and U type .Furthermore , the N type curve appears two inflection points in 2005 and 2007 , while the the lowest point of U type curve appears in 2007 .The amount of pollution discharge is in the rising stage .