文章基本信息

标题：Relationship Between Contaminant Flux and Economic Growth at the Pearl River Estuary in Guangdong Province, China
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作者：Yilun Li
期刊名称：Nature, Environment and Pollution Technology
印刷版ISSN：0972-6268
出版年度：2016
卷号：15
期号：1
语种：English
出版社：Technoscience Publications
摘要：The acceleration of industrialization and urbanization, rapid expansion of population, hysteretic infrastructureconstruction in cities and towns, and poor domestic sewage treatment in recent years have resulted inincreased contaminant flux at the Pearl River estuary and caused considerable pressure on economic growth.The measurement model of the relationship between the emission load of the environmental index and GDPis established by using relevant data about economic growth and environmental quality of cities and countiesalong the Pearl River in Guangdong Province between 2001 and 2014. The results demonstrate that Kuznetsrelationship exists between the contaminant emission at the estuary and GDP. Among the contaminantsentering the sea, the contents of COD (Chemical Oxygen Demand), nutrient salts (which mainly includeammonia nitrogen, nitrate nitrogen, nitrite nitrogen and phosphorus), heavy metals, petroleum, and arsenicincrease with the increasing GDP. Regression analysis shows a close relationship between the contaminantand GDP per capita; U-shaped and reverse U-shaped relationships exist between emission of COD andheavy metals, and between emission of nutrient salts and petroleum and GDP per capita, respectively.Moreover, the relationship between emission of arsenic and GDP per capita presents a relatively weak Ncurve. Thus, the environmental problem in the Pearl River Basin is serious and needs immediate solution.