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Structural analysis of the interrelationship between economic activities and water pollution in Vietnam in the period of 2000-2011

机译：2000年至2011年越南经济活动与水污染之间相互关系的结构分析

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Abstract Rapid economic growth and poor waste management have left Vietnam with severe water pollution problems. It is thus important to develop a model to evaluate the relationship between economic activities and water pollution to identify water pollution mitigation strategies within the context of economic development. Recent works have demonstrated the effectiveness of the input–output model in analyzing the interplay between the economy and the environment. To comprehensively understand this relationship, the behavior and trend of water pollution during a specified period should be investigated on. The interaction of different economic sectors and its impacts on water pollution should also be analyzed. For the Vietnamese economy, such aspects have not been fully addressed in previous studies. This work thus examines the state of water pollution in Vietnam as indicated by water quality parameters, total suspended solids and biological oxygen demand, with particular attention to the individual contribution of various economic sectors. The period between the years 2000 and 2011 is taken into account in this work. Environmentally extended input–output analysis coupled with vertical integrated coefficient method is used to analyze the interindustry linkages of sectors and to classify sector role as either key sector or pollution puller or pusher. The pollution trend reveals the tremendous increase in total suspended solids from 345,000 tonnes in 2000 to 1,199,000 tonnes in 2011, while the total biological oxygen demand increased from 43,400 tonnes in 2000 to 123,000 tonnes in 2011. Results show that the basic metals industry was the major contributor of total suspended solids, while the food, beverage and tobacco and agriculture, fishery and forestry sectors contributed most to the biological oxygen demand. The results of sectoral linkage evaluation highlight that food, beverage and tobacco and agriculture, fishery and forestry sectors were key sectors for both water quality parameters. These results provide environmental managers and policy maker insights on how to prioritize economic sectors to achieve emission reduction targets.
机译：摘要经济快速增长和废物管理不善使越南面临严重的水污染问题。因此，重要的是要开发一个模型来评估经济活动与水污染之间的关系，以在经济发展的背景下确定减轻水污染的策略。最近的工作证明了投入产出模型在分析经济与环境之间相互作用方面的有效性。为了全面了解这种关系，应研究特定时期内水污染的行为和趋势。还应分析不同经济部门之间的相互作用及其对水污染的影响。对于越南经济而言，以前的研究并未充分解决这些方面的问题。因此，这项工作检查了越南的水污染状况，如水质参数，总悬浮固体和生物需氧量所表明的，尤其要注意各个经济部门的个人贡献。这项工作考虑了2000年至2011年之间的时间段。环境扩展的投入产出分析与垂直综合系数法相结合，可用于分析行业的行业间联系，并将行业的角色归类为关键行业，污染推动者或推动者。污染趋势表明，悬浮固体总量从2000年的34.5万吨猛增到2011年的11.9万吨，而生物需氧量从2000年的43400吨增加到2011年的123000吨。结果表明，基本金属工业是主要的悬浮固体总量的贡献者，而食品，饮料和烟草以及农业，渔业和林业部门对生物需氧量的贡献最大。部门联系评估的结果突出表明，食品，饮料和烟草以及农业，渔业和林业部门是这两个水质参数的关键部门。这些结果为环境经理和政策制定者提供了有关如何优先考虑经济部门以实现减排目标的见解。

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