Insights into variations and determinants of water pollutant discharge in Jilin, China: Investigations from multiple perspectives
Insights into variations and determinants of water pollutant discharge in Jilin, China: Investigations from multiple perspectives
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吉林省水污染物排放变化及影响因素洞察：多视角调查
DOI：
10.1016/j.jclepro.2019.118386
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发表时间：
2019
影响因子：
11.1
通讯作者：
Dong Liang
中科院分区：
文献类型：
--
作者：
Yang Wei;Song Junnian;Wang Hui;Dong Liang
由于对水污染物排放特征认识不足和监管不力，吉林省等欠发达地区仍面临着严峻的水污染挑战。本研究以吉林省为例，通过投入产出分析，计算了2002-2012年吉林省水污染物足迹，以明确吉林省水污染物足迹在满足当地最终需求时的分布情况。然后，从直接和具体的角度研究了当地的总体WPD。最后，进行结构分解分析（SDA），以分析多种驱动因素的贡献，在区域WPF和本地体现WPD的变化。结果表明，区域WPF占主导地位的内部WPF（71%以上）下降了14%以上。本地体现的WPD主要由出口驱动（超过65%），增加后下降到原来的水平。当地体现的WPD量是区域WPF的两倍多，这是由于大量WPD密集型产品的出口。SDA揭示，直接WPD强度是抵消区域WPF和体现WPD的主要贡献者，其次是最终需求结构，这是走向一个新的模式，减少WPD诱导。这些效应成功地扭转了区域WPF的扩张，体现了最终需求量效应和生产结构效应所导致的WPD。本研究是从多个角度研究区域性WPD的初步尝试。研究结果为区域水污染控制的技术、结构、消费和贸易等相关政策的制定提供了参考。
Some less developed regions in China like Jilin Province are still facing severe water pollution challenge, due to insufficient recognition of water pollutant discharge (WPD) features and ineffective regulations. In this study aided by input-output analysis, first, water pollutant footprint (WPF) of Jilin was accounted to clarify WPD distribution when meeting local final demand during 2002–2012. Then, total local WPD was investigated from both direct and embodied perspectives. Finally, structural decomposition analysis (SDA) was conducted to analyze the contributions of multiple drivers to changes in regional WPF and local embodied WPD. The results indicate that the regional WPF dominated by internal WPF (over 71%) decreased over 14%. The local embodied WPD mainly driven by exports (over 65%) increased then decreased to the original level. The volume of local embodied WPD was more than twice that of regional WPF induced by the export of tremendous products with intensive WPD. SDA reveals that direct WPD intensity was the principal contributor to offset both regional WPF and embodied WPD, followed by final demand structure that is moving towards a new pattern with less WPD induced. These effects succeeded in reversing the expansion of regional WPF and embodied WPD induced by the final demand volume effect and production structure effect. This study is an initial attempt on investigating region-specific WPD from multiple perspectives. The results offer insights for developing pertinent policies regarding technologies, structure, consumption and trade for regional water pollution control.