摘要
利用LMDI方法,对浙江省2010~2017年的工业废水污染物排放的影响因素进行了分解。研究的污染物为COD和氨氮,研究时将其影响因素分解为规模效应、结构效应和技术效应。研究期内,浙江省工业结构由劳动、资源密集型产业逐渐向技术密集型产业转变,工业生产排放COD和氨氮量的年均降幅分别为14.2%和16.9%。研究结果表明:①产业规模的扩大驱动了工业排放污染物量的增加;②规模效应增加了COD排放量4.72万t,增加了氨氮排放量0.33万t;③结构效应减少了COD排放量2.19万t,减少了氨氮排放量0.15万t;④浙江省高污染行业占比的下降促进了污染物减排,低污染行业比重的上升对污染物排放量的影响不大;⑤技术效应是驱动工业排放污染物减少的重要因素,特别是对于高污染排放行业的技术进步更是一个重要的因素。
The Logarithmic Mean Divisia Index(LMDI)was used to decompose the driving factors of industrial waste water pollutants discharge in Zhejiang Province from 2010 to 2017.The pollutants included Chemical Oxygen Demand(COD)and ammonia nitrogen(NH 3-N).The driving factors were decomposed into scale effect,structure effect and technology effect.During the research period,the industrial structure of Zhejiang Province changed from labor-intensive and resource-intensive industry to technology-intensive industry.The industrial COD and NH 3-N discharge decreased by an average of 14.2%and 16.9%per year,respectively.The results showed that industrial growth increased the pollutants discharge.The scale effect raised COD discharge by 47200 tons and NH 3-N discharge by 3300 tons.Structure effects reduced COD discharge by 21900 tons and NH 3-N discharge by 1500 tons.The decrease of high-pollution industries proportion in Zhejiang Province led to obvious pollutant-reducing effects,while the increase of low-pollution industries proportion had little impact.Technology effect was crucial for industrial pollutants reduction,especially in high-pollution industries.
作者
李玮
吴敬凯
闫俊义
戴凌全
LI Wei;WU Jingkai;YAN Junyi;DAI Lingquan(China Three Gorges Corporation,Beijing 100038,China)
出处
《人民长江》
北大核心
2020年第9期34-38,157,共6页
Yangtze River
基金
国家自然科学基金青年基金项目(51809150)。
