| 摘要: |
| 以1986—2020年苏州河水质监测数据为依据，将水质变化过程划分成1986—1996年、1997—2006年和2007—2020年3个阶段，系统分析了苏州河水质状况及多年时空变化特征。结果表明，在第1阶段（1986—1996年），苏州河整体处于重度污染水平，从上游到下游水质显著恶化，市区段污染严重；在第2阶段（1997—2006年），苏州河市区段水质显著改善，有机污染指标消除劣Ⅴ类，氨氮和总磷仍处于较高污染水平，上下游水质逐渐趋同；在第3阶段（2007—2020年），苏州河水质持续改善，特别是2016年以来改善明显，2020年水质达到34年来的最好水平。苏州河水质改善与上海市实施的全市及苏州河多轮环境综合治理工程、上游来水水质改善等密切相关，反映了苏州河30多年环境综合治理的突出成效，并为城市黑臭水体治理提供经验。 |
| 关键词: 苏州河 水质 时空变化特征 上海 |
| DOI：10.3969/j.issn.1674-6732.2023.04.012 |
| 分类号:X524 |
| 基金项目:上海市环境监测中心“上海市社会经济发展和生态环境状况的关联性分析”基金资助项目（2020-5） |
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| Temporal and Spatial Variation Characteristics of Water Quality of Suzhou River in Shanghai from 1986 to 2020 |
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HU Xiongxing
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Shanghai Environmental Monitoring Center， Shanghai 200030， China
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| Abstract: |
| Based on the monitoring data of Suzhou River water quality from 1986 to 2020， the water quality change process is divided into three stages: 1986 to 1996， 1997 to 2006 and 2007 to 2020， and the water quality status and the characteristics of temporal and spatial changes over the years are systematically analyzed. The results show that in the first stage， the overall water quality of Suzhou River was at a severe pollution level， and the water quality deteriorated significantly from upstream to downstream， with the urban section seriously polluted. In the second stage， the water quality in urban section of Suzhou River was significantly improved， and the organic pollution indexes of inferior class V were eliminated， but the ammonia nitrogen and total phosphorus were still at a high pollution level， and the water quality in the upstream and downstream gradually converged. In the third stage， the water quality of Suzhou River was continuously improved， especially since 2016. In 2020， the water quality reached the best level in the last 34 years. The water quality improvement of Suzhou River was closely related to the multiple rounds of comprehensive environmental treatment project of the whole city and Suzhou River implemented in Shanghai， and the water quality improvement of the upstream water， which reflects the outstanding results of comprehensive environmental treatment of Suzhou River for more than 30 years， and provides experience for the treatment on black， malodorous water bodies in cities. |
| Key words: Suzhou River Water quality Temporal and spatial variation characteristics Shanghai |
