[1]戴佳奕,陈诚,马金戈,等.城市河流生态清淤工程的水生态环境影响定量评估[J].江苏水利,2026,(08):5-9,29.
 DAI Jiayi,CHEN Cheng,MA Jinge,et al.Quantitative assessment of the water ecological environment impact of urban river ecological dredging projects[J].JIANGSU WATER RESOURCES,2026,(08):5-9,29.
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城市河流生态清淤工程的水生态环境影响定量评估()

《江苏水利》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2026年08期
页码:
5-9,29
栏目:
水生态与环境
出版日期:
2026-08-01

文章信息/Info

Title:
Quantitative assessment of the water ecological environment impact of urban river ecological dredging projects
文章编号:
1007-7839(2026)08-0005-0005
作者:
戴佳奕1陈诚1马金戈1顾杰2王思文3杨正江3
(1.南京水利科学研究院 生态环境研究所,江苏 南京 210029;2.南京鼓楼水务集团有限公司,江苏 南京 210029;3.南京市鼓楼区水务设施综合养护中心,江苏 南京 211000)
Author(s):
DAI Jiayi1 CHEN Cheng1 MA Jinge1 GU Jie2 WANG Siwen3 YANG Zhengjiang3
(1.Eco-environmental Research Department, Nanjing Hydraulic Research Institute, Nanjing 210029, China; 2.Nanjing Gulou Water Group Co., Ltd., Nanjing 210029, China; 3.Water Facilities Comprehensive Maintenance Center of Gulou District of Nanjing City, Nanjing 211000, China)
关键词:
生态清淤静态释放实验污染负荷削减生态响应内源释放
Keywords:
ecological dredging static release experiment pollution load reduction ecological response endogenous release
分类号:
X52;X826
文献标志码:
A
摘要:
针对城市河流生态清淤工程缺乏系统性评价体系的问题,以南京市西北护城河为例,构建了涵盖“物理空间-化学界面-生物群落”的多维定量评估体系。研究表明:清除20 cm的表层沉积物能有效去除氨氮、总磷等污染物的高浓度富集层;清淤大幅削减了内源污染总量,氨氮释放通量降幅超97%,但受施工微扰动影响,表层总磷和高锰酸盐指数出现显著短期反弹,凸显了动态通量指标在防范水质波动中的核心作用;工程保留了底层砂石生境,底栖动物多样性指数仅降15.38%,有效维持了水生态系统的韧性。
Abstract:
To address the lack of a systematic evaluation framework for urban river ecological dredging, this study establishes a multidimensional quantitative assessment system encompassing the “physical space-chemical interface-biological community” nexus, using the Northwest Moat of Nanjing as a case study. Results demonstrate that removing the top 20 cm of surface sediment effectively eliminates the highly enriched layer of pollutants, including ammonia nitrogen (NH3-N) and total phosphorus (TP). Although dredging significantly reduces the total internal pollution load—with the NH3-N release flux plunging by over 97%—the surface TP concentrations and permanganate index (CODMn) exhibit a sharp, short-term rebound driven by construction-induced micro-disturbances. This phenomenon highlights the critical role of dynamic flux indicators in early warning and preventing water quality fluctuations. Furthermore, by preserving the underlying gravel habitat, the project restricted the decline in the benthic macroinvertebrate diversity index to only 15.38%, thereby effectively maintaining aquatic ecosystem resilience.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2026-04-09
基金项目:国家重点研发计划项目(2023YFC3208903)
作者简介:戴佳奕(2003—),女,硕士研究生,主要从事水生态保护相关研究。E-mail: 19826150866@163.com
通信作者:陈诚(1990—),男,高级工程师,博士,主要从事水环境信息学研究。E-mail: chencheng@nhri.cn
更新日期/Last Update: 2026-08-01