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文章摘要

安峰山水库底泥分布特征研究和清淤工程建议

Research on the Distribution Characteristics of Sediment in Anfengshan Reservoir and Suggestions for Dredging Engineering

DOI：

中文关键词: 有机质营养盐分布特征生态清淤底泥安峰山水库

英文关键词: Organic matter Nutrient Distribution characteristics Ecological dredging Sediments Anfengshan reservoir

基金项目:国家重点研发计划基金资助项目（2023YFC3200020）；江苏省生态环境科研基金资助项目（JSZC-320000-JSSJ-G2023-0024, SJC2023F-11153）

作者	单位
施媛媛	江苏省环境科学研究院；国家环境保护长江中下游水生态健康重点实验室
尤本胜	江苏省环境科学研究院；国家环境保护长江中下游水生态健康重点实验室
张雷	江苏省环境科学研究院；国家环境保护长江中下游水生态健康重点实验室
闫怀宇	江苏省环境科学研究院；国家环境保护长江中下游水生态健康重点实验室
顾炉华	江苏省环境科学研究院；国家环境保护长江中下游水生态健康重点实验室
黄玉莹	江苏省环境科学研究院；国家环境保护长江中下游水生态健康重点实验室
陈颢	江苏省环境科学研究院；国家环境保护长江中下游水生态健康重点实验室

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中文摘要:

以安峰山水库为浅水型水库代表开展水库底泥内源污染监测，探测底泥淤积分布，测定柱状底泥有机质、营养盐含量，通过实验室内静态释放实验测定内源释放，综合多维污染情况提出生态清淤面积及深度建议。结果表明：安峰山水库底泥淤积显著，底泥层厚度主要呈现出水库中心向水库四周逐渐递减的趋势；柱状底泥总氮、总磷、总有机碳含量垂向分布呈现出自表层至底层逐渐降低的特征，深层底泥总氮、总磷、总有机碳累积依旧较重；底泥冬季氨氮释放通量为-073 mg/（m2·d）～4810 mg/（m2·d），磷酸根释放通量为-149 mg/（m2·d）～250 mg/（m2·d）。建议优先实施清淤区域面积1221 km2，19个目标样点底泥的清淤深度为10 cm~70 cm。

英文摘要:

Anfengshan reservoir was selected as a representative shallow reservoir， for which sediment internal pollution monitoring was carried out to detect the deposition distribution， measure organic matter and nutrient contents in sediment cores， conduct static release experiments to determine internal fluxes， and propose ecological dredging areas and depths based on a comprehensive analysis of pollution characteristics. The results showed that the sediment deposition in Anfengshan reservoir was significant， and nitrogen and phosphorus also accumulated deep in the sediment.The thickness of the sediment layer mainly showed a gradually decreasing trend from the center of the reservoir towards the surrounding areas. The vertical distribution of total nitrogen， total phosphorus， and total organic carbon content in columnar sediment showed a gradual decrease from the surface to the bottom layer，〖JP〗〖GK!87mm〗while the accumulation of total nitrogen， total phosphorus， and total organic carbon 〖JP2〗in deep sediment remained heavy.The nitrogen and phosphorus release from the sediment of Anfengshan reservoir was significant， with ammonia nitrogen release flux ranging from -073 mg/(m2·d) 〖JP〗to 4810 mg/(m2·d)〖JP〗 and 〖JP3〗phosphate release flux ranging from -149 mg/(m2·d) to 250 mg/(m2·d)〖JP〗 in winter. It was recommended to 〖HK〗implement the 〖HK〗dredging area of 〖HK〗1221 km2 in the early stage， and the dredging depth of the sediment at 19 sampling points recommended for dredging ranged from 10 cm to 70 cm.

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