暴雨排水口沉积物中溶解有机物的存在及其对城市暴雨基础设施可持续性的影响

IF 12.4 Q1 ENVIRONMENTAL SCIENCES Resources Environment and Sustainability Pub Date : 2024-04-26 DOI:10.1016/j.resenv.2024.100158
Siping Niu , Yun Jiang , Hui Liu , Ruiqi Wang , Baiyu Cheng , Yisong Cheng
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引用次数: 0

摘要

在气候变化的背景下,有效管理城市雨水基础设施(USI)中的碳变得越来越重要。研究表明,溶解有机物(DOM)在城市雨水基础设施的碳循环中发挥着重要作用。然而,目前还缺乏有关城市暴雨排水口(SDI)沉积物中 DOM 发生情况的全面信息。本研究旨在考察 SDI 沉积物中与土地利用类型相关的 DOM 分布情况,进而为城市基础设施的可持续发展提供建议。研究有三项发现:(1)SDI 沉积物中 DOM 的特征,包括含量、亲水性、分子量和芳香环的功能基团,随土地功能类型的变化而变化;(2)城市 SDI DOM 的腐殖化程度低,主要来源于自生源,腐殖样成分的比例接近或超过 50%;(3)由于旱季微生物的活动,SDI 沉积物 DOM 可能具有不同于道路扬尘和雨水的特征。根据这些发现,提出了城市雨水基础设施可持续发展的措施,包括适当清扫道路、经常疏浚 SDI 沉积物、减少工业活动的排放、促进地方教育实践以及限制不当的有机废物处置。这些结果对雨水相关碳的管理具有重要意义,并为城市生态系统可持续实践的发展提供了宝贵的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Occurrence of dissolved organic matter in storm-drain inlet sediments and its implication for urban stormwater infrastructure sustainability

In the context of climate change, the effective management of carbon in urban stormwater infrastructure (USI) become increasingly crucial. Research indicates that dissolved organic matter (DOM) plays a significant role in the carbon cycle within USI. However, there is a lack of comprehensive information regarding the occurrence of DOM in urban storm-drain inlet (SDI) sediments. This study was undertaken to examine the land use type-related distribution of DOM in SDI sediments, and then provide the suggestion for urban infrastructure sustainability. There are three findings: (1) The characteristics of DOM in SDI sediments, including content, hydrophilicity, molecular weight, and functional groups of aromatic rings, exhibited variation with land functional type; (2) Urban SDI DOM had low humification, and was primarily originated from autochthonous sources, with the proportion of humic-like components close to or exceeding 50%; and (3) SDI sediment DOM was likely to have different characteristics from road dust and stormwater due to microbial activities over dry season. Based on these findings, measures for urban stormwater infrastructure sustainability are proposed, including properly road sweeping, frequently SDI sediment dredging, decreasing in emission from industrial activities, promoting local educational practices, and limiting improper organic waste disposal. These results have implications for the management of stormwater-related carbon and provide valuable insights for the development of sustainable practices for urban ecosystems.

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来源期刊
Resources Environment and Sustainability
Resources Environment and Sustainability Environmental Science-Environmental Science (miscellaneous)
CiteScore
15.10
自引率
0.00%
发文量
41
审稿时长
33 days
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