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REDUCTION OF NON-POINT SOURCE POLLUTION IN THE YONG’AN RIVER BY CONSTRUCTED WETLAND BASED ON 9 YEARS OF MONITORING

《农业科学与工程前沿（英文）》 2023年第10卷第4期页码 627-638 doi: 10.15302/J-FASE-2023516

摘要：

The agricultural and livestock activities surrounding the rivers flowing into the lakes have caused non-point source pollution, leading to excessive amounts of nutrient salts in downstream rivers. Introducing river water into constructed wetlands along river course has proven to be an effective solution for decreasing nitrogen (N) and phosphorus (P) loads. This paper reports 9 years of monitoring the Yong’an River and its surrounding constructed wetlands in the upper reaches of Erhai Lake, located in Yunnan Province, China. This study analyzed the main types of pollutants in the river, and evaluated the removal efficiency of pollutants by the constructed wetlands. The findings indicate that total nitrogen (TN) and nitrate nitrogen (NO₃^–-N) are the primary pollutants in the Yong’an River, which exhibit variation throughout the year corresponding to the alternating wet and dry seasons. Although constructed wetlands are effective in removing NO₃^–-N and P, their efficacy in removing ammonium nitrogen (NH₄⁺-N) and organic pollutants is limited. This limitation can be attributed to the lack of timely disposal of aquatic plant residues. This research contributes to the understanding of the potential issues that may arise during the extended use of constructed wetlands and provides solutions to address them.

关键词： inflowing rivers surface-flow constructed wetland nutrients long-term monitoring

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Ecosystem health assessment of urban rivers and lakes

ZHANG Fengling, LIU Jingling, YANG Zhifeng, LI Yongli

《环境科学与工程前沿（英文）》 2008年第2卷第2期页码 209-217 doi: 10.1007/s11783-008-0007-y

摘要： The assessment of the ecosystem health of urban rivers and lakes is the scientific basis for their management and ecological restoration. This study developed a three-level indicator system for its assessment. The results indicated that: Zhonghai and Nanhai are in the state of transition from unhealthy to critical state and all the other lakes are in unhealthy states. Water environmental quality, structure and function of the aquatic ecosystem, and the structure of waterfront areas were the constraints. Nanhai was ranked as poor and the others were all ranked as very poor. However, the ecological environment of Zhonghai and Nanhai were better than the others, the sums of the degree of membership to the healthy state and critical state were all close to 0.6. and the restorations of these lakes were moderate. The sums of the degree of membership to the healthy state and critical state of the other lakes were under 0.3, as it was difficult to restore these lakes. Some suggestions on scientific management and ecological restoration of the six lakes were proposed: $`To control non-point pollution and to improve the water quality of six lakes and the water entering into these lakes; $aTo improve the hydrological conditions of six lakes; $bTo rehabilitate the aquatic ecosystem and waterfront areas.

关键词： unhealthy management ecological restoration Zhonghai non-point pollution

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Evaluation of aquatic rehabilitation technologies for polluted urban rivers and the case study of the

Haifeng JIA, Nan DONG, Hongtao MA,

《环境科学与工程前沿（英文）》 2010年第4卷第2期页码 213-220 doi: 10.1007/s11783-010-0023-6

摘要： An index system for evaluation of technologies for urban river rehabilitation was proposed and discussed. The index system includes indicators of cost, resources, environmental improvement, and social effects. The calculation method for an objective value of each index based on its attributes and weights was presented. The Foshan Channel, which is a seriously polluted, black and malodorous urban river in Foshan City, China, was selected as a case study. The values of the attributes and the weights of the indices for the Foshan Channel were determined. The technologies for the rehabilitation of the Foshan Channel were evaluated based on this index system. Finally, a rehabilitation scheme for the Foshan Channel was proposed.

关键词： river rehabilitation urban rivers river pollution multi-objective analysis the Foshan Channel

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Identification of pollution sources in rivers using a hydrodynamic diffusion wave model and improved

《环境科学与工程前沿（英文）》 2023年第17卷第7期 doi: 10.1007/s11783-023-1685-1

摘要：

● A hydrodynamic-Bayesian inference model was developed for water pollution tracking.

关键词： Identification of pollution sources Water quality restoration Bayesian inference Hydrodynamic model Inverse problem

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Occurrence and fate of antibiotics in advanced wastewater treatment facilities and receiving rivers in

Xinwei LI,Hanchang SHI,Kuixiao LI,Liang ZHANG,Yiping GAN

《环境科学与工程前沿（英文）》 2014年第8卷第6期页码 888-894 doi: 10.1007/s11783-014-0735-0

摘要： The occurrence and removal of 13 antibiotics were investigated in five wastewater treatment plants (WWTPs) with advanced wastewater treatment processes in Beijing, China. Most of the target antibiotics were detected in the secondary and tertiary effluents, with the concentrations of 4.8–1106.0 and 0.3–505.0 ng·L . Fluoroquinolone antibiotics showed relatively high concentrations in all samples (782–1814 ng·L ). Different tertiary treatment processes showed discrepant antibiotics removal performances. Ozonation process was found more effective in removing target antibiotics compared to the coagulation-flocculation-sedimentation process and sand filtration process. Investigation of the target antibiotics in three typical urban rivers in Beijing was carried out to understand antibiotics occurrence in surface water environment. Eight antibiotics were detected in the studied rivers, with highest concentration of antibiotics in the river which was mainly replenished by reclaimed water. This study showed the necessity of employing more effective advanced treatment facilities to further reduce the discharge amount of antibiotics.

关键词： antibiotics advanced treatment urban river reclaimed water

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risks of potential pathogens carrying antibiotic resistance genes and virulence factors in receiving rivers

《环境科学与工程前沿（英文）》 2023年第17卷第7期 doi: 10.1007/s11783-023-1682-4

摘要：

● Abundance of MAGs carrying ARG-VF pairs unchanged in rivers after WWTP upgrade.

关键词： Wastewater treatment plant upgrade Antibiotic resistance genes (ARGs) Virulence factors (VFs) Gene co-occurrence Genome-centric analysis

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面向城市河流生态流量保障的堰高确定方法 Article

孙媛媛, 尹心安, 毛显强, 张恩泽, 赵彦伟

《工程（英文）》 2021年第7卷第2期页码 187-194 doi: 10.1016/j.eng.2020.05.022

摘要：

城市河流生态流量不足的现象普遍存在。除各用水部门之间竞争加剧以及生态流量保障措施执行不彻底等已知原因外，堰高设计中未明确考虑生态流量，是导致生态流量无法满足的另一个重要原因。本研究建议将生态流量的保障措施从供水阶段扩展到河道的设计阶段。为了更有效地满足城市河流的生态流量，本文构建了一个新的堰高确定框架。有别于传统框架中堰高设计重点关注防洪和蓄水要求，并以洪水入流作为设计依据，新的框架中增加了对生态流量以及河流流速维持的考虑，将城市河流中能为生态流量保障提供的实际流量作为入流。本研究以典型的城市渠化河流——合肥市十五里河为案例，对新框架的有效性进行实证研究。研究结果表明，旧框架会导致设计的堰高过高，无法有效满足生态流量保障的要求，而新框架可确定更为合理的堰高，从而改善了生态流量的保障效果。

关键词：生态流量城市河流河流生态修复

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城市渠化河流生态流量核算方法 Article

尹心安, 杨志峰, 张恩泽, 徐志豪, 蔡宴朋, 杨薇

《工程（英文）》 2018年第4卷第5期页码 590-596 doi: 10.1016/j.eng.2018.08.006

摘要：

城市河流生态流量核算对于水资源规划和河流保护非常重要。以往城市河流生态流量核算方法侧重于满足物种生境维持和污染物稀释的需求。然而，城市河流中很少存在需保护的物种，同时大量城市河流为混凝土化渠道，无需考虑物种生境维持需求；另外，随着城市水污染防治工程的建设，一些城市河流的污染问题可得到有效的控制。对于这类城市渠化河流，如果沿用以往的生态流量核算方法，即从物种生境和污染物稀释的角度来确定生态流量，生态流量的核算结果将很小，潜在地降低了未来水资源分配和管理中对河流生态保护的重视程度。为了更有效地核算渠化城市河流的生态流量，除了满足污染物稀释的需求外，本研究依据河流纵向水文连通程度的不同（高、中、低），提出了3 种情景下的生态流量核算方法。在高水文连通情景下，生态流量旨在维持一定的水流流速，以确保河流的自净能力并减缓藻类的繁殖；在中水文连通情景下，生态流量旨在维持城市河流中被拦水堰分割河段之间的纵向水力连通性，以确保河流中的物质、能量和信息间的交换；在低水文连通情景下，设计的生态流量将进一步减小，改为间歇地向城市河流补水，旨在满足被拦水堰分割河段间的间歇性连通。本研究以十五里河为研究案对象，研究结果表明新建立的生态流量核算方法可以提供更加精确、符合实际的生态流量核算结果，并为生态补水工程的建设和管理提供有效的指导。

关键词：生态流量城市河流渠化河流河流修复

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秦巴山脉区域河流自然风景价值保护初探

吴书悦,刘海龙,周语夏

《中国工程科学》 2020年第22卷第1期页码 80-85 doi: 10.15302/J-SSCAE-2020.01.008

摘要：

秦巴山脉区域是我国众多重要河流的发源地，与河流相关的自然生态与历史文化资源丰富，区域近年来开展了清理自然保护区内的小水电等恢复河流自然状态的行动，河流管理也正在从侧重开发利用向综合管理转型。本文论述了秦巴山脉区域河流具备的自然与风景价值，指出了秦巴山脉区域现有保护地体系在河流保护方面存在的不足，梳理了新形势下秦巴山脉区域河流综合管理的有利条件，并对秦巴山脉区域实施河流自然风景价值保护提出初步建议，包括：①调查秦巴山脉河流资源；②开展河流分类保护与修复；③建立河流保护地、完善管理机制与立法保障；④加强社区共建。

关键词：风景园林秦巴山脉区域河流保护河流管理机制自然与风景河流

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筑坝河流的生态补偿

董哲仁

《中国工程科学》 2006年第8卷第1期页码 5-10

摘要：

从河流的连续性特征出发分析了大坝对于河流生态系统的胁迫问题。指出要在自然-社会-经济复合生态系统中全面权衡筑坝的利弊得失。讨论了对于筑坝河流进行生态补偿的可行性，建议开展河流生态系统功能价值评估，建立生态补偿的合理机制。

关键词：大坝河流生态补偿生态恢复补偿机制

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西北江交汇区航道整治试验研究

敖大光,曾志诚,李波,车进周

《中国工程科学》 2002年第4卷第5期页码 67-70

摘要：

介绍了我国南方最大的河流珠江航道整治的成功经验。整治河段位于珠江西、北两江交汇区，不同类型浅滩多，水流条件复杂，而且是行洪干道之一，整治难度大。根据原型水文资料及河道地形资料，进行了水动力条件、来水来沙条件和河床演变的分析；结合模型试验，揭示了浅滩成因和形成机理；采取有针对性的整治工程布局，并应用在实际治理工程中。

关键词：珠江航道浅滩整治工程

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HOTSPOTS OF NUTRIENT LOSSES TO AIR AND WATER: AN INTEGRATED MODELING APPROACH FOR EUROPEAN RIVER BASINS

《农业科学与工程前沿（英文）》 2023年第10卷第4期页码 579-592 doi: 10.15302/J-FASE-2023526

摘要：

Nutrient pollution of air and water is a persistent problem in Europe. However, the pollution sources are often analyzed separately, preventing the formulation of integrative solutions. This study aimed to quantify the contribution of agriculture to air, river and coastal water pollution by nutrients. A new MARINA-Nutrients model was developed for Europe to calculate inputs of nitrogen (N) and phosphorus (P) to land and rivers, N emissions to air, and nutrient export to seas by river basins. Under current practice, inputs of N and P to land were 34.4 and 1.8 Tg·yr^–1, respectively. However, only 12% of N and 3% of P reached the rivers. Agriculture was responsible for 55% of N and sewage for 67% of P in rivers. Reactive N emissions to air from agriculture were calculated at 4.0 Tg·yr^–1. Almost two-fifths of N emissions to air were from animal housing and storage. Nearly a third of the basin area was considered as pollution hotspots and generated over half of N emissions to air and nutrient pollution in rivers. Over 25% of river export of N ended up in the Atlantic Ocean and of P in the Mediterranean Sea. These results could support environmental policies to reduce both air and water pollution simultaneously, and avoid pollution swapping.

关键词： agriculture air-water modeling European rivers nutrient pollution sewage systems source attribution

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中国西部开发的防灾减灾综合管理——兼论西部生态安全建设山川秀美评价指标体系

金磊

《中国工程科学》 2001年第3卷第3期页码 16-20

摘要：

在西部大开发中实施防灾减灾，利用科技减灾，为西部生态环境建设作贡献。西部生态环境建设中要强调科技减灾，落实科技减灾产业化思想，大力推进并注入减灾中的科技含量。文章指出，应崇尚一种实事求是的科学精神及战略观念，靠科学评估、靠灾害风险分析、靠适度的生态环境政策，以确保西部开发规划、设计、建设各环节，充分考虑防灾减灾关系到西部可持续发展的关键要素实施。

关键词：中国西部开发山川秀美综合减灾管理体系

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建坝河流鱼类繁殖的流速调控 Article

陈求稳, 张建云, 陈宇琛, 莫康乐, 王骏, 唐磊, 林育青, 陈磊, 高勇, 姜伟, 张与馨

《工程（英文）》 2021年第7卷第2期页码 178-186 doi: 10.1016/j.eng.2020.06.013

摘要：

保护濒危和重要经济鱼类以及控制入侵鱼类是全世界水利工程的巨大挑战。人们已经认识到流速会影响鱼类在河流中的产卵。但是，目前缺乏可靠的科学支持和相关机制，以综合考虑产卵、受精、孵化、存活等因素，建立流速与鱼类繁殖之间的定量关系。本研究通过实验室控制实验和野外现场实验，量化了流速与家鱼繁殖率之间的关系。结果表明，促发家鱼产卵需要一个最小的速度，并且需要一定的速度范围以维持其产卵过程。但是，实验发现随着流速的增加，家鱼的胚胎孵化和仔鱼发育会受到抑制。综合考虑产卵和孵化以及仔鱼存活需求，本文确定了河流中家鱼繁殖的优化流速过程。该发现对改进水库运行以构建合理、精确的生态流量来调控鱼类繁殖具有重要意义，并在三峡工程应用中取得了有前景的效果。

关键词：筑坝四大家鱼种群管理生态流域长江