Journal of Environmental Management最新文献

{"title":"Enhancing soil health and microbial resilience with organic fertilization in semi-arid Astragalus ecosystems.","authors":"Abdul Qadir Khan, Chaoli Guo, Rafi Ullah, Farhan Ahmad, Zhihao Li, Hailong Ma, Tao Feng, Feng-Min Li","doi":"10.1016/j.jenvman.2025.127474","DOIUrl":"https://doi.org/10.1016/j.jenvman.2025.127474","url":null,"abstract":"<p><p>Organic fertilization, particularly manure (MF) and compost (CF), is an effective and sustainable method for improving soil health. However, their impacts on soil bacterial communities and nutrient cycling in semi-arid Astragalus systems remain unclear. In this study, we investigated the effects of MF and CF on soil properties and bacterial communities over two years, analyzing 36 soil samples from two depths (0-20 cm and 20-50 cm). Bacterial composition was determined using high-throughput 16S rRNA sequencing, and the relationships between microbial communities and soil properties were explored using network analysis, Pearson correlations, and Mantel tests. Both amendments significantly improved soil properties (p < 0.05), with the mean soil quality index (SQI) increasing from 0.18 in the control to 0.50 with CF and 0.55 with MF. The relative abundances of Proteobacteria and Bacteroidota increased by 32-33 % and 8.6-10.8 %, respectively, compared to the control. Average network modularity and density were higher in MF (0.64, 0.335) and CF (0.58, 0.34) compared to the control (0.53, 0.32), indicating improved ecosystem resilience. Several genera, including Lysobacter, Nitrospira, and Pedobacter, showed positive correlations (p < 0.05) with key soil traits, suggesting their roles in nutrient cycling. Our results demonstrate that manure and compost fertilization not only enhance soil quality and microbial diversity but also strengthen ecosystem resilience. These findings suggest incorporating organic amendments, such as manure and compost, rather than chemical fertilizers, to enhance soil quality, promote sustainable agriculture, and support ecosystem stability in semi-arid farming systems.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"394 ","pages":"127474"},"PeriodicalIF":8.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145211346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of the evolution characteristics and driving mechanisms of salinization in arid regions based on multi-factor interaction with optimized parameter geographic detector (OPGD)¹.","authors":"Jingyu Liu, Shuai Guo, Pengwei Zhang, Hongli Hu, Su Tang","doi":"10.1016/j.jenvman.2025.127487","DOIUrl":"https://doi.org/10.1016/j.jenvman.2025.127487","url":null,"abstract":"<p><p>Understanding the mechanisms of saline-alkali in arid oasis regions is crucial for ecological security. This study integrates multi-source spatiotemporal data with the Optimized Parameter Geographic Detector (OPGD) model. The analysis utilizes 1511 soil samples collected in 2022 alongside multi-year remote sensing interpretation results. By quantifying eleven water-soil-vegetation-human activity driving factors, the research systematically reveals the patterns, evolution, and driving mechanisms of soil salinization in the Kashgar Plain oasis. Key findings include: (1) The area exhibits chloride-sulfate type severe salinization (average soil salinity 19.17 g/kg), with spatial heterogeneity characterized by an overall low salinity level but with localized severe salinization hotspots, and a pattern of lighter in the south and heavier in the north. The northern regions (Jiashi-Bachu) are high-risk hotspots (with 18.62 % of areas severely salinized). Sodium ions dominate (accounting for 34.6 % of cations), highlighting risks associated with sodium accumulation; (2) Post-2010 policies supporting Xinjiang's development drove large-scale reclamation and oasis expansion (+9885 km²), contributing to regional economic development. However, this rapid land-use change in ecologically vulnerable northern areas inadvertently altered the local water-salt balance, leading to a notable expansion of secondary salinization (+5753 km²) against the backdrop of overall oasis improvement. This has created a spatially divergent pattern of \"deterioration in the north, improvement in the south, and stability in the central\"; (3) The OPGD model identifies land use as the primary anthropogenic driver (Q = 0.2479), while groundwater systems (depth and mineralization) serve as natural key factors. Interaction effects between factors were prevalent and significant, primarily exhibiting bivariate enhancement. Notably, the interaction between groundwater mineralization and vegetation cover (X9∩X10) demonstrated nonlinear enhancement (Q = 0.2715), which is stronger than the sum of their individual effects. Thresholds for risk are first defined: mineralization degree >14 g/L and groundwater depth exhibiting a bimodal risk distribution (<6.06 m and >43.1 m). The findings provide a theoretical framework for the precise management of saline-alkali land along the Silk Road Economic Belt.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"394 ","pages":"127487"},"PeriodicalIF":8.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145211268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of drip irrigation on soil quality in agrivoltaic systems: A comparative study in desert regions.","authors":"Yinzhu Liu, Shiqi Wei, Qijie Yu, Jingjing Su, Jieqiong Su, Yahu Hu","doi":"10.1016/j.jenvman.2025.127510","DOIUrl":"https://doi.org/10.1016/j.jenvman.2025.127510","url":null,"abstract":"<p><p>Agrivoltaic systems (AVS) offer a promising strategy for drylands by integrating power generation and agriculture, yet their impact on soil quality remains poorly understood. This study examined a 5-year-old photovoltaic (PV) installation in the Kubuqi Desert, cultivating Scutellaria baicalensis Georgi between panels, to compare drip and non-drip irrigation effects on soil quality. Soil physicochemical and biological indicators were analyzed across PV and control plots (bare ground with equivalent preparation). Results showed significantly lower mean soil moisture content (SMC) in PV zones versus controls (drip: reduced by 49.7 %; non-drip: reduced by 56.1 %), with no significant differences between beneath-panel and between-panel zones. PV operations also uniformly decreased soil calcium carbonate, total phosphorus, and available potassium, irrespective of irrigation or panel zone. Pearson correlations indicated total phosphorus and available potassium levels were associated with SMC, suggesting SMC dynamics influence mineral weathering and leaching. Conversely, drip irrigation elevated enzyme activities linked to carbon, nitrogen, and phosphorus cycling in between-panel zones (compared to beneath-panel), alongside increases in available phosphorus and nitrogen, both correlating with soil organic carbon. Mantel tests linked enzyme activity to nutrient dynamics, indicating irrigation stimulates biogeochemical cycling. Although the soil quality index (SQI) showed no irrigation differences, between-panel SQI exceeded beneath-panel values, highlighting crop-induced heterogeneity as a driver of ecological regulation. Thus, drip-irrigated AVS can reconfigure soil nutrient cycling pathways in drylands, with ecologically enhanced between-panel zones offering a sustainable technical paradigm for desert ecosystems.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"394 ","pages":"127510"},"PeriodicalIF":8.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145211291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Light absorption and molecular composition of brown carbon in Nanjing, China: Large contribution of biomass burning and secondary formation.","authors":"Junjun Deng, Xinfeng Wang, Jialei Zhu, Wei Hu, Libin Wu, Pingqing Fu","doi":"10.1016/j.jenvman.2025.127497","DOIUrl":"https://doi.org/10.1016/j.jenvman.2025.127497","url":null,"abstract":"<p><p>Brown carbon (BrC) impacts global climate through solar radiation absorption, yet its optical effects (especially those of water-insoluble fractions) and molecular links between chromophores and sources remain poorly constrained, hindering climate assessments. To address these gaps, this study systematically investigated BrC's optical properties, molecular compositions (focusing on nitroaromatic compounds, NACs) and sources in Nanjing, East China, across four seasons (November 2014-July 2015), by comparing water-soluble (WS-BrC) and methanol-soluble BrC (MS-BrC, total BrC proxy). MS-BrC exhibited 2.1-fold higher average light absorption (11.9 ± 7.7 Mm^-1) than WS-BrC (5.8 ± 3.8 Mm^-1), with its direct radiative effect relative to black carbon (10.5 ± 3.9 %) being 2.5 times that of WS-BrC (4.8 ± 2.6 %), highlighting the long-overlooked climate significance of water-insoluble BrC. Nine NAC species (9.1 ± 7.9 ng m^-3) contributed 0.33 ± 0.14 % to BrC absorption-2.4-17 times their mass contribution, with distinct seasonal shifts: nitrocatechols (NCs) dominated winter/autumn, whereas nitrosalicylic acids (NSAs) prevailed spring/summer. A NAC-constrained Positive Matrix Factorization (PMF) model identified distinct seasonal BrC sources. For MS-BrC, dominant sources were multiphase chemical processes (27.0 %) and biomass burning (25.0 %); for WS-BrC, biomass burning (28.4 %), and photochemical processes (25.2 %) prevailed. Combined secondary formation contributed ∼47 % to BrC light absorption, higher than in northwest China. During aerosol pollution, BrC light absorption and radiative effects intensified, with biomass burning contributions rising from 21.6 % to 36.6 %. These findings advance understanding of water-insoluble BrC's climate role, refine BrC source apportionment via molecular tracers, and offer a robust basis for climate models and targeted air pollution control.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"394 ","pages":"127497"},"PeriodicalIF":8.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145211307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Small-scale fishery as a driver of habitat loss in marine protected areas.","authors":"Chiara Silvestrini, Alessandro Ciccolella, Paolo D'Ambrosio, Francesco de Franco, Luciana Muscogiuri, Simonetta Fraschetti","doi":"10.1016/j.jenvman.2025.127464","DOIUrl":"https://doi.org/10.1016/j.jenvman.2025.127464","url":null,"abstract":"<p><p>Understanding the impacts of fisheries on the seascape is essential to prevent habitat loss. While industrial fisheries have been widely studied, the ecological effects of artisanal, or small-scale fisheries (SSFs), remain understudied, despite being one of the few extractive activities allowed within Marine Protected Areas (MPAs). This study provides one of the first comprehensive, spatially explicit estimates of habitat degradation caused by SSF in Mediterranean MPAs, integrating habitat mapping, bycatch data and fishing effort. Specifically, we assessed the effects of trammel nets on two blue carbon habitats, the seagrass Posidonia oceanica and coralligenous reefs, by comparing two well-regulated MPAs with adjacent unprotected areas. Benthic bycatch accounted on average for 41 % of the total catch by abundance and 28 % by biomass, with an annual loss of approximately 4000 m² of coralligenous habitat inside MPA and up to 6400 m² in unregulated areas. Such degradation can trigger cascading ecological effects, reducing biodiversity, altering ecosystem functioning and compromising the provision of critical ecosystem services. In contrast, impacts on Posidonia were less severe. Given the socio-cultural importance of SSFs and contributions to local well-being, there is an urgent need for broad-scale quantitative assessments of SSFs combined with fine-scale ecological data to fully capture their impacts on marine seascapes. Our results highlight the need for more sustainable fishing practices within an ecosystem-based management framework to ensure long-term habitat integrity and advance international conservation goals, including the effective expansion of multiple-use MPAs.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"394 ","pages":"127464"},"PeriodicalIF":8.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145211294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Is oil palm a threat or opportunity for Peru's forests?","authors":"Diego Brizuela-Torres, Calum Brown, Yves Zinngrebe","doi":"10.1016/j.jenvman.2025.127462","DOIUrl":"https://doi.org/10.1016/j.jenvman.2025.127462","url":null,"abstract":"<p><p>Oil palm is the world's main source of edible oil, supporting rural incomes but also driving deforestation and other impacts. As new production regions emerge, understanding the links between sustainability and governance- ranging from government regulations to market demands -is essential. We examined Peru's oil palm sector, focusing on the main producing Regions, San Martin and Ucayali. We quantified palm expansion, associated deforestation, and the role of a key land-use policy tool. Then, through 30 stakeholder interviews, we identified factors driving palm expansion and its impacts, highlighting pathways for a deforestation-free sector. We found that Peru's oil palm sector is largely supplied by smallholders, but becoming profit-oriented and industrializing quickly. Except from specific large deforestation events, oil palm has not yet been a dominant deforestation driver in Peru, but risks persist that it could become one. These risks include low yields, weak land-use governance, and land tenure issues that promote expansion over productivity gains. Furthermore, the land-use, tenure and forestry policies that could address these risks suffer from incoherencies and weak implementation and enforcement, particularly in Ucayali. Global sustainability standards are the main sustainability lever at present, but many others require stronger public-private collaboration. We propose a public-private agenda to align stakeholders towards sustainable oil palm. With sustainability becoming a competitive factor globally, Peru has an opportunity to integrate its palm sector into responsible supply chains. However, urgent action is needed to strengthen multi-stakeholder platforms and implement locally tailored deforestation control strategies before the opportunity window closes.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"394 ","pages":"127462"},"PeriodicalIF":8.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145211296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clarifying CSR and ESG: Causes of conflation, consequences, and pathways to conceptual clarity.","authors":"Richard Yeaw Chong Seow","doi":"10.1016/j.jenvman.2025.127468","DOIUrl":"https://doi.org/10.1016/j.jenvman.2025.127468","url":null,"abstract":"<p><p>This study critically examines the persistent conflation and confusion between Corporate Social Responsibility (CSR) and Environmental, Social, and Governance (ESG) concepts, which have increasingly permeated academic discourse and corporate practices. The primary objective is to identify the root causes of this conceptual overlap, assess its consequences, and propose actionable solutions. Adopting a literature review approach, the study draws from diverse academic sources, mainly from Web of Science and Scopus databases, to highlight how CSR and ESG, despite their distinct origins and purposes, are often treated interchangeably. The findings reveal that CSR and ESG, while related to promoting sustainability, differ fundamentally in their origins, motivations, and stakeholder engagement. The conflation undermines theoretical development, introduces methodological inconsistencies, and poses challenges to regulatory compliance and stakeholder engagement. The study's contributions are threefold: it clarifies the theoretical distinctions between CSR and ESG, critically examines the practical challenges arising from their conceptual ambiguity, and offers strategic recommendations for academic, corporate, and regulatory stakeholders. Additionally, it introduces a conceptual framework that systematically differentiates the components of CSR and ESG, providing a structured lens for understanding their fundamental differences and practical applications. By addressing these issues, the study contributes to advancing corporate sustainability practices and strengthening scholarly debate.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"394 ","pages":"127468"},"PeriodicalIF":8.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145211320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bridging the digital divide: Exploring digitalization's role in sustainable tourism for BRI countries.","authors":"Elahe Khosravi, Ali Gholizadeh, Saba Saneinia","doi":"10.1016/j.jenvman.2025.127420","DOIUrl":"https://doi.org/10.1016/j.jenvman.2025.127420","url":null,"abstract":"<p><p>The integration of digitalization and sustainable tourism presents a distinct opportunity for promoting equitable economic growth, especially within the context of the Belt and Road Initiative (BRI). This study examines the interaction between digital infrastructure, tourism, and sustainable development, highlighting the essential role of digitalization in influencing economic results. To this end, critical digital metrics, such as ICT imports, broadband penetration, and secure server density, are examined in conjunction with tourism revenues and employment indicators to assess their collective effects on sustainability. Applying an extended Solow Growth model alongside the two-step system Generalized Method of Moments (GMM) approach to 39 BRI nations over the last decade suggests that secure digital infrastructure, particularly broadband and secure servers, significantly enhances the employment impact of tourism. These findings emphasize the value of targeted digital investment and inclusive policy frameworks. The study contributes to the integration of Sustainable Tourism Theory and Digital Transformation Theory by providing empirical insights into their combined relevance for sustainable development.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"394 ","pages":"127420"},"PeriodicalIF":8.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145211208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Changes in dissolved organic matter chemistry of plateau lakes along gradients of human activity intensity in Yunnan Province, China.","authors":"Lei Xu, Wenjun Zhong, Zetian Liu, Qian Hu, Xin Xiong, Jianlin Tang, Tao Chen, Wei Liao, Aiwen Zhong","doi":"10.1016/j.jenvman.2025.127513","DOIUrl":"https://doi.org/10.1016/j.jenvman.2025.127513","url":null,"abstract":"<p><p>Plateau lake systems are highly sensitive indicators and amplifiers of global climate change, while human activities are emerging as a growing threat to their ecological health and carbon cycling. As the dominant organic carbon pool, dissolved organic matter (DOM) plays essential roles in lake biogeochemical cycles and ecosystem health. However, the impacts of human activities along intensity gradients on DOM chemistry in plateau lakes remain unknown. Here we quantified human activity intensity (HAI) of nine plateau lakes in Yunnan Province (China) based on land use/cover data, coupled with DOM characterization using spectroscopic techniques and Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) to address these issues. The results showed that the pronounced spatial heterogeneity in the quantity and quality of DOM, and it was highly associated with HAI values across the nine plateau lakes. With increasing HAI values, the dissolved organic carbon, absorption coefficients at 355 nm, DOM aromaticity, humification degree, abundances of fluorescent components, and heteroatom-bearing compounds all significantly increased in plateau lakes. Anthropogenic-induced nutrient inputs along with allochthonous DOM, shifted the source of autochthonous DOM from submerged plant degradation to algal and/or phytoplankton metabolisms. This shift further significantly elevated the proportions of heteroatom molecules in DOM, and consequently complicated the organic matter pool in plateau lakes. We conclude that intensified human activities could significantly alter DOM quantity and quality, and potentially affect its biogeochemical function in plateau lake systems.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"394 ","pages":"127513"},"PeriodicalIF":8.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145211246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Achieving partial nitritation-anammox in membrane-aerated biofilm reactor by hydroxylamine addition.","authors":"Ning Mei, Fangxu Jia, Ying Liu, Yiran Li, Xin Qi, Baohong Han, Xu Zhang, Tao Liu, Hong Yao","doi":"10.1016/j.jenvman.2025.127404","DOIUrl":"https://doi.org/10.1016/j.jenvman.2025.127404","url":null,"abstract":"<p><p>The membrane-aerated biofilm reactor (MABR) is naturally suitable for partial nitritation-anammox (PN/A) because aerobic and anaerobic microorganisms can grow in different biofilm layers. However, suppressing nitrite-oxidizing bacteria (NOB) in the oxygen-rich inner MABR biofilms remains challenging, while anammox bacteria (AnAOB) in the outer layer are more vulnerable to many harsh treatments. This study demonstrated the strategy of applying hydroxylamine (NH₂OH) to achieve stable PN/A in MABR. Over 250 days, long-term experiments showed that low dissolved oxygen (0.06-0.20 mg L^-1) could not suppress NOB, while both continuous and intermittent 10 mg L^-1 NH₂OH addition not only achieved effective NOB suppression but also significantly promoted ammonia-oxidizing bacteria and AnAOB. Consequently, the nitrogen removal efficiency increased from 74.0 ± 1.1 % to 91.7 ± 1.6 %. Fundamentally, NH₂OH addition rapidly changed the transcription levels of key functional genes in membrane biofilms, resulting in a significant decrease in nxrB transcription level by 68.6 ± 3.8 % and an increase in those of amoA and hzsB by 1835.8 ± 307.2 % and 314.2 ± 112.7 %, respectively. NH₂OH addition resulted in the temporary accumulation of hydrazine and nitric oxide at low levels, which collectively contributed to NOB suppression. Particularly, Nitrospira, \"Ca. Nitrotoga\" and Nitrolancea (all three distinct NOB genera present in MABR biofilm) relative abundances decreased by 48.6 ± 7.5 %, 10.8 ± 2.5 %, and 75.0 ± 6.8 % respectively, which alleviated NOB adaptation risk. Therefore, NH₂OH can be used to support NOB suppression in MABR.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"394 ","pages":"127404"},"PeriodicalIF":8.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145211217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}