Journal of Environmental Management最新文献

{"title":"Salinization-driven coupling of organic matter and phytoplankton in ice-covered lakes: Implications for carbon cycling","authors":"Shihuan Wang ,&nbsp;Xiaohong Shi ,&nbsp;Shengnan Zhao ,&nbsp;Weiying Feng ,&nbsp;Rong Wu ,&nbsp;Fan Zhang ,&nbsp;Sheng Zhang","doi":"10.1016/j.jenvman.2026.129803","DOIUrl":"10.1016/j.jenvman.2026.129803","url":null,"abstract":"<div><div>Seasonally ice-covered lakes are vital ecosystems in cold and arid regions, playing a key role in the global carbon cycle. However, the dynamics of dissolved organic matter (DOM) during freeze-thaw processes and its interaction mechanisms with phytoplankton in these lakes under the context of salinization remain unclear, constraining an accurate assessment of the evolution of their carbon sink function. In this study, four lakes with distinct salinization gradients in the cold and arid regions of China were selected as natural laboratories. Through systematic sampling during the ice-covered period, we integrated physicochemical parameters, dissolved organic matter (DOM) optical properties, and phytoplankton community data to reveal the coupling mechanisms of the DOM-phytoplankton system under salinization regulation. The results indicate that: (1) DOM in ice-covered lakes is shaped by both its initial state and under-ice dynamic processes. With increasing salinity, DOM composition exhibits characteristics of lower aromaticity and lower humification. (2) Salinization is the core driver shifting the mechanisms of phytoplankton community assembly, with an independent explanation rate of 18.71% for community variation, far exceeding that of nutrients (6.89%) and DOM (4.93%). (3) In high-salinity environments, environmental filtering dominates, with communities primarily composed of mixotrophic algae like Chroomonas, displaying a “broad niche, low diversity” pattern (mean B = 0.76). In low-salinity environments, competition predominates, where species coexistence is achieved through niche differentiation, exhibiting a “narrow niche, high diversity” pattern (mean B = 0.33). Salinization stress drives the phytoplankton system from a “high redundancy-stable” to a “low redundancy-high risk” transition, thereby altering the fate of carbon cycling during the ice-covered period. As climate warming exacerbates ice regime instability and salinization of inland waters, the systematic shifts in lake DOM and phytoplankton communities not only signify biodiversity loss but also herald a fundamental restructuring of carbon cycling patterns. Our findings provide theoretical support for predicting the future responses of stressed ecosystems, while offering a scientific basis for the ecological management and carbon sink function assessment of lakes in cold and arid regions.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"407 ","pages":"Article 129803"},"PeriodicalIF":8.4,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831833","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":"Biogenic carbon dioxide storage and mineral carbonation uptake in EU buildings","authors":"Dominik Steinberger-Maierhofer ,&nbsp;Nicolas Alaux ,&nbsp;Delphine Ramon ,&nbsp;Semjon Popek ,&nbsp;Tajda Potrč Obrecht ,&nbsp;Judit Kockat ,&nbsp;Xiaoyang Zhong ,&nbsp;Alessio Mastrucci ,&nbsp;Marcella Ruschi Mendes Saade ,&nbsp;Karen Allacker ,&nbsp;Alexander Passer ,&nbsp;Martin Röck","doi":"10.1016/j.jenvman.2026.129794","DOIUrl":"10.1016/j.jenvman.2026.129794","url":null,"abstract":"<div><div>Storing atmospheric carbon dioxide (CO₂) in products is identified as one of the key measures for carbon dioxide removal. The building sector and its potential use as a carbon sink is quickly becoming a consideration for active policies in Europe. However, while this remains a key element of informed decision-making, robust data on CO₂ storage and uptake potentials vis-à-vis current greenhouse gas (GHG) emissions in the buildings sector is still lacking. Here, we quantify the carbon dioxide storage and uptake potentials for EU buildings in 2020 on three hierarchical levels: the material, building, and building stock level. We assess the potential of bio-based materials and mineral carbonation and compare the results to the baseline GHG emissions of the EU building stock. At the building level, bio-based materials show the largest storage effects. Carbonation during the use stage of buildings is smaller than in the end-of-life stage, yet both yield non-negligible effects that should be considered in life cycle assessments of buildings. However, when calcination emissions in the production stage are considered, the carbonation uptake of mineral materials does not lead to net removal of CO₂ at the building level. At the building stock level, net biogenic carbon storage effects result in net storage equivalent to 1.27% of embodied GHG emissions, while mineral CO₂ fluxes, including carbonation, result in net emissions equivalent to 10.16% of embodied GHG emissions in the EU-27 building stock in 2020. The results at the material, building, and building stock levels can be used as a comparative baseline for future net-zero GHG research in the European context.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"407 ","pages":"Article 129794"},"PeriodicalIF":8.4,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147832079","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":"Divergent seasonal enzyme dynamics reveal functional shifts in the Jingjiang River floodplain","authors":"Jie Mei ,&nbsp;Zhonghua Yang ,&nbsp;Yao Yue","doi":"10.1016/j.jenvman.2026.129866","DOIUrl":"10.1016/j.jenvman.2026.129866","url":null,"abstract":"<div><div>Seasonal enzyme dynamics in floodplain soils reflect shifts in hydrological regime, yet drivers shaping the magnitude of these responses remain poorly quantified in regulated river systems. We characterized seasonal enzyme dynamics in the Jingjiang River floodplain (middle Yangtze River, China), comparing high-water (August 2024) and low-water (November 2024) periods across eight sites (n = 48). Results showed divergent responses: urease decreased 89.3%, invertase 39.0%, and alkaline phosphatase 17.2%, while catalase increased 104.7% (all p &lt; 0.05). Soil moisture declined 39.1% and pH increased from 7.45 to 8.44. The pH-urease correlation (ρ = −0.877) exceeded the moisture-urease correlation (ρ = 0.576), a pattern consistent with pH being a prominent factor in the observed urease suppression. Initial soil organic carbon (SOC) was associated with phosphatase response magnitude at the site level (r = 0.74, p &lt; 0.05, n = 8): high-SOC sites (&gt;7 g kg⁻¹) exhibited a mean phosphatase increase (+34.7%), whereas low-SOC sites declined (−57.1%). Collectively, these findings provide a baseline for understanding seasonal biogeochemical dynamics in dam-regulated floodplains and generate the hypothesis that soil organic carbon content may serve as a practical indicator for identifying sites with greater functional stability across hydrological states.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"407 ","pages":"Article 129866"},"PeriodicalIF":8.4,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147861472","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":"Digital-driven green: Does supply chain digitalization accelerate corporate green transition?","authors":"Wenze Wu ,&nbsp;Mei Sun ,&nbsp;Mark Goh","doi":"10.1016/j.jenvman.2026.129846","DOIUrl":"10.1016/j.jenvman.2026.129846","url":null,"abstract":"<div><div>Amid the synergistic evolution of the digital economy and green development, the extent to which supply chain digitalization (SCD) empowers corporate green transition (CGT) in the manufacturing sector remains unexplored. As such, this study constructs firm-level indices of SCD and CGT through textual analysis of annual reports of Chinese A-share manufacturing enterprises, and then empirically examines the actual impact of SCD on CGT and their influence mechanisms. The results show that: (1) SCD has a significantly positive effect on CGT, and this conclusion has been reinforced by a series of robust tests. (2) Mechanism analysis demonstrates green continuous innovation, supply chain stability and financing constraints mediates the SCD-CGT nexus. (3) Mechanism analysis reveals the positive effect of SCD on CGT is particularly pronounced in regions with low climate policy uncertainty and in green finance reform and innovation polit zones, as well as among state-owned enterprises. These findings offer new insights into the role of SCD in facilitating CGT and provide practical implications for firms seeking to advance sustainable and green development strategies.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"407 ","pages":"Article 129846"},"PeriodicalIF":8.4,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147861468","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":"The binding effect of biochar with polycyclic aromatic hydrocarbons and their derivatives: Role in carbon sequestration and pollutant removal efficiency","authors":"Muhammad Fawad ,&nbsp;Lingyu Zhang ,&nbsp;Abdelrahman Ibrahim ,&nbsp;Xinyi Xu ,&nbsp;Tong Wu ,&nbsp;Miao Han ,&nbsp;Vishnu D. Rajput ,&nbsp;Chao Qin ,&nbsp;Wanting Ling","doi":"10.1016/j.jenvman.2026.129883","DOIUrl":"10.1016/j.jenvman.2026.129883","url":null,"abstract":"<div><div>Polycyclic aromatic hydrocarbons (PAHs) and their toxic derivatives pose a significant threat to human health and the environment. Conventional remediations, such as chemical oxidation and hydrothermal treatments, are costly and generate secondary toxic byproducts, limiting their field applicability. This review aims to discuss the dual role of biochar as a cost-effective sorbent to remediate PAHs, and simultaneously provide an environment for PAH-degrading and carbon-sequestering microbial communities. Nonetheless, PAHs are released with pyrolysis gases during biochar production, which usually condense in the porous structure of biochar, having limited bioavailability. Furthermore, biochar engineering strategies such as wood ash amendments to feedstock and controlled pyrolysis conditions (350-550°C) in a vapor-solid separation chamber have been proposed to minimize PAHs contamination in biochar. This review elucidates hydrophobic interactions, pore-filling mechanisms, and π-π electron donor-acceptor interactions as dominant mechanisms for PAH sorption and long-term stabilization in soil. Quantitative evidence revealed that copper-modified <em>Arundo donax</em> and rice husk biochar exhibited high phenanthrene removal efficiencies (94.0-97.6%). Furthermore, rice husk biochar and immobilized bacteria removed 95.50% of phenanthrene and 73.78% of benzo[a]pyrene. Despite progress in safe biochar synthesis and PAHs removal from soil, limited research has addressed the remediation of PAH derivatives, which remains a critical knowledge gap. Therefore, future research should focus on designing multifunctional biochar, along with defined consortia of PAH-degrading and carbon-sequestration microbes to simultaneously enhance sorption and microbial degradation of PAH derivatives for long-term carbon stabilization in subsoil under field conditions.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"407 ","pages":"Article 129883"},"PeriodicalIF":8.4,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147861473","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":"Hydrodynamic and sedimentary processes in sedimentation fields: the requirement for continued maintenance to preserve restored intertidal habitat","authors":"Jonathan Dale ,&nbsp;Cai J.T. Ladd ,&nbsp;Michelle Farrell ,&nbsp;Michael P. Kennedy ,&nbsp;Gabriela Ciappara ,&nbsp;Chloe James ,&nbsp;Iain Fairley","doi":"10.1016/j.jenvman.2026.129798","DOIUrl":"10.1016/j.jenvman.2026.129798","url":null,"abstract":"<div><div>Globally, approximately 46.4% of saltmarsh has been lost or degraded. Sedimentation fields are one method of restoring and creating compensatory intertidal habitat, by enclosing mudflat to reduce hydrological forcing, trap sediment, and encourage saltmarsh establishment. To date, sedimentation fields have predominantly been studied using numerical models or with a focus on the initial deposition of sediment and plant colonisation. Consequently, it remains unknown whether the created habitat in sedimentation fields can become self-sustaining or whether there is a need for continued maintenance to prevent subsequent erosion. Here, we present a novel empirical investigation of Rumney Great Wharf, Wales, where sedimentation fields were constructed between 1989 and 2005 but no maintenance has been carried out since 2010. Hydrodynamic measurements indicate greater spatial differences in current velocity during the summer, and that suspended particulate matter was higher outside the sedimentation fields in comparison to inside the enclosed area during the summer but not during the winter. Between May 2023 and 2024, 87% of the surface area of the sedimentation fields experienced erosion resulting in the net loss of 9531 m³ of sediment. This loss occurred despite indications from on-site sediment trap data that there is the potential for sediment to accrete at more than 10 cm/year at mudflat sites and up to 9 cm/year at saltmarsh sites. These results suggest that the created marsh is not self-sustaining, and continued maintenance of the sedimentation fields might be required. Further research is required into sedimentary processes in sedimentation fields, both to inform the management of such schemes and to identify suitable locations for future sedimentation field construction. Assessments of marsh functioning and ecosystem service delivery in sedimentation fields are also needed to provide justification for future implementations of this restoration method.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"407 ","pages":"Article 129798"},"PeriodicalIF":8.4,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831615","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":"Deep learning-driven detection of municipal sludge moisture content based on feature images of compressed slices","authors":"Guotao Wang ,&nbsp;Yue Sun ,&nbsp;Penghe Zhu ,&nbsp;Shuaijun Yang ,&nbsp;Zijun Du ,&nbsp;Yuejia Chen ,&nbsp;Fuchun Liu ,&nbsp;Fu He ,&nbsp;Xinlei Zhang ,&nbsp;Tiefu Xu ,&nbsp;Yu Tao","doi":"10.1016/j.jenvman.2026.129826","DOIUrl":"10.1016/j.jenvman.2026.129826","url":null,"abstract":"<div><div>Traditional sludge moisture content detection methods suffer from response lag and insufficient accuracy within the critical dewatering range of 70%–85%. To address these limitations, this study proposes a novel rapid detection strategy that integrates the rheological properties of non-Newtonian fluids with deep learning. By analyzing the dynamic evolution of surface textures under a controlled thermal field, we established a robust correlation between sludge surface morphology and moisture content. Systematic investigation identified the optimal experimental conditions as circular slices of 1 mm thickness heated at 140 °C. Among the Convolutional Neural Networks evaluated, the C3D model was selected for its superior capability in extracting spatiotemporal features from the drying process. The resulting 16-category classifier achieved 81.25% accuracy on an independent test set. Furthermore, field validations conducted at six wastewater treatment plants across diverse climatic regions (Beijing, Harbin, Shenzhen) demonstrated the method's robustness and engineering applicability. This research provides a non-contact, high-efficiency pathway for real-time monitoring and intelligent control of sludge deep dewatering.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"407 ","pages":"Article 129826"},"PeriodicalIF":8.4,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147832132","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":"A reach-scale bioassessment index for highly disturbed large rivers based on Species–Area (length) models","authors":"Xiaodie Jiang ,&nbsp;Junyan Wu ,&nbsp;Yajing He ,&nbsp;Wenjuan Gao ,&nbsp;Mengjie Kang ,&nbsp;Yongjing Zhao ,&nbsp;Yongde Cui ,&nbsp;Hongzhu Wang","doi":"10.1016/j.jenvman.2026.129894","DOIUrl":"10.1016/j.jenvman.2026.129894","url":null,"abstract":"<div><div>Ecological health assessment in large rivers remains challenging due to their tremendous natural environmental heterogeneity, the difficulty of obtaining representative samples, and the absence of near-natural reference conditions. Using the Yangtze River as a case study, we develop a reach-scale biological index (O/E_<em>SL</em>) for large rivers using fish and macroinvertebrate data. The index is developed in three steps. First, we classify reaches of the Yangtze River mainstem and tributaries using long-term stable spatial and geomorphic factors to control natural variability. Second, we expand the assessment scale from sites to reaches to enhance the spatial representativeness and robustness of the assessment results. Third, drawing on the species–area (length) relationship, we construct observed species (<em>S</em>_<em>O</em>)–length (<em>L</em>) quantile regression models for each reach type to objectively define reference conditions, estimate expected species richness (<em>S</em>_<em>E</em>), and calculate the O/E_<em>SL</em> index as the ratio of <em>S</em>_<em>O</em> to <em>S</em>_<em>E</em>. The O/E_<em>SL</em> index demonstrates robust sensitivity to hydromorphological alterations and reveals a concerning ecological status in the Yangtze River—only 13% of the 93 evaluated reaches are classified as healthy. Finally, we propose a basic methodological framework for ecological health assessment in highly disturbed large rivers.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"407 ","pages":"Article 129894"},"PeriodicalIF":8.4,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147855632","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":"The composite of chicken manure, lime, and sepiolite enhanced sulfur availability and simultaneously reduced bioavailable Cd in Cd-contaminated soil","authors":"Weiping Gao ,&nbsp;Wenzhe Gao ,&nbsp;Ejazul Islam ,&nbsp;Yuanfan Wang ,&nbsp;Hao Li ,&nbsp;Yiding Xin ,&nbsp;Tingqiang Li","doi":"10.1016/j.jenvman.2026.129858","DOIUrl":"10.1016/j.jenvman.2026.129858","url":null,"abstract":"<div><div>Although the effectiveness of various soil amendments in immobilizing cadmium (Cd) has been well studied, their impact on soil nutrient cycling, particularly sulfur (S) transformation, is poorly understood. This study evaluated the effects of six single or composite immobilizing agents, including chicken manure (OM), biochar (B), lime (L), sepiolite (SE), OL (OM + L + SE), and BL (B + L + SE) on soil Cd bioavailability and S transformation via a pot experiment. The results showed that after 120 days of remediation, OL and BL exhibited the highest Cd immobilization efficacy, with CaCl₂-extractable Cd reduced by 94.7% and 95.8% (<em>P</em> &lt; 0.05), respectively, compared with CK. They effectively facilitated Cd sequestration into carbonate-bound (F2-Cd) and Fe/Mn oxide-bound (F3-Cd) fractions. Throughout the remediation, all agents reshaped inorganic S distribution and significantly enhanced S availability. Notably, at the end of remediation, OL significantly increased available S (AS) by 80.8% relative to CK, and exhibited the highest arylsulfatase (ASF) activity, indicating that OL had a sustained and powerful S mineralization capacity. Additionally, L, SE, and OL significantly enriched Bacteroidota and Bacillaceae. These taxa contributed to Cd sequestration and detoxification, and Bacillaceae further facilitated organic S mineralization. At the functional level, the significant upregulation of <em>tauD</em> and downregulation of cysK were closely associated with AS enhancement, collectively contributing to the AS pool. Overall, the OL composite emerged as an effective and sustainable amendment, concurrently mitigating Cd toxicity, enhancing S availability, and maintaining the supply of other essential nutrients (N, P, K), thereby improving overall soil quality.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"407 ","pages":"Article 129858"},"PeriodicalIF":8.4,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147831859","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":"Ecological lock-in and functional mismatch in abandoned coastal ponds: mechanisms and management implications","authors":"Yi'na Li ,&nbsp;Yanzi Cai ,&nbsp;Junjun Bai ,&nbsp;Ying Man ,&nbsp;Dongxue Li ,&nbsp;Qing Wang ,&nbsp;Yujia Zhai ,&nbsp;Ping Qi ,&nbsp;Tian Xie ,&nbsp;Baoshan Cui","doi":"10.1016/j.jenvman.2026.129882","DOIUrl":"10.1016/j.jenvman.2026.129882","url":null,"abstract":"<div><div>The recovery of coastal aquaculture ponds and salt pans into functional wetlands represents a widespread challenge in global coastal restoration, yet passive recovery strategies often fail to address legacy effects associated with habitat degradation and functional deficits. Taking the Yellow River Delta National Park as a case study, a comprehensive field survey was conducted on water and soil conditions, vegetation communities, and benthic assemblages. Results indicated that salinity and organic load in both water and soil were key environmental gradients associated with cross-habitat differences in biological communities, with redundancy analysis explaining 44.2% of the variance. Abandoned salt pans exhibited an ecological lock-in characterized by extremely depauperate biotic communities, where excessive soil salinity exceeding 3% and strong environmental filtering prevented vegetation colonization. In contrast, although abandoned aquaculture ponds maintained higher benthic biomass, elevated chemical oxygen demand (COD) and legacy soil phosphorus indicate a risk of endogenous pollution. Moreover, excessive water depth (&gt;1 m) substantially limited the effective foraging potential for shorebirds, resulting in a pronounced mismatch between resource abundance and accessibility. To address these constraints, this study proposes a conceptual “1+3+L” adaptive management framework, encompassing ecological production, functional zonal restoration, and ecological corridor connectivity. This framework integrates observed ecological constraints and functional patterns to form evidence-based management hypotheses aimed at addressing key legacy barriers in constructed wetlands and enhancing their functional potential as foraging habitats for waterbirds.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"407 ","pages":"Article 129882"},"PeriodicalIF":8.4,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147861695","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}