Environmental Research最新文献

{"title":"Manganese-Crosslinked Porous Carbon for Phosphorus Recovery and Soil Remediation: A Sustainable Strategy Featuring Fast Adsorption and Controlled Release.","authors":"Wei Mao, Xuewu Shen, Changqing Xu, Huaxin Lei, Xiaona Zheng, Ruohan Li, Lixun Zhang, Nuanling Wen, Yuntao Guan","doi":"10.1016/j.envres.2026.125926","DOIUrl":"https://doi.org/10.1016/j.envres.2026.125926","url":null,"abstract":"<p><p>Developing efficient systems to recover phosphorus (P) from water is critical for mitigating aquatic eutrophication and advancing sustainable P cycling. Herein, a porous carbon skeleton was synthesized via pyrolysis of manganese-crosslinked sodium alginate (Mn/SA-C-S) for efficient P adsorption and subsequent soil remediation. Mn/SA-C-S exhibited rapid P adsorption (14.61 mg/g within 200 min) and controlled release (∼10% desorption over 500 min) via precipitation and surface complexation. The P-rich Mn/SA-C-S (Mn/SA-C-S-P) sustains soil available P (∼109 mg/kg), enhances plant P uptake, and reduces P loss. Crucially, Mn/SA-C-S-P application significantly reshaped the soil microbial community, enriching key functional groups involved in nutrient cycling. Life cycle assessment revealed that Mn/SA-C-S production emits 9.19 kg CO₂ eq, which is 1.9 to 17.62 times lower than values reported in the literature for biochar-based materials. Producing one ton of Mn/SA-C-S-P yields a net benefit of $487.48. This study provides a proof of concept for recovering P from wastewater and reusing it as a resource toward sustainable P management.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"125926"},"PeriodicalIF":8.2,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149206265","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":"Revealing Spatiotemporal NO_x Emission Dynamics in the Yangtze River Delta Using Physics-Informed Neural Networks and TROPOMI Observations.","authors":"Qin He, Kai Qin, Hongrui Gao, Man Sing Wong, Jason Blake Cohen","doi":"10.1016/j.envres.2026.125952","DOIUrl":"https://doi.org/10.1016/j.envres.2026.125952","url":null,"abstract":"<p><p>Accurate estimation of nitrogen oxide (NO_x) emissions is essential for characterizing their impacts on atmospheric environment and supporting air pollution management. This study introduces an innovative inversion framework based on a Physics-Informed Neural Network (PINN), designed to derive NO_x emissions from TROPOspheric Monitoring Instrument (TROPOMI) satellite observations. By embedding the physical laws governing atmospheric processes, this method effectively bridges traditional data assimilation techniques with the computational efficiency of deep learning. Unlike purely data-driven models, it directly integrates physical constraints from atmospheric mass continuity equation into the model training process, thereby avoiding the computational burden associated with chemical transport models (CTMs) and removing the need for CTM simulations for supervision. Application to the Yangtze River Delta region in China (2018-2023) revealed clear spatiotemporal variations in NO_x emissions, capturing the reduction during the COVID-19 pandemic and the subsequent recovery. Emission uncertainties were quantified using Monte Carlo dropout, providing robust error estimates alongside the inversion results. The proposed framework provides a computationally efficient and physically grounded basis for NO_x emission inversion, with broad applicability to air quality assessment and environmental management.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"125952"},"PeriodicalIF":8.2,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149206233","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":"Molecular characteristics and formation mechanisms of chlorinated disinfection byproducts from diatomaceous organic matter: Deciphering intracellular vs. extracellular contributions via FT-ICR MS and machine learning.","authors":"Hehua Wang, Sihong Li, Wenjuan Wang, Lei Li, Hangzhou Xu, Haiyan Pei","doi":"10.1016/j.envres.2026.125956","DOIUrl":"https://doi.org/10.1016/j.envres.2026.125956","url":null,"abstract":"<p><p>Diatom-derived algal organic matter (AOM), including intracellular organic matter (IOM) and extracellular organic matter (EOM), is an important precursor of disinfection byproducts (DBPs) in drinking water sources during diatom blooms. Clarifying the differences in the toxicity and formation mechanisms of chlorinated DBPs between IOM and EOM is crucial for identifying priority removal targets and optimizing drinking water treatment. However, these differences remain poorly understood. In this study, the toxicity, formation characteristics, and underlying mechanisms of IOM-derived DBPs and EOM-derived DBPs were systematically investigated and compared, with a focus on molecular-level interactions. At the same dissolved organic carbon (DOC) concentration (1.135 mgC/L), chlorinated IOM showed higher cytotoxicity than chlorinated EOM. IOM preferentially formed more nitrogenous DBPs, including (semi-)volatile and macromolecular species, whereas EOM produced more carbonaceous DBPs. Fourier transform ion cyclotron resonance mass spectrometry combined with machine learning revealed distinct molecular signatures of DBP precursors in IOM and EOM. Precursors of high-molecular-weight carbonaceous DBPs had lower unsaturation and oxidation degrees but higher aromaticity, whereas precursors of macromolecular nitrogenous DBPs showed the opposite pattern. Given the substantially higher DOC concentration of IOM than EOM at the same diatom density, IOM should be prioritized for removal. These findings provide molecular-level insight for controlling diatom-related DBP risks in drinking water treatment.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"125956"},"PeriodicalIF":8.2,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149206282","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":"Synergistic bioremediation of metolachlor-contaminated soil by Penicillium oxalicum MetF1 and earthworms: Enhanced degradation, microbial community restructuring, and ring-opening metabolic activation.","authors":"Pengtao Chen, Ruiting Dong, Meiqi Jiang, Lixia Zhao, Huike Ye, Mohan Bai, Liping Weng, Yang Sun","doi":"10.1016/j.envres.2026.125932","DOIUrl":"https://doi.org/10.1016/j.envres.2026.125932","url":null,"abstract":"<p><p>The chloroacetamide herbicide metolachlor (MET) is a widespread environmental contaminant posing risks to aquatic and soil ecosystems. Although the fungal strain Penicillium oxalicum MetF1 efficiently degrades MET in liquid culture, its performance in complex soil environments remains unexplored. Recognizing the multifunctional roles of earthworms as soil ecosystem engineers-including their capacity to modulate microbial activity and pollutant bioavailability-we incorporated Eisenia fetida into a synergistic bioremediation system with P. oxalicum MetF1 in MET-contaminated soil. The synergistic treatment achieved 93.88% MET removal within 14 days, significantly outperforming treatments with the fungus (81.75%) or earthworms (30.10%) alone. Metabolite dynamics revealed that earthworms accelerated the transformation of MET intermediates (M2H, MESA, MDES), with a unique enrichment of genes encoding key ring-opening enzymes (3-hydroxyphenylacetate 6-hydroxylase, tyrosine aminotransferase). Earthworms also decreased soil pH toward neutrality, mobilization of available phosphorus, and stabilization of organic carbon, and may partially offset microbial alkali-hydrolyzable nitrogen consumption. High-throughput sequencing demonstrated that the synergistic system alleviated pesticide-induced stress, increased microbial alpha diversity, enriched beneficial degraders (Sphingomonas, Flavobacterium, Fusarium), suppressed pathogenic Blumeria, and fostered tighter co-occurrence networks with more positive interactions. Functional prediction revealed upregulation of carbohydrate and amino acid metabolism pathways as well as the xenobiotics biodegradation pathway, with phenylacetate and tyrosine degradation pathways providing an efficient metabolic route for MET ring-opening. Earthworms exhibited low MET bioaccumulation (BAF < 1) and net weight gain, indicating limited bioaccumulation potential and the absence of obvious lethal effects. However, sublethal effects and the toxicity of MET metabolites (M2H, MESA, and MDES) require further investigation. Collectively, this study demonstrates a powerful earthworm-fungus synergistic system for MET remediation, unravels its microbial and biochemical regulatory networks governing enhanced performance, and offers a mechanistic framework for deploying multi-organism strategies in the remediation of persistently contaminated soils.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"125932"},"PeriodicalIF":8.2,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149206300","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":"Kinetics, radical chemistry and machine-learning-optimized abatement of capecitabine by UV/peroxymonosulfate: simultaneous micropollutant removal and attenuation of disinfection by-products formation potential.","authors":"Zi-Han Feng, Yan Yin, Zhen-Yang Zhou, Dong-Su Bi, Fu-Xiang Tian, Jing Ye, Ling-Yao Meng, Dong-Sheng Zhao","doi":"10.1016/j.envres.2026.125954","DOIUrl":"https://doi.org/10.1016/j.envres.2026.125954","url":null,"abstract":"<p><p>As a widely used anticancer prodrug, capecitabine (CAPT) is poorly removed by conventional treatment and may generate toxic transformation products and disinfection by-products (DBPs). This study systematically evaluated CAPT abatement by UV/peroxymonosulfate (UV/PMS), integrating reaction kinetics, energy analysis, reactive species quantification, machine learning, transformation products identification and subsequent disinfection assessment. UV/PMS reduced CAPT below the quantification limit within 4 min, with the pseudo-first-order rate constant (k_obs) of 0.7854 min^-1 and the lowest electrical energy per order (EE/O) among the tested processes. SO₄•^- dominated CAPT oxidation, contributing 65.20% of the overall degradation. HO• contributed 23.92%, while direct UV photolysis and PMS oxidation accounted for 9.94% and 0.94%. The contribution of singlet oxygen was negligible. The second-order rate constants of CAPT with SO₄•^- and HO• were 4.02 × 10⁹ and 7.48 × 10⁹ M^-1 s^-1, and UV/PMS exhibited strong process synergy effect. The PMS dose of approximately 200 μM under mildly alkaline conditions provided a favorable balance between degradation kinetics and energy consumption, whereas natural organic matter exerted the strongest matrix inhibition. XGBoost accurately predicted k_obs and EE/O, and Pareto optimization identified a balanced operating point with k_obs≈5.5 min^-1 and EE/O≈1.88 kWh m^-3 order^-1. Transformation products were tentatively identified and evaluated using DFT calculations, Fukui functions, frontier molecular orbital analysis and elemental ratio analysis. The results suggested that oxidation likely involved the fluoropyrimidine moiety and the aliphatic side chain, followed by hydroxylation, defluorination, deamination, hydrolysis and C-N bond cleavage. UV photodegradation alone increased the halogen reactivity of residual precursors, whereas UV/PMS minimized both total and toxicity-weighted levels of the four targeted DBPs during chlorination and chloramination. In conclusion, UV/PMS combined rapid, energy-efficient CAPT abatement with reduced DBPs formation and the related-toxicity burden.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"125954"},"PeriodicalIF":8.2,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149206313","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":"Facilitating non-radical peroxymonosulfate oxidation of tetracyclines driven by struvite crystallization.","authors":"Qiuyue Yu, Xuewei Huang, Zhi-Long Ye, Aiqiu Lin, Wenqian Liao","doi":"10.1016/j.envres.2026.125957","DOIUrl":"https://doi.org/10.1016/j.envres.2026.125957","url":null,"abstract":"<p><p>Eliminating residual antibiotics during struvite recovery from livestock wastewater is essential to prevent the spread of antibiotic resistance. In this work, the effects of in-situ struvite crystallization on the degradation of typical veterinary antibiotics, tetracyclines (TCs), by non-radical peroxymonosulfate (PMS) oxidation were investigated. Results revealed that the process of struvite crystallization enhanced PMS oxidation of TCs with k_obs values reaching 1.95-2.15 times those of PMS alone. ¹O₂ and electron transfer processes were identified as the dominant non-radical pathways. Electrochemical analyses indicated that electron transfer processes would be more active through crystallization than pre-formed crystals in PMS oxidation due to the higher interfacial reactivity. Mg:P molar ratio and pH affected TCs degradation through regulating struvite crystallization and altering the speciation of TCs and PMS, with Mg:P ratio of 1.0 and pH 9.2-9.8 being optimal for facilitating ¹O₂ generation and PMS oxidation. In the presence of humic acid (HA), HA-TCs complexes caused an inhibitory effect on TCs degradation, and excess Mg²⁺ mitigated this inhibition by reducing the direct association between TCs and HA. Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) and fluorescence spectroscopy analyses revealed that HA underwent selective molecular restructuring, with nitrogen-containing and highly condensed aromatic components being converted into more oxygenated and less aromatic products through oxygenation, which could further favor electron transfer pathways. This study highlights that struvite crystallization enhances non-radical oxidation and provides new insights into antibiotic removal with simultaneous phosphorus recovery in livestock wastewater.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"125957"},"PeriodicalIF":8.2,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149206257","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":"Low-to-Moderate Arsenic Exposure and DNA Methylation: A Review of Life-Course Evidence and Mechanistic Insights.","authors":"Han Xiao, Yana Peshkova, Li Wang, Fernando Rodrigues Lima, Fabien Guidez","doi":"10.1016/j.envres.2026.125928","DOIUrl":"https://doi.org/10.1016/j.envres.2026.125928","url":null,"abstract":"<p><p>Arsenic exposure affects an estimated 94 to 220 million people worldwide, yet most research has centered on high-dose endemic settings, leaving the epigenetic effects of environmentally relevant exposures undercharacterized. This narrative review synthesizes evidence from 68 studies on DNA methylation alterations associated with low-to-moderate arsenic exposure, integrating human epidemiological, animal, and in vitro data. Gene-specific findings were stage-patterned across the life course, whereas global and repetitive-element methylation findings were heterogeneous. Prenatal exposure perturbs mitochondrial biogenesis, growth and endocrine regulation, vascular development and neurodevelopment. Childhood evidence rests on two studies, implicating mitochondrial, growth-regulatory and mismatch repair genes. In adults, oxidative stress response, cancer and cardiovascular pathways, and metabolic dysfunction are most often affected. Experimental models corroborate several of these processes and show that methylation alterations can persist after exposure ceases. Although CpG-site replication across cohorts remains limited, pathway convergence across independent populations supports biological plausibility. Notably, methylation alterations are detectable at or below the WHO guideline of 10 μg/L, particularly during sensitive developmental windows, although whether these changes lead to disease has not been established. Beyond the nuclear genome, mitochondria are a plausible target for arsenic-induced epigenetic disruption through their roles in one-carbon metabolism and redox regulation. This review critically evaluates mitochondrial DNA methylation findings against five methodological quality criteria and proposes a framework for future investigations, addressing a field where biological rationale has outpaced technical validation. Research priorities include longitudinal designs that link methylation biomarkers to clinical outcomes and intervention trials that assess reversibility to inform regulation.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"125928"},"PeriodicalIF":8.2,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149206264","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":"Hierarchical porous flower-like NiO/NiS with S-type heterojunction for deep mineralization of antibiotics.","authors":"Fengqi Qiu, Qian Zhang, Jinwei Liu, Yuting Qin, Zhenhua Xue","doi":"10.1016/j.envres.2026.125917","DOIUrl":"https://doi.org/10.1016/j.envres.2026.125917","url":null,"abstract":"<p><p>A 3D flower-like NiO/NiS S-scheme photocatalyst (MNOS-3) was constructed via Ni-MOF calcination and in-situ solvothermal sulfurization. Assembled from 2D ultrathin nanosheets with local topological mesoporous channels, MNOS-3 exhibited broadened visible-light absorption and significantly reduced charge transfer resistance. Under visible light, MNOS-3 achieved an order-of-magnitude kinetic leap compared to pure phases, with rate constants for tetracycline (TC) and oxytetracycline (OTC) reaching 3.85 ×10^-2 min^-1 and 3.61×10^-2 min^-1, respectively. Radical trapping tests established the ROS contribution level as ·O₂^- > h⁺ > ·OH. XPS and Mott-Schottky analyses confirmed that an interfacial built-in electric field drives an S-scheme charge transfer mechanism, recombining weak carriers while retaining the strongly reducing NiS conduction band (-1.34 V) and oxidizing NiO valence band (+1.59 V). Synergistic ROS attack induced defunctionalization and ring-opening fragmentation of the tetraphenyl skeleton. LC-MS and ECOSAR evaluations confirmed deep mineralization of intermediates into harmless CO₂ and H₂O with effective toxicity elimination. This work provides a universal strategy for developing highly active, durable S-scheme heterojunctions for environmental remediation.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"125917"},"PeriodicalIF":8.2,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149206304","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 cold excess on pregnancy outcomes in women undergoing assisted reproductive technology: A large retrospective cohort study in Anhui, China.","authors":"Jing Fang, Zhizhen Jin, Zeling Zhang, Lei Luo, Meihong Hu, Shun Bai, Rentao Jin, Lu Zong, Nan Guo, Qi Jin, Xihao Du, Bo Xu, Liming Wu","doi":"10.1016/j.envres.2026.125951","DOIUrl":"https://doi.org/10.1016/j.envres.2026.125951","url":null,"abstract":"<p><p>To investigate the association between cold exposure and implantation failure or pregnancy loss during different assisted reproductive technology (ART) exposure windows. This retrospective cohort study included 5905 embryo transfer cycles from the First Affiliated Hospital of the University of Science and Technology of China between 2018 and 2022. Individual cold exposure was quantified using a novel daily mean cold excess (DMCE) metric, calculated based on the 5th, 7.5th, and 10th percentile thresholds of historical temperature distributions. Associations between cold exposure across eight defined windows with implantation failure or pregnancy loss were assessed using logistic regression to estimate odds ratio (OR) and 95% confidence intervals (CI), adjusting for demographic, clinical, and environmental confounders. Subgroup analyses were performed to explore potential heterogeneity and sensitivity analyses were conducted to test the robustness of our findings. A total of 5905 participants (mean age 30.7 ± 4.6 years) were included, 2543 (43.1%) achieved a live birth. Significant increases in implantation failure or pregnancy loss risk were identified during the window from embryo transfer to the end of the first trimester, each 0.1-unit increase of DMCE was associated with elevated odds of implantation failure or early pregnancy loss, with ORs of 1.07 (95% CI: 1.03-1.11) for severe (DMCE_P5), 1.04 (95% CI: 1.02-1.07) for moderate (DMCE_P7.5), and 1.03 (95% CI: 1.01-1.05) for mild (DMCE_P10) cold definitions. Subgroup analyses revealed greater vulnerability among women with lower education levels and those undergoing fresh embryo transfer during the window from embryo transfer to the end of the first trimester. Results remained consistent across sensitivity analyses. High-intensity cold exposure during the first trimester represents a critical exposure period and independent risk factor for implantation failure or early pregnancy loss in ART pregnancies. These findings underscore the necessity of implementing thermal protection measures from embryo transfer to the first trimester, especially for vulnerable groups during winter months.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"125951"},"PeriodicalIF":8.2,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149206259","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":"Spatial heterogeneity and seasonal dynamics of vegetation-soil carbon storage in shallow lake wetlands of eastern China.","authors":"Xiaojuan Xu, Yin Xi, Fusheng Jiao, Jing Liu, Naifeng Lin, Changxin Zou, Dayi Lin","doi":"10.1016/j.envres.2026.125904","DOIUrl":"https://doi.org/10.1016/j.envres.2026.125904","url":null,"abstract":"<p><p>Shallow lake wetlands have important vegetation and soil carbon pools; yet, habitat-level differences in carbon storage among lake types have been insufficiently quantified. In this study, we compared three representative shallow lake wetlands in eastern China, Qin Lake, Changdang Lake, and Hongze Lake, during low- and high-water periods. We combined Sentinel-2-based land-cover classification with field measurements to distinguish aquatic vegetation functional types and to estimate vegetation carbon density, surface soil organic carbon density, and combined vegetation-surface soil organic carbon storage. The three lakes showed distinct habitat composition and carbon-storage structures. Qin Lake had the highest proportion of emergent vegetation, Changdang Lake had the highest proportion of floating-leaved vegetation, and Hongze Lake was dominated by open water with relatively strong aquaculture disturbance. Under the biomass-accounting scheme adopted in this study, emergent vegetation showed the highest estimated vegetation carbon density and generally made a relatively high contribution to the estimated vegetation carbon pool, whereas surface soil carbon dominated the combined carbon pool, accounting for 69.82%-93.93% of total estimated storage. Period-averaged combined carbon storage was 8.75, 85.70, and 1023 kt C in Qin Lake, Changdang Lake, and Hongze Lake, respectively. Between the low- and high-water periods, the combined carbon storage was estimated to be lower in Qin Lake and Hongze Lake but higher in Changdang Lake, reflecting differences in habitat composition and habitat-specific carbon density. These results illustrate the value of habitat-level and functional-type-based carbon accounting for interpreting carbon-storage heterogeneity in shallow lake wetlands.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"125904"},"PeriodicalIF":8.2,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149206249","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}