环境科学与生态学最新文献

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First evidence of aerobic microbial degradation of HFPO-DA in soils adjacent to fluorochemical plant: Degradation pathways, and potential functional genes and hosts 氟化工厂附近土壤中HFPO-DA需氧微生物降解的第一个证据:降解途径、潜在的功能基因和宿主
IF 13.6 1区 环境科学与生态学
Journal of Hazardous Materials Pub Date : 2025-09-15 DOI: 10.1016/j.jhazmat.2025.139880
Ziao Xing, Guoguang Wang, Shuaihao Liu, Hongyi Xue, Yana Wang, Guangzhi Rong, Haixia Wang, Yu Liu
{"title":"First evidence of aerobic microbial degradation of HFPO-DA in soils adjacent to fluorochemical plant: Degradation pathways, and potential functional genes and hosts","authors":"Ziao Xing, Guoguang Wang, Shuaihao Liu, Hongyi Xue, Yana Wang, Guangzhi Rong, Haixia Wang, Yu Liu","doi":"10.1016/j.jhazmat.2025.139880","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.139880","url":null,"abstract":"Hexafluoropropylene oxide (HFPO) oligomers used as the novel alternative of perfluorooctanoic acid have gained global concern due to their widespread presence and potential toxic effects. However, the microbial degradation behaviors of HFPO oligomers remain unknown. This study provided first evidence of microbial degradation of an important HFPO oligomer, HFPO-dimer acid (HFPO-DA), in aerobic soils affected by sewage of fluorochemical plant. Our findings disclosed that 51.6 ± 3.0% of initial HFPO-DA was degraded by indigenous microbes during the 150 days. A total of 3 degradation products were screened via nontarget analysis due to multiple degradation pathways, including defluorination, hydroxyl oxidation, hydrolysis and C-C bond cleavage. 2-trifluoromethyl-2-(difluoromethoxy) acetic acid was first found as the transformation product of HFPO-DA. Additionally, 19 potential functional genes associated with transmembrane transport, xenobiotic biodegradation and energy metabolism played important roles in HFPO-DA degradation. Genus <em>Gordonia, Megasphaera,</em> and <em>Streptomyces</em>, as hosts of potential functional genes, were found as the potential keystone taxa in HFPO-DA degradation. The findings of this study break the traditional cognition that HFPO-DA was recalcitrant to microbial degradation, and have important implications toward bioremediation of contaminated sites and implementation of the Action Plan on Controlling New Pollutants in China.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"17 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145059645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
引用次数: 0
Radical and non-radical pathways of organic arsenic removal in the heterogeneous peroxymonosulfate (PMS) activation system: A DFT study 非均相过氧单硫酸盐(PMS)活化体系中有机砷的自由基和非自由基去除途径:DFT研究
IF 11.1 1区 环境科学与生态学
Journal of Cleaner Production Pub Date : 2025-09-15 DOI: 10.1016/j.jclepro.2025.146611
Qingyuan Gu, Mingxue Li, Yanru Huo, Yuxin Zhou, Yuhui Ma, Nuan Wen, Maoxia He
{"title":"Radical and non-radical pathways of organic arsenic removal in the heterogeneous peroxymonosulfate (PMS) activation system: A DFT study","authors":"Qingyuan Gu, Mingxue Li, Yanru Huo, Yuxin Zhou, Yuhui Ma, Nuan Wen, Maoxia He","doi":"10.1016/j.jclepro.2025.146611","DOIUrl":"https://doi.org/10.1016/j.jclepro.2025.146611","url":null,"abstract":"Organic arsenic is an emerging contaminant of both organic and inorganic nature. Through theoretical calculations, we explore the radical (<ce:sup loc=\"post\">•</ce:sup>OH and SO<ce:inf loc=\"post\">4</ce:inf><ce:sup loc=\"post\">•−</ce:sup>) and non-radical (<ce:sup loc=\"post\">1</ce:sup>O<ce:inf loc=\"post\">2</ce:inf>) pathways of organic arsenic removal in the heterogeneous peroxymonosulfate (PMS) activation system with a single-atom iron catalyst (FeN<ce:inf loc=\"post\">4</ce:inf>) as the catalyst model. In this study, quantum chemical calculations showed that three reactive iron species (ROSs) oxidize <ce:italic>p</ce:italic>-arsanilic acid (PASA) to generate inorganic arsenic (As(Ⅲ) and As(Ⅴ)) in large ratios, and their reaction rate constants are in the order of <ce:sup loc=\"post\">•</ce:sup>OH (1.42 × 10<ce:sup loc=\"post\">10</ce:sup> M<ce:sup loc=\"post\">−1</ce:sup> s<ce:sup loc=\"post\">−1</ce:sup>) &gt; SO<ce:inf loc=\"post\">4</ce:inf><ce:sup loc=\"post\">•−</ce:sup> (5.49 × 10<ce:sup loc=\"post\">9</ce:sup> M<ce:sup loc=\"post\">−1</ce:sup> s<ce:sup loc=\"post\">−1</ce:sup>) &gt; <ce:sup loc=\"post\">1</ce:sup>O<ce:inf loc=\"post\">2</ce:inf> (1.99 × 10<ce:sup loc=\"post\">8</ce:sup> M<ce:sup loc=\"post\">−1</ce:sup> s<ce:sup loc=\"post\">−1</ce:sup>). The activation mechanism of PMS by a periodic FeN<ce:inf loc=\"post\">4</ce:inf> catalyst was thoroughly investigated, and generation mechanisms of three reactive oxygen species as well as reactive iron species (RFeSs, i.e., surface-bound PMS and SO<ce:inf loc=\"post\">4</ce:inf><ce:sup loc=\"post\">•−</ce:sup>, and high-valent iron-oxo species) were demonstrated. The roles of FeN<ce:inf loc=\"post\">4</ce:inf> and RFeSs in arsenic removal include: (ⅰ) promoting PMS activation to generate <ce:sup loc=\"post\">1</ce:sup>O<ce:inf loc=\"post\">2</ce:inf> to oxidize PASA indirectly; (ⅱ) lowering the reductive potential energy of PASA via adsorption; (ⅲ) removing released inorganic arsenic directly by physical adsorption. The molar adsorption energy of organic and inorganic arsenic on the FeN<ce:inf loc=\"post\">4</ce:inf> site is pH-dependence with the order of As(Ⅴ) &lt; PASA &lt; As(Ⅲ). This study illustrates the degradation of organic arsenic more efficiently by radical (<ce:sup loc=\"post\">•</ce:sup>OH and SO<ce:inf loc=\"post\">4</ce:inf><ce:sup loc=\"post\">•−</ce:sup>) oxidation than by non-radical (<ce:sup loc=\"post\">1</ce:sup>O<ce:inf loc=\"post\">2</ce:inf>) oxidation, and the non-radical pathway provided by RFeSs for organic arsenic removal is adsorption.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"35 1","pages":""},"PeriodicalIF":11.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145059803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
引用次数: 0
Global patterns of pesticide residues in seaweeds: A systematic review 海藻中农药残留的全球格局:系统综述
IF 5.8 3区 环境科学与生态学
Marine pollution bulletin Pub Date : 2025-09-15 DOI: 10.1016/j.marpolbul.2025.118708
Gadiel Zilto Azevedo, Felipe de Souza Dutra, Aline Nunes, Giuseppina Pace Pereira Lima, Marcelo Maraschin
{"title":"Global patterns of pesticide residues in seaweeds: A systematic review","authors":"Gadiel Zilto Azevedo, Felipe de Souza Dutra, Aline Nunes, Giuseppina Pace Pereira Lima, Marcelo Maraschin","doi":"10.1016/j.marpolbul.2025.118708","DOIUrl":"https://doi.org/10.1016/j.marpolbul.2025.118708","url":null,"abstract":"Seaweeds, crucial for coastal ecosystems and of growing socioeconomic importance, have been threatened by pesticide contamination in their environments. This systematic review identifies, critically evaluates, and synthesizes recent global literature (2015–2024) on pesticide residues detected in seaweeds to delineate contamination patterns. Following PRISMA guidelines, studies were selected from the CAPES Journal Portal database, focusing on in situ seaweed samples with reported pesticide contamination. Of the 85 studies identified in the search, 12 met the inclusion criteria, addressing multiple seaweed groups. This resulted in 20 descriptions, primarily focusing on Chlorophyta (40 %), Rhodophyta (35 %), and Phaeophyceae (25 %). Organochlorine pesticides (OCPs), such as HCH (12 %), aldrin, DDT, and endosulfan (each at 11 %), were frequently detected, indicating a legacy of persistent contamination. Pesticide concentrations varied significantly by geographical location, with a notable number of studies originating from India (58 %). Variations were also observed by seaweed species and pesticide types, with QuEChERS extraction (58 %) and GC–MS (83 %) being the commonly used analytical methods. This review highlights the widespread presence of pesticides in marine algae, emphasizing the need for standardized analytical protocols, broader geographic and taxonomic research, and studies linking residues of those xenobiotics to their ecological impacts for robust risk assessment and mitigation.","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"1 1","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145059805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
引用次数: 0
Hidden decay of live trees in a tropical rain forest 热带雨林中活树的隐藏腐烂
IF 4.3 2区 环境科学与生态学
Ecology Pub Date : 2025-09-14 DOI: 10.1002/ecy.70208
Gregory S. Gilbert, Brant C. Faircloth, Travis C. Glenn, Javier O. Ballesteros, César A. Barrios-Rodríguez, Ernesto Bonadies, Marjorie L. Cedeño-Sánchez, Nohely J. Fossatti-Caballero, José Moisés Pérez-Suñiga, Mariam M. Trejos-Rodríguez, Stephen P. Hubbell
{"title":"Hidden decay of live trees in a tropical rain forest","authors":"Gregory S. Gilbert,&nbsp;Brant C. Faircloth,&nbsp;Travis C. Glenn,&nbsp;Javier O. Ballesteros,&nbsp;César A. Barrios-Rodríguez,&nbsp;Ernesto Bonadies,&nbsp;Marjorie L. Cedeño-Sánchez,&nbsp;Nohely J. Fossatti-Caballero,&nbsp;José Moisés Pérez-Suñiga,&nbsp;Mariam M. Trejos-Rodríguez,&nbsp;Stephen P. Hubbell","doi":"10.1002/ecy.70208","DOIUrl":"https://doi.org/10.1002/ecy.70208","url":null,"abstract":"<p>The trunks of forest trees store massive amounts of carbon, but fungi actively and invisibly decay wood inside even seemingly healthy trees. Wood-decay fungi are responsible for the loss of stored carbon in living trees, and they make trees susceptible to snapping and uprooting in storms. We used sonic tomography to measure the prevalence and severity of decay in 1744 live trees (≥20 cm diameter) of 171 species on the 50-ha Forest Dynamics Plot on Barro Colorado Island, Panama. A median of &lt;2% of the cross-sectional trunk area showed decay, but 15% of trees had &gt;20% decay. Twenty percent of the combined basal area showed decay, representing a loss of approximately 1% of aboveground biomass. Larger trees more often showed internal decay, with one quarter of trees showing decay before reaching canopy height. Decay severity varied by species; 23% of species showed &lt;2% decay while 9% of species lost over half their basal area. Rare species were more affected than locally abundant species, and species with traits associated with a fast life history were more susceptible to decay. These results suggest that hidden wood decay affects a large proportion of living tropical forest trees.</p>","PeriodicalId":11484,"journal":{"name":"Ecology","volume":"106 9","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://esajournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ecy.70208","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exploring sustainable fertility of live microalgal cells: Impacts on lettuce growth and soil microbial metabolic responses 探索活微藻细胞的可持续肥力:对生菜生长和土壤微生物代谢反应的影响
IF 8.4 2区 环境科学与生态学
Journal of Environmental Management Pub Date : 2025-09-14 DOI: 10.1016/j.jenvman.2025.127235
Fuzhou Zhang , Aili Yang , Yicheng Wu , Wenjie Li , Jiaona Guo , Fanxing He , Mujie Wang , Peng Zhang , Jianbing Li
{"title":"Exploring sustainable fertility of live microalgal cells: Impacts on lettuce growth and soil microbial metabolic responses","authors":"Fuzhou Zhang ,&nbsp;Aili Yang ,&nbsp;Yicheng Wu ,&nbsp;Wenjie Li ,&nbsp;Jiaona Guo ,&nbsp;Fanxing He ,&nbsp;Mujie Wang ,&nbsp;Peng Zhang ,&nbsp;Jianbing Li","doi":"10.1016/j.jenvman.2025.127235","DOIUrl":"10.1016/j.jenvman.2025.127235","url":null,"abstract":"<div><div>The excessive dependency on chemical fertilizers presents significant challenges to agricultural sustainability, thereby necessitating the development of eco-friendly alternatives that can enhance nutrient efficiency. This study investigates live <em>Chlorella</em> sp. cells (OX) as biofertilizers in lettuce cultivation, comparing their effects with freeze-thaw disrupted algal biomass (OO), bead-milled disrupted algal biomass (OZ), and a water-only control (CK). OX significantly enhanced lettuce growth—stem length (+32.6 %), leaf count (+33.3 %), chlorophyll (+233.3 %), and protein content (+47.5 %)—by continuously releasing nitrogen-rich metabolites, phytohormones, and extracellular polymers. OX also improved soil health: total nitrogen (+53.2 %), ammonium-N (+85.2 %), catalase activity (+76.6 %), and available phosphorus (+11.1 %) increased, while pH decreased due to organic acids. Metagenomic analysis revealed OX enriched nutrient-cycling bacteria (e.g., <em>Pseudomonadota</em>, <em>Bacteroidota</em>, and phosphate-solubilizing <em>Massilia</em>) and upregulated genes that store nitrogen (<em>NapAB</em>) and reduce greenhouse gases (<em>NosZ</em>). Crucially, live cells sustained balanced root-microbe interactions via photosynthesis, whereas disrupted biomass (OO/OZ) caused transient nutrient pulses. These findings demonstrate that live microalgae reconcile crop productivity, soil health, and environmental sustainability, reducing dependence on chemical inputs while restoring degraded soils, offering a low-carbon alternative to synthetic fertilizers.</div></div>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"394 ","pages":"Article 127235"},"PeriodicalIF":8.4,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057321","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}
引用次数: 0
A versatile model of nutrient retention in relation to ecosystem state in shallow lakes: GPLake-R 浅湖生态系统状态与养分保持的通用模型:gplak - r
IF 12.8 1区 环境科学与生态学
Water Research Pub Date : 2025-09-14 DOI: 10.1016/j.watres.2025.124614
{"title":"A versatile model of nutrient retention in relation to ecosystem state in shallow lakes: GPLake-R","authors":"","doi":"10.1016/j.watres.2025.124614","DOIUrl":"https://doi.org/10.1016/j.watres.2025.124614","url":null,"abstract":"Nutrient pollution of surface waters contributes to eutrophication problems and constitutes a loss of valuable resources for human food production. Nu…","PeriodicalId":443,"journal":{"name":"Water Research","volume":"41 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145056843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
引用次数: 0
Single and mixture toxicity effects of legacy and emerging per- and polyfluoroalkyl substances on submerged plants and epiphytic biofilms 遗留和新出现的全氟烷基和多氟烷基物质对水下植物和附生生物膜的单一和混合毒性影响
IF 13.6 1区 环境科学与生态学
Journal of Hazardous Materials Pub Date : 2025-09-14 DOI: 10.1016/j.jhazmat.2025.139862
Yakun Feng, Cuiling Jiang, Wei Zhang, Lin Gong, Lei Sun
{"title":"Single and mixture toxicity effects of legacy and emerging per- and polyfluoroalkyl substances on submerged plants and epiphytic biofilms","authors":"Yakun Feng, Cuiling Jiang, Wei Zhang, Lin Gong, Lei Sun","doi":"10.1016/j.jhazmat.2025.139862","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.139862","url":null,"abstract":"Although per- and polyfluoroalkyl substances (PFASs), often referred to as “forever chemicals,” pose persistent threats to aquatic ecosystems, the effects of multiple PFAS types on submerged macrophyte–biofilm symbiotic systems remain poorly understood. In this study, we systematically investigated the impacts of single and combined exposures to both legacy and emerging PFAS on submerged macrophytes, biofilms, and associated microbial risks. Our results show that the growth of <em>Vallisneria natans</em> was inhibited under both single and mixed PFAS stress. Photosynthetic performance and nutrient uptake in <em>V. natans</em> were variably affected depending on the PFAS type. Emerging PFAS were more likely to induce oxidative stress, with malondialdehyde content increasing by 36.7% under hexafluoropropylene oxide dimer acid exposure. Notably, PFAS stress significantly altered biofilm morphology and microbial community composition, including enrichment of several human bacterial pathogens. Additionally, PFAS exposure promoted the enrichment of antibiotic resistance genes (ARGs), and the increased abundance of mobile genetic elements suggested a higher potential for horizontal gene transfer. Co-occurrence network analysis further revealed that potential ARG hosts were affected under PFAS stress.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"35 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145056871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
引用次数: 0
Naming It Is Not Enough: An Orienting Map for Understanding Conservation's Entanglement With Power 命名是不够的:一幅理解保护与权力纠缠的定向图
IF 7.7 1区 环境科学与生态学
Conservation Letters Pub Date : 2025-09-14 DOI: 10.1111/conl.13146
Katie Moon
{"title":"Naming It Is Not Enough: An Orienting Map for Understanding Conservation's Entanglement With Power","authors":"Katie Moon","doi":"10.1111/conl.13146","DOIUrl":"https://doi.org/10.1111/conl.13146","url":null,"abstract":"<p>Power is frequently acknowledged in conservation as a limiting factor, something to be cited, problematized, or managed, less frequently is it engaged with as a lived, situated, and multidimensional force. This primer responds to a recurring issue in conservation: The tendency to name power without examining how we, as re-searchers, policy-makers, and practitioners, are entangled in its production and reproduction. Conservation is not neutral; it is interventionist. As such, it demands rigorous reflection on how our assumptions about the world, about who or what can act, change, or matter, shape the problems we see and the solutions we pursue. This paper introduces a reflexive framework that combines three onto-epistemological frames (objectivist, constructivist, and relational) with six dimensions of power (material, structural, discursive, symbolic, networked, and relational), each linked to differing assumptions of agency. It is intentionally reductive, reflecting how conservation often treats power as separable and locatable, enabling interventions to be rationalized and evaluated. A cross-cutting matrix enables users to trace how their own position shapes what they see, do, and make possible in conservation contexts; without such conscious engagement, even well-intended actions risk entrenching the inequalities and dynamics they aim to undo.</p>","PeriodicalId":157,"journal":{"name":"Conservation Letters","volume":"18 5","pages":""},"PeriodicalIF":7.7,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://conbio.onlinelibrary.wiley.com/doi/epdf/10.1111/conl.13146","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145051245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Periphytic biofilms trade modest nitrogen retention for increasing nitrous oxide emissions from rice paddies in warm regions 在温暖地区,周围植物生物膜以适度的氮保留来增加稻田的氧化亚氮排放
IF 1 1区 环境科学与生态学
Journal of Cleaner Production Pub Date : 2025-09-14 DOI: 10.1016/j.jclepro.2025.146649
Sichu Wang , Long Wang , Qian Yue , Jiao Zong , Jing Sheng
{"title":"Periphytic biofilms trade modest nitrogen retention for increasing nitrous oxide emissions from rice paddies in warm regions","authors":"Sichu Wang ,&nbsp;Long Wang ,&nbsp;Qian Yue ,&nbsp;Jiao Zong ,&nbsp;Jing Sheng","doi":"10.1016/j.jclepro.2025.146649","DOIUrl":"10.1016/j.jclepro.2025.146649","url":null,"abstract":"<div><div>Nitrous oxide (N<sub>2</sub>O) is one of the most important greenhouse gases emitted from rice paddies, with a global warming potential 298 times greater than that of carbon dioxide. Periphytic biofilms (PBs) participate in nitrogen cycling and influence redox conditions at the soil-water interface in rice paddies. However, the contribution of PBs to N<sub>2</sub>O emissions has not been adequately assessed. In this study, we conducted field experiments in rice fields across three climatic zones to investigate the role of PBs in N<sub>2</sub>O emissions and the mechanisms contributing to N<sub>2</sub>O emissions. The results indicate that the growth of PBs reduced ammonium nitrogen concentrations in both the overlying water and the surface soil during the early phase of the rice growing season, whereas the decay of PBs released nitrogen-containing organic matter during the later phase. The degradation of this organic matter supplied additional inorganic nitrogen and contributed to a decrease in redox potential in the surface soil, stimulating the nitrite-reducing bacteria (<em>nirK</em> and <em>nirS</em> type denitrifying communities) but restraining the N<sub>2</sub>O<em>-</em>reducing bacteria (<em>nosZ</em> type denitrifying communities). Although PBs mitigated N<sub>2</sub>O emissions during the tillering stage, they aggravated N<sub>2</sub>O emissions during the ripening stage. More nutrient-rich soil and higher temperature contributed to a higher intensity of N<sub>2</sub>O emissions induced by PBs. Over a rice-growing season, net N<sub>2</sub>O emissions increased by 58 and 46 g N<sub>2</sub>O ha<sup>−1</sup> in tropical and subtropical rice fields, respectively, while remaining minimal in temperate rice fields.</div></div>","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"525 ","pages":"Article 146649"},"PeriodicalIF":10.0,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145056855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
引用次数: 0
Spatiotemporal Heterogeneity of Drivers and Impacts of Composite Air Pollution at China's Urban Scale: A Multi-Source Data and Integrated Approach Analysis for 2015–2023 中国城市尺度复合空气污染驱动因素及影响的时空异质性:2015-2023年多源数据与综合方法分析
IF 13.6 1区 环境科学与生态学
Journal of Hazardous Materials Pub Date : 2025-09-14 DOI: 10.1016/j.jhazmat.2025.139855
Xiaoqi Wang, Yiqing Kang, Wei Wei, Wenjiao Duan, Wenrui Sha, Hongzhen Zhang, Shuiyuan Cheng
{"title":"Spatiotemporal Heterogeneity of Drivers and Impacts of Composite Air Pollution at China's Urban Scale: A Multi-Source Data and Integrated Approach Analysis for 2015–2023","authors":"Xiaoqi Wang, Yiqing Kang, Wei Wei, Wenjiao Duan, Wenrui Sha, Hongzhen Zhang, Shuiyuan Cheng","doi":"10.1016/j.jhazmat.2025.139855","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.139855","url":null,"abstract":"Atmospheric pollutants impose significant deleterious effects on human health. China's carbon neutrality objectives necessitate implementing rigorous pollution governance measures. However, synergistic interactions among multiple factors engender pronounced spatiotemporal heterogeneity in air pollution. This study consequently investigates driving forces, attribution, and trends of nationwide urban composite pollution using multi-source datasets and technologies. Results demonstrate that key driving factors exhibit temporal disparities at both inter-annual and seasonal scales in terms of factor weights, response curves, and impact interval values of factors. Influences of typical pollution drivers and meteorological determinants on composite pollution exhibit distinct east-west disparities bounded by Hu Line. Driving factors of spatial disparities indicate that pollution factors constitute primary contributor, with impacts exhibiting upward inter-annual trends. The influences of geographical conditions and socio-economic factors are also non-negligible. Further analysis employing ratios of gross regional product (GRP) per unit of energy consumption to pollutant emissions and per GRP to pollutant emissions reveal that only five regions achieved median levels of national major pollutant emissions. Significant disparities in development trajectories among regions necessitate tailored strategies for atmospheric pollution control based on local pollution mechanisms, integrated with regional socio-economic development plans, to achieve scientific co-control of air pollutants and greenhouse gases.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"67 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145056869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
引用次数: 0
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