环境科学与生态学最新文献

{"title":"A New Twist on an Old Story: Pollination and Seed Predation in <i>Jadera haematoloma</i>.","authors":"Mattheau S Comerford, Scott P Carroll, Scott P Egan","doi":"10.1086/736460","DOIUrl":"10.1086/736460","url":null,"abstract":"<p><p>AbstractPollinating seed predators are partners in a specialized plant-insect mutualism where insects pollinate the flower ovules of the seeds that they later consume. Such relationships have proven rare but provide a unique perspective on the mechanisms that drive (co)evolution. We combine natural history and community science observations to identify the red-shouldered bug (<i>Jadera haematoloma</i>) as the first member of the insect order Hemiptera to be classified in this guild. We use laboratory- and field-based experiments to demonstrate that <i>J. haematoloma</i> are consuming nectar and providing a pollination service for their host plants. However, the pollination benefit to the host is later reduced by seed predation from the pollinator's offspring. Furthermore, this study expands our perspective on the diet breadth of <i>J. haematoloma</i>, which is a model system for rapid ecological adaptation of feeding morphology that was historically attributed solely to selective pressures associated with accessing the seeds inside the fruit of their host plant.</p>","PeriodicalId":50800,"journal":{"name":"American Naturalist","volume":"206 2","pages":"179-191"},"PeriodicalIF":2.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144735098","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 associations between landscape elements and soundscape perception: A meta-analysis","authors":"Ruining Zhang ,&nbsp;Hui Ma ,&nbsp;Chao Wang ,&nbsp;Yuan Zhang ,&nbsp;Jian Kang","doi":"10.1016/j.landurbplan.2025.105463","DOIUrl":"10.1016/j.landurbplan.2025.105463","url":null,"abstract":"<div><div>This study conducts a <em>meta</em>-analysis to quantify the robust associations between landscape elements and the two main dimensions of soundscape perception—pleasantness and eventfulness—and to explain the sources of heterogeneity in these relationships. Following PRISMA guidelines, a systematic search of the Web of Science and Scopus databases yielded 14 papers providing 69 independent samples for analysis. The results showed that natural elements and the crowd were generally associated with higher pleasantness, with the strongest positive correlations found for vegetation (Summary r, <em>Sr</em> = 0.59) and the crowd (<em>Sr</em> = 0.56). Anthropogenic elements exhibited a design-dependent duality: those with positive cultural and artistic attributes were positively associated with pleasantness (<em>Sr</em> = 0.42), while functional and traffic-related elements were negatively associated (<em>Sr</em> = -0.64). For eventfulness, the crowd was the strongest positive correlate (<em>Sr</em> = 0.61), followed by positive anthropogenic elements (<em>Sr</em> = 0.52) and the sky (<em>Sr</em> = 0.37). Conversely, functional anthropogenic elements were negatively associated with eventfulness (<em>Sr</em> = -0.53), while water bodies showed no significant overall association. High heterogeneity in many associations was explained through sensitivity and subgroup analyses, revealing that site function (e.g., park vs. commercial area) and element characteristics are key moderating factors. This study moves beyond qualitative descriptions to provide a quantitative, evidence-based foundation for soundscape design, offering actionable insights for creating healthier and more pleasant urban acoustic environments through context-aware landscape interventions.</div></div>","PeriodicalId":54744,"journal":{"name":"Landscape and Urban Planning","volume":"263 ","pages":"Article 105463"},"PeriodicalIF":9.2,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144749449","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}

{"title":"Polyhydroxybutyrate (PHB) production and methane uptake by methanotrophic bacteria in a membrane-based reactor","authors":"Banu Taskan ,&nbsp;Ergin Taskan ,&nbsp;YenJung Sean Lai ,&nbsp;Everett Eustance ,&nbsp;Maheen Mahmood ,&nbsp;Yi-hao Luo ,&nbsp;Bruce E. Rittmann","doi":"10.1016/j.chemosphere.2025.144590","DOIUrl":"10.1016/j.chemosphere.2025.144590","url":null,"abstract":"<div><div>Methanotrophic bacteria use methane (CH₄) as an electron donor and carbon source for growth and to produce a variety of valuable byproducts, including polyhydroxybutyrate (PHB), a feedstock for bioplastics. This study evaluated the effects of three independent parameters (nitrogen source, dissolved oxygen (DO) concentration, and CH₄ availability) on biomass and PHB yield. The work employed a membrane-based approach to deliver CH₄ and O₂ gases independently for methanotrophic growth, a process referred to as Membrane Oxygenation and Methanotrophy (MOM). Performance metrics included bacterial yield, CH₄ consumption rate, PHB content, and microbial community composition. Ammonium (NH₄⁺) as an N-source with low DO concentration led to the highest biomass yield (up to 0.59 g produced biomass/g CH₄) and PHB content (up to of 36% of dry weight). The MOM improved CH₄ utilization efficiency up to 95.8% without gas circulation. Limiting CH₄ availability during N-depletion promoted the PHB content of the methanotrophic bacteria. However, excess CH₄ in the headspace (&gt;70% CH₄ not being utilized) for the limited DO condition inhibited biomass growth and PHB production. Shallow metagenomic analysis showed that the bacterial species in the MOM reactors mainly belonged to the genera <em>Methylocytis</em> (up to 87% relative abundance) and <em>Hyphomicrobium</em> (up to 70% relative abundance). <em>Methylocystis,</em> a Type II methanotroph known to produce PHB, became dominant during the conditions that led to the highest PHB content. The findings demonstrate the MOM operated with lower CH₄ gas pressure and limited DO promoted CH₄ utilization and conversion toward PHB production.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"385 ","pages":"Article 144590"},"PeriodicalIF":8.1,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750564","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":"Effect of haloacetic acid water disinfection by-products on intestinal barrier function in nematode Caenorhabditis elegans.","authors":"Jun-Ling Liu, Xiao-Pan Zhang, Chen-Wei Peng, Hai-Yuan Luo, Ai-Lin Liu","doi":"10.1093/etojnl/vgaf129","DOIUrl":"10.1093/etojnl/vgaf129","url":null,"abstract":"<p><p>Halogenated disinfection by-products are contaminants in drinking water that pose a significant public health concern. The intestine is particularly susceptible to the effects of disinfection by-products through oral ingestion; however, the intestinal toxicity of these compounds remains largely unexplored. This study aimed to assess the impact of 10 haloacetic acids, a major class of drinking water disinfection by-products, on intestinal barrier function using Caenorhabditis elegans as a model animal. Additionally, changes in the expression of five genes related to intestinal barrier function (mucin-like gene [mul-1], zonula occludens ortholog gene [zoo-1], gut esterase 1 gene [ges-1], cytochrome P450 gene [cyp13a7], and saposin-like protein family gene [spp-5]) were examined using quantitative real-time polymerase chain reaction. Among the investigated haloacetic acids (chloroacetic acid, bromoacetic acid, iodoacetic acid, dibromoacetic acid, dichloroacetic acid, bromochloroacetic acid, bromodichloroacetic acid, dibromochloroacetic acid, trichloroacetic acid, and tribromoacetic acid), exposure to five haloacetic acids (dichloroacetic acid, bromodichloroacetic acid, dibromochloroacetic acid, trichloroacetic acid, and tribromoacetic acid) could lead to significant disruption of the intestinal barrier, as evidenced by the induced increase in intestinal permeability in C. elegans. The order of enterotoxicity, based on assessments of intestinal permeability, is trichloroacetic acid > bromodichloroacetic acid ≈ dibromochloroacetic acid ≈ tribromoacetic acid > dichloroacetic acid. These five compounds suppressed the expression of both the tight junction (zoo-1) and xenobiotic-metabolizing (ges-1) genes, suggesting that these two genes may be of vital importance in haloacetic acid-induced intestinal toxicity. This work contributes to improving the available knowledge on the toxicity of haloacetic acids and provides a basis for understanding their mechanism of intestinal toxicity.</p>","PeriodicalId":11793,"journal":{"name":"Environmental Toxicology and Chemistry","volume":" ","pages":"2233-2243"},"PeriodicalIF":2.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144076701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Effects of inorganic mercury (HgCl2) on electrical excitability of rainbow trout (Oncorhynchus mykiss) heart.","authors":"Ahmed Badr, Jaakko Haverinen, Matti Vornanen","doi":"10.1093/etojnl/vgaf128","DOIUrl":"10.1093/etojnl/vgaf128","url":null,"abstract":"<p><p>Mercury (Hg) is a major environmental pollutant that is toxic to fish. One of its targets is the heart, but its mode of action on the electrical excitability of fish heart is poorly known. To address this, we investigated the acute effects of inorganic mercury (Hg2+) on the heart of rainbow trout (Oncorhynchus mykiss) at three levels of biological organization: (a) electrocardiogram of perfused whole hearts ex vivo (the whole heart level), (b) action potentials (APs; the cellular level), and (c) ion channel currents of isolated ventricular myocytes (molecular level). Whole hearts and myocytes were exposed to 0.1-10 µM HgCl2. In ventricular myocytes, Hg2+ inhibited L-type Ca2+ (ICaL) and fast Na+ current (INa), the two major inward (depolarizing) currents of fish hearts, in a concentration-dependent manner. The INa and ICaL were inhibited with half-maximal effect (IC50 value) at 0.2 ± 0.04 and 0.7 ± 0.08 µM, respectively. Of the two major outward (repolarizing) K+ currents, IKr was inhibited in a concentration-dependent manner with an IC50 value of 1.0 ± 0.1 µM, while IK1 current was totally resistant to Hg2+. The inhibition of sarcolemmal ion currents caused prominent changes in the shape of ventricular AP. Action potential duration at 50% and 90% (APD50, APD90) level of repolarization was prolonged, while the early plateau (APD10) was markedly shortened. The long plateau phase was accompanied by early and delayed afterdepolarizations, leading to triggered APs. At the level of perfused whole hearts, the molecular and cellular level changes appeared as arrhythmias that were characterized by bradycardia, atrioventricular block, prolongation the duration of ventricular AP and triggered activity. Cardiotoxicity of Hg2+ can weaken cardiac function in fish. This effect may be exacerbated when combined with high temperature stress, as both factors have a similar mode of action.</p>","PeriodicalId":11793,"journal":{"name":"Environmental Toxicology and Chemistry","volume":" ","pages":"2206-2220"},"PeriodicalIF":2.8,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144109858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Group‐consistent but species‐specific nitrogen isotope fractionation between leaves and roots in tropical vascular epiphytes","authors":"Chun‐Yan Zhou, Tao Jia, Tian‐Hao Su, Yun‐Hong Tan, Qiang Liu, Tao Wang, Yu‐Xuan Mo, Hai‐Xia Hu, Xiao‐Yan Pu, Xiao‐Fan Na, Su Li","doi":"10.1111/1365-2745.70131","DOIUrl":"https://doi.org/10.1111/1365-2745.70131","url":null,"abstract":"<jats:list> <jats:list-item>Epiphytes are believed to exhibit minimal internal nitrogen (N) isotopic composition (δ<jats:sup>15</jats:sup>N) variation due to severe N limitation in canopy habitats. However, the lack of empirical evidence leaves this question open, complicating the interpretation of foliar δ<jats:sup>15</jats:sup>N in understanding the N economy of epiphytes.</jats:list-item> <jats:list-item>Here, the variation in δ<jats:sup>15</jats:sup>N between leaves and roots (∆<jats:sup>15</jats:sup>N<jats:sub>leaf–root</jats:sub>) of 24 epiphyte species from the tropical Xishuangbanna region of southwest China was calculated. Subsequent linear regression and variance decomposition were performed to identify the underlying driving factors.</jats:list-item> <jats:list-item>A small ∆<jats:sup>15</jats:sup>N<jats:sub>leaf−root</jats:sub> (+0.43‰) was observed in epiphytes, which exhibited relatively consistent values across groups (−0.20‰ to 1.78‰) but markedly species‐specific values (−2.13‰ to 2.15‰), independently of phylogeny, reflecting the combined effects of external N sources and N acquisition strategies of epiphytes. In particular, positive ∆<jats:sup>15</jats:sup>N<jats:sub>leaf−root</jats:sub> values were primarily correlated with leaf N and root carbon (C), while negative ∆<jats:sup>15</jats:sup>N<jats:sub>leaf−root</jats:sub> values were associated with leaf C isotopic composition (δ<jats:sup>13</jats:sup>C), indicating that distinct <jats:sup>15</jats:sup>N fractionation progresses were at work.</jats:list-item> <jats:list-item><jats:italic>Synthesis</jats:italic>. These results demonstrate for the first time that ∆<jats:sup>15</jats:sup>N<jats:sub>leaf−root</jats:sub> is minimal yet noteworthy within epiphytes compared with soil‐rooted plants, reflecting the more severe N stress in the canopy habitats, and suggest that foliar δ<jats:sup>15</jats:sup>N—when accounting for <jats:sup>15</jats:sup>N fractionation—can provide valuable insights into the N dynamics of tropical epiphytes.</jats:list-item> </jats:list>","PeriodicalId":191,"journal":{"name":"Journal of Ecology","volume":"27 1","pages":""},"PeriodicalIF":5.5,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144755925","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}

{"title":"Analysis of the influence of climate change on wetland evolution and its driving process from an integrated perspective of landscape connectivity and fragmentation.","authors":"Can Li, Weiqun Lei, Yu Huang, Wenmin Hu","doi":"10.1016/j.jenvman.2025.126155","DOIUrl":"10.1016/j.jenvman.2025.126155","url":null,"abstract":"<p><p>The evolution of wetland ecosystems from the perspectives of landscape connectivity and fragmentation is a critical interdisciplinary topic in contemporary wetland science and landscape ecology. In the context of global warming, the mechanisms by which wetland patches respond to climate change through changes in landscape connectivity and fragmentation require further elucidation. This study introduces an SEMD-XGboost-SHAP ecological modeling framework that systematically examines the evolution of wetland landscape patches and their responses under multiple climate scenarios. The findings indicate: (1) From 2000 to 2022, Permanent water, Marsh, and Flooded flat were the primary drivers of wetland evolution in Dongting Lake. Rapid warming led to a significant reduction in wetlands area, whereas slow warming resulted in a notable increase. (2) At the patch scale, aggregation was the predominant form of wetland evolution, while dissection characterized degradation. Under rapid warming and cooling scenarios, patches underwent significant evolution with connectivity increasing by 9.2 % and 48.63 %, respectively. Conversely, under slow warming and cooling scenarios, patches experienced significant degradation, with fragmentation increasing by 9.75 % and 40.62 %. (3) Annual average maximum temperature was a common factor influencing land type conversion across climate scenarios. In terms of patch evolution, annual average temperature, annual average maximum temperature, minimum temperature, and annual average evapotranspiration were key drivers. Moreover, the interaction between temperature and precipitation played a crucial role in maintaining the stability of wetland patterns. This study provides a foundation for understanding the critical responses of wetland patterns to climate change and offers insights into nature-based solutions for wetland conservation.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"389 ","pages":"126155"},"PeriodicalIF":8.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144293125","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":"Brazil on fire: Igniting awareness of the 2024 wildfire crisis.","authors":"Rodrigo Béllo Carvalho, Imma Oliveras Menor, Isabel Belloni Schmidt, Christian Niel Berlinck, Luísa Genes, Rodolfo Dirzo","doi":"10.1016/j.jenvman.2025.126190","DOIUrl":"10.1016/j.jenvman.2025.126190","url":null,"abstract":"<p><p>In 2024, South America faced an unprecedented wildfire crisis, with Brazil among the hardest-hit countries. Home to globally significant biomes like the Amazon, Pantanal, Cerrado, and Atlantic Forest, Brazil's ecosystems are undergoing massive destruction. Despite the severity of the 2024 wildfires-surpassing even the internationally scrutinized 2020 wildfires-the current disaster remains underreported internationally. Here, we seek to raise global awareness and advocate for immediate, collaborative action to mitigate Brazil's escalating wildfire emergency. We examined the scope, ecological impact, and socioeconomic consequences of the 2024 fires in Brazil, highlighting record-breaking areas burned and widespread wildfire foci. These wildfires are devastating biodiversity, endangering public health, and intensifying environmental injustices across the country. Our analysis reveals a significant relationship between deforestation and wildfire incidence the following year. Smoke pollution reached hazardous levels, impacting urban populations and disproportionately affecting Indigenous communities. Key drivers of this crisis include unsustainable land-use practices, extreme climate conditions, and governance failures, with response efforts hindered by underfunded environmental agencies. This situation underscores the urgent need for stronger enforcement of environmental policies, rapid allocation of emergency resources, and the implementation of Brazil's Integrated Fire Management (IFM) programs across federal, state, and private lands. We call for sustained international support, directly targeted at Brazilian agencies, to bolster fire prevention, response, and ecosystem resilience. Protecting Brazil's biomes is a global priority, requiring consistent advocacy and action that transcends political shifts.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"389 ","pages":"126190"},"PeriodicalIF":8.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144293126","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 PCR-based assessment of pathogens in wastewater and antibiotic resistance genes in drinking water of the Kathmandu Valley, Nepal.","authors":"Niva Sthapit, Ocean Thakali, Bikash Malla, Sunayana Raya, Jeevan B Sherchand, Eiji Haramoto","doi":"10.1016/j.jenvman.2025.126120","DOIUrl":"10.1016/j.jenvman.2025.126120","url":null,"abstract":"<p><p>Digital polymerase chain reaction (dPCR) is a significant advancement in health-related water microbiology, enabling absolute quantification without standard curves. By partitioning samples into thousands of individual reactions, dPCR allows for precise quantification even in the presence of inhibitory substances common in environmental samples. This study evaluated the applicability of dPCR to detect gastroenteritis-causing enteropathogens (Salmonella spp., Campylobacter coli, Campylobacter jejuni, Clostridium perfringens, JC and BK polyomaviruses, and human adenovirus), crAssphage, and four antibiotic resistance genes (ARGs) (sul1, bla_NDM-1, bla_CTX-M, and intI1) in wastewater and drinking water source samples. Wastewater samples were collected in 2018 from two municipal wastewater treatment plants (WWTPs) that used an oxidation ditch system (n = 12) and a stabilization pond system (n = 10) in the Kathmandu Valley, Nepal, whereas the drinking water source samples were collected from shallow wells between 2015 and 2016 (n = 22). The enteropathogens and ARGs were analyzed using the QIAcuity dPCR System. The highest detection ratio was observed by crAssphage in wastewater (100 %, 22/22) and by sul1 and intl1 in drinking water sources (91 %, 20/22). The log₁₀ reduction values evaluated in both WWTPs were <1 using dPCR, consistent with those obtained in previous quantitative PCR studies, and may be used to cross-validate between methods. However, this study also observed low detection ratios and concentrations of enteropathogens, likely due to factors such as low sample volumes, dead volume, thermal conditions, and the dPCR platform used. Thus, optimizing these variables is imperative to enhance the applicability of dPCR in environmental assessments.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"389 ","pages":"126120"},"PeriodicalIF":8.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144293130","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":"Litter percolate nitrogen promotes saprophytic and mycorrhizal fungi to contribute more soil carbon in mixed Masson pine plantations.","authors":"Yaoxiong Wang, Yunchao Zhou, Mei Fan, Fenghua Tang, Yuexiong Mao, Yang Peng, Mao Wen, Jian Feng, Haiyang Guan, Yunxing Bai","doi":"10.1016/j.jenvman.2025.126180","DOIUrl":"10.1016/j.jenvman.2025.126180","url":null,"abstract":"<p><p>The carbon contribution of soil fungi in mixed forests is considerably influenced by variations in litter nutrients, but the comprehension of this impact is fraught with discrepancies and ambiguities. Furthermore, litter percolate, a vital way in which litter nutrients impact soil, has gotten less attention. These considerably limit our understanding of fungi's roles in carbon storage in mixed forests. In this study, ingrowth cores were buried, and litter percolate collection buckets were placed in pure and mixed plantations. To determine how introducing tree species changed litter percolate and how litter percolate affected the carbon accumulation in various types of fungi, we measured and examined soil and litter percolate samples. The results showed that in the mixed Masson pine plantation mixed with Cercidiphyllum japonicum Sieb. et Zucc (PM + CJ), litter percolate nitrogen was 0.99 mg/L higher than in the pure Masson pine plantation (PM). In the mixed Masson pine plantation mixed with Manglietia chingii Dandy (PM + MC), litter percolate nitrogen was 1.78 mg/L higher than that in PM. Saprophytic and mycorrhizal fungi contributed substantially more soil organic carbon (SOC) in mixed plantations than in PM. In addition, both mycorrhizal and saprophytic fungi increased the soil carbon pool management index (CPMI) of mixed plantations. Litter percolate ammonium nitrogen contributed 40.76 % to the increase of SOC by mycorrhizal fungi, and together with litter percolate nitrogen contributed 40.13 % to the increase of SOC by saprophytic fungi. Mycorrhizal fungi's carbon contribution is influenced by both litter percolate and soil nitrogen content. It is recommended that the selection of mixed tree species that can increase nitrogen levels in litter percolate and soil be prioritized in order to enhance the accumulation and stability of SOC in Masson pine plantations.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":"389 ","pages":"126180"},"PeriodicalIF":8.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144293131","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}