环境科学与生态学最新文献

{"title":"Diurnal hourly near-surface ozone concentration derived from geostationary satellite in China.","authors":"Yi Zhang, Lin Zang, Jie Song, Jingru Yang, Ying Yang, Feiyue Mao","doi":"10.1016/j.scitotenv.2024.177186","DOIUrl":"10.1016/j.scitotenv.2024.177186","url":null,"abstract":"<p><p>Near-surface O₃ is a harmful atmospheric pollutant and a key component of urban photochemical pollution. The availability of satellite ozone concentration products is predominantly restricted to daytime, resulting in a lack of understanding of nighttime ozone pollution (e.g. nocturnal ozone enhancement events). This research leverages 5-km bright temperatures derived from Advanced Himawari Images (AHI) on the Himawari-8 satellite, in conjunction with auxiliary data, to estimate 24-h near-surface O₃ concentrations in China at a resolution of 5 km for 2020. The model achieves an average 5-fold cross-validation R² of 0.92. Comparative analysis with on-site observations reveals that the model has low relative errors between 8:00 and 21:00 LT. The estimated O₃ maps depict a consistent 24-h variation pattern, characterized by high and most fluctuating concentrations during the daytime, reaching a peak around 16:00 LT, which is primarily due to the increased photochemical reactions and the O₃ accumulation in the mid-afternoon. In the daytime of summer, high surface ozone concentrations are mainly contributed by June. The elevated levels of O₃ are predominantly found in central China, particularly in the Beijing-Tianjin-Hebei region and Inner Mongolia. It can also be seen that although the highest average daytime surface O₃ concentration occurs in summer, the highest nighttime concentration is observed in spring, which may be attributed to the frequent occurrence of horizontal transport and vertical mixing of O₃. This study holds promise in providing comprehensive round-the-clock surface O₃ data across China, thereby enhancing our understanding of diurnal ground-level O₃ variations.</p>","PeriodicalId":8,"journal":{"name":"ACS Biomaterials Science & Engineering","volume":" ","pages":"177186"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142492364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microplastic contamination in Chinese topsoil from 1980 to 2050.","authors":"Shuyou Zhang, Jianqiang Sun, Qing Zhou, Xudong Feng, Jie Yang, Kankan Zhao, Anping Zhang, Songhe Zhang, Yijun Yao","doi":"10.1016/j.scitotenv.2024.176918","DOIUrl":"10.1016/j.scitotenv.2024.176918","url":null,"abstract":"<p><p>China's soil is experiencing significant microplastic contamination. We developed a machine-learning model to assess microplastic pollution from 1980 to 2050. Our results showed that the average abundance of microplastics in topsoil increased from 45 items per kilogram of soil in 1980 to 1156 items by 2018, primarily due to industrial growth (39 %), agricultural film usage (30 %), tire wear (17 %), and domestic waste (14 %). During the same period, microplastic levels in cropland rose from 98 to 2401 items per kilogram of soil, and exposure levels for the Chinese population increased from 808 to 3168 items per kilogram. By 2050, a reduction in the use of agricultural films is expected to decrease cropland contamination by half. However, overall levels are anticipated to remain steady due to other persistent sources, indicating a continued spread of microplastics into subterranean environments, water bodies, and human systems. This study highlights China's microplastic challenges and suggests potential global trends, emphasizing the need for increased awareness and intervention worldwide.</p>","PeriodicalId":8,"journal":{"name":"ACS Biomaterials Science & Engineering","volume":" ","pages":"176918"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142492367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Midseason draining of paddy water suppresses microbial arsenic methylation in soil and alleviates rice straighthead disease.","authors":"Axiang Gao, Chuan Chen, Zhenguo Tian, Wanying Qu, Peng Wang, Fang-Jie Zhao","doi":"10.1016/j.scitotenv.2024.177068","DOIUrl":"10.1016/j.scitotenv.2024.177068","url":null,"abstract":"<p><p>Arsenic (As) methylation is an important component of As biogeochemical cycle. Microbial As methylation is enhanced under anoxic conditions in paddy soil, producing dimethylarsenate (DMA) which can cause physiological straighthead disease in rice. We conducted field experiments at two sites to test the effect of midseason draining of paddy water on microbial As methylation and the incidence of straighthead disease. Compared to continuous flooding, midseason draining increased soil Eh, decreased the abundances of microbial genes for arsenate reduction (arsC and arrA) and arsenite methylation (arsM), and lowered the concentrations of both inorganic As and DMA in soil porewater. Draining shifted microbial composition, resulting in decreases in the relative abundance of 17-132 amplicon sequence variants. Draining decreased the accumulation of DMA in rice husk and of inorganic As and DMA in rice grain, decreased the incidence of straighthead disease, and increased grain yield by 20-45 %. Further experiments were conducted at eight field sites to assess the effect of midseason draining in a split field design. Draining decreased husk DMA concentration by 40-65 % and increased grain yield by 25-209 %. This study demonstrates that midseason draining can effectively suppress microbial As methylation and alleviate rice straighthead disease, benefiting both grain yield and safety.</p>","PeriodicalId":8,"journal":{"name":"ACS Biomaterials Science & Engineering","volume":" ","pages":"177068"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142492368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stuck in the mangrove mud: The risk of trace element exposure to shore crabs in restored urban mangroves.","authors":"Jasmine A Rasmussen, William W Bennett, Steve D Melvin, Michael Sievers, Charlotte A McAneney, Ainsley Leaning, Rod M Connolly","doi":"10.1016/j.scitotenv.2024.177064","DOIUrl":"10.1016/j.scitotenv.2024.177064","url":null,"abstract":"<p><p>The restoration of mangroves in urban environments can increase the risk of contaminant exposure and subsequent health effects to resident biota, yet this risk is rarely considered in mangrove restoration programs. Here we assessed the influence of sediment chemistry on contaminant bioaccumulation in shore crabs from restored and natural mangroves in urban environments compared to a reference site. The concentrations of some trace elements were several-fold higher in the sediment and crab tissues of the urban restored site compared to the natural reference site (Cd = 6×, Co = 7×, Cr = 4×, Mn = 30×, and Ni = 18× greater in sediments, while Cd = 4×, Co = 2×, Cr = 2×, Mn = 6×, and Ni = 3× greater in crab tissues). NMR-based metabolomics on crabs revealed higher abundances of proline and glutamate at urban sites, which may be indicative of physiological stress from trace element contamination. Choice experiments were used to test habitat selectivity by crabs from each population, and showed that crabs avoided sediments from the contaminated urban sites. Our results suggest that restoring mangroves in contaminated environments could create ecological sinks, where animals take residence in the new habitat but are exposed to sediment-based contaminants, with potential implications for organism and population health.</p>","PeriodicalId":8,"journal":{"name":"ACS Biomaterials Science & Engineering","volume":"955 ","pages":"177064"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142492376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heavy metals in roadside soil along an expressway connecting two megacities in China: Accumulation characteristics, sources and influencing factors.","authors":"Min Peng, Zheng Yang, Zijia Liu, Wei Han, Qiaolin Wang, Fei Liu, Yalong Zhou, Honghong Ma, Jinfeng Bai, Hangxin Cheng","doi":"10.1016/j.scitotenv.2024.177095","DOIUrl":"10.1016/j.scitotenv.2024.177095","url":null,"abstract":"<p><p>Transportation is widely recognized as a significant contributor to heavy metal (HM) pollution in roadside soils. A better understanding of HM pollution in soils near expressways is crucial, particularly given the rapid expansion of expressway transportation in China in recent years. In this study, 329 roadside topsoil samples were collected along the Beijing-Tianjin Expressway, which connects two megacities in China. Chemical analysis showed that HM concentrations in the soil samples were generally below national limits. The mean pollution index (Pi) values for As, Cr, Cu, Ni, Pb, and Zn ranged from 0.94 to 1.01, while Cd and Hg exhibited slightly higher mean Pi values of 1.19 and 1.13, respectively. The Nemerow integrated pollution index values for all samples ranged from 0.71 to 4.97, with a mean of 1.26. This suggests a slight enrichment of HM above natural background levels, especially for Cd and Hg. Source apportionment using positive matrix factorization revealed that natural sources contributed the most to soil HMs (64.51 %), followed by agricultural sources (19.15 %), traffic sources (9.77 %), and industrial sources (6.57 %). The Shapley additive explanation analysis, based on the random forest model, identified soil organic carbon, deep soil HM content, altitude, total soil K₂O, urbanization composite impact index, and total soil P as primary influencing factors. This indicates that the impact of transportation on roadside soils along the Beijing-Tianjin Expressway is currently relatively limited. The prominent influence of soil properties and altitude underscored the importance of \"transport\" and \"receptor\" in the soil HMs accumulation process at the local scale. These findings provide critical data and a scientific basis for decision-makers to develop policies for expressway design and roadside soil protection.</p>","PeriodicalId":8,"journal":{"name":"ACS Biomaterials Science & Engineering","volume":" ","pages":"177095"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142492325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Acute and chronic effects of polymetallic nodule leachate in the marine copepod Tigriopus koreanus.","authors":"Yeun Park, Hye-Min Kang, Kongtae Ra, Chan Min Yoo, Jae Gon Park, Ji-Won Hwang, Kyun-Woo Lee","doi":"10.1016/j.scitotenv.2024.177274","DOIUrl":"10.1016/j.scitotenv.2024.177274","url":null,"abstract":"<p><p>Polymetallic nodules containing manganese, iron, and other metals are found in the seafloor. Leachates of polymetallic nodules can be discharged into seawater during ocean mining, disrupting marine ecosystems and causing adverse effects on marine organisms. Here, we investigate the acute and chronic effects of two polymetallic nodule leachates on the life-history parameters (mortality, development, and fecundity) and transcriptional differences of detoxification, antioxidant, and reproduction-related genes for cytochrome P450, glutathione S-transferase, and vitellogenin in the marine copepod Tigriopus koreanus. We also examine single and combined effects for six metals whose concentrations differ between the two leachates. No significant changes in mortality were observed, but developmental time was significantly shortened and fecundity increased in T. koreanus in response to exposure to the leachates. No adverse effects on physiological parameters were seen, but transcriptional differences by leachates were evident. In addition, manganese and iron in the leachates improved copepod development when they were combined with other metals. The findings of this study elucidate the potential impact of polymetallic nodule leachates on marine copepods.</p>","PeriodicalId":8,"journal":{"name":"ACS Biomaterials Science & Engineering","volume":" ","pages":"177274"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142542666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rising temperature impacts the trace metal uptake and toxicity in aquatic plants - A case study of Ni and Co in Elodea canadensis Michx.","authors":"Ludmiła Polechońska, Agnieszka Klink, Katarzyna Sokołowska","doi":"10.1016/j.scitotenv.2024.177307","DOIUrl":"10.1016/j.scitotenv.2024.177307","url":null,"abstract":"<p><p>The global warming and environmental pollution are two crucial contemporary concerns. As both are strongly connected with urbanisation and anthropogenic impact on the environment, they often affect the ecosystem simultaneously. Aquatic habitats are particularly susceptible to thermal and chemical pollution. Temperature influences nearly all physical and chemical features of water bodies and trace metals are known for their toxicity to aquatic organisms. However, effects of multiple stressors, cumulative effects as well as response and possible adaptations of organisms are still open questions. Thus, the aim of this study was to characterize the combined effect of temperature and two trace metals (Co and Ni) on the metal bioaccumulation and viability of a model aquatic macrophyte Elodea canadensis Michx. We exposed shoots of E. canadensis to three temperatures and four metal concentrations (together and separately) applied at environmentally relevant levels. Shoot growth and metal concentration in plants were measured after 120 h. Moreover, after 24, 72 and 120 h the changes in leaf cell morphology and viability were analysed. The results showed that metal accumulation was dose-dependent and was not affected by temperature. The growth of plants was not affected by temperature nor metals. On the other hand, the exposure to Co and Ni and the elevated temperature negatively affected cell viability of E. canadensis leaves which manifested by increased permeability of plasma membranes and visible necroses. The greatest damaged leaf areas were determined after 120 h in the highest concentration of both metals and the highest temperature which indicates synergistic impact of trace metals and temperature on performance of macrohydrophytes. The observed phenomena suggest that global warming and/or thermal pollution may have implications for the performance of aquatic macrophytes in chemically polluted waters, their ability to spread and colonize polluted habitats and their suitability in phytoremediation.</p>","PeriodicalId":8,"journal":{"name":"ACS Biomaterials Science & Engineering","volume":" ","pages":"177307"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142556837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A widely employed water supply catchment model and other empirical insights suggest that logging may contribute to lower water yields.","authors":"Chris Taylor, Heather Keith, David Lindenmayer","doi":"10.1016/j.scitotenv.2024.177218","DOIUrl":"10.1016/j.scitotenv.2024.177218","url":null,"abstract":"<p><p>In an earlier study published in Science of the Total Environment (Taylor et al., 2019), we used an established hydrological model (based on what is known as the Kuzcera curve), to analyse the impacts of logging on water yields in a major watershed - the Thomson water supply catchment - in the Central Highlands of Victoria, south-eastern Australia. We demonstrated that under some plausible climate change projections, the impacts of logging on catchment water yields may exceed those resulting from climate change (Taylor et al., 2019). In a Letter to the Editor (2024), it was argued there were problems with our analysis and, as a result, if the Thomson water supply catchment was subject to logging and thinning such actions may be \"water positive\". While we acknowledge a lack of availability in forest and hydrological field inventory data across the Thomson catchment, as well as variability in differing modelled results, we outline some important reasons our original conclusions that logging may lead to reduced water yields remain vali.</p>","PeriodicalId":8,"journal":{"name":"ACS Biomaterials Science & Engineering","volume":"955 ","pages":"177218"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142566976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Foliar spraying of carbon dots reduces cadmium accumulation in rice by regulating rhizosphere immobilization, root development, and subcellular distribution.","authors":"Yadong Li, Ronghua Xu, Jingyi Qi, Shang Lei, Qianying Han, Congli Ma, Hongjie Wang","doi":"10.1016/j.scitotenv.2024.177236","DOIUrl":"10.1016/j.scitotenv.2024.177236","url":null,"abstract":"<p><p>Cadmium (Cd) is a toxic heavy metal widespread in rice paddies and threatens food safety and human health. Foliar exposure represents a cost-effective, simple, and time-independent approach to enhance rice resistance and minimize Cd accumulation. Herein, foliar spraying of carbon dots (CDs) was found to significantly reduce Cd accumulation in rice roots and shoots by 31.51 % and 17.93 %, respectively. Gene expression and mineral nutrient analyses indicated that CDs exposure inhibited Cd uptake by suppressing OsNramp1 and increasing competition of Fe and Mn with Cd for OsNramp5. Besides, CDs exposure down-regulated OsHMA2 for Cd transport from roots to aerial parts and up-regulated OsHMA3 for Cd vacuole sequestration. Additionally, CDs treatment promoted rice root development by increasing root biomass, cell walls, and mechanical resistance, which helped to anchor rice plants and impede Cd uptake. Furthermore, CDs spraying increased the organic carbon content and altered the microbial communities in the rice rhizosphere by increasing root exudation. This process facilitated the binding of dissolved Cd in pore water to organic matter and iron‑manganese oxides, ultimately reducing the bioavailability of Cd. This study underscores the effectiveness and mechanism of simple foliar spraying of CDs to mitigate Cd accumulation in rice.</p>","PeriodicalId":8,"journal":{"name":"ACS Biomaterials Science & Engineering","volume":" ","pages":"177236"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142567180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Complex interactions of rare earth elements in aquatic systems: Comparing observed and predicted cellular responses on Mytilus galloprovincialis.","authors":"Carla Leite, Madalena Andrade, João Pinto, Amadeu M V M Soares, Montserrat Solé, Eduarda Pereira, Rosa Freitas","doi":"10.1016/j.scitotenv.2024.176608","DOIUrl":"10.1016/j.scitotenv.2024.176608","url":null,"abstract":"<p><p>Recent societal and technological developments have led to new sources of contamination, particularly from electronic waste (e-waste). The rapid increase in e-waste, combined with inadequate disposal and recycling practices has resulted in rising levels of hazardous substances in aquatic systems, including rare-earth elements (REEs). However, the effects of REEs on aquatic organisms remain poorly understood. This lack of understanding is concerning since REEs can simultaneously appear in aquatic systems. Thus, this study aimed to evaluate the impacts of Yttrium (Y), Lanthanum (La), and Gadolinium (Gd), individually and as mixtures on the mussel species Mytilus galloprovincialis. Biomarkers related to metabolism, energy reserves, defence enzymes, redox balance, cellular damage, and neurotoxicity were analyzed. The results obtained showed that Y alone caused minimal stress, while Gd, La, and their mixtures induced from moderate to severe stress, increasing metabolic activity, and enzyme responses. This study highlights the ecological impacts of REEs mixtures on aquatic organisms. The complex interactions and additive effects, especially with Gd, underline the need for further research on contaminant mixtures.</p>","PeriodicalId":8,"journal":{"name":"ACS Biomaterials Science & Engineering","volume":" ","pages":"176608"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142338517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}