Journal of Environmental Sciences-china最新文献

{"title":"Growth behavior of heavy metal sulfide particles: A comparison between gas-liquid and liquid-liquid sulfidation","authors":"Chunxue Li ,&nbsp;Meiqing Shi ,&nbsp;Qingzhu Li ,&nbsp;Jiahui Wu ,&nbsp;Xu Yan ,&nbsp;Qingwei Wang ,&nbsp;Zhang Lin ,&nbsp;Liyuan Chai","doi":"10.1016/j.jes.2024.08.011","DOIUrl":"10.1016/j.jes.2024.08.011","url":null,"abstract":"<div><div>Sulfide precipitation is an effective method for treating acidic heavy metal wastewater. However, the process often generates tiny particles with poor settling performance. The factors and mechanisms influencing particle size and settling performance remain unclear. In this study, the growth behavior of CuS particles generated by two sulfide precipitation methods, gas-liquid and liquid-liquid sulfidation, was investigated. The effects of acidity, sulfur-to-copper molar ratio, and temperature on particle size were analyzed. The results showed that increasing the temperature had an adverse effect on CuS particle growth. Additionally, we found that acidity and sulfur-to-copper molar ratio had a more significant impact on particle growth in the liquid-liquid sulfidation system than in the gas-liquid sulfidation system. Based on supersaturation calculations and XPS analysis, it is found that particle growth in gas-liquid sulfidation systems is mainly influenced by supersaturation, while particle growth in liquid-liquid sulfidation systems is mainly affected by surface charge. This study provides valuable insights into the factors that influence particle growth in sulfide precipitation and can inform the development of strategies to improve the effective precipitation of sulfide nanoparticles in acidic wastewater.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"154 ","pages":"Pages 615-623"},"PeriodicalIF":5.9,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152109","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 V2O3 spiny hollow nanosphere for efficient adsorption of precious metal ions in complicated matrices","authors":"Weiyuan Liu ,&nbsp;Wentao Wang ,&nbsp;Jiahui Zhou ,&nbsp;Hongxia Deng ,&nbsp;Shanshan Tong","doi":"10.1016/j.jes.2024.08.013","DOIUrl":"10.1016/j.jes.2024.08.013","url":null,"abstract":"<div><div>Treatment of precious metals in electronic waste has attracted tremendous attention and is essential for both environmental protection and resource sustainable development. In this study, a novel adsorbent for precious metal ions, V₂O₃ spiny hollow nanospheres (p-V₂O₃ SHN), was synthesized through a one-step hydrothermal-assisted methodology for the adsorption of Au(III), Ag(I), Pd(II), and Pt(IV) from the leaching solution of electronic waste. The results reveal that the p-V₂O₃ SHN hierarchy was successfully constructed with a hollow structure and dense spiny morphology. The prepared p-V₂O₃ SHN can effectively remove precious metal ions such as Au(III), Ag(I), Pd(II), and Pt(IV), with the selective capture order being Au(III) &gt; Ag(I) &gt; Pt(IV) &gt; Pd(II) &gt; other metal ions. This superior adsorption capability can be attributed to the multi-diffusible, intermingled composition, and numerous active sites decorating the p-V₂O₃ SHN hierarchy, facilitating the uptake of Au(III), Ag(I), Pd(II), and Pt(IV) ions from electronic waste. The Langmuir model provided a better fit for the uptake process, revealing maximum uptake capacities of 833.33 mg/g for Au(III), 370.37 mg/g for Ag(I), 42.01 mg/g for Pd(II), and 77.51 mg/g for Pt(IV) on p-V₂O₃ SHN. Remarkably, p-V₂O₃ SHN exhibited a robust affinity for the adsorbate due to the presence of surface defects and reduction reactions. The new p-V₂O₃ SHN also demonstrated good reusability for three sorption cycles, highlighting its potential for electronic waste treatment. Due to its facile synthesis and excellent efficiency, hierarchical p-V₂O₃ SHN presents itself as a promising candidate for the selective uptake of Au(III), Ag(I), Pt(IV), and Pd(II) from electronic waste.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"154 ","pages":"Pages 349-364"},"PeriodicalIF":5.9,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152112","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":"Cotransport of Thallium(I) and kaolinite colloids in quartz sand media containing sodium humate: Ionic strength, pH and kaolinite colloid concentration","authors":"Shuangrui Yang ,&nbsp;Zhiheng Li ,&nbsp;Chengxue Ma ,&nbsp;Yuheng Huang ,&nbsp;Hongye Li ,&nbsp;Die Hu ,&nbsp;Hongxia Liu ,&nbsp;Xiaoliu Huangfu","doi":"10.1016/j.jes.2024.08.019","DOIUrl":"10.1016/j.jes.2024.08.019","url":null,"abstract":"<div><div>In real soil environments, humus, colloids and other components significantly affect pollutant migration behavior. Investigating Tl(I) and kaolinite colloids’ cotransport in quartz sand media containing sodium humate (HA-Na) is vital for comprehending Tl(I) migration underground. This study examined the migration of Tl(I) and kaolinite colloids across varying pH levels (5, 7), ionic strengths (ISs) (1, 5, 50 mmol/L), and kaolinite colloid concentrations. Results indicate that lower IS and pH promote Tl(I) migration when transported alone. In cotransport system, kaolinite promotes Tl(I) migration under acidic conditions but inhibits it under neutral conditions, except at high kaolinite concentrations, where the effect shifts from inhibition to promotion. This is primarily due to changes in the zeta potential of quartz sand, HA-Na, and kaolinite, as well as Tl(I) adsorption after HA-Na and kaolinite occupy binding sites. Competitive adsorption between cations and Tl(I) also plays a significant role. Conversely, in individual system, higher IS and pH inhibit kaolinite migration, while increased kaolinite concentration promotes it. In cotransport system, Tl(I) promotes kaolinite migration under acidic conditions but inhibits it under neutral conditions, except at low kaolinite concentrations. This relates to changes in the zeta potential between kaolinite and the medium, as well as the retention of HA-Na in the column and its adsorption onto kaolinite. Competitive adsorption and binding site saturation also have an impact. This study enhances understanding of Tl(I) migration by revealing the dual effect of kaolinite colloids under different environmental conditions, contributing to better knowledge of Tl(I) fate and transport in natural environments.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"154 ","pages":"Pages 138-152"},"PeriodicalIF":5.9,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151015","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":"Mixture analysis of associations between environmental and workplace toxins and liver damage and telomere length, stratified by race/ethnicity","authors":"Ning Ma ,&nbsp;Rowena Yip ,&nbsp;Mark Woodward ,&nbsp;Sara Lewis ,&nbsp;Michael Crane ,&nbsp;Artit Jirapatnakul ,&nbsp;Costica Aloman ,&nbsp;Meena B. Bansal ,&nbsp;Douglas Dieterich ,&nbsp;Louis Gros ,&nbsp;Damaskini Valvi ,&nbsp;Elena Colicino ,&nbsp;David Yankelevitz ,&nbsp;Claudia Henschke ,&nbsp;Andrea D. Branch","doi":"10.1016/j.jes.2024.08.020","DOIUrl":"10.1016/j.jes.2024.08.020","url":null,"abstract":"<div><div>This study aimed to identify the worst “bad actors” in mixtures of pollutants contributing to liver damage and shorter telomeres in the U.S. population, using weighted quantile sum (WQS) modeling with stratification by race/ethnicity. We conducted a comprehensive cross-sectional analysis of mixtures of pollutants in National Health and Nutrition Examination Survey datasets: (1) 33,979 adults with blood levels of cadmium (Cd), lead (Pb), and mercury, including subsets with measurements of per-/polyfluoroalkyl substances (PFAS), and polychlorinated biphenyls (PCBs)/polychlorinated dibenzo-<em>p</em>-dioxins and dibenzofurans (PCDD/Fs); and (2) 7360 adults with measurements of telomeres, Cd, and Pb. Multivariable-adjusted WQS regression examined associations between WQS mixture indices and liver injury (alanine aminotransferase (ALT)-elevation), advanced liver-fibrosis (LF), and telomere length. WQS_metal indices were associated with advanced-LF in all racial/ethnic groups. The top contributor was Cd in the total population and in non-Hispanic Whites (NHW), while Pb was the top contributor in non-Hispanic Blacks (NHB). The WQS_{metal-PCB-PCDD/F} index was associated with ALT-elevation, with PCB126, Cd and Pb as main contributors; the odds ratio (OR) per decile was 1.50 (95 % CI, 1.26–1.78), while the OR per decile of the WQS_metal-PFAS index was 1.03 (95 % CI, 0.98–1.05), not significant. WQS_metal indices were associated with shorter telomeres. Cd was main contributor associated with advanced-LF in NHW, while Pb was the major bad actor in NHB, suggesting that NHB may be especially susceptible to Pb toxicity. Metals were associated with shorter telomeres. Metal and PCB/PCDD/F mixtures were associated with ALT-elevation. Heavy metals and organic chemicals may contribute to liver-related morbidity and healthcare disparities.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"155 ","pages":"Pages 316-328"},"PeriodicalIF":5.9,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143360800","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}

{"title":"Synergistic catalytic degradation of benzene and toluene on spinel MMn2O4 (MCo, Ni, Cu) catalysts","authors":"Xin Xing ,&nbsp;Zhe Li ,&nbsp;Yixin Wang ,&nbsp;Zonghao Tian ,&nbsp;Dandan Liu ,&nbsp;Jie Cheng ,&nbsp;Zhengping Hao","doi":"10.1016/j.jes.2024.08.016","DOIUrl":"10.1016/j.jes.2024.08.016","url":null,"abstract":"<div><div>Owing to the complexity of multicomponent gases, developing multifunctional catalysts for synergistic removal of benzene and toluene remains challenging. The spinel MMn₂O₄ (M<img>Co, Ni, or Cu) catalysts were successfully synthesized via the sol–gel method and tested for their catalytic performance for simultaneous degradation of benzene and toluene. The CuMn₂O₄ sample exhibited the best catalytic performance, the conversion of benzene reached 100 % at 350 °C, and toluene conversion reached 100 % at 250 °C. XRD, N₂ adsorption-desorption, HRTEM-EDS, ED-XRF, Raman spectroscopy, H₂-TPR, NH₃-TPD, O₂-TPD and XPS were used to characterize the physical and chemical properties of MMn₂O₄ catalysts. The excellent redox properties, high concentration of surface Mn⁴⁺, and adsorption of oxygen species over the CuMn₂O₄ sample facilitated the simultaneous and efficient removal of benzene and toluene. Additionally, in situ DRIFTS illustrated the intermediate species and reaction mechanism for the synergetic catalytic oxidation of benzene and toluene. Notably, as an effective catalytic material, spinel oxide exhibited excellent synergistic degradation performance for benzene and toluene, providing some insight for the development of efficient multicomponent VOC catalysts.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"154 ","pages":"Pages 238-251"},"PeriodicalIF":5.9,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151013","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":"Interdecadal variations of aerosol and its composition over the Fenwei Plain based on multi-source observations","authors":"Abula Tuheti ,&nbsp;Zipeng Dong ,&nbsp;Shunxi Deng","doi":"10.1016/j.jes.2024.08.012","DOIUrl":"10.1016/j.jes.2024.08.012","url":null,"abstract":"<div><div>Understanding the variations and potential source of air pollution is essential for implementing targeted mitigation actions. However, the distribution and long-term trends of Aerosol Optical Depth (AOD) and its components over the Fenwei Plain (FWP) have not been thoroughly investigated. Furthermore, the potential source contribution of AOD loading is still unclear. Thus, maximum synthesis and Mann-Kendall trend (MK) test with Sen's Slope methods are employed to reveal the spatiotemporal variation characteristics of AOD over the FWP. The Potential Source Contribution Function (PSCF) model was applied to analyze the potential source contribution of AOD over the FWP. Results demonstrated that the AOD in spatial pattern exhibited consistency with the topography. AOD over the FWP fluctuated annually from 2000 to 2020, with an increase in the previous decade followed by a gradual decline after 2011. There was a significant monthly variation in AOD with higher values in August (0.47 ± 0.21) and lower in November (0.29 ± 0.12). A positive AOD trend was confirmed from 2000 to 2010 yet a negative trend is identified from 2011 to 2020. The sulfate aerosol (AOD_SU) exhibited an increasing trend over an extended period. Clear-sky radiation shows a negative trend at the surface and the top of the atmosphere (TOA) from 2000 to 2010, which is consistent with the trend in AOD. The AOD in FWP was primarily influenced by local emissions, with contributions from northern and northwestern sources. This research offers an enhanced overarching comprehension of the distribution and regional climate effects of aerosols over the FWP.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"156 ","pages":"Pages 139-156"},"PeriodicalIF":5.9,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143576803","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":"Disparities in precipitation effects on PM2.5 mass concentrations and chemical compositions: Insights from online monitoring data in Chengdu","authors":"Yi Li ,&nbsp;Li Zhou ,&nbsp;Hefan Liu ,&nbsp;Song Liu ,&nbsp;Miao Feng ,&nbsp;Danlin Song ,&nbsp;Qinwen Tan ,&nbsp;Hongbin Jiang ,&nbsp;Sophia Zuoqiu ,&nbsp;Fumo Yang","doi":"10.1016/j.jes.2024.08.015","DOIUrl":"10.1016/j.jes.2024.08.015","url":null,"abstract":"<div><div>Precipitation plays a pivotal role in wet deposition, significantly affecting aerosol purification. The efficacy of precipitation in removing aerosols depends on its type and the characteristics of the particulates involved. However, further research is necessary to fully understand how precipitation impacts PM_2.5 components. This study utilized high-temporal-resolution data on PM_2.5, its components and meteorological factors to examine varying responses influenced by precipitation intensity and duration. The findings indicate that increased rainfall intensity and duration enhance PM_2.5 and its constituents removal efficiency. Specifically, longer precipitation periods significantly improve PM_2.5 purification, especially with drizzle and light rain. Moreover, there is a direct correlation between pre-precipitation PM_2.5 levels and its scavenging rates, with drizzle potentially exacerbating PM_2.5 pollution under cleaner conditions (≤ 35 µg/m³). Seasonally, the efficacy of removing PM_2.5 components varies notably in response to drizzle and light rain. In spring, higher PM_2.5 levels after drizzle were primarily due to increased organic carbon concentrations favored by higher relative humidity and lower pH conditions compared to other seasons, conducive to secondary organic aerosol production. Lower wind speeds and higher temperatures further contribute to water-soluble organic carbon accumulation. Daytime and nighttime precipitation exerted differing influences on PM_2.5 components, particularly in spring where daytime drizzle and light rain significantly increased PM_2.5 and its constituents, notably NO₃^-, potentially associated with phase distribution changes between gas and aerosol phases in low-temperature, high-RH conditions compared to nighttime. These results propose a dual-impact mechanism of precipitation on PM_2.5 and provide scientific basis for designing effective control strategies.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"156 ","pages":"Pages 421-434"},"PeriodicalIF":5.9,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761276","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 perfluorooctanoic acid on denitrifying phosphorus removal system under short-term stress","authors":"Yumeng Yan ,&nbsp;Shaopo Wang ,&nbsp;Lingjie Liu ,&nbsp;Fansheng Meng ,&nbsp;Dong Wang ,&nbsp;Chunsheng Qiu","doi":"10.1016/j.jes.2024.08.004","DOIUrl":"10.1016/j.jes.2024.08.004","url":null,"abstract":"<div><div>Perfluorooctanoic acid (PFOA), a novel contaminant, is extensively found in aquatic environments. However, the capability of the denitrifying phosphorus removal process to treat PFOA-containing wastewater, as well as its response mechanisms, are unclear. This study used batch experiments to assess the short-term impact of PFOA on denitrifying phosphorus removal systems. During a single cycle, the addition of PFOA predominantly enhanced phosphate removal in the system mainly by the anaerobic phosphorus release pathway, but had no substantial effect on nitrogen removal. COD removal efficiency has a substantial positive correlation with C6-HSL and C8-HSL concentrations. As the PFOA concentration increased, the ROS concentration and enzyme activity also increased, while the PN/PS ratio decreased, causing the sludge to become looser. At the beginning of the second cycle, the impact of PFOA on phosphorus removal efficiency shifted from promotion to inhibition. These findings shed fresh light on the influence of PFOA on the denitrifying phosphorus removal mechanism, potentially furthering its use in the treatment of fluoride-containing wastewater.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"154 ","pages":"Pages 31-40"},"PeriodicalIF":5.9,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151556","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":"Investigation on the effect of ship emissions on the air quality: A case study in Hainan Island, China","authors":"Rongfu Xie ,&nbsp;Qiao Xing ,&nbsp;Jianbing Gao ,&nbsp;Xiaochen Wang ,&nbsp;Wenshuai Xu ,&nbsp;Zhaofeng Lv ,&nbsp;Wen Yi ,&nbsp;Junchao Zhao ,&nbsp;Zhenyu Luo ,&nbsp;Xiaochen Wu ,&nbsp;Huan Liu","doi":"10.1016/j.jes.2024.08.010","DOIUrl":"10.1016/j.jes.2024.08.010","url":null,"abstract":"<div><div>This paper presents an air quality simulation model that incorporates shipping activities and weather conditions, with a case study of Hainan Island to examine the impact of ship emissions on air quality. The findings reveal that the density of automatic identification system (AIS) signals is particularly high in the southern coastal regions. The results showed that the annual ship emissions recorded the highest density of 896.7 tons/0.01°, 49.8 tons/0.01°, 1139.7 tons/0.01°, and 122,000 tons/0.01° for sulfur oxides (SO<em>_x</em>), particulate matter (PM), nitrogen oxides (NO<em>_x</em>), and carbon dioxide (CO₂), respectively. Furthermore, the partial distributions of these emissions were not significantly affected by the seasons. Ships within twelve nautical miles of Hainan coastlines emit approximately 2817.7 tons of SO<em>_x</em>, 14,686.4 tons of NO<em>_x</em>, 630.4 tons of PM_2.5, and 416.9 tons of hydrocarbons (HC) annually. These emissions are primarily concentrated in the sea areas surrounding the ports of Haikou, Yangpu, Basuo, and Sanya. Ships manufactured between 2000 and 2010 have contributed significantly to air pollution, with SO<em>_x</em> and HC emissions accounting for approximately 51 % and 56 % of total emissions, respectively. However, for ships manufactured after 2016, these proportions have dropped to approximately 10 %. In terms of air pollutants from ship emissions in Hainan Island, the spatial distribution of their contributions is significantly uneven. The impact of PM_2.5 differs significantly depending on the season, with the concentrations being substantially higher during Spring. However, the proportions of O₃ and other pollutants do not vary significantly, except during Spring.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"156 ","pages":"Pages 114-125"},"PeriodicalIF":5.9,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562565","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":"Variations in the leaf economics spectrum, anatomical, ultrastructural, and stomatal traits of five tree species in the urban-rural air pollution environment","authors":"Xiangru Yan ,&nbsp;Pin Li ,&nbsp;Xianjie Wu ,&nbsp;Jiahui Wang ,&nbsp;Zejin Wang ,&nbsp;Jingliang Xu ,&nbsp;Xiaofan Hou ,&nbsp;Dayong Fan ,&nbsp;Zhengbing Yan ,&nbsp;Enzai Du","doi":"10.1016/j.jes.2024.08.009","DOIUrl":"10.1016/j.jes.2024.08.009","url":null,"abstract":"<div><div>Rapid urbanization has contributed to global increases in air pollution derived from urban areas. Unlike natural forests, urban forests are exposed to higher concentrations of airborne pollutants due to the strong urban-suburban-rural pollutant emission gradients. However, there remains a pressing lack of available information pertaining to the urban air pollution-related effects on the leaf economics spectrum, anatomical, ultrastructural, and stomatal traits of tree species along an urban-rural gradient. Here, the degree to which urban air pollution impacts the adaption of greening tree species and associated service functions was assessed by sampling five common tree species (<em>Acer pictum, Fraxinus chinensis, Koelreuteria paniculata, Salix babylonica, Sophora japonica</em>) along urban-rural-natural forests in the Beijing metropolitan region of China. These analyses revealed a significant reduction in leaf mass per unit area (–13.4 %), leaf thickness (–16.7 %), and stomatal area (–27.5 %) with increasing proximity to areas of greater air pollution that coincide with significant increases in leaf tissue density (+12.6 %), leaf nitrogen content (+10.1 %), relative chlorophyll content (+2.7 %), and stomatal density (+11.9 %). Higher air pollution levels were associated with organelle changes including gradual disintegration of chloroplasts, larger intercellular spaces and apparent starch and plastoglobuli deposition. Air pollution was conducive to the strengthening of the trade-off potential and adaptation strategies of trees in urban ecosystems, which are associated with trees with a rapid investment return strategy associated with thick leaves and strong photosynthetic capacity. These results provide strong empirical evidence of the profound air pollution-induced changes in leaf functional traits and adaption ability of urban forest tree species.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"155 ","pages":"Pages 177-192"},"PeriodicalIF":5.9,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158424","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}