Pub Date : 2025-12-03DOI: 10.3389/fenvs.2025.1709936
Renren Wang, Hao Xiao, Yi Tan, Chen Luo, Yuhang Zhou, Ruibang Xie, Chuan Seng Tan, Yifei Yang, Cheng Liu, Hengyang Wang, Junxiao Yang, Tao Duan, Lin Zhu
The efficient capture of radioactive iodine is critical for nuclear safety due to its high mobility and toxicity. Bismuth sulfide (Bi 2 S 3 ) aerogel, synthesized via a one-step hydrothermal method, demonstrates exceptional iodine adsorption performance. Characterization by scanning electron microscopy (SEM) and BET confirmed the material’s porous structure, which facilitated iodine uptake. Batch experiments revealed a high adsorption capacity of 1,204 mg/g, with kinetics and isotherms well described by the pseudo-second-order model and Freundlich isotherm, respectively, indicating that the adsorption process is dominated by chemisorption. The adsorption mechanism involves iodine phase transfer and subsequent formation of stable BiI 3 phases, ensuring long-term immobilization. The Bi 2 S 3 aerogel demonstrates superior chemical and thermal stability, high capture efficiency, and cost-effectiveness, further highlighting its practical potential for nuclear waste management. This work advances the design of bismuth-based adsorbents by combining high capacity, stability, and scalable synthesis, thereby offering a sustainable solution for radioactive iodine capture.
{"title":"One-step hydrothermal synthesis of bismuth sulfide aerogel for efficient iodine capture","authors":"Renren Wang, Hao Xiao, Yi Tan, Chen Luo, Yuhang Zhou, Ruibang Xie, Chuan Seng Tan, Yifei Yang, Cheng Liu, Hengyang Wang, Junxiao Yang, Tao Duan, Lin Zhu","doi":"10.3389/fenvs.2025.1709936","DOIUrl":"https://doi.org/10.3389/fenvs.2025.1709936","url":null,"abstract":"The efficient capture of radioactive iodine is critical for nuclear safety due to its high mobility and toxicity. Bismuth sulfide (Bi 2 S 3 ) aerogel, synthesized via a one-step hydrothermal method, demonstrates exceptional iodine adsorption performance. Characterization by scanning electron microscopy (SEM) and BET confirmed the material’s porous structure, which facilitated iodine uptake. Batch experiments revealed a high adsorption capacity of 1,204 mg/g, with kinetics and isotherms well described by the pseudo-second-order model and Freundlich isotherm, respectively, indicating that the adsorption process is dominated by chemisorption. The adsorption mechanism involves iodine phase transfer and subsequent formation of stable BiI 3 phases, ensuring long-term immobilization. The Bi 2 S 3 aerogel demonstrates superior chemical and thermal stability, high capture efficiency, and cost-effectiveness, further highlighting its practical potential for nuclear waste management. This work advances the design of bismuth-based adsorbents by combining high capacity, stability, and scalable synthesis, thereby offering a sustainable solution for radioactive iodine capture.","PeriodicalId":12460,"journal":{"name":"Frontiers in Environmental Science","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://public-pages-files-2025.frontiersin.org/journals/environmental-science/articles/10.3389/fenvs.2025.1709936/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147332392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
With the increasing presence of emerging pollutants in the environment, the combined toxic effects of organotin compounds and microplastics on aquatic organisms have garnered significant attention. This study investigated the individual and combined toxic effects of triphenyltin (TPT, 1 μg/L) and microplastics (MP, 0.5 mg/L) on oxidative stress, energy metabolism, and digestive function in Cyprinus carpio over a 42-day exposure period. The results demonstrated that TPT and MP combined exposure significantly reduced glutathione (GSH) activity, enhanced the activity of inflammatory factors (IL-1β) and upregulated the expression of antioxidant and inflammatory genes ( gpx and il-1β ) comparing with the control group in the liver, indicating severe oxidative stress. Combined exposure exhibited complex interactive effects, potentially involving adaptive or antagonistic mechanisms. Regarding energy metabolism, TPT and MP inhibited Na + /K + -ATPase activity, disrupting ion balance in the gills, whereas combined exposure promoted the expression of genes related to fatty acid metabolism ( cpt1 and lpl ). The combined exposure led to a partial restoration of ion pump activity, which implies the existence of a compensatory mechanism. TPT and MP exerted an inhibitory effect on the activity of digestive enzymes in the intestines, while they triggered a compensatory reaction by upregulating the expression of digestive enzyme genes. The combined exposure vividly unveiled the complex and intertwined interactions between the inhibitory and adaptive responses, highlighting the multifaceted nature of the biological impacts under such combined stressors. This study provides essential insights into the combined toxicity of TPT and MP, highlighting their ecological risks and underscoring the need for improved environmental monitoring and management strategies.
{"title":"The impact of combined exposure to triphenyltin and microplastics on the oxidative stress, energy metabolism, and digestive function of common carp (Cyprinus carpio)","authors":"Ping Li, Yiqun Wu, Siqi Zhang, Tengzhou Li, Chang Liu, Ling Liu, Zhihua Li","doi":"10.3389/fenvs.2025.1614013","DOIUrl":"https://doi.org/10.3389/fenvs.2025.1614013","url":null,"abstract":"With the increasing presence of emerging pollutants in the environment, the combined toxic effects of organotin compounds and microplastics on aquatic organisms have garnered significant attention. This study investigated the individual and combined toxic effects of triphenyltin (TPT, 1 μg/L) and microplastics (MP, 0.5 mg/L) on oxidative stress, energy metabolism, and digestive function in Cyprinus carpio over a 42-day exposure period. The results demonstrated that TPT and MP combined exposure significantly reduced glutathione (GSH) activity, enhanced the activity of inflammatory factors (IL-1β) and upregulated the expression of antioxidant and inflammatory genes ( gpx and il-1β ) comparing with the control group in the liver, indicating severe oxidative stress. Combined exposure exhibited complex interactive effects, potentially involving adaptive or antagonistic mechanisms. Regarding energy metabolism, TPT and MP inhibited Na + /K + -ATPase activity, disrupting ion balance in the gills, whereas combined exposure promoted the expression of genes related to fatty acid metabolism ( cpt1 and lpl ). The combined exposure led to a partial restoration of ion pump activity, which implies the existence of a compensatory mechanism. TPT and MP exerted an inhibitory effect on the activity of digestive enzymes in the intestines, while they triggered a compensatory reaction by upregulating the expression of digestive enzyme genes. The combined exposure vividly unveiled the complex and intertwined interactions between the inhibitory and adaptive responses, highlighting the multifaceted nature of the biological impacts under such combined stressors. This study provides essential insights into the combined toxicity of TPT and MP, highlighting their ecological risks and underscoring the need for improved environmental monitoring and management strategies.","PeriodicalId":12460,"journal":{"name":"Frontiers in Environmental Science","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.frontiersin.org/journals/environmental-science/articles/10.3389/fenvs.2025.1614013/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147334200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2025-01-01Epub Date: 2025-07-15DOI: 10.3389/fenvs.2025.1593899
Fatema-Tuz Johura, Marzia Sultana, Jade Lewis, Abdus Sadique, David A Sack, Richard B Sack, Munirul Alam, Subhra Chakraborty
Background: The prevalence of ETEC in the environment could be influenced by environmental factors, which may contribute to seasonal outbreaks. This study assessed the seasonal prevalence of the ETEC population in water bodies in relation to ecological changes in Bangladesh.
Method: The presence of ETEC in water, plankton, and sediment samples collected from water bodies in Mathbaria, a southern coastal region, was investigated using quantitative PCR (qPCR) and an extensive culture method over a year. Concurrently, the physico-chemical parameters of the water were measured. We also tested aquatic samples from Chhatak, a northern hilly region.
Results: ETEC was detected in a high proportion (56%-78%) in water, plankton, and sediment samples from both sites. In Mathbaria, higher abundance of ETEC was noted in fall and spring, followed by summer and lowest in the monsoon. ETEC positivity was high in winter by qPCR, but no viable ETEC could be isolated. Environmental conditions such as neutral to low alkaline pH, elevated dissolved oxygen levels, and warmer water temperatures showed a trend of association with increased ETEC prevalence.
Conclusion: The persistence of ETEC in environmental water and their association with ecologic factors may help to explain seasonal illnesses in people.
{"title":"Occurrence of enterotoxigenic <i>Escherichia coli</i> in the aquatic environment and impact of climatic factors.","authors":"Fatema-Tuz Johura, Marzia Sultana, Jade Lewis, Abdus Sadique, David A Sack, Richard B Sack, Munirul Alam, Subhra Chakraborty","doi":"10.3389/fenvs.2025.1593899","DOIUrl":"10.3389/fenvs.2025.1593899","url":null,"abstract":"<p><strong>Background: </strong>The prevalence of ETEC in the environment could be influenced by environmental factors, which may contribute to seasonal outbreaks. This study assessed the seasonal prevalence of the ETEC population in water bodies in relation to ecological changes in Bangladesh.</p><p><strong>Method: </strong>The presence of ETEC in water, plankton, and sediment samples collected from water bodies in Mathbaria, a southern coastal region, was investigated using quantitative PCR (qPCR) and an extensive culture method over a year. Concurrently, the physico-chemical parameters of the water were measured. We also tested aquatic samples from Chhatak, a northern hilly region.</p><p><strong>Results: </strong>ETEC was detected in a high proportion (56%-78%) in water, plankton, and sediment samples from both sites. In Mathbaria, higher abundance of ETEC was noted in fall and spring, followed by summer and lowest in the monsoon. ETEC positivity was high in winter by qPCR, but no viable ETEC could be isolated. Environmental conditions such as neutral to low alkaline pH, elevated dissolved oxygen levels, and warmer water temperatures showed a trend of association with increased ETEC prevalence.</p><p><strong>Conclusion: </strong>The persistence of ETEC in environmental water and their association with ecologic factors may help to explain seasonal illnesses in people.</p>","PeriodicalId":12460,"journal":{"name":"Frontiers in Environmental Science","volume":"13 ","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12724539/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145826980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2024-09-18DOI: 10.3389/fenvs.2024.1457970
Owen Fenton, Karen Daly, Pat Tuohy, John Cardiff, Simon Leach, Lungile Senteni Sifundza, John Murnane
Farm roadway runoff is a high-risk source of pollution when connectivity with waters occurs. Nutrients in this runoff are dominated by fresh animal deposits, but recent dairy and beef farm studies showed that available phosphorus (P) accumulates in roadway surface material and can be lost in runoff. A current knowledge gap is to examine available P concentrations in unsealed roadway and trackway (non-maintained) network of a lowland sheep farm. The present study focused on a 45 ha farm stocked with 544 sheep in south-east Ireland. Ten locations were sampled along with the adjacent fields for available P (i.e., Morgan’s P) and ancillary parameters (e.g., pH, total P and heavy metals) in December 2022. The first sampling location was on an aggregate roadway and the other nine were on trackways representing an older aggregate roadway network used by the flock but now covered with soil and grass. Results showed a distinct difference in surface material pH between roadway and trackway locations. Trackways had a pH that mimicked adjacent fields around the agronomic optimum for grassland of ∼6.2. All sampling locations had elevated available P concentrations, ranging from 26.3 to 111.0 mg L−1 (mean 62.8 mg L−1), similar to the spatial distribution for dairy farms but above those found at beef farms previously studied. The highest available P concentrations were found in roadway and trackway sections adjacent to the farmyard. Other elevated sampling areas were on trackways (87.3 or 97.7 mg P L−1) away from the farmyard where sheep are funnelled to pasture, stop to seek shade, urinate and defecate but do not graze. By contrast the average available P concentration for the surrounding fields was 8.4 mg L−1 with a range of 2.7–15.9 mg L−1. Two sampling areas combine to create a critical source area where a high available P source becomes visibly mobilised as runoff during rainfall, discharges into an open drainage ditch, which is then connected to a local stream. Breaking the pathway before runoff enters the open ditch could be a cheap and effective way of mitigating nutrient losses at these two locations.
{"title":"Spatial distribution of available phosphorus in surface road and trackway surface materials on a sheep farm in Ireland","authors":"Owen Fenton, Karen Daly, Pat Tuohy, John Cardiff, Simon Leach, Lungile Senteni Sifundza, John Murnane","doi":"10.3389/fenvs.2024.1457970","DOIUrl":"https://doi.org/10.3389/fenvs.2024.1457970","url":null,"abstract":"Farm roadway runoff is a high-risk source of pollution when connectivity with waters occurs. Nutrients in this runoff are dominated by fresh animal deposits, but recent dairy and beef farm studies showed that available phosphorus (P) accumulates in roadway surface material and can be lost in runoff. A current knowledge gap is to examine available P concentrations in unsealed roadway and trackway (non-maintained) network of a lowland sheep farm. The present study focused on a 45 ha farm stocked with 544 sheep in south-east Ireland. Ten locations were sampled along with the adjacent fields for available P (i.e., Morgan’s P) and ancillary parameters (e.g., pH, total P and heavy metals) in December 2022. The first sampling location was on an aggregate roadway and the other nine were on trackways representing an older aggregate roadway network used by the flock but now covered with soil and grass. Results showed a distinct difference in surface material pH between roadway and trackway locations. Trackways had a pH that mimicked adjacent fields around the agronomic optimum for grassland of ∼6.2. All sampling locations had elevated available P concentrations, ranging from 26.3 to 111.0 mg L<jats:sup>−1</jats:sup> (mean 62.8 mg L<jats:sup>−1</jats:sup>), similar to the spatial distribution for dairy farms but above those found at beef farms previously studied. The highest available P concentrations were found in roadway and trackway sections adjacent to the farmyard. Other elevated sampling areas were on trackways (87.3 or 97.7 mg P L<jats:sup>−1</jats:sup>) away from the farmyard where sheep are funnelled to pasture, stop to seek shade, urinate and defecate but do not graze. By contrast the average available P concentration for the surrounding fields was 8.4 mg L<jats:sup>−1</jats:sup> with a range of 2.7–15.9 mg L<jats:sup>−1</jats:sup>. Two sampling areas combine to create a critical source area where a high available P source becomes visibly mobilised as runoff during rainfall, discharges into an open drainage ditch, which is then connected to a local stream. Breaking the pathway before runoff enters the open ditch could be a cheap and effective way of mitigating nutrient losses at these two locations.","PeriodicalId":12460,"journal":{"name":"Frontiers in Environmental Science","volume":"3 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251183","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}
This systematic study on the international research trends in carbon neutrality underscores its critical role in combating global warming and advancing sustainable development. By leveraging the “Web of Science Core Collection” databases and employing CiteSpace software for visual analysis, we examined 2223 research papers to track the influence and trends of key countries, institutions, and authors. Our results reveal a significant increase in publication volume, indicating a robust development potential for carbon neutrality research. The study also identifies environmental science, environmental research, and energy and fuel science as central interdisciplinary hubs, highlighting the importance of cross-disciplinary collaboration. Notably, China leads in publication output but has room for improvement in citation impact, suggesting a need for enhanced research quality and international visibility. The study's findings are instrumental for guiding future research directions, policy-making, and interdisciplinary cooperation, particularly in the fields of environmental science and energy, to accelerate progress towards carbon neutrality and global climate governance.
{"title":"Carbon neutralization frontier tracking","authors":"Xiaoliang Shi, Jiayin Xin, Aruna Aria, Ji Lu, Tielong Wang, Xiaowei Xu, Yiwen Zhang","doi":"10.3389/fenvs.2024.1388746","DOIUrl":"https://doi.org/10.3389/fenvs.2024.1388746","url":null,"abstract":"This systematic study on the international research trends in carbon neutrality underscores its critical role in combating global warming and advancing sustainable development. By leveraging the “Web of Science Core Collection” databases and employing CiteSpace software for visual analysis, we examined 2223 research papers to track the influence and trends of key countries, institutions, and authors. Our results reveal a significant increase in publication volume, indicating a robust development potential for carbon neutrality research. The study also identifies environmental science, environmental research, and energy and fuel science as central interdisciplinary hubs, highlighting the importance of cross-disciplinary collaboration. Notably, China leads in publication output but has room for improvement in citation impact, suggesting a need for enhanced research quality and international visibility. The study's findings are instrumental for guiding future research directions, policy-making, and interdisciplinary cooperation, particularly in the fields of environmental science and energy, to accelerate progress towards carbon neutrality and global climate governance.","PeriodicalId":12460,"journal":{"name":"Frontiers in Environmental Science","volume":"20 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142268707","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}
Pub Date : 2024-09-18DOI: 10.3389/fenvs.2024.1471160
Xin Jiang, Xingfu Wang, Yi Liu, Yu Huang, Xianfei Huang
Karst areas are often characterized by fragile ecological systems, and environmental pollution has increased the pressures on people living in such regions. This study aimed to investigate the status of pollution caused by heavy metals (Pb, Cd, Hg, As, and Cu) in soils based on different land uses in Changshun County, a karst area in southwestern China. Soil samples were collected from natural forestlands (NFLs), natural brush lands (NBLs), natural pasture lands (NPLs), artificial forestlands (AFLs), artificial brush lands (ABLs), and artificial pasture lands (APLs) for evaluation. The results suggest that the soil profile characteristics of the heavy metals studied herein vary significantly among different land uses. The heavy metal concentrations in all soil samples collected from NFLs were lower than those in samples from other land uses. Forest trees can protect soil from heavy metal pollution caused by atmospheric deposition; this is especially true for Hg. In cultivated forestlands and brush lands, special attention should be devoted to Cd pollution in the soil, which may be caused by the use of fertilizers. Changing both natural and artificial pastoral lands to forestlands could benefit the local ecosystems as it may reduce Hg contamination.
{"title":"Heavy metal changes related to land use changes in a karst area: a case study in Changshun, Guizhou Province, China","authors":"Xin Jiang, Xingfu Wang, Yi Liu, Yu Huang, Xianfei Huang","doi":"10.3389/fenvs.2024.1471160","DOIUrl":"https://doi.org/10.3389/fenvs.2024.1471160","url":null,"abstract":"Karst areas are often characterized by fragile ecological systems, and environmental pollution has increased the pressures on people living in such regions. This study aimed to investigate the status of pollution caused by heavy metals (Pb, Cd, Hg, As, and Cu) in soils based on different land uses in Changshun County, a karst area in southwestern China. Soil samples were collected from natural forestlands (NFLs), natural brush lands (NBLs), natural pasture lands (NPLs), artificial forestlands (AFLs), artificial brush lands (ABLs), and artificial pasture lands (APLs) for evaluation. The results suggest that the soil profile characteristics of the heavy metals studied herein vary significantly among different land uses. The heavy metal concentrations in all soil samples collected from NFLs were lower than those in samples from other land uses. Forest trees can protect soil from heavy metal pollution caused by atmospheric deposition; this is especially true for Hg. In cultivated forestlands and brush lands, special attention should be devoted to Cd pollution in the soil, which may be caused by the use of fertilizers. Changing both natural and artificial pastoral lands to forestlands could benefit the local ecosystems as it may reduce Hg contamination.","PeriodicalId":12460,"journal":{"name":"Frontiers in Environmental Science","volume":"2 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251184","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}
Pub Date : 2024-09-18DOI: 10.3389/fenvs.2024.1450320
Wangming Liu, Huan Xu, Guowei He
Water transparency, as indicated by the Secchi disk depth (Zsd), is a key parameter for assessing the quality of aquatic environments, reflecting the ability of light to penetrate through the water column. In the Tibetan Plateau (TP), where lakes are abundant yet remote and challenging to access, remote sensing techniques offer a promising approach for monitoring Zsd over large spatial scales. In this study, we used the semianalytical -based Zsd algorithm to study the temporal and spatial dynamics of water transparency over TP during the period from 2003 to 2022. The results show that the 173 lakes have a mean value of Zsd is 3.64 ± 2.4 m for long term, and generally with the significantly increasing change trends in the past 20 years. In the central Tibetan Plateau (CTP) region, lake transparency showed a positive correlation with lake surface temperature (r = 0.73) and a negative correlation with precipitation (r = −0.54), highlighting the region’s heightened sensitivity to meteorological changes compared to other areas. The spike in water clarity observed in the CTP region may be linked to alterations in lake hydrodynamics driven by the extremely climate events (i.e., El Niño). These results indicated the importance of considering regional climatic factors when interpreting fluctuations in water transparency.
{"title":"Long-term trends in water transparency of Tibetan Plateau lakes and the response to extreme climate events","authors":"Wangming Liu, Huan Xu, Guowei He","doi":"10.3389/fenvs.2024.1450320","DOIUrl":"https://doi.org/10.3389/fenvs.2024.1450320","url":null,"abstract":"Water transparency, as indicated by the Secchi disk depth (Z<jats:sub>sd</jats:sub>), is a key parameter for assessing the quality of aquatic environments, reflecting the ability of light to penetrate through the water column. In the Tibetan Plateau (TP), where lakes are abundant yet remote and challenging to access, remote sensing techniques offer a promising approach for monitoring Z<jats:sub>sd</jats:sub> over large spatial scales. In this study, we used the semianalytical -based Z<jats:sub>sd</jats:sub> algorithm to study the temporal and spatial dynamics of water transparency over TP during the period from 2003 to 2022. The results show that the 173 lakes have a mean value of Z<jats:sub>sd</jats:sub> is 3.64 ± 2.4 m for long term, and generally with the significantly increasing change trends in the past 20 years. In the central Tibetan Plateau (CTP) region, lake transparency showed a positive correlation with lake surface temperature (r = 0.73) and a negative correlation with precipitation (r = −0.54), highlighting the region’s heightened sensitivity to meteorological changes compared to other areas. The spike in water clarity observed in the CTP region may be linked to alterations in lake hydrodynamics driven by the extremely climate events (i.e., El Niño). These results indicated the importance of considering regional climatic factors when interpreting fluctuations in water transparency.","PeriodicalId":12460,"journal":{"name":"Frontiers in Environmental Science","volume":"198 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251185","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}
Pub Date : 2024-09-13DOI: 10.3389/fenvs.2024.1455377
Qiqi Zhou, Hongfeng Chen, Guijian Liu, Xiaohui Wang
Emerging contaminants (ECs), such as polyfluorinated compounds, antibiotics, microplastics, and nonylphenol, continue to challenge environmental management practices due to their persistence and bioaccumulation potential. This review articulates the critical pathways and environmental risks posed by these contaminants, setting the stage for an in-depth exploration of innovative removal technologies. We spotlight groundbreaking methods that are reshaping the landscape of ECs remediation: membrane filtration technology, constructed wetlands, adsorptive materials, algae-based systems, biological treatments, and advanced oxidation processes. Each method is evaluated for its efficacy in removing ECs, with particular emphasis on sustainability and economic viability. Our findings reveal that integrating these technologies can significantly enhance removal efficiency, offering new directions for environmental policy and practical applications. This article positions these advanced removal technologies at the forefront of the fight against ECs, advocating for their broader adoption to safeguard environmental and public health.
{"title":"Occurrence, sustainable treatment technologies, potential sources, and future prospects of emerging pollutants in aquatic environments: a review","authors":"Qiqi Zhou, Hongfeng Chen, Guijian Liu, Xiaohui Wang","doi":"10.3389/fenvs.2024.1455377","DOIUrl":"https://doi.org/10.3389/fenvs.2024.1455377","url":null,"abstract":"Emerging contaminants (ECs), such as polyfluorinated compounds, antibiotics, microplastics, and nonylphenol, continue to challenge environmental management practices due to their persistence and bioaccumulation potential. This review articulates the critical pathways and environmental risks posed by these contaminants, setting the stage for an in-depth exploration of innovative removal technologies. We spotlight groundbreaking methods that are reshaping the landscape of ECs remediation: membrane filtration technology, constructed wetlands, adsorptive materials, algae-based systems, biological treatments, and advanced oxidation processes. Each method is evaluated for its efficacy in removing ECs, with particular emphasis on sustainability and economic viability. Our findings reveal that integrating these technologies can significantly enhance removal efficiency, offering new directions for environmental policy and practical applications. This article positions these advanced removal technologies at the forefront of the fight against ECs, advocating for their broader adoption to safeguard environmental and public health.","PeriodicalId":12460,"journal":{"name":"Frontiers in Environmental Science","volume":"165 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142250858","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}
Pub Date : 2024-09-13DOI: 10.3389/fenvs.2024.1463679
Xuxin Zou, Jiadi Min, Shuang Meng
Green development, as a key link in the philosophy of new development, is the only way to achieve sustainable development. However, how science and technology (S&T) finance affects green development remains unclear. Based on panel data of 284 cities in China from 2007 to 2020, the multi-time-point difference-in-differences (DID) model and the mediation model were utilized to analyze the influencing mechanisms and paths of the S&T financial pilot policy on green development. The results show that S&T financial policy can significantly promote green development, for which green innovation (GI) capability, industrial structure advancement (ISA), and industrial structure rationalization (ISR) are important paths. Moreover, the effects of S&T financial policy on green development are heterogeneous: the policy exerts a stronger effect on the central region than on the eastern and western regions, a stronger effect on large cities than on small- and medium-sized cities, and a stronger effect on key cities than on general cities. Therefore, relevant governmental departments should continually optimize S&T financial policy; pay more attention to cities in the western region, small- and medium-sized cities, and general cities; actively foster GI capability; facilitate industrial structure transformation and upgrading; and vigorously support cross-regional exchange and cooperation to jointly realize green development. This study sheds new light on how the S&T finance related policy reform promotes sustainable growth and socio-economic welfare in developing countries.
{"title":"The green development effect of science and technology financial policy in China","authors":"Xuxin Zou, Jiadi Min, Shuang Meng","doi":"10.3389/fenvs.2024.1463679","DOIUrl":"https://doi.org/10.3389/fenvs.2024.1463679","url":null,"abstract":"Green development, as a key link in the philosophy of new development, is the only way to achieve sustainable development. However, how science and technology (S&amp;T) finance affects green development remains unclear. Based on panel data of 284 cities in China from 2007 to 2020, the multi-time-point difference-in-differences (DID) model and the mediation model were utilized to analyze the influencing mechanisms and paths of the S&amp;T financial pilot policy on green development. The results show that S&amp;T financial policy can significantly promote green development, for which green innovation (GI) capability, industrial structure advancement (ISA), and industrial structure rationalization (ISR) are important paths. Moreover, the effects of S&amp;T financial policy on green development are heterogeneous: the policy exerts a stronger effect on the central region than on the eastern and western regions, a stronger effect on large cities than on small- and medium-sized cities, and a stronger effect on key cities than on general cities. Therefore, relevant governmental departments should continually optimize S&amp;T financial policy; pay more attention to cities in the western region, small- and medium-sized cities, and general cities; actively foster GI capability; facilitate industrial structure transformation and upgrading; and vigorously support cross-regional exchange and cooperation to jointly realize green development. This study sheds new light on how the S&amp;T finance related policy reform promotes sustainable growth and socio-economic welfare in developing countries.","PeriodicalId":12460,"journal":{"name":"Frontiers in Environmental Science","volume":"2 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251191","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}
Jilin Province is a crucial region of interest for agricultural and forestry development in China. The deterioration of its ecological environment could have a severe impact on agricultural production and ecological conservation. A systematic assessment of ecological environment quality in Jilin Province is essential for its sustainable development. In this study, we utilized Landsat data from 1990 to 2020 (every 5 years) to construct the Remote Sensing Ecological Index (RSEI) for Jilin Province. We applied the Sen’s slope estimator and the Mann-Kendall trend test to examine the spatiotemporal changes in ecological environment quality over a 30-year period. Additionally, we employed the Geo-detector to explore the socioeconomic and natural factors influencing ecological environment quality. The results revealed: 1) From 1990 to 2020, the average RSEI index in Jilin Province ranged from 0.586 to 0.699, indicating overall good ecological environment quality. Spatially, ecological environment quality gradually declined from east to west. 2) The RSEI in Jilin Province exhibited an initial increase, followed by a decrease, and then another increase trend. This improvement can be attributed to the implementation of government policies, which reversed the expansion of saline-alkali land. Ecological environment quality significantly improved in the western region of Jilin Province over the 30-year period. 3) Socioeconomic and natural factors both influence ecological environment quality in Jilin Province. Among these factors, vegetation coverage has the most significant impact on the ecological environment quality in the study area, with natural factors exerting a more significant influence than socioeconomic factors. Our research can provide relevant data support for policy-making in Jilin Province.
{"title":"Spatial-temporal variation and influencing factors of ecological environment quality in Jilin Province (China)","authors":"Feiyu Wang, Yang Han, Yaping Xu, Ruifei Zhu, Chunmei Qu, Peng Zhang, Stanton Martin, Lijuan Zhuang, Zhuxin Liu, Jiani Zhang, Fang Huang","doi":"10.3389/fenvs.2024.1446313","DOIUrl":"https://doi.org/10.3389/fenvs.2024.1446313","url":null,"abstract":"Jilin Province is a crucial region of interest for agricultural and forestry development in China. The deterioration of its ecological environment could have a severe impact on agricultural production and ecological conservation. A systematic assessment of ecological environment quality in Jilin Province is essential for its sustainable development. In this study, we utilized Landsat data from 1990 to 2020 (every 5 years) to construct the Remote Sensing Ecological Index (RSEI) for Jilin Province. We applied the Sen’s slope estimator and the Mann-Kendall trend test to examine the spatiotemporal changes in ecological environment quality over a 30-year period. Additionally, we employed the Geo-detector to explore the socioeconomic and natural factors influencing ecological environment quality. The results revealed: 1) From 1990 to 2020, the average RSEI index in Jilin Province ranged from 0.586 to 0.699, indicating overall good ecological environment quality. Spatially, ecological environment quality gradually declined from east to west. 2) The RSEI in Jilin Province exhibited an initial increase, followed by a decrease, and then another increase trend. This improvement can be attributed to the implementation of government policies, which reversed the expansion of saline-alkali land. Ecological environment quality significantly improved in the western region of Jilin Province over the 30-year period. 3) Socioeconomic and natural factors both influence ecological environment quality in Jilin Province. Among these factors, vegetation coverage has the most significant impact on the ecological environment quality in the study area, with natural factors exerting a more significant influence than socioeconomic factors. Our research can provide relevant data support for policy-making in Jilin Province.","PeriodicalId":12460,"journal":{"name":"Frontiers in Environmental Science","volume":"8 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251187","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}
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