Environmental Research最新文献

{"title":"Rainstorms drive the carbon dioxide emissions during the algae-growing season in a large eutrophic lake.","authors":"Qirui Wang, Feng Zhao, Jiaqi Wang, Zhao Huang, Yuexia Guo, Shaoda Liu, Qianggong Zhang, Wei He, Yindong Tong","doi":"10.1016/j.envres.2024.120567","DOIUrl":"10.1016/j.envres.2024.120567","url":null,"abstract":"<p><p>Lakes are sources of atmospheric carbon dioxide (CO₂), contributing to global climate change. Temporal variations in lake CO₂ emissions are pronounced, with algal growth and precipitation identified as important drivers. Eutrophic lakes often act as atmospheric CO₂ sinks during the growing season. However, these lakes can also emit CO₂ during the same period, a paradox that we hypothesize is driven by precipitation. This study tests this hypothesis and examines how rainstorms influence lake CO₂ emissions. To investigate, seven buoys were deployed in eutrophic Lake Taihu and a major inflow river to monitor water quality at 4-h intervals throughout 2021. CO₂ flux (FCO₂) was calculated using integrated methods, including gas diffusion models, the CO2calc program, and machine learning algorithms, based on water quality and meteorological data. Results revealed that only rainstorms (daily rainfall >50 mm) significantly increased FCO₂. Although only three rainstorm events occurred, they accounted for 12.15% of the annual CO₂ emissions. During the growing season, the lake was a net CO₂ source, but without rainstorm-induced emissions, it would have functioned as a CO₂ sink, highlighting the crucial role of rainstorms in shifting lake dynamics. Piecewise structural equation modeling indicated that both abiotic factors (e.g., gas transfer velocity) and biotic factors (e.g., aquatic metabolism) influenced by rainstorms contributed to the elevated FCO₂. These findings suggest that future reductions in lake FCO₂ due to eutrophication, combined with more frequent rainstorms under climate change, could amplify the impact of extreme precipitation on CO₂ emissions.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"120567"},"PeriodicalIF":7.7,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793975","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":"Toxicological interactions of cosmetic and personal care additives mixtures: An update based on measurement and simulation.","authors":"Yu-Ting Yang, Zi-Yi Zheng, Xing-Peng Wei, Yuan Meng, Jing-Xuan Zhou, Si-Yu Li, Wang-Bo Yuan, Hong-Gang Ni","doi":"10.1016/j.envres.2024.120566","DOIUrl":"10.1016/j.envres.2024.120566","url":null,"abstract":"<p><p>The toxicity of chemical mixtures may be misestimated, as the assessment of individual chemicals may not adequately reflect their combined toxic effects. However, numerous combinations of chemicals and various interactions make it impossible to measure all possible mixtures. Computational toxicology can help to mitigate this issue, particularly with new methodologies that rely upon alternatives to animal testing. For cosmetic and personal care additives (CPCAs), the ever-increasing of consumption has triggered their complex co-existence in the aquatic environment. To assess their ecological risks, CPCAs experimentally mix at realistic low concentrations with multi-components and different combinations needs to be examined firstly. In this study, toxicity and interactions of multi-component CPCAs mixtures were analyzed taking Daphnia magna as model organism. Also, the contributions of components to the mixture toxicity at different effect levels were discussed. Apparently, the mixture toxicity is closely related to components proportion and impacted by dilution effect. Different forms of combined toxic effects occur in different effect levels. The more components, the less interactions, and the combined toxic effect tends to be additive. Then, Quantitative Structure-Activity Relationship (QSAR) models were developed and evaluated to predict the aquatic toxicity of CPCAs mixtures at various effect levels. The model performance at the median effect level is the best. The descriptors associated most to the toxicity response of CPCA multi-component mixtures are autocorrelation and radial distribution function (RDF), which provide structural information about the spatial distribution of electronic properties and atomic mass.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"120566"},"PeriodicalIF":7.7,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142794007","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":"Influence of biodegradable microplastics on soil carbon cycling: Insights from soil respiration, enzyme activity, carbon use efficiency and microbial community.","authors":"Dan Song, Guoqin Jin, Ziqi Su, Chaorong Ge, Haoxin Fan, Huaiying Yao","doi":"10.1016/j.envres.2024.120558","DOIUrl":"10.1016/j.envres.2024.120558","url":null,"abstract":"<p><p>The rising prevalence of biodegradable microplastics (BMPs) in soils has raised concerns about their impacts on soil ecosystems and carbon cycling. This study investigates the effects of different BMPs on soil carbon cycling, focusing on soil respiration, enzyme activities, and carbon use efficiency (CUE) from ¹³C-labeled dissolved organic carbon (DOC) in an upland soil. The BMPs tested were polybutylene adipate terephthalate (PBAT), polyhydroxyalkanoates (PHA), and polylactic acid (PLA), at high (H, 1% w/w) and low (L, 0.1% w/w) concentrations. Over a 64-day incubation, cumulative CO₂ emissions increased in the PHA_L, PHA_H, and PLA_H treatments, with the highest rise of 665% PHA_H treatment. Microbial biomass carbon (MBC) ranged from 97.73 ± 3.03 mg C kg⁻¹ in the control to 223.09 ± 7.91 mg C kg⁻¹ in PHA_H, with microbial CUE peaking at 0.26 in PHA_H. Enzymatic activities were notably affected: β-glucosidase (BG) increased by 50% in PLA_H, while cellobiohydrolase (CBH) activity decreased by up to 62% in PBAT_H and PLA_L. N-acetylglucosaminidase (NAG) and phosphatase (AP) activities were highest in PHA_H, indicating enhanced nutrient cycling. Microbial community structure based on PLFAs was significantly altered, with total PLFA content increasing by 191% in PHA_H. Correlation analysis and partial least squares path modeling (PLS-PM) revealed that BMP concentration, DOC content, and microbial diversity were positively correlated with microbial CUE. This study highlights the significant role of BMPs in influencing soil carbon cycling, primarily through their effects on microbial diversity and soil enzyme activities.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"120558"},"PeriodicalIF":7.7,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790611","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":"Associations between per- and polyfluoroalkyl substances (PFAS) and female sexual function in a preconception cohort.","authors":"Samantha Schildroth, Julia C Bond, Amelia K Wesselink, Jasmine Abrams, Antonia M Calafat, Julianne Cook Botelho, Katharine O White, Ganesa Wegienka, Elizabeth E Hatch, Lauren A Wise","doi":"10.1016/j.envres.2024.120556","DOIUrl":"10.1016/j.envres.2024.120556","url":null,"abstract":"<p><strong>Background: </strong>Female sexual function is important for sexual well-being, general health, fertility, and relationship satisfaction. Distressing impairments in sexual function, clinically recognized as female sexual dysfunction (FSD), can manifest as issues with interest/desire, arousal, orgasm, and pain during vaginal penetration. Some evidence suggests that exposure to endocrine-disrupting chemicals may adversely affect female sexual function, but associations for per- and polyfluoroalkyl substances (PFAS) have not been previously evaluated.</p><p><strong>Objective: </strong>We investigated associations between serum PFAS concentrations and female sexual function among U.S. pregnancy planners.</p><p><strong>Methods: </strong>We used cross-sectional data from participants from Pregnancy Study Online (PRESTO), a prospective preconception cohort study. Participants reported sexual function and distress at baseline on two validated measures: a modified version of the Female Sexual Function Index-6 (FSFI-6) and the Female Sexual Distress Scale (FSDS). We quantified PFAS serum concentrations in samples collected in the preconception period (i.e., at baseline) using solid phase extraction-high performance liquid chromatography-isotope-dilution-mass spectrometry. Participants reported sociodemographic information on structured baseline questionnaires. We included 78 participants with complete PFAS and sexual function data and fit multivariable linear regression models to estimate mean differences in FSFI-6 scores (β) or percent differences (%) in FSDS scores per interquartile range (IQR) increase in PFAS concentrations, adjusting for age, annual household income, years of education, parity, and body mass index. We further investigated effect measure modification by parity (parous vs. nulliparous) in stratified models.</p><p><strong>Results: </strong>An IQR increase in perfluorohexanesulfonic acid was associated with a 1.0-point decrease (95% CI = -1.8, -0.1) in reported FSFI-6 scores, reflecting poorer sexual function. PFAS were consistently associated with lower FSFI-6 scores among parous participants. PFAS were also associated, though imprecisely, with greater sexual distress.</p><p><strong>Conclusion: </strong>Some PFAS were associated with poorer sexual function among U.S. pregnancy planners, but future studies are needed to clarify the extent to which PFAS influences female sexual health.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"120556"},"PeriodicalIF":7.7,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790661","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":"Distribution characteristics, source analysis and ecological risk assessment of PAHs in tea garden soil in China.","authors":"Jinzhi Li, Jiantao Xue, Yan Tan, Mingmin Jia, Junjun Feng, Xueqing Feng, Ningguo Zheng, Haoxin Fan, Huaiying Yao","doi":"10.1016/j.envres.2024.120559","DOIUrl":"10.1016/j.envres.2024.120559","url":null,"abstract":"<p><p>In this study, we collected 177 soil samples from major tea-producing areas in China, systematically investigated the spatial distribution characteristics of the polycyclic aromatic hydrocarbons (PAHs) in the soil of these tea plantations and discussed the environmental factors influencing of the PAHs in tea garden soil. The feature ratio method and source analysis methods were used to determine the PAHs source in tea garden soil, and the potential risk of PAHs in tea garden soil was also evaluated. The results showed that the concentrations of the 16 PAHs in 177 samples ranged from 6.21 to 4068.91 ng g^-1, with an average of 257.00 ng g^-1. The majority of PHAs in tea garden soils predominantly contained a 5-6 ring pattern, and the highest content was indeno (1,2,3-cd) pyrene (InP, 23%) and benzo (b) fluoranthrene (BbF, 16%). In addition, 10.16% of the PAHs in tea plantation soils contained a 2-3-ring pattern, with naphthalene (NAP) having the highest content. PAH source in Chinese tea garden soil was predominantly mixed combustion, such as incomplete biomass combustion, petroleum combustion, coal combustion and wood combustion. The PAHs distribution was mainly affected by the industrial structure, geographical location of tea plantation, climatic conditions, soil properties and other factors in different regions. According to the Dutch Maliszewska-Kordybach grading standard, 79% of the soil samples from Chinese tea plantations were classified as unpolluted, 13% as mildly polluted, and 2% and 6% as moderately and severely polluted, respectively. Although the PAH pollution in tea plantations was generally low, BaP and InP pose significant ecological risk in some areas. Therefore, strategies such as effective guidelines and environmentally friendly technologies, must be developed to reduce the risk of PAH pollution in tea plantation soils.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"120559"},"PeriodicalIF":7.7,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790674","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":"Efficient tetracycline hydrochloride degradation via peroxymonosulfate activation by N doped coagulated sludge based biochar: Insights on the nonradical pathway.","authors":"Min Yang, Wenyu Wang, Huifang Ma, Lei Chen, Hongfang Ma, Feng Shi","doi":"10.1016/j.envres.2024.120554","DOIUrl":"10.1016/j.envres.2024.120554","url":null,"abstract":"<p><p>Coagulation could effectively remove microplastics (MPs). However, MPs coagulated sludge was still a hazardous waste that is difficult to degrade. Nitrogen-doped carbon composite (N-PSMPC) was prepared by carbonizing MPs coagulated aluminum sludge (MP-CA) doped with cheap urea in this study. Compared with the carbon material (PSMPC) produced by direct carbonization of MP-CA, N-PSMPC had a higher degree of defects, which could provide more active sites for peroxymonosulfate (PMS) activation. And then, the N-PSMPC was applied to the degradation of tetracycline hydrochloride (TC). The results showed that the N-PSMPC/PMS system exhibited excellent TC degradation performance at the pH range of 3-9, and the coexistence of CO₃^2- and HCO₃^- inhibited the TC degradation. Moreover, the graphite N, pyridine N and carbonyl group were identified as the primary catalytic active sites. Three TC degradation pathways were speculated based on the intermediates detected by liquid chromatography-mass spectrometry, and the degradation mechanism was dominated by the nonradical pathway. In addition, the analysis of TC and intermediates by toxicity assessment software showed that N-PSMPC/PMS system could mitigate the TC toxicity. This study will provide a novel approach for the resourceful utilization of MP-CA and provide technical support for the removal of MPs and TC in water.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"120554"},"PeriodicalIF":7.7,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790635","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":"Association of early life exposure to PM_2.5 and its components with offspring neurodevelopment: A prospective birth cohort study.","authors":"Yuchuan Deng, Xiaoxu Li, Xiuxiu Li, Xuemei Liu, Lizi Lin, Li Cai, Min Zhang","doi":"10.1016/j.envres.2024.120552","DOIUrl":"10.1016/j.envres.2024.120552","url":null,"abstract":"<p><p>Emerging data have explored early life fine particulate (PM_2.5) exposure and its relationship with offspring neurodevelopment. However, the findings remain inconsistent, and the roles of specific PM_2.5 components are unclear. We investigated these associations and explored the potential interactive role of children's physical activity (PA). A total of 1547 mother-child pairs from the Shenzhen Birth Cohort were included. Neurodevelopment was assessed at seven time points (1, 3, 6, 8, 12, 18, and 24 months) using the Ages and Stages Questionnaire. An established spatiotemporal model was used to estimate early life exposure to PM_2.5 and five components [sulfate (SO₄²), nitrate (NO₃^-), ammonium (NH₄⁺), organic matter (OM), and black carbon (BC)]. Associations of individual and joint exposure to components with neurodevelopment were analyzed using generalized estimating equation and quantile-based g-computation models with a binomial distribution. Most mothers (79.1%) were under 35 at delivery, and 43.6% of the children were boys. During the early postnatal period, a 5 μg/m³ increase in PM_2.5 was associated with higher adjusted odds ratios (aORs) for developmental delays in gross motor (1.24, 95%CI:1.12, 1.37), fine motor (1.11, 95%CI:1.04, 1.20), and problem-solving (1.12, 95%CI:1.03, 1.22) domains. Similar associations were observed for individual PM_2.5 components. Each quintile increase in early postnatal exposure to PM_2.5 mixtures was correlated with higher aORs for these domains, with NO₃^- constituting the largest weight. No significant associations were found for the prenatal period. The children's PA showed no interaction. These findings underscore the need to reduce PM_2.5 exposure, particularly its toxic components, to minimize developmental risks.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"120552"},"PeriodicalIF":7.7,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790655","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":"Removal pathways and mechanism of NO by Tetradesmus obliquus PF3 culture-based DeNOx system.","authors":"Shanshan Ma, Yanling Yu, Hao Cui, Yujie Feng, Junyu You, Jing Li","doi":"10.1016/j.envres.2024.120538","DOIUrl":"10.1016/j.envres.2024.120538","url":null,"abstract":"<p><p>Microalgae-based DeNOx technology, as an emerging approach for flue gas denitrification, is suitable for the deep treatment of NOx at medium to low concentrations. To address the ambiguity surrounding the removal pathways and mechanisms in the development of microalgae DeNOx technology, the pathways and mechanisms of NO removal within a microalgae cultivation system was investigated. By investigating the gas-liquid and liquid-solid nitrogen transfer pathways facilitated by algal cells, algal cells were found to play a pivotal role in NO removal by the T. obliquus PF3 cultivation system. Microalgae cells enhance NO transfer across gas-liquid phases via extracellular substance secretion, exogenous iron reduction, NO adsorption, and NO molecular absorption. During this process, NO is transformed in the liquid phase into molecular NO, ionic nitrate, and nitrite, as well as organically complexed NO. The soluble extracellular substances of T. obliquus PF3 are primarily composed of humic-like acids and fulvic-like acids, while bound extracellular substances are dominated by tryptophan and tryptophan-like proteins, both of which possess reductive properties conducive to iron reduction and NO adsorption/complexation. By employing ATP hydrolysis inhibitor HgCl₂ and analyzing nitrogen balance in the system, It was revealed that the primary NO removal pathway involves NO dissolution and oxidation within the algal culture broth, with ionic nitrogen being the predominant form assimilated and utilized by algal cells from the solution. This study clarifies the NO removal pathways and mechanisms within the microalgae cultivation system, thereby providing a theoretical foundation for the advancement and process design of microalgae-based DeNOx technology.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"120538"},"PeriodicalIF":7.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790702","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":"Heat wave exposure during pregnancy and neurodevelopmental delay in young children: A birth cohort study.","authors":"Qingmei Lin, Yonggui Gao, Yuewei Liu, Saijun Huang, Yang Su, Weidong Luo, Chunxiang Shi, Yin Yang, Hualiang Lin, Xi Su, Zilong Zhang","doi":"10.1016/j.envres.2024.120541","DOIUrl":"https://doi.org/10.1016/j.envres.2024.120541","url":null,"abstract":"<p><strong>Introduction: </strong>Gestation is a critical period for fetal brain development, and extreme heat exposure during this stage may have adverse impact on neurodevelopment in children. However, current evidence is scarce.</p><p><strong>Methods: </strong>We examined the associations between maternal exposure to heat wave during pregnancy and neurodevelopmental delay in young children in a birth cohort study of 67,453 child-mother pairs from Foshan, China. Specifically, temperature data (spatial resolution: 0.0625° × 0.0625°) were assigned to study participants based on residential addresses. Then, heat wave events were defined by combining the intensity (temperature thresholds: ≥90th, 92.5th or 95th percentile) and duration (number of consecutive days: 2, 3 or 4 days). Neurodevelopmental status was assessed using a five-domain scale by trained medical professionals. Logistic regression was used to investigate the associations between gestational heat wave exposure and neurodevelopmental delay in children.</p><p><strong>Results: </strong>We found that exposure to heat wave during early and late pregnancy was associated with increased risks of neurodevelopmental delay in children. By contrast, the results for mid-pregnancy heat wave exposure were mixed. The observed associations remained stable in a group of sensitivity analyses.</p><p><strong>Conclusions: </strong>Our study adds some suggestive evidence that prenatal exposure to heat wave may have detrimental impact on children's neurodevelopment. More investigations are needed to verify our findings.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"266 ","pages":"120541"},"PeriodicalIF":7.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790704","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":"Greenhouse gas emissions and mitigation strategies in China's municipal solid waste sector under the impact of the COVID-19 pandemic.","authors":"Yuan Liu, Rui Li, Weiguang Cai, Qiqi Liu","doi":"10.1016/j.envres.2024.120497","DOIUrl":"10.1016/j.envres.2024.120497","url":null,"abstract":"<p><p>With the continuous increase in municipal solid waste (MSW) generation, greenhouse gas (GHG) emissions caused by MSW treatment have gradually become an important environmental concern. This study developed a comprehensive ten-factor analysis framework using the generalized Divisia index method (GDIM) to decompose the driving factors of GHG emissions from MSW sectors in China and its 31 provinces from 2010 to 2022, including population, economy, consumption, and waste generation. The heterogeneity of factor contributions was discussed from both temporal and spatial perspectives to propose mitigation strategies for provincial MSW sectors. The results indicated the following: (1) GHG emissions from the MSW sector increased from 2010 to 2019, followed by a 20.7% decrease from 2019 to 2022 due to the COVID-19 pandemic. Regionally, emissions were greater in the eastern provinces than in the central and western provinces. (2) The main positive contributors to the increase in GHG emissions were the consumption expenditure of urban households (HCE, 27.61 MtCO₂e) and GDP (25.71 MtCO₂e). GHG emissions per HCE (-27.31 MtCO₂e) and GHG emissions per GDP (-25.45 MtCO₂e) were the main factors for emission reduction. (3) The contributions of ten driving factors to each province varied significantly across different periods, with the negative effect of emission reduction factors increasing under the impact of the pandemic. The findings of this study can support policymakers in developing differentiated mitigation strategies at the provincial level to promote the sustainable transformation of waste management in China.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"120497"},"PeriodicalIF":7.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142783588","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}