环境科学与技术最新文献_第6页

The Influence of Wildfire Smoke on Ambient PM2.5 Chemical Species Concentrations in the Contiguous US

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-02-03 DOI: 10.1021/acs.est.4c09011

Emma Krasovich Southworth, Minghao Qiu, Carlos F. Gould, Ayako Kawano, Jeff Wen, Sam Heft-Neal, Kara Kilpatrick Voss, Alandra Lopez, Scott Fendorf, Jennifer Anne Burney, Marshall Burke

{"title":"The Influence of Wildfire Smoke on Ambient PM2.5 Chemical Species Concentrations in the Contiguous US","authors":"Emma Krasovich Southworth, Minghao Qiu, Carlos F. Gould, Ayako Kawano, Jeff Wen, Sam Heft-Neal, Kara Kilpatrick Voss, Alandra Lopez, Scott Fendorf, Jennifer Anne Burney, Marshall Burke","doi":"10.1021/acs.est.4c09011","DOIUrl":"https://doi.org/10.1021/acs.est.4c09011","url":null,"abstract":"Wildfires significantly contribute to ambient air pollution, yet our understanding of how wildfire smoke influences specific chemicals and their resulting concentration in smoke remains incomplete. We combine 15 years of daily species-specific PM2.5 concentrations from 700 air pollution monitors with satellite-derived ambient wildfire smoke PM2.5, and use a panel regression to estimate wildfire smoke’s contribution to the concentrations of 27 different chemical species in PM2.5. Wildfire smoke drives detectable increases in the concentration of 25 out of the 27 species with the largest increases observed for organic carbon, elemental carbon, and potassium. We find that smoke originating from wildfires that burned structures had higher concentrations of copper, lead, zinc, and nickel relative to smoke from fires that did not burn structures. Wildfire smoke is responsible for an increasing share of ambient concentrations of multiple species, some of which are particularly harmful to health. Using a risk assessment approach, we find that wildfire-induced enhancement of carcinogenic species concentrations could cause increases in population cancer risk, but these increases are very small relative to other environmental risks. We demonstrate how combining ground-monitored and satellite-derived data can be used to measure wildfire smoke’s influence on chemical concentrations and estimate population exposures at large scales.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"62 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143084173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unexpectedly High Levels of H2O2 Drive Sulfate Formation over the Residual Layer in Beijing

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-02-02 DOI: 10.1021/acs.est.4c09004

Pengfei Liu, Shuyuan Jia, Shuying Li, Pengkun Ma, Yongjing Ma, Yuan Liu, Zhiheng Liao, Yonghong Wang, Biwu Chu, Qingxin Ma, Jiannong Quan, Yujing Mu, Hong He

{"title":"Unexpectedly High Levels of H2O2 Drive Sulfate Formation over the Residual Layer in Beijing","authors":"Pengfei Liu, Shuyuan Jia, Shuying Li, Pengkun Ma, Yongjing Ma, Yuan Liu, Zhiheng Liao, Yonghong Wang, Biwu Chu, Qingxin Ma, Jiannong Quan, Yujing Mu, Hong He","doi":"10.1021/acs.est.4c09004","DOIUrl":"https://doi.org/10.1021/acs.est.4c09004","url":null,"abstract":"Hydrogen peroxide (H2O2) plays a key role in atmospheric chemistry, but knowledge of its variation, sources, and impact on sulfate formation remains incomplete, especially in the urban boundary layer aloft. Here, we conducted a field campaign with measurements of H2O2 and related species at a tower-based site (∼528 m above the ground surface) of Beijing in spring of 2022. The observed hourly H2O2 concentration reached up to 21.2 ppbv with an average value of 3.4 ± 3.7 ppbv during the entire observation period, which was higher than values from previous observations throughout the world. The H2O2 budget revealed that the two known sources (self-reaction of HO2 radicals and ozonolysis of alkenes) could not account for the significant formation of H2O2, leading to a considerable unknown source strength (∼0.14–0.53 ppbv h–1) of H2O2 at noon and after sunset. Based on the levoglucosan signal, distribution of fire points, and backward trajectories, biomass burning emissions from the southwest of Beijing (e.g., North China Plain) were found to contribute greatly to H2O2 formation. Besides, photochemical aging of PM2.5 might also have a potential impact on H2O2 production at noon. The unexpectedly high concentrations of H2O2 aloft made a vital contribution to sulfate production (0.2–1.1 μg m–3 h–1), which could be transported to the ground surface during the turbulent mixing. Our findings provide an improved understanding of the H2O2 chemistry in the boundary layer aloft in a megacity, as well as its impact on sulfate formation.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"12 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143076961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Global Atmospheric Composition Effects from Marine Isoprene Emissions

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-02-02 DOI: 10.1021/acs.est.4c10657

Wentai Zhang, James Weber, Alex T. Archibald, Nathan Luke Abraham, Dennis Booge, Mingxi Yang, Dasa Gu

{"title":"Global Atmospheric Composition Effects from Marine Isoprene Emissions","authors":"Wentai Zhang, James Weber, Alex T. Archibald, Nathan Luke Abraham, Dennis Booge, Mingxi Yang, Dasa Gu","doi":"10.1021/acs.est.4c10657","DOIUrl":"https://doi.org/10.1021/acs.est.4c10657","url":null,"abstract":"Isoprene emissions, primarily of biogenic origin, play an important role in atmospheric chemistry and climate. However, the atmospheric implications of marine isoprene emissions remain underexplored due to sparse in situ measurements and the intricate mechanisms governing isoprene in the upper ocean. This study uses 20 years of MODIS satellite observations to upscale isoprene production and loss rates derived from laboratory experiments, enabling global modeling of aqueous isoprene concentrations and emissions. Earth system model simulations with integrated marine isoprene emissions demonstrate substantial alterations in atmospheric composition over global oceanic regions. Our investigation uncovers diurnal variations in the vertical profiles of atmospheric isoprene, indicating that surface isoprene can ascend to the mid-to-upper troposphere, where nitrogen monoxide (NO) influences isoprene epoxydiol (IEPOX) production differently over selected oceanic and terrestrial regions. These findings pave the way for future studies on the role of marine isoprene in climate models and advance our understanding of its broader implications for atmospheric chemistry under a changing climate.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"22 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143076962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinetics and Mechanisms of Solar UVB Disinfection of Vesicle-Cloaked Murine Norovirus Clusters and Free Noroviruses

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-02-02 DOI: 10.1021/acs.est.4c12583

Jiahao Chen, Monika Madhiyan, Kyle J. Moor, Hanning Chen, Danmeng Shuai

{"title":"Kinetics and Mechanisms of Solar UVB Disinfection of Vesicle-Cloaked Murine Norovirus Clusters and Free Noroviruses","authors":"Jiahao Chen, Monika Madhiyan, Kyle J. Moor, Hanning Chen, Danmeng Shuai","doi":"10.1021/acs.est.4c12583","DOIUrl":"https://doi.org/10.1021/acs.est.4c12583","url":null,"abstract":"Human norovirus, a major global cause of gastroenteritis, forms vesicle-cloaked virus clusters (known as viral vesicles), showing increased infectivity and persistence in aquatic environments. We investigated UVB disinfection, a key mechanism of solar disinfection commonly employed in developing countries, targeting murine norovirus vesicles and free murine noroviruses as surrogates for human noroviruses. At low viral concentrations of 109 gene copies per liter, viral infectivity loss as quantified by the integrated cell culture-reverse transcription-quantitative polymerase chain reaction (ICC-RT-qPCR) indicated that vesicles were 1.51 to 1.73 times more resistant to disinfection compared to free viruses. Virus inactivation was primarily due to protein damage as quantified by bicinchoninic acid and Western blot assays, and the damage of virus binding to host cells as quantified by RT-qPCR. Molecular simulations predicted that the oxidation of a tyrosine residue in the viral protein 1 prohibited binding. UVB irradiation of viral/vesicle proteins resulted in 1O2 formation as quantified by time-resolved phosphorescence, and for the first time, endogenous 1O2 was confirmed to contribute to virus inactivation by UVB. Our study recognizes the limitation of UVB disinfection of viral vesicles particularly in solar wastewater treatment and advocates for enhanced disinfection strategies to protect public health.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"27 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143076964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantification of Viruses in Wastewater on a Centrifugal Microfluidic Disc

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-02-02 DOI: 10.1021/acs.est.4c13718

Yen-Hsiang Huang, Sunny Jiang

{"title":"Quantification of Viruses in Wastewater on a Centrifugal Microfluidic Disc","authors":"Yen-Hsiang Huang, Sunny Jiang","doi":"10.1021/acs.est.4c13718","DOIUrl":"https://doi.org/10.1021/acs.est.4c13718","url":null,"abstract":"Rapid and onsite detection of pathogens in water is a critical first step in preventing the spread of infectious diseases from the environment to humans. However, current microbial monitoring practices are tedious, expensive, and slow. These limitations significantly impede our ability to promptly identify potential risks to public health, leading to delays in implementing the necessary interventions. In this study, we report the development of a portable centrifugal microfluidic disc (CD) that integrates sample concentration, purification, and a droplet digital reverse transcription LAMP (ddRT-LAMP) assay as a lab-on-a-chip system for rapid virus detection in the environment. Coupled with the pseudo- and nonpseudo forces generated during the CD rotation or oscillation, the assay steps for sample purification, concentration, and quantification were completed in less than 1.5 h. The results showed that the on-CD sample preparation procedures are comparable to the traditional in-tube sample preparation assay. Furthermore, the indigenous pepper mild mottle virus (PMMoV) in raw sewage at concentrations ranging from 6.0 × 104 to 2.1 × 107 copies/ml was successfully quantified using the complete on-CD assay, which includes on-CD sample preparation procedures and on-CD ddRT-LAMP. The concentrations of PMMoV detected by the CD assay matched well with those detected by the state-of-the-art virus nucleic acid extraction and ddRT-PCR assay for wastewater and wastewater-spiked environmental water samples, demonstrating the potential of this CD platform for environmental applications.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"38 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143076965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ice Nucleation Abilities and Chemical Characteristics of Laboratory-Generated and Aged Biomass Burning Aerosols

IF 10.8 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-02-02 DOI: 10.1021/acs.est.4c0494110.1021/acs.est.4c04941

Jie Chen*, Fähndrich Martin Othmar Jakob, Aristeidis Voliotis, Huihui Wu, Sara Aisyah Syafira, Osayomwanbor Oghama, Nadia Shardt, Nicolas Fauré, Xiangrui Kong, Gordon Mcfiggans and Zamin A. Kanji*,

{"title":"Ice Nucleation Abilities and Chemical Characteristics of Laboratory-Generated and Aged Biomass Burning Aerosols","authors":"Jie Chen*, Fähndrich Martin Othmar Jakob, Aristeidis Voliotis, Huihui Wu, Sara Aisyah Syafira, Osayomwanbor Oghama, Nadia Shardt, Nicolas Fauré, Xiangrui Kong, Gordon Mcfiggans and Zamin A. Kanji*, ","doi":"10.1021/acs.est.4c0494110.1021/acs.est.4c04941","DOIUrl":"https://doi.org/10.1021/acs.est.4c04941https://doi.org/10.1021/acs.est.4c04941","url":null,"abstract":"Biomass burning aerosol (BBA) contributes significantly to the global aerosol burden, yet its chemical nature and ice nucleation activities (INAs) are unconstrained due to the heterogeneity in biomass sources and complex evolution of atmospheric aging processes. This study comprehensively investigates the chemical composition and INA of BBA generated through laboratory-controlled burns with different biomasses and burning conditions. Both freshly emitted and photochemically aged BBA produced from different processes exhibit distinct and reproducible chemical compositions. However, the INA of BBA shows substantial variability at mixed-phase cloud temperatures and cannot be predicted by the chemical variability of the enriched carbonaceous materials. This indicates the negligible role of carbonaceous materials in determining the INA of BBA. Using laboratory data, we further evaluate the impact of BBA on atmospheric ice nucleation using particulate matter mass concentration and particle equivalent spherical radius. The estimated ice nucleating particle (INP) concentrations contributed by laboratory-produced BBA are lower than those observed during BBA pollution in field studies. This discrepancy is likely attributed to co-lofted mineral particles during real-world biomass burning, such as ash or soil particles, rather than carbonaceous-rich particles from combustion. We encourage further research to quantify the contribution of mineral particles to the INP concentrations of BBA.This study explores the physicochemical nature and ice nucleation activities of freshly emitted and photochemically aged biomass burning aerosol, thereby providing insights into its role in aerosol–cloud interactions.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"59 5","pages":"2575–2586 2575–2586"},"PeriodicalIF":10.8,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.est.4c04941","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}

引用次数: 0

Kinetics and Mechanisms of Solar UVB Disinfection of Vesicle-Cloaked Murine Norovirus Clusters and Free Noroviruses

IF 10.8 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-02-02 DOI: 10.1021/acs.est.4c1258310.1021/acs.est.4c12583

Jiahao Chen, Monika Madhiyan, Kyle J. Moor, Hanning Chen* and Danmeng Shuai*,

{"title":"Kinetics and Mechanisms of Solar UVB Disinfection of Vesicle-Cloaked Murine Norovirus Clusters and Free Noroviruses","authors":"Jiahao Chen, Monika Madhiyan, Kyle J. Moor, Hanning Chen* and Danmeng Shuai*, ","doi":"10.1021/acs.est.4c1258310.1021/acs.est.4c12583","DOIUrl":"https://doi.org/10.1021/acs.est.4c12583https://doi.org/10.1021/acs.est.4c12583","url":null,"abstract":"Human norovirus, a major global cause of gastroenteritis, forms vesicle-cloaked virus clusters (known as viral vesicles), showing increased infectivity and persistence in aquatic environments. We investigated UVB disinfection, a key mechanism of solar disinfection commonly employed in developing countries, targeting murine norovirus vesicles and free murine noroviruses as surrogates for human noroviruses. At low viral concentrations of 109 gene copies per liter, viral infectivity loss as quantified by the integrated cell culture-reverse transcription-quantitative polymerase chain reaction (ICC-RT-qPCR) indicated that vesicles were 1.51 to 1.73 times more resistant to disinfection compared to free viruses. Virus inactivation was primarily due to protein damage as quantified by bicinchoninic acid and Western blot assays, and the damage of virus binding to host cells as quantified by RT-qPCR. Molecular simulations predicted that the oxidation of a tyrosine residue in the viral protein 1 prohibited binding. UVB irradiation of viral/vesicle proteins resulted in 1O2 formation as quantified by time-resolved phosphorescence, and for the first time, endogenous 1O2 was confirmed to contribute to virus inactivation by UVB. Our study recognizes the limitation of UVB disinfection of viral vesicles particularly in solar wastewater treatment and advocates for enhanced disinfection strategies to protect public health.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"59 5","pages":"2461–2472 2461–2472"},"PeriodicalIF":10.8,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Esterified Chlorine-Resistant Nanofiltration Membranes with Enhanced Removal of Disinfection Byproducts for Efficient Water Purification

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-02-02 DOI: 10.1021/acs.est.4c12539

Kaiming Fan, Ziyan Zhang, Yanling Liu, Weihua Xu, Xiaoping Wang, Tian-Yang Zhang, Shengji Xia

{"title":"Esterified Chlorine-Resistant Nanofiltration Membranes with Enhanced Removal of Disinfection Byproducts for Efficient Water Purification","authors":"Kaiming Fan, Ziyan Zhang, Yanling Liu, Weihua Xu, Xiaoping Wang, Tian-Yang Zhang, Shengji Xia","doi":"10.1021/acs.est.4c12539","DOIUrl":"https://doi.org/10.1021/acs.est.4c12539","url":null,"abstract":"The permeance-selectivity trade-off and chlorine sensitivity of conventional polyamide membranes limit further efficiency improvement and cost reduction of nanofiltration (NF) processes for drinking water treatment. To overcome these challenges, this study proposed a reconstruction-esterification strategy for the development of advanced NF membranes. Results showed that the combination of Na3PO4 solution post-treatment and polyol molecule grafting generated a thinner active layer with smaller and more uniform pores. More importantly, the critical role of alkaline post-treatment in reducing the residual amine groups of polyamide layers was revealed, which enhanced the chlorine resistance of membranes jointly with the effect of surface esterification. In comparison with the surface water purification performance of several commercial NF membranes, the obtained esterified membrane showed excellent selectivity between natural organic matter and salts, along with a reasonable water permeance. Moreover, the higher and stable removal capacity of the esterified membrane for disinfection byproducts and their precursors demonstrated its application advantage in the potential chlorination-NF-coupled process. The developed chlorine-resistant membrane and initially attempted NF filtration of chlorinated water in this study can help promote process innovation and highlight more benefits of NF technology for drinking water treatment.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"50 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143076963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Warming Promotes Nitrogen and Carbon Cycles in Global Grassland

IF 10.8 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-02-02 DOI: 10.1021/acs.est.4c0479410.1021/acs.est.4c04794

Miao Zheng, Jinglan Cui, Luxi Cheng, Xiaoxi Wang, Xiuming Zhang, Shu Kee Lam and Baojing Gu*,

{"title":"Warming Promotes Nitrogen and Carbon Cycles in Global Grassland","authors":"Miao Zheng, Jinglan Cui, Luxi Cheng, Xiaoxi Wang, Xiuming Zhang, Shu Kee Lam and Baojing Gu*, ","doi":"10.1021/acs.est.4c0479410.1021/acs.est.4c04794","DOIUrl":"https://doi.org/10.1021/acs.est.4c04794https://doi.org/10.1021/acs.est.4c04794","url":null,"abstract":"Grasslands, standing as one of Earth’s major ecosystems, offer numerous services vital to human well-being. The productivity of grasslands hinges on the availability of soil reactive nitrogen, which is highly sensitive to climatic variations. Using an extensive synthesis of 1242 experimental observations, reinforced by multiple models, we show that warming as a single driver of climate change intensifies nitrogen dynamics in grasslands. This could lead to increases in net primary productivity of 1% to 9% and escalate nitrogen leakage into the environment by 22% to 141%. Under the warming SSP2-4.5 scenario, we foresee an annual boost of 17 million tons per year (Tg yr–1) of nitrogen inputs, predominantly via biological nitrogen fixation, compared to the baseline scenario by 2050. Total nitrogen harvest is projected to climb by 12 Tg yr–1. However, the nitrogen surplus surge is expected to increase by 5 Tg yr–1, potentially intensifying nitrogen pollution. To counter this, adaptation measures must aim at curtailing reactive nitrogen losses while preserving increased nitrogen harvest. This could reduce nitrogen input and surplus by 10 and 20 Tg yr–1, respectively, while boosting nitrogen harvest by 10 Tg yr–1, potentially yielding economic gains of up to 121 billion USD by 2050. In shaping climate change adaptation policies, it is critical to balance the potential benefits and drawbacks of forging effective management approaches.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"59 5","pages":"2505–2518 2505–2518"},"PeriodicalIF":10.8,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143376165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Warming Promotes Nitrogen and Carbon Cycles in Global Grassland

IF 9.028 1区环境科学与生态学

环境科学与技术 Pub Date : 2025-02-02 DOI: 10.1021/acs.est.4c04794

Miao Zheng, Jinglan Cui, Luxi Cheng, Xiaoxi Wang, Xiuming Zhang, Shu Kee Lam, Baojing Gu

{"title":"Warming Promotes Nitrogen and Carbon Cycles in Global Grassland","authors":"Miao Zheng, Jinglan Cui, Luxi Cheng, Xiaoxi Wang, Xiuming Zhang, Shu Kee Lam, Baojing Gu","doi":"10.1021/acs.est.4c04794","DOIUrl":"https://doi.org/10.1021/acs.est.4c04794","url":null,"abstract":"Grasslands, standing as one of Earth’s major ecosystems, offer numerous services vital to human well-being. The productivity of grasslands hinges on the availability of soil reactive nitrogen, which is highly sensitive to climatic variations. Using an extensive synthesis of 1242 experimental observations, reinforced by multiple models, we show that warming as a single driver of climate change intensifies nitrogen dynamics in grasslands. This could lead to increases in net primary productivity of 1% to 9% and escalate nitrogen leakage into the environment by 22% to 141%. Under the warming SSP2-4.5 scenario, we foresee an annual boost of 17 million tons per year (Tg yr–1) of nitrogen inputs, predominantly via biological nitrogen fixation, compared to the baseline scenario by 2050. Total nitrogen harvest is projected to climb by 12 Tg yr–1. However, the nitrogen surplus surge is expected to increase by 5 Tg yr–1, potentially intensifying nitrogen pollution. To counter this, adaptation measures must aim at curtailing reactive nitrogen losses while preserving increased nitrogen harvest. This could reduce nitrogen input and surplus by 10 and 20 Tg yr–1, respectively, while boosting nitrogen harvest by 10 Tg yr–1, potentially yielding economic gains of up to 121 billion USD by 2050. In shaping climate change adaptation policies, it is critical to balance the potential benefits and drawbacks of forging effective management approaches.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"36 1","pages":""},"PeriodicalIF":9.028,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143076958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0