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The effects of climate warming on microbe-mediated mechanisms of sediment Carbon emission

Journal of Environmental Sciences 2023年第7期129卷 16-29页

作者： Weiwei Lü Haoyu Ren Wanchang Ding He Li Xin Yao Xia Jiang College of Water Sciences Beijing Normal UniversityBeijing 100875China State Key Laboratory of Environmental Criteria and Risk Assessment National Engineering Laboratory of Lake Water Pollution Control and Ecological Restoration TechnologyChinese Research Academy of Environmental SciencesBeijing 100012China School of Environment and Planning University of LiaochengLiaocheng 252000China

Due to significant differences in biotic and abiotic properties of soils compared to those of sediments,the predicted underlying microbe-mediated mechanisms of soil Carbon emissions in response to warming may not be applicable for estimating similar emissions from inlandwater sediments.We addressed this issue by incubating different types of sediments,(including lake,small river,and pond sediments)collected from 36 sites across the Yangtze River basin,under short-term experimentalwarming to explore the effects of climatewarming on sediment Carbon emission and the underlying microbe-mediated mechanisms.Our results indicated that under climate warming Cc emissions were affected more than CH_(4) emissions,and that pond sediments may yield a greater relative contribution of CO_(2) to total Carbon emissions than lake and river sediments.Warming-induced CO_(2) and CH_(4) increases involve different microbe-mediated mechanisms;Warming-induced sediment CO_(2) emissions were predicted to be directly positively driven by microbial community network modularity,which was significantly negatively affected by the quality and quantity of organic carbon and warming-induced variations in dissolved oxygen,Conversely,warminginduced sediment CH_(4) emissionswere predicted to be directly positively driven bymicrobial community network complexity,which was significantly negatively affected by warminginduced variations in pH.Our findings suggest that biotic and abiotic drivers for sediment CO_(2) and CH_(4) emissions in response to climate warming should be considered separately when predicting sediment organic carbon decomposition dynamics resulting from climate change.

关键词： Inland water sediments Temperature sensitivity Carbon emission Microbe-mediated mechanism Short-term experimental warming

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Carbon emission quantification and reduction in pavement use phase:A review

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第1期11卷 69-91页

作者： Linjie Zhu Jin Li Feipeng Xiao Key Laboratory of Road and Traffic Engineering of Ministry of Education Tongji UniversityShanghai 201804China

The Carbon emissions arising from road pavement infrastructures have emerged as critical issue in recent years.The life cycle of a pavement can be divided into five phases,namely raw materials and production,construction,use,maintenance and end of life.While the use phase generates the highest Carbon emissions throughout the pavement's life cycle,it is usually neglected in most pavement life cycle assessment(LCA)studies due to its complexity and uncertainty.Therefore,this review selected 126 relevant references,focuses on quantification methods,influential factors and reduction technologies of Carbon emissions in pavement use phase.Among the carbon accounting approached,the LCA approach,remains the most widely used for evaluating the environmental impact of pavements.Second,the primary influential factors on the use phase'Carbon emission include pavement-vehicle interaction primarily affected by pavement roughness,pavement albedo and climate change.Most influential factors above indirectly cause changes in Carbon emissions by influencing the pavement performance and subsequent vehicle emissions.Finally,the review surveys Carbon emission reduction technologies during pavement use phase,focusing mainly on reducing pavement rolling resistance and constructing cool pavements.Reflective pavements and permeable pavements are the most widely used cool pavement technologies.Overall,the aspects involved in this paper hold significant promise for quantifying and reducing Carbon emissions in the pavement use phase.

关键词： Pavement Carbon emission Life cycle assessment Use phase emission reduction

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Optimal Planning of IDR-integrated Electricity-heat Systems Considering Techno-economic and Carbon emission Issues

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CSEE Journal of Power and Energy Systems 2023年第6期9卷 2344-2355页

作者： Bo Zeng Yu Liu Yangfan Luo Hao Xu Luqman Ahmed the State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China the State Grid Kaifeng Power Supply Company Kaifeng 475000China

This study presents an optimal electricity-heat system(EHS)planning framework to promote the accommodation of wind power while considering technical,economic and environmental criteria.To this end,integrated demand response(IDR)is introduced as a flexibility resource to complement the inherent fluctuation of renewable energy sources and modeled by using price elasticity theory.Both the timing transferring and energy substitution potentials are considered in the proposed IDR program.Incorporating the effect of IDR into the EHS planning model,a two-stage stochastic programming model can be devised,in which the optimal EHS configuration design and associated operation control techniques are found simultaneously to minimize the system’s total economic and carbon-emission costs over the planning horizon.The multi-scale uncertainties arising from both long-term demand growth and operation-level variability of renewables/load demands are captured collectively by using a scenario-based method.The suggested planning approach is illustrated using a real EHS test case and the results show that it is effective in practical applications.

关键词： Electricity-heat system(EHS) Carbon emission wind power multi-scale uncertainties stochastic programming

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Research on low Carbon emission optimization operation technology of natural gas pipeline under multi-energy structure

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Petroleum Science 2022年第6期19卷 3046-3058页

作者： En-Bin Liu Yong Peng Shan-Bi Peng Bin Yu Qi-Kun Chen Petroleum Engineering School Southwest Petroleum UniversityChengdu610500China School of Civil Engineering and Geomatics Southwest Petroleum UniversityChengdu610500China China Petroleum Pipeline Engineering Corporation Hebei065000China School of Engineering Cardiff UniversityCardiffCF243AAUK

In order to reduce the Carbon emissions of natural gas pipelines,based on the background of different energy structures,this paper proposes a general low carbon and low consumption operation model of natural gas pipelines,which is used to fine calculate the Carbon emissions and energy consumption of natural gas pipeline.In this paper,an improved particle swarm optimization(NHPSO-JTVAC)algorithm is used to solve the model and the optimal scheduling scheme is given.Taking a parallel pipeline located in western China as an example,the case is analyzed.The results show that after optimization,under the existing energy types,the pipeline system can reduce 31.14%of Carbon emissions,and after introducing part of new energy,the pipeline system can reduce 34.02%of Carbon emissions,but the energy consumption has increased.

关键词： Natural gas Pipeline optimization NHPSO-JTVAC algorithm Carbon emission New energy

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Analysis on Carbon emission reduction intensity of fuel cell vehicles from a life-cycle perspective

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Frontiers in Energy 2024年第1期18卷 16-27页

作者： Ziyuan TENG Chao TAN Peiyuan LIU Minfang HAN Fuel Cell and Energy Storage Center Department of Energy and Power EngineeringState Key Laboratory of Control and Simulation of Power Systems and Generation EquipmentTsinghua UniversityBeijing 100084China

The hydrogen fuel cell vehicle is rapidly developing in China for carbon reduction and neutrality.This paper evaluated the life-cycle cost and Carbon emission of hydrogen energy via lots of field surveys,including hydrogen production and packing in chlor-alkali plants,transport by tube trailers,storage and refueling in hydrogen refueling stations(HRSs),and application for use in two different cities.It also conducted a comparative study for battery electric vehicles(BEVs)and internal combustion engine vehicles(ICEVs).The result indicates that hydrogen fuel cell vehicle(FCV)has the best environmental performance but the highest energy cost.However,a sufficient hydrogen supply can significantly reduce the carbon intensity and FCV energy cost of the current system.The Carbon emission for FCV application has the potential to decrease by 73.1%in City A and 43.8%in City B.It only takes 11.0%–20.1%of the BEV emission and 8.2%–9.8%of the ICEV emission.The cost of FCV driving can be reduced by 39.1%in City A.Further improvement can be obtained with an economical and“greener”hydrogen production pathway.

关键词： hydrogen energy life-cycle assessment(LCA) fuel cell vehicle Carbon emission energy cost

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Inter-Provincial Transaction Model in Two-Level ElectricityMarket Considering Carbon emission and Consumption Responsibility Weights

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Energy Engineering 2023年第10期120卷 2393-2416页

作者： Chunlei Jiao HongyanHao Ming Li Rifucairen Fu Yichun Liu Shunfu Lin Ronghui Liu Electric New Power System Technology Research Institute The Electric Power Research Institute of State Grid Xinjiang Electric Power Co.Ltd.Urumqi830000China Power Dispatch Control Center State Grid Xinjiang Electric Power Co.Ltd.Urumqi830063China College of Electrical Engineering Shanghai University of Electric PowerShanghai200090China

In the context of the joint operation of China’s intra-provincial markets and inter-provincial trading,how to meet the load demand and energy consumption using inter-provincial renewable energy trading is a key problem.The combined operation of intra-provincial and inter-provincial markets provides a new way for provincial power companies to optimize and clear the intra-provincial power market,complete the intra-provincial consumption responsibility weight index,and consume renewable energy across provinces and regions.This paper combines power generation and consumption within the province,uses inter-provincial renewable energy trading tomeet the load demand within the province and completes the index of intra-provincial consumption responsibility weights.The intra-provincial market trading and inter-provincial market clearing are respectively taken as the upper and lower levels of the model.Under the two-level electricity market operation framework,the upper-level model aims to minimize the expected total operating cost within the province considering the Carbon emission cost and the weight of the consumption responsibility,while the lower-level model aims to minimize the inter-provincial renewable energy purchasing cost.Finally,the influence of inter-provincial transaction mechanism,risk aversion coefficient,voucher price,and responsibility weight on operating cost is analyzed.Simulation is used to verify that the proposed model can meet the requirements of the provincial load power consumption and the consumption responsibility weight index,and promote the consumption of renewable energy.

关键词： Consumption responsibility weights electricity market Carbon emission transactions between provinces

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The impact of Carbon emission trading policy on firms’green innovation in China

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Financial Innovation 2022年第1期8卷 1573-1596页

作者： Hongxin Yu Yaohui Jiang Zhaowen Zhang Wen-Long Shang Chunjia Han Yuanjun Zhao Faculty of Business Economics Shanghai Business SchoolShanghai 200235China College of Business Shanghai Uni-versity of Finance and EconomicsShanghai 200433China College of Metropolitan Transportation Beijing University of TechnologyBeijing 100124China Department of Management BirkbeckUniversity of LondonLondon WC1E 7HXUK School of Accounting Nanjing Audit UniversityNanjing 211815China School of Traffic and Transportation Beijing Jiaotong UniversityBeijing 100008China Centre for Transport Studies Imperial College LondonLondon SW72AZUK

This study aims to examine the green innovation effect of the Carbon emissions pilot policy in China.First,using the difference-in-differences method and regressions of instrumental variables using the data from Chinese listed firms,we verify that the policy promotes green innovation among regulated firms and is more pronounced among state-owned enterprises,firms in the eastern region,and those with lower financing constraints.Furthermore,this positive effect spreads downstream relative to the regulated firms through input–output linkages,but reduces green innovation to upstream firms.Accordingly,such diffusion of innovation is achieved through the price mechanism.The results necessitate the introduction of various derivatives to mobilize the market to reduce the speculative volatility of carbon prices.In addition,relevant supporting policies must be established to encourage corporate innovation to reduce the crowding-out effect owing to emission reduction and the nonmarket factors.

关键词： Carbon emission carbon finance innovation Green innovation Environmental regulation Differences-in-differences

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Carbon emission analysis of a residential building in China through life cycle assessment

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Frontiers of Environmental Science & Engineering 2016年第1期10卷 150-158页

作者： Yin ZHANG Xuejing ZHENG Huan ZHANG Gaofeng CHEN Xia WANG School of Environmental Science and Engineering Tianjin University Tianjin 300072 China China Architecture Design & Research Group Beijing 100044 China

In this paper, a quantitative life cycle model for Carbon emission accounting was developed based on the life cycle assessment （LCA） theory. A residential building in Sino-Singapore Tianjin Eco-city （Tianjin, China） was selected as a sample, which had been constructed according to the concept of green environmental protection and sustainable development. In the scenario of this research, material production, construction, use and maintenance, and demolition phases were assessed by building Carbon emission models. Results show that use and maintenance phase and material production phase are the most significant contributors to the life cycle Carbon emissions of a building. We also analyzed some factor influences in LCA, including the thickness of the insulating layer and the length of building service life. The analysis suggest that thicker insulating layer does not necessarily produce less Carbon emissions in the light of LCA, and if service life of a building increases, its Carbon emissions during the whole life cycle will rise as well but its unit Carbon emission will decrease inversely. Some advices on controlling Carbon emissions from buildings are also provided.

关键词： life cycle assessment Carbon emission factorinfluence analysis

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An Empirical Study on China＇s Energy Supply-and-Demand Model Considering Carbon emission Peak Constraints in 2030

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Engineering 2017年第4期3卷 512-517页

作者： Jinhang Chen China Datang Corporation Beijing 100033 China

China’s energy supply-and-demand model and two related Carbon emission scenarios, including a planned peak scenario and an advanced peak scenario, are designed taking into consideration China’s economic development, technological progress, policies, resources, environmental capacity, and other factors. The analysis of the defined scenarios provides the following conclusions: Primary energy and power demand will continue to grow leading up to 2030, and the growth rate of power demand will be much higher than that of primary energy demand. Moreover, low carbonization will be a basic feature of energy supply-and-demand structural changes, and non-fossil energy will replace oil as the second largest energy source. Finally, energy-related Carbon emissions could peak in 2025 through the application of more efficient energy consumption patterns and more low-carbon energy supply modes. The push toward decarbonization of the power industry is essential for reducing the peak value of Carbon emissions.

关键词： Carbon emission Peak Energy supply and demand Model Scenario

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Industrial Carbon emission Distribution and Regional Joint emission Reduction:A Case Study of Cities in the Pearl River Basin,China

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Chinese Geographical Science 2024年第2期34卷 210-229页

作者： JIANG Hongtao YIN Jian ZHANG Bin WEI Danqi LUO Xinyuan DING Yi XIA Ruici Center for Western China Modernization Guizhou University of Finance and EconomicsGuiyang 550025China College of Big Data Application and Economic Guizhou University of Finance and EconomicsGuiyang 550025China Key Laboratory of Green Fintech Guizhou University of Finance and EconomicsGuiyang 550025China

China’s low-carbon development path will make significant contributions to achieving global sustainable development goals.Due to the diverse natural and economic conditions across different regions in China,there exists an imbalance in the distribution of car-bon emissions.Therefore,regional cooperation serves as an effective means to attain low-carbon development.This study examined the pattern of Carbon emissions and proposed a potential joint emission reduction strategy by utilizing the industrial Carbon emission intens-ity(ICEI)as a crucial factor.We utilized social network analysis and Local Indicators of Spatial Association(LISA)space-time trans-ition matrix to investigate the spatiotemporal connections and discrepancies of ICEI in the cities of the Pearl River Basin(PRB),China from 2010 to 2020.The primary drivers of the ICEI were determined through geographical detectors and multi-scale geographically weighted regression.The results were as follows:1)the overall ICEI in the Pearl River Basin is showing a downward trend,and there is a significant spatial imbalance.2)There are numerous network connections between cities regarding the ICEI,but the network structure is relatively fragile and unstable.3)Economically developed cities such as Guangzhou,Foshan,and Dongguan are in the center of the network while playing an intermediary role.4)Energy consumption,industrialization,per capita GDP,urbanization,science and techno-logy,and productivity are found to be the most influential variables in the spatial differentiation of ICEI,and their combination in-creased the explanatory power of the geographic variation of ICEI.Finally,through the analysis of differences and connections in urban Carbon emissions under different economic levels and ICEI,the study suggests joint carbon reduction strategies,which are centered on carbon transfer,financial support,and technological assistance among cities.

关键词： industrial Carbon emission intensity Carbon emission social network analysis Location Indicators of Spatial Association(LISA) geographical detector multi-scale geographically weighted regression Pearl River Basin(PRB),China

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