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Large potential of strengthening the land carbon sink in China through anthropogenic interventions

science Bulletin 2024年第16期69卷 2622-2631页

作者： Xu Yue Hao Zhou Yang Cao Hong Liao Xiaofei Lu Zhen Yu Wenping Yuan Zhu Liu Yadong Lei Stephen Sitch Jürgen Knauer Huijun Wang Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and EngineeringNanjing University of Information Science&Technology(NUIST)Nanjing 210044China College of Meteorology and Oceanography National University of Defense TechnologyChangsha 410073China Jiangsu Nanjing Environmental Monitoring Center Nanjing 210013China Key Laboratory of Agrometeorology of Jiangsu Province Institute of EcologySchool of Applied MeteorologyNUISTNanjing 210044China Institute of Carbon Neutrality Sino-French Institute for Earth System ScienceCollege of Urban and Environmental SciencesPeking UniversityBeijing 100871China Department of Earth System Science Tsinghua UniversityBeijing 100084China State Key Laboratory of Severe Weather and Key Laboratory of Atmospheric Chemistry of CMA Chinese Academy of Meteorological SciencesBeijing 100081China College of Life and Environmental Sciences University of ExeterExeter EX44RJUK Hawkesbury Institute for the Environment Western Sydney UniversityPenrith 2751Australia Key Laboratory of Meteorological Disaster Ministry of EducationJoint International Research Laboratory of Climate and Environment ChangeCollaborative Innovation Center on Forecast and Evaluation of Meteorological DisastersNUISTNanjing 210044China

The terrestrial ecosystem in China mitigates 21%-45%of the national contemporary fossil fuel CO_(2) emissions every *** and strengthening the land carbon sink is essential for reaching China’s target of carbon ***,this sink is subject to large uncertainties due to the joint impacts of climate change,air pollution,and human ***,we explore the potential of strengthening land carbon sink in China through anthropogenic interventions,including forestation,ozone reduction,and litter removal,taking advantage of a well-validated dynamic vegetation model and meteorological forcings from 16 climate *** anthropogenic interventions,considering Shared Socioeconomic Pathways(SSP)scenarios,the land sink is projected to be 0.26-0.56 Pg C a^(-1) at 2060,to which climate change contributes 0.06-0.13 Pg C a^(-1) and CO_(2) fertilization contributes 0.08-0.44 Pg C a^(-1) with the stronger effects for higher emission *** anthropogenic interventions,under a close-to-neutral emission scenario(SSP1-2.6),the land sink becomes 0.47-0.57 Pg C a^(-1) at 2060,including the contributions of 0.12 Pg C a^(-1) by conservative forestation,0.07 Pg C a^(-1) by ozone pollution control,and 0.06-0.16 Pg C a^(-1) by 20%litter removal over planted *** sink can mitigate 90%-110% of the residue anthropogenic carbon emissions in 2060,providing a solid foundation for the carbon neutrality in China.

关键词： Carbon sink Forestation Ozone Litter removal

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Machine Learning for Complex Systems with Abnormal Pattern by Exception Maximization Outlier Detection Method

arXiv

引用

arXiv 2024年

作者： Zhang, Zhikun Duan, Yiting Wang, Xiangjun Zhang, Mingyuan School of Mathematics and Statistics Huazhong University of Science and Technology Wuhan430074 China School of Reliability and Systems Engineering Beihang University Beijing100091 China National Key Laboratory of Science and Technology on Vessel Integrated Power System Wuhan430033 China

This paper proposes a novel fast online methodology for outlier detection called the exception maximization outlier detection method(EMODM), which employs probabilistic models and statistical algorithms to detect abnormal patterns from the outputs of complex systems. The EMODM is based on a two-state Gaussian mixture model and demonstrates strong performance in probability anomaly detection working on real-time raw data rather than using special prior distribution information. We confirm this using the synthetic data from two numerical cases. For the real-world data, we have detected the short circuit pattern of the circuit system using EMODM by the current and voltage output of a three-phase inverter. The EMODM also found an abnormal period due to COVID-19 in the insured unemployment data of 53 regions in the United States from 2000 to 2024. The application of EMODM to these two real-life datasets demonstrated the effectiveness and accuracy of our algorithm. © 2024, CC BY.

关键词： Anomaly detection

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Hydration mechanism and mechanical properties of slag-phosphogypsum solid waste-based cementitious composite incorporated silica fume

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Construction and Building Materials 2025年 485卷

作者： Ma, Binhui Li, Yuqi Lan, Tian Huang, Bo Chen, Jiasen Peng, Quan Du, Bicheng Ma, Minglei School of Civil Engineering Hunan University of Science and Technology Xiangtan411201 China National Key Laboratory of Green and Long-Life Road Engineering in Extreme Environment Changsha410114 China Hunan Provincial Key Laboratory of Geotechnical Engineering Stability Control and Health Monitoring Xiangtan411201 China Engineering Research Institute China Construction Eighth Engineering Division Corp Ltd Shanghai200000 China Engineering Testing Center Hunan University of Science and Technology Xiangtan411201 China

A new solid waste-based cementitious composite was proposed in this study. Silica fume was incorporated based on the determination of the optimal mixing ratios of granulated blast furnace slag, phosphogypsum and carbide slag to further improve their material properties. Analysis of the strength and material characterization test results revealed that the addition of silica fume led to increased paste viscosity and reduced system alkalinity. These changes hindered the dispersion of precursor particles and decreased the formation of hydration products, collectively resulting in diminished early-age strength of the cured paste system. However, silica fume consumed excess carbide slag, preventing deterioration of hydration products as well as the precipitation and structural alterations of calcium hydroxide crystals, and avoiding the resultant late-stage strength decline. And because the silica fume fills the internal pores while providing additional nucleation sites for the hydration products, the internal structure of the hardened paste became denser, the hydrated gel is tightly connected to the ettringite, and the number of microcracks and harmful pores was significantly reduced, so that it has a higher late-stage strength. The maximum strength of 28d can reach 57.7 MPa. This solid waste-based cementitious composite does not require a chemical activator and high-temperature curing, which can effectively reduce energy consumption and carbon emissions, be conducive to the green development of the construction industry, and promote the recycling of solid waste. © 2025 Elsevier Ltd

关键词： Debris

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A New "Off-on-Off" Fluorescent Probe for Continuous Detection of Mg²⁺/F⁻ and its Application

SSRN

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SSRN 2025年

作者： Wang, Huizhen Tang, Yan Qiu, Dingxin Su, Ke Chang, Guanjun School of Science Asymmetric Synthesis and Chiral technology Key Laboratory of Sichuan Province Xihua University Chengdu610039 China State Key Laboratory of Environment-friendly Energy Materials National Engineering Technology Center for Insulation Materials School of Materials and Chemistry Southwest University of Science and Technology Mianyang621010 China School of Resource and Environment Aba Teachers College Aba 623002 China

A novel compound, (E)-3-hydroxy-N’-(2-hydroxy-4,6-dimethoxybenzylidene)-2-naphthohydrazide (DMN), with a "donor-acceptor" electronic structure, was successfully synthesized. The DMN probe demonstrated rapid and selective recognition of Mg2+ in a solvent system (H2O/DMSO = 1:9), producing a pronounced fluorescence "turn-on" effect. The resultant DMN-Mg2+ complex exhibited high sensitivity for detecting F- in the same solvent system, showing a notable fluorescence "turn-off" response. The binding mechanism of DMN-Mg2+ was elucidated through Job's plot, 1H NMR, DFT analysis, and mass spectrometry. The detection limits for Mg2+ and F- were determined to be 2.2009 × 10-8 mol/L and 4.6937 × 10-8 mol/L, respectively. Spiked recovery experiments confirmed the probe's capability to detect Mg2+ and F- in natural water samples. Notably, DMN represents the first reported probe capable of continuous detection of Mg2+ and F-. Furthermore, DMN can be fabricated into fluorescent rapid test paper for practical applications. © 2025, The Authors. All rights reserved.

关键词： Probes

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Tannery wastewater treatment:conventional and promising processes,an updated 20-year review

引用

Journal of Leather science and engineering 2022年第3期4卷 130-151页

作者： Jun Zhao Qinglian Wu Yuling Tang Jianfei Zhou Hongguang Guo MOE Key Laboratory of Deep Earth Science and Engineering College of Architecture and EnvironmentSichuan UniversityChengdu 610065People’s Republic of China National Engineering Research Center of Clean Technology in Leather Industry Sichuan UniversityChengdu 610065People’s Republic of China

Mismanagement of various wastes especially waste water produced by tanning processes has caused serious environmental problems and ultimately impaired human *** efforts have been making to alleviate the pollution of tannery wastewater(TWW),yet terminal treatment still takes *** this review,research on TWW treatment from 2000 to 2021 was summarized,and main methods such as coagulation and flocculation,adsorption,biological treatment,membrane filtration,advanced oxidation process were briefly *** detailed introduc-tion was given to the method of electrochemical treatment since it has excellent performance such as environmental friendliness and high efficiency,hence attracting more and more research attention in recent *** view of the harsh physi-chemical conditions of TWW,integrated or combined treatment methods are accordingly recommended with better performance and multi-function,however comprehensive studies on optimization of methods combina-tion and cost-effectiveness are *** certain issues that the residue Cr in treatment sludge and high salinity in effluent still remain were put forward in this work and potential solutions were ***,this review pro-posed the perspective that realizing multi-function,recycling,and intensification should be the developing direction for future TWW *** review is expected to provide a general guide for researchers who aspire to ameliorate TWW pollution problems and understand various methods utilized in this field.

关键词： Tannery wastewater Decontamination Treatment Electrochemical Integrated methods Recycling

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Artificial intelligence for geoscience:Progress,challenges,and perspectives

引用

The Innovation 2024年第5期5卷 136-160,135页

作者： Tianjie Zhao Sheng Wang Chaojun Ouyang Min Chen Chenying Liu Jin Zhang Long Yu Fei Wang Yong Xie Jun Li Fang Wang Sabine Grunwald Bryan MWong Fan Zhang Zhen Qian Yongjun Xu Chengqing Yu Wei Han Tao Sun Zezhi Shao Tangwen Qian Zhao Chen Jiangyuan Zeng Huai Zhang Husi Letu Bing Zhang Li Wang Lei Luo Chong Shi Hongjun Su Hongsheng Zhang Shuai Yin Ni Huang Wei Zhao Nan Li Chaolei Zheng Yang Zhou Changping Huang Defeng Feng Qingsong Xu Yan Wu Danfeng Hong Zhenyu Wang Yinyi Lin Tangtang Zhang Prashant Kumar Antonio Plaza Jocelyn Chanussot Jiabao Zhang Jiancheng Shi Lizhe Wang Aerospace Information Research Institute Chinese Academy of SciencesBeijing 100094China School of Computer Science China University of GeosciencesWuhan 430078China State Key Laboratory of Mountain Hazards and Engineering Resilience Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610299China Key Laboratory of Virtual Geographic Environment(Ministry of Education of PRC) Nanjing Normal UniversityNanjing 210023China Data Science in Earth Observation Technical University of Munich80333 MunichGermany The National Key Laboratory of Water Disaster Prevention Yangtze Institute for Conservation and DevelopmentHohai UniversityNanjing 210098China Institute of Computing Technology Chinese Academy of SciencesBeijing 100190China School of Geographical Sciences Nanjing University of Information Science and TechnologyNanjing 210044China State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China Soil Water and Ecosystem Sciences DepartmentUniversity of FloridaPO Box 110290GainesvilleFLUSA Materials Science Engineering Program Cooperating Faculty Member in the Department of Chemistry and Department of Physics Astronomy University of CaliforniaCaliforniaRiversideCA 92521USA Institute of Remote Sensing and Geographical Information System School of Earth and Space SciencesPeking UniversityBeijing 100871China Key Laboratory of Computational Geodynamics University of Chinese Academy of SciencesBeijing 100049China International Research Center of Big Data for Sustainable Development Goals Beijing 100094China College of Geography and Remote Sensing Hohai UniversityNanjing 211100China Department of Geography The University of Hong KongHong Kong 999077SARChina Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Nanjing 210044China School of Environmental Science and Engineering Nanjing University of Information Science&TechnologyNanjing 210044China Collaborative Inno

This paper explores the evolution of geoscientific inquiry,tracing the progression from traditional physics-based models to modern data-driven approaches facilitated by significant advancements in artificial intelligence(AI)and data collection *** models,which are grounded in physical and numerical frameworks,provide robust explanations by explicitly reconstructing underlying physical ***,their limitations in comprehensively capturing Earth’s complexities and uncertainties pose challenges in optimization and real-world *** contrast,contemporary data-driven models,particularly those utilizing machine learning(ML)and deep learning(DL),leverage extensive geoscience data to glean insights without requiring exhaustive theoretical *** techniques have shown promise in addressing Earth science-related ***,challenges such as data scarcity,computational demands,data privacy concerns,and the“black-box”nature of AI models hinder their seamless integration into *** integration of physics-based and data-driven methodologies into hybrid models presents an alternative *** models,which incorporate domain knowledge to guide AI methodologies,demonstrate enhanced efficiency and performance with reduced training data *** review provides a comprehensive overview of geoscientific research paradigms,emphasizing untapped opportunities at the intersection of advanced AI techniques and *** examines major methodologies,showcases advances in large-scale models,and discusses the challenges and prospects that will shape the future landscape of AI in *** paper outlines a dynamic field ripe with possibilities,poised to unlock new understandings of Earth’s complexities and further advance geoscience exploration.

关键词： Earth utilizing landscape

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Geochemical fingerprints and hydrocarbon potential of Paleocene mudrocks in the Tano Basin, Ghana: insights from biomarkers and stable carbon isotopes

引用

Acta Geochimica 2024年第2期43卷 255-279页

作者： Kojo Amoako Nancy Pearl Osei-Boakye Ningning Zhong N’Guessan Francois De Sales Konan Gordon Foli Prince Opoku Appau Clifford Fenyi Ebenezer Apesegah Research Group for Marine Geochemistry(ICBM-MPI Bridging Group) Institute for Chemistry and Biology of the Marine Environment(ICBM)Carl von Ossietzky University OldenburgAmmerlander Heerstr.26129 OldenburgGermany State Key Laboratory of Petroleum Resources and Prospecting College of GeosciencesChina University of PetroleumBeijing 102249China Department of Geological Engineering Faculty of Civil and Geo-EngineeringKwame Nkrumah University of Science and TechnologyKumasiGhana Ghana National Gas Company 225 Osibisa CloseAirport WestAccraGhana Petroleum Corporation GNPCPMBPetroleum HouseTemaGhana

The Paleocene mudrocks in Ghana’s Tano Basin have received limited attention despite ongoing efforts to explore hydrocarbon resources.A thorough geochemical analysis is imperative to assess these mudrocks’petroleum generation potential and formulate effective exploration *** this study,a comprehensive geochemical analysis was carried out on ten Paleocene rock cuttings extracted from TP-1,a discovery well within the Tano *** analytical techniques,including total organic carbon(TOC)analysis,Rock–Eval pyrolysis,gas chromatography-mass spectrometry,and isotope ratio-mass spectrometry,were employed to elucidate their hydrocar-bon potential and organic ***ﬁndings in this study were subsequently compared to existing geochemical data on Paleocene source rocks in the South Atlantic marginal *** results indicated that the Paleocene samples have TOC content ranging from 0.68 to 2.93 wt%.The prevalent kerogen types identiﬁed in these samples were Type Ⅱ and Type Ⅲ.Molecular and isotope data suggest that the organic matter found in the Paleocene mudrocks can be traced back to land plants and lower aquatic *** mudrocks were deposited in a transi-tional environment withﬂuctuating water salinity,charac-terized by sub-oxic redox *** indices,both bulk and molecular,indicated a spectrum of maturity levels within the Paleocene mudrocks,spanning from immature to marginally mature,with increasing maturity observed with greater *** comparison,the organic composition and depositional environments of Paleocene source rocks in the Tano Basin closely resemble those found in the Niger Delta Basin,Douala,and Kribi-Campo Basins,the Kwanza Formation in Angola,and certain Brazilian marginal ***,it is worth noting that Paleocene source rocks in some of the basins,such as the Niger Delta and Brazilian marginal basins,exhibit rela-tively higher thermal maturity levels compared to those observed in the current Paleocene samp

关键词： Paleocene source rocks Source input Depositional environment Thermal maturity Hydrocarbon potential Tano Basin West Africa

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Phase segregation of a composite air electrode unlocks the high performance of reversible protonic ceramic electrochemical cells

引用

Energy and environmental science 2024年第11期17卷 3898-3907页

作者： He, Fan Hou, Mingyang Liu, Dongliang Ding, Yong Sasaki, Kotaro Choi, YongMan Guo, Shihang Han, Donglin Liu, Ying Liu, Meilin Chen, Yu School of Environment and Energy South China University of Technology 382 East Road Higher Education Mega Center Guangzhou510006 China State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University Nanjing210009 China School of Material Science and Engineering Georgia Institute of Technology 771 Ferst Dr NW AtlantaGA30309 United States Chemistry Division Brookhaven National Laboratory UptonNY11973 United States College of Photonics National Yang Ming Chiao Tung University Tainan71150 Taiwan College of Energy Soochow University No 1 Shizi Street Gusu District Suzhou215006 China Research Institute of Renewable Energy and Advanced Materials Zijin Mining Group Co. Ltd Xiamen Fujian361101 China

One breakthrough in developing highly efficient air electrodes for reversible protonic ceramic electrochemical cells (R-PCECs) is optimizing the sluggish oxygen reduction and water oxidation reactions. Here, we present a novel composite material with a nominal formula of high-entropy Ce0.2Ba0.2Sr0.2La0.2Ca0.2CoO3−δ (CBSLCC) that spontaneously self-assembles to three-phase electrocatalysts composed of deficient Ce0.2−yBa0.2Sr0.2−xLa0.2−xCa0.2CoO3−δ (CD-CBSLCC), CeO2, and La0.5Sr0.5CoO3−δ (LSC). Mechanistic studies corroborate that oxygen reduction may occur on entire air electrode surfaces, followed by water formation preferentially at or near CD-CBSLCC. The CeO2 phase could provide or consume protons to facilitate the oxygen evolution/reduction kinetics in R-PCECs. The developed electrodes demonstrate a record-high electrochemical performance in dual modes of fuel cells and electrolysis cells, delivering a peak power density of 1.66 W cm−2 at 600 °C and a current density of −1.76 A cm−2 at 1.3 V and 600 °C. Excellent operational stabilities of the fuel cell (200 h at 600 °C), electrolysis cell (200 h at 600 °C), and reversible cycling (548 h at 550 °C) provide a promising and reliable step towards realizing the commercialization of R-PCECs. © 2024 The Royal Society of Chemistry

关键词： Cerium oxide

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Synergetic roadmap of carbon neutrality and clean air for China

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environmental science and Ecotechnology 2023年第4期16卷 1-25页

作者： Qiang Zhang Zhicong Yin Xi Lu Jicheng Gong Yu Lei Bofeng Cai Cilan Cai Qimin Chai Huopo Chen Hancheng Dai Zhanfeng Dong Guannan Geng Dabo Guan Jianlin Hu Cunrui Huang Jianing Kang Tiantian Li Wei Li Yongsheng Lin Jun Liu Xin Liu Zhu Liu Jinghui Ma Guofeng Shen Dan Tong Xuhui Wang Xuying Wang Zhili Wang Yang Xie Honglei Xu Tao Xue Bing Zhang Da Zhang Shaohui Zhang Shaojun Zhang Xian Zhang Bo Zheng Yixuan Zheng Tong Zhu Jinnan Wang Kebin He Ministry of Education Key Laboratory for Earth System Modelling Department of Earth System ScienceTsinghua UniversityBeijing100084China Key Laboratory of Meteorological Disaster Ministry of Education/Joint International Research Laboratory of Climate and Environment Change(ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD)Nanjing University of Information Science&TechnologyNanjing210044China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China Institute for Carbon Neutrality Tsinghua UniversityBeijing100084China State Key Joint Laboratory for Environment Simulation and Pollution Control College of Environmental Sciences and Engineering and Center for Environment and HealthPeking UniversityBeijing100871China Center of Air Quality Simulation and System Analysis Chinese Academy of Environmental PlanningBeijing100012China Center for Carbon Neutrality Chinese Academy of Environmental PlanningBeijing100012China National Center for Climate Change Strategy and International CooperationBeijing100035China Nansen-Zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing100029China College of Environmental Sciences and Engineering Peking UniversityBeijing100871China Institute of Environmental Policy Management Chinese Academy of Environmental PlanningBeijing100012China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control School of Environmental Science and EngineeringCollaborative Innovation Center of Atmospheric Environment and Equipment TechnologyNanjing University of Information Science and TechnologyNanjing210044China Vanke School of Public Health Tsinghua UniversityBeijing100084China Center for Energy and Environmental Policy Research Beijing Institute of TechnologyBeijing100081China China CDC Key Laboratory of Environment and Population Health National Institute of En

It is well recognized that carbon dioxide and air pollutants share similar emission sources so that synergetic policies on climate change mitigation and air pollution control can lead to remarkable co-benefits on greenhouse gas reduction,air quality improvement,and improved *** the context of carbon peak,carbon neutrality,and clean air policies,this perspective tracks and analyzes the process of the synergetic governance of air pollution and climate change in China by developing and monitoring 18 *** 18 indicators cover the following five aspects:air pollution and associated weather-climate conditions,progress in structural transition,sources,inks,and mitigation pathway of atmospheric composition,health impacts and benefits of coordinated control,and synergetic governance system and *** tracking the progress in each indicator,this perspective presents the major accomplishment of coordinated control,identifies the emerging challenges toward the synergetic governance,and provides policy recommendations for designing a synergetic roadmap of Carbon Neutrality and Clean Air for China.

关键词： Carbon neutrality Clean air Synergetic roadmap

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High-Rate Nitrogen Removal by Partial Nitritation/Anammox With a Single-Stage Membrane-Aerated Biofilm Reactor

SSRN

引用

SSRN 2023年

作者： Song, Zixuan Hao, Shiwei Zhang, Li Fan, Xuepeng Peng, Yongzhen National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering Beijing University of Technology Beijing100124 China

In this study, a membrane aerated biofilm reactor (MABR) coupled partial nitritation/anammox (PN/A) system was established for high-rate nitrogen removal. Results showed that the nitrogen removal efficiency of 90.34% was finally obtained when influent ammonia was increased from 150 mg L-1 to 300 mg L-1. Based on the fluorescence spectroscopy technology, the raised hydrophobicity tryptophan in extracellular polymeric substances (EPS) promoted biofilm formation and bacteria aggregation. 16S rRNA gene amplicon sequencing revealed that the propagation of AOB and AnAOB was also enhanced by ammonia (Nitrosomonas and Candidatus Brocadia increased by 6.02 % and 10.06 % in biofilm, respectively), which further facilitated nitrogen removal efficiency. Furthermore, the proliferation of key functional genes involved in partial nitritation and anammox, especially hao and nirK (up-regulated by 1.31 and 1.26 times), was conducive to accelerating the electron generation and consumption. Therefore, raising influent ammonia content intensified microbial electron transfer behavior and high-rate nitrogen metabolism. © 2023, The Authors. All rights reserved.

关键词： Ammonia

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