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Intensified warming suppressed the snowmelt in the Tibetan Plateau

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Advances in Climate Change Research 2024年第3期15卷 452-463页

作者： Xiang LI peng CUI Xue-Qin zhang Fang zhang Key Lab of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China China‒Pakistan Joint Research Center on Earth Sciences Chinese Academy of Sciences and Higher Education CommissionIslamabad 45320Pakistan

Understanding how hydrological factors interrelate is crucial when examining the impact of climate warming on ***,these connections are often overlooked,leading to an unclear relationship between temperature and *** study investigates the complex interplay between temperature and snowmelt in the Tibetan Plateau from 1961 to 2020,focusing on how extreme high-temperature events affect the frequency of extreme *** a structural equation model,we detected three temperature-related factors that predominantly influenced snowmelt and extreme *** annual average temperature was found to have a significant indirect impact on snowmelt,mediated by changes in snowfall,snow depth and snow *** contrast,high-temperature days(daily maximum temperatures exceeding the 90th percentile)and heat waves(at least three consecutive high-temperature days)negatively affected extreme snowmelt directly or *** direct effect of increasing extreme temperature events was associated with an earlier onset of high-temperature periods,which accelerated snowmelt and shortened the duration of extreme snowmelt ***,the reduction in snow cover owing to warming emerged as a main factor suppressing snowmelt and extreme snowmelt *** also revealed spatiotemporal variations in the temperature‒snowmelt relationship that highly depended on changes in snowmelt *** study elucidated why warming suppresses snowmelt and extreme snowmelt events in the Tibetan Plateau,highlighting the mediating roles of snow-related and phenological *** findings will provide scientific support for climate simulation and water management policymaking in alpine regions worldwide.

关键词： Climate change Extreme temperature Snowmelt Structural equation model Tibetan Plateau

Reaction pathways and selectivity in the chemo-catalytic conversion of cellulose and its derivatives to ethylene glycol:A review

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Chinese Journal of Chemical Engineering 2024年第2期66卷 310-331页

作者： Yao Li Yuchun zhang Zhiyu Li Huiyan zhang peng Fu College of Agricultural Engineering and Food Science Shandong University of TechnologyZibo 255000China Key Laboratory of Energy Thermal Conversion and Control Ministry of EducationSchool of Energy and EnvironmentSoutheast UniversityNanjing 210096China

Biomass-to-ethylene glycol is an effective means to achieve high-value utilisation of cellulose but is hindered by low conversion efficiency and poor catalyst activity and *** and cellobiose are derivatives of cellulose conversion to ethylene glycol,and it is found that studying the reaction process of both can help to understand the reaction mechanism of *** is desirable to develop a reusable,highly active catalyst to convert cellulose into ethylene *** ideal catalyst might have one or more active sites described the conversion steps ***,we discuss the catalyst development of celluloseto-ethylene glycol,including tungsten,tin,lanthanide,and other transition metal catalysts,and special attention is given to the reaction mechanism and kinetics for preparing ethylene glycol from cellulose,and the economic advantages of biomass-to-ethylene glycol are briefly *** insights given in this review will facilitate further development of efficient catalysts,for addressing the global energy crisis and climate change related to the use of fossil fuels.

关键词： Ethylene glycol Cellulose Catalyst Retro-aldol condensation Hydrolysis Kinetics

Associative cultural landscape approach to interpreting traditional ecological wisdom:A case of Inuit habitat

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Frontiers of Architectural Research 2024年第1期13卷 79-96页

作者： peng zhang Shuai Li Department of Landscape Architecture College of Architecture and Urban PlanningTongji UniversityShanghai 200092China

Global climate change and the accelerated melting of glaciers have raised concerns about the ability to manage ice-snow ***,human ancestors have mastered the ecological wisdom of working with ice-snow environments,but the phenomenon has not yet been articulated in cultural landscape methodologies that emphasize“nature-culture relevance”.The challenging living environment often compels indigenous people to form a strong bond with their surroundings,leading to the creation of long-term ecological wisdom through synergistic relationships with the *** ecological environment is conceptualized as a cognitive space in the form of the landscape,with which the aboriginal community norms and individual spirits continually *** interactions generate numerous non-material cultural evidences,such as culture,art,religion,and other ideological aspects of the *** evidences symbolize the intellectual outcome of the relationship between humans and the landscape,and they create the“spiritual relevance”through personification and *** aim of the study is to explore the traditional ecological wisdom of the Inuit people who live in the harsh Arctic,and analyze the Inuit’s interaction with the landscape through the lens of“associative cultural landscape”,and decode the survival experience that the Inuit have accumulated through their long-term synergy with the Arctic *** findings focus on the synergy between the Inuit and the ice-snow landscape,examining the knowledge and ecological wisdom that the Inuit acquire from the ice-snow *** goal is to develop a perspective of the ecological environment from the viewpoint of aboriginal people and establish a methodology,model,and framework for“associative cultural landscape”that incorporates ethnic non-material cultural *** the results,a total of nine models for interpreting traditional Inuit ecological wisdom are generated based on the“diamond

关键词： Landscape architecture Associative cultural landscape Nature-culture relevance Cultural landscape Traditional ecological wisdom Non-material cultural evidence Methodology Habitat Living environment Ice-snow landscape

Geology and Geochemistry of K-feldspar Veins in Lamprophyre at the Zhenyuan Gold Deposit,Yunnan,Southwest China:Implications for Gold Mineralization

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Acta Geologica Sinica(English Edition) 2024年第1期98卷 104-116页

作者： zhang Huichao CHAI peng zhang Hongrui ZHOU Limin HOU Zengqian Key Laboratory of Submarine Geosciences Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China Key Laboratory of Marine Hazards Forecasting Ministry of Natural ResourcesHohai UniversityNanjing 210024China National Research Center for Geoanalysis Beijing 100037China

Lamprophyres typically appear in hydrothermal gold *** relationship between lamprophyres and gold deposits is investigated *** researchers suggest that the emplacement of lamprophyres triggers gold mineralization,whereas others hypothesize that the formation of lamprophyres increases the fertility of mantle sources and ore-forming fluids.K-feldspar veins,with ages between those of lamprophyres and gold deposits,appear in lamprophyres in ***,K-feldspar veins are ideal for investigating the relationship between lamprophyres and gold *** in K-feldspar veins has lower Mg#,Ni,and Cr contents and higher TiO2,Li,Ba,Sr,Sc,Zr,Nb,and Cs contents than phlogopite in *** in-situ Sr isotopic values of apatites(0.7063–0.7066)in K-feldspar veins are within the range for apatites(0.7064–0.7078)from *** large-ion lithophile element concentrations and low Nb and Ta concentrations in phlogopite from lamprophyres,in addition to high(87Sr/86Sr)i values of apatite(0.7064–0.7078),indicate that the magma parental to these phlogopite and apatite crystals is derived from an enriched *** veins are genetically correlated with lamprophyres,whereas sulfide mineral assemblage and trace element compositions of pyrite in K-feldspar veins suggest that K-feldspar veins in lamprophyres are not directly related to gold mineralization of the Zhenyuan deposit.

关键词： lamprophyre K-feldspar vein apatite Sr isotope gold Zhenyuan deposit Yunnan

SAPO-34 facilitates the formation of benzene,toluene and xylenes in direct syngas conversion over MnCrO_(x)-SAPO-34-ZSM-5

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Science China Chemistry 2024年第2期67卷 732-740页

作者： Shuchi zhang Dengyun Miao Yi Ding Mengyuan Li Shujing Guo Yujuan zhang Xiulian Pan Xinhe bao State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China University of Chinese Academy of Sciences Beijing100049China Shaanxi Yanchang Petroleum(Group)Co. Ltd.&Dalian Institute of Chemical Physics Xi’an Clean Energy(Chemical Industry)Research InstituteXi’an710000China

Direct conversion of syngas to aromatics over metal oxide and zeolite(OXZEO) composite catalysts is ***,the selectivity of more valuable products such as benzene,toluene and xylenes(BTX) is limited due to undesired secondary methylation of ***,we report that the introduction of SAPO-34 into MnCrO_(x)-ZSM-5 catalyst enhances significantly the formation of BTX without sacrificing the aromatics *** optimized conditions,the fraction of BTX in aromatics reaches 64.7% versus 28.9% over the catalyst without SAPO-34.A number of model reaction tests and characterizations reveal that SAPO-34 consumes partially the intermediates such as ketene,by converting them to light ***,the methylation of BTX by ketene to heavy aromatics is inhibited over the external acid sites of ZSM-5,leading to an enhanced BTX selectivity in the *** hybrid catalyst provides an efficient method for highly selective synthesis of BTX from syngas.

关键词： selective syngas conversion OXZEO aromatics BTX multi-functional catalysts

Self-derivation and reconstruction of silver nanoparticle reinforced cobalt-nickel bimetallic hydroxides through interface engineering for overall water splitting

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Journal of Energy Chemistry 2024年第3期90卷 590-599,I0013页

作者： Yan Li Jie Han Weiwei bao Junjun zhang Taotao Ai Mameng Yang Chunming Yang pengfei zhang National and Local Joint Engineering Laboratory for Slag Comprehensive Utilization and Environmental Technology School of Materials Science and EngineeringShaanxi University of TechnologyHanzhong 723000ShaanxiChina State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering College of Chemistry&Chemical EngineeringNingxia UniversityYinchuan 750021NingxiaChina College of Chemistry&Chemical Engineering Yan’an UniversityYan’an 716000ShaanxiChina School of Chemistry and Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Designing efficient and long-lasting non-metal electrocatalysts is an urgent task for addressing the issue of kinetic hysteresis in electrochemical oxidation *** bimetallic hydroxides,catalyzing the oxygen evolution reaction(OER),have significant research potential because hydroxide reconstruction to generate an active phase is a remarkable ***,the complete reconstruction of ultrathin CoNi(OH)_(2) nanosheets was achieved by embedding Ag nanoparticles into the hydroxide to induce a spontaneous redox reaction(SRR),forming heterojunction Ag@CoNi(OH)_(2) for bifunctional *** calculations and in situ Raman and ex situ characterizations revealed that the inductive effect of the Ag cation redistributed the charge to promote phase transformation to highly activate Ag-modified *** Co-Ni dual sites in Co/NiOOH serve as novel active sites for optimizing the intermediates,thereby weakening the barrier formed by OOH^*.Ag@CoNi(OH)_(2) required a potential of 1.55 V to drive water splitting at a current density of 10 mA cm^(-2),with nearly 98.6% Faraday *** ion induction and triggering of electron regulation in the OER via the synergistic action of the heterogeneous interface and surface reconstruction,this strategic design can overcome the limited capacity of bimetallic hydroxides and bridge the gap between the basic theory and industrialization of water decomposition.

关键词： Surface reconstruction Bimetallic hydroxides Ag nanoparticle Operando Raman Overall water splitting

Boosting overall saline water splitting by constructing a strain-engineered high-entropy electrocatalyst

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Carbon Energy 2024年第2期6卷 154-166页

作者： Ateer bao Yaohang Gu Yuxuan zhang Bowen zhang Juncheng Wu Bo Ni Xiaoyan zhang Haijun Pan Xiwei Qi School of Materials Science and Engineering Northeastern UniversityShenyangChina School of Resources and Materials Northeastern University at QinhuangdaoQinhuangdaoChina Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province Northeastern University at QinhuangdaoQinhuangdaoChina College of Metallurgy and Energy North China University of Science and TechnologyTangshanChina

High-entropy materials(HEMs),which are newly manufactured compounds that contain five or more metal cations,can be a platform with desired properties,including improved electrocatalytic performance owing to the inherent ***,a strain engineering methodology is proposed to design transition-metal-based HEM by Li manipulation(LiTM)with tunable lattice strain,thus tailoring the electronic structure and boosting electrocatalytic *** confirmed by the experiments and calculation results,tensile strain in the LiTM after Li manipulation can optimize the d-band center and increase the electrical ***,the asprepared LiTM-25 demonstrates optimized oxygen evolution reaction and hydrogen evolution reaction activity in alkaline saline water,requiring ultralow overpotentials of 265 and 42 mV at 10 mA cm−2,*** strikingly,LiTM-25 retains 94.6%activity after 80 h of a durability test when assembled as an anion-exchange membrane water ***,in order to show the general efficacy of strain engineering,we incorporate Li into electrocatalysts with higher entropies as well.

关键词： d-band center electrical conductivity high-entropy electrocatalyst lattice-strain engineering saline/alkaline water splitting

Influence of vapor pressure deficit on vegetation growth in China

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Journal of Arid Land 2024年第6期16卷 779-797页

作者： LI Chuanhua zhang Liang WANG Hongjie peng Lixiao YIN peng MIAO Peidong College of Geography and Environmental Science Northwest Normal UniversityLanzhou 730070China Hebei First Surveying and Mapping Institute Shijiazhuang 050000China

Vapor pressure deficit(VPD)plays a crucial role in determining plant physiological functions and exerts a substantial influence on vegetation,second only to carbon dioxide(CO_(2)).As a robust indicator of atmospheric water demand,VPD has implications for global water resources,and its significance extends to the structure and functioning of ***,the influence of VPD on vegetation growth under climate change remains unclear in *** study employed empirical equations to estimate the VPD in China from 2000 to 2020 based on meteorological reanalysis data of the Climatic Research Unit(CRU)Time-Series version 4.06(TS4.06)and European Centre for Medium-Range Weather Forecasts(ECMWF)Reanalysis 5(ERA-5).Vegetation growth status was characterized using three vegetation indices,namely gross primary productivity(GPP),leaf area index(LAI),and near-infrared reflectance of vegetation(NIRv).The spatiotemporal dynamics of VPD and vegetation indices were analyzed using the Theil-Sen median trend analysis and Mann-Kendall ***,the influence of VPD on vegetation growth and its relative contribution were assessed using a multiple linear regression *** results indicated an overall negative correlation between VPD and vegetation *** VPD intervals for the correlations between VPD and vegetation indices were identified:a significant positive correlation at VPD below 4.820 hPa,a significant negative correlation at VPD within 4.820–9.000 hPa,and a notable weakening of negative correlation at VPD above 9.000 *** exhibited a pronounced negative impact on vegetation growth,surpassing those of temperature,precipitation,and solar radiation in absolute ***_(2) contributed most positively to vegetation growth,with VPD offsetting approximately 30.00%of the positive effect of CO_(2).As the rise of VPD decelerated,its relative contribution to vegetation growth ***,the intensification of spatial variations in temperature an

关键词： vapor pressure deficit(VPD) near-infrared reflectance of vegetation(NIRv) leaf area index(LAI) gross primary productivity(GPP) Climatic Research Unit(CRU)Time-Series version 4.06(TS4.06) European Centre for Medium-Range Weather Forecasts(ECMWF)Reanalysis 5(ERA-5) climate change

Sex-biased adaptation shapes uniparental gene pools in Tibetans

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Science China(Life Sciences) 2024年第3期67卷 611-613页

作者： Min-Sheng peng Ya-Ping zhang State Key Laboratory of Genetic Resources and Evolution Kunming Institute of ZoologyChinese Academy of SciencesKunming 650201China KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases Kunming Institute of ZoologyChinese Academy of SciencesKunming 650201China Kunming College of Life Science University of Chinese Academy of SciencesKunming 650204China State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan School of Life SciencesYunnan UniversityKunming 650091China

During the past two decades, a series of archaeological and genetic investigations substantially improve our perception of the hominin settlement of the Tibetan Plateau(zhang et al., 2022). In addition to the identifi... 详细信息

关键词： Tibetan Plateau altitude

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