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MEIC-global-CO_(2):A new global CO_(2)emission inventory with highly-resolved source category and sub-country information

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Science China Earth Sciences 2024年第2期67卷 450-465页

作者： Ruochong XU Dan TONG Qingyang XIAO Xinying QIN Cuihong CHEN Liu YAN Jing cheng Can CUI Hanwen HU wenyu LIU Xizhe YAN Huaxuan WANG Xiaodong LIU Guannan GENG Yu LEI Dabo GUAN Kebin HE Qiang ZHANG Department of Earth System Science Ministry of Education Key Laboratory for Earth System ModelingInstitute for Global Change StudiesTsinghua UniversityBeijing100084China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China Chinese Academy of Environmental Planning Beijing100041China Institute for Carbon Neutrality Tsinghua UniversityBeijing100084China

CO_(2)emission inventory provides fundamental data for climate research and emission mitigation.Currently,most global CO_(2)emission inventories were developed with energy statistics from International Energy Agency(IEA)and were available at country level with limited source categories.Here,as the first step toward a high-resolution and dynamic updated global CO_(2)emission database,we developed a data-driven approach to construct seamless and highly-resolved energy consumption data cubes for 208 countries/territories,797 sub-country administrative divisions in 29 countries,42 fuel types,and 52 sectors,with the fusion of activity data from 24 international statistics and 65 regional/local statistics.Global CO_(2)emissions from fossil fuel combustion and cement production in 1970–2021 were then estimated with highly-resolved source category(1,484 of total)and sub-country information(797 of total).Specifically,73%of global CO_(2)emissions in 2021 were estimated with sub-country information,providing considerably improved spatial resolution for global CO_(2)emission accounting.With the support of detailed information,the dynamics of global CO_(2)emissions across sectors and fuel types were presented,representing the evolution of global economy and progress of climate mitigation.Remarkable differences of sectoral contribution were found across sub-country administrative divisions within a given country,revealing the uneven distribution of energy and economic structure among different regions.Our estimates were generally consistent with existing databases at aggregated level for global total or large emitters,while large discrepancies were observed for middle and small emitters.Our database,named the Multiresolution Emission Inventory model for Climate and air pollution research(MEIC)is publicly available through http://*** with highly-resolved information and timely update,which provides an independent carbon emission accounting data source for climate research.

关键词： CO_(2)emissions Data-driven approach Highly-resolved source category Sub-country information

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Elevational distribution of forests and its spatiotemporal dynamics in subtropical China from 2000 to 2019

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Science China Earth Sciences 2024年第8期67卷 2563-2582页

作者： Zhencan ZHENG Liuwen ZHUANG Guofang MIAO Han LIU Zhiqiang cheng wenyu LI Rong SHANG Peng GONG Jing Ming CHEN Institute of Geography Fujian Normal University Key Laboratory of Humid Subtropical Eco-Geographical Process (Ministry of Education) Fujian Normal University School of Geographical Sciences Fujian Normal University National Land Consolidation Center Ministry of Natural Resources Key Laboratory of Land Consolidation and Rehabilitation Ministry of Natural Resources Key Laboratory of Digital Mapping and Land Information Application Ministry of Natural Resources Department of Geography & Planning University of Toronto Department of Geography The University of Hong Kong

The subtropical region of China possesses abundant forest resources and features a mountainous terrain. Under the implementation of policies such as natural forest protection, the Grain for Green Project, and other initiatives since the beginning of the 21st century, coupled with climate change, the forest resources in this region have undergone significant changes compared to historical periods. In addition, forest resources distributing mainly in mountainous areas also implies that these changes may vary significantly with elevation. To explore the spatiotemporal dynamics of forest distribution in subtropical China since 2000,especially the trend of changes with elevation, we analyzed the data from two land cover products focusing on forest cover and forest types. We used a hierarchical approach, in which coarse-classification forest cover data with relatively small uncertainties impose constraints on forest type data with larger uncertainties, to achieve a reasonable balance between obtaining more details and reducing data uncertainty. We first divided the forest cover data into ‘unchanged' and ‘changed' categories. With the constraints by the forest cover results, we further analyzed the ‘unchanged' and ‘changed' forest types. The results indicated that,since the implementation of ecological engineering and management policies, 54% of the area in the subtropical region had maintained unchanged forest cover attributes over the past 20 years, which implied the good state of ecological environment. The results also showed that dynamic conversions existed in the long term between forests and lands for essential production needs like croplands. The elevational variations of forest cover suggested that the dominant changes came from the conversion between forests and croplands in low-elevation regions below 700 m, the conversion between forests and shrublands in mid-elevation regions of 700–1500 m, and the conversion between forests and grasslands in high-elevation regions above 2000 m. In the regions with unchange

关键词： Subtropical China Land cover Forest cover Forest type Elevational distribution

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The OsWRKY72-OsAAT30/OsGSTU26 module mediates reactive oxygen species scavenging to drive heterosis for salt tolerance in hybrid rice

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Journal of Integrative Plant Biology 2024年第4期66卷 709-730页

作者： Citao Liu Bigang Mao Yanxia Zhang Lei tian Biao Ma Zhuo Chen Zhongwei Wei Aifu Li Ye Shao Gongye cheng Lingling Li wenyu Li Di Zhang Xiaoping Ding Jiangxiang Peng Yulin Peng Jiwai He Nenghui Ye Dingyang Yuan chengcai Chu Meijuan Duan Hunan Provincial Key Laboratory of Stress Biology College of AgricultureHunan Agricultural UniversityChangsha 410128China State Key Laboratory of Hybrid Rice Hunan Hybrid Rice Research CenterChangsha 410125China College of Agriculture South China Agricultural UniversityGuangzhou 510642China State Key Laboratory of Wheat and Maize Crop Science Center for Crop Genome EngineeringCollege of AgronomyHenan Agricultural UniversityZhengzhou 450002China College of Horticulture Fujian Agriculture and Forestry UniversityFuzhou 350002China Department of Computational Medicine and Bioinformatics University of MichiganAnn ArborMI 48109 USA Biobin Data Science Co. Ltd.Changsha 410221China

Hybrid rice(Oryza sativa)generally outperforms its inbred parents in yield and stress tolerance,a phenomenon termed heterosis,but the underlying mechanism is not completely understood.Here,we combined transcriptome,proteome,physiological,and heterosis analyses to examine the salt response of super hybrid rice Chaoyou1000(CY1000).In addition to surpassing the mean values for its two parents(mid-parent heterosis),CY1000 exhibited a higher reactive oxygen species scavenging ability than both its parents(over-parent heterosis or heterobeltiosis).Nonadditive expression and allele-specific gene expression assays showed that the glutathione S-transferase gene OsGSTU26 and the amino acid transporter gene OsAAT30 may have major roles in heterosis for salt tolerance,acting in an overdominant fashion in CY1000.Furthermore,we identified OsWRKY72 as a common transcription factor that binds and regulates OsGSTU26 and OsAAT30.The salt-sensitive phenotypes were associated with the OsWRKY72^(paternal)genotype or the OsAAT30^(maternal)genotype in core rice germplasm varieties.OsWRKY72^(paternal)specifically repressed the expression of OsGSTU26 under salt stress,leading to salinity sensitivity,while OsWRKY72^(maternal)specifically repressed OsAAT30,resulting in salinity tolerance.These results suggest that the OsWRKY72-OsAAT30/OsGSTU26 module may play an important role in heterosis for salt tolerance in an overdominant fashion in CY1000 hybrid rice,providing valuable clues to elucidate the mechanism of heterosis for salinity tolerance in hybrid rice.

关键词： allele-specific gene expression(ASE) heterosis hybrid rice nonadditive effect(NAE) salt tolerance transcriptome and proteome

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Phase evolution process and hydrogen storage performances of V72Ti18Cr10 alloy prepared by Co-precipitation-reduction method

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Progress in Natural Science:Materials International 2022年第4期32卷 407-414页

作者： Yaobin Han Chaoling Wu Qian Wang Derui Sun wenyu cheng Xiangyang Li Yuchi Zhang Xingzhong Cao Yigang Yan Yao Wang Yungui Chen College of Materials Science and Engineering Sichuan University Engineering Research Center of Alternative Energy Materials & Devices Ministry of Education Multi-discipline Research Division Institute of High Energy Physics Chinese Academy of Sciences Institute of New Energy and Low-Carbon Technology Sichuan University

The V72Ti18Cr10alloy was prepared by a co-precipitation-reduction method in order to consume less energy during whole-life alloy manufacturing, and the phase evolution process in hydrogenation/dehydrogenation process was investigated. The structure refinement analysis of the alloy contented with 1 wt% hydrogen after hydrogenation shows that BCC phase, BCC-hydride phase and FCC phase coexisted, but little BCT phase was found. It indicates that the phase evolution process during hydrogenation was BCC→ BCC-hydride→ FCC,nevertheless the formation of BCT phase was restrained. The limited particle sizes of the alloy in the range of 0.1–5 μm and fewer defects than the normal alloy ingot contributed to the suppression of BCT formation. The annealed alloy, which had similar particle sizes with the unannealed alloy, has less unevenness of the compositions than the unannealed alloy, and the annealed alloy showed flatter plateau in the hydrogenation PCT(pressure-composition-temperature) curves. However, the BCT phase in the annealed alloy appeared in its dehydrogenation process owing to the produced defects during the following dehydrogenation and the hydrogenation process. The alloy with the limited particle sizes even in the range from 0.1 μm to 5 μm could not prevent the generation of BCT phase in the dehydrogenation process.

关键词： V-Ti-Cr alloy Co-precipitation-reduction Phase evolution process Hydrogen storage performance

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油用牡丹籽种皮多酚的提取及抗氧化和体外发酵特性

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现代食品科技 2024年第5期40卷 162-170页

作者：孙兆岳崔文玉程安玮湖南农业大学食品科学技术学院湖南长沙410128

采取超声辅助提取油用牡丹籽种皮中的多酚,以多酚提取量为测定指标,通过单因素试验及响应面分析获得最优的工艺条件,进一步测定牡丹籽种皮多酚的抗氧化活性和体外发酵特性。结果表明,超声波提取牡丹籽种皮多酚的最优工艺参数为:乙醇体... 详细信息

采取超声辅助提取油用牡丹籽种皮中的多酚,以多酚提取量为测定指标,通过单因素试验及响应面分析获得最优的工艺条件,进一步测定牡丹籽种皮多酚的抗氧化活性和体外发酵特性。结果表明,超声波提取牡丹籽种皮多酚的最优工艺参数为:乙醇体积分数60%、料液比1:40、超声功率为480 W,提取时间50 min,多酚提取量为83.11 mg GAE/g。牡丹籽种皮多酚的DPPH、ABTS^(+)自由基清除以及FRAP的IC_(50)分别为8.19、5.83、16.46 mg GAE/g,具有良好的抗氧化活性。体外发酵试验证明,牡丹籽壳多酚均可降低正常组和肥胖组中发酵液的pH值,增加短链脂肪酸含量,且对肥胖组的影响更加明显。这表明从油用牡丹籽种皮中分离的多酚具有明显的体外抗氧化活性,有降低肠道体外发酵液pH值,增加短链脂肪酸的功效。

关键词：油用牡丹籽种皮多酚响应面法体外发酵短链脂肪酸

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Organic dye assemblies with aggregation-induced photophysical changes and their bio-applications

Aggregate

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Aggregate 2021年第4期2卷 57-71页

作者： Chendong Ji Liming Lai Pengyu Li Zhen Wu wenyu cheng Meizhen Yin State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing Laboratory of Biomedical MaterialsBeijing University of Chemical TechnologyBeijingChina

Phototheranostics provide a safe,effective,and noninvasive way for the diagnosis and treatment of contemporary diseases,and organic dyes play a vital role.For example,chemical modification endowed dyes with powerful reactive oxygen species or heat generation ability,favoring for photodynamic therapy and photoacoustic(PA)imaging guided photothermal therapy(PTT)of serious diseases.Therefore,photophysical properties manipulation of dyes has become the focus in current dye chemistry research.The development of aggregate science has made great effort to solve this problem.In recent years,a large number of studies have focused on molecular aggregation behavior and its effect on photophysical performance.The most famous example is the discovery of aggregation-induced emission(AIE)phenomenon.Based on AIE theory,more theories for revealing the relationship between molecular aggregation behavior and photophysical properties were proposed and elucidated.The photophysical property changes caused by dye aggregation have become a unique discipline,guiding the development of molecular science and material science.With the help of molecular self-assembly,controllable aggregation of dyes can be realized,and stable nano-theranostic reagents can be obtained.Furthermore,constructing dye assemblies with various photophysical properties will greatly reduce the cost of theranostic reagents,thus,expanding biomedical applications of organic dyes.Therefore,this review focuses on the photophysical characteristic changes caused by dye aggregation and their biological applications including,fluorescence/phosphorescence/PA imaging as well as photodynamic and PTT.This review will provide guidance for the design of organic dyes,the development of controllable aggregation methods,and the construction of multifunctional phototheranostic reagents.

关键词： aggregation-induced photophysical changes fluorescence imaging organic dye assemblies phosphorescence photodynamic therapy photothermal therapy

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边界层高度的不同诊断方法在京津冀及周边地区的适用性分析

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气候与环境研究 2024年第1期29卷 1-12页

作者：程楠黄鹤张文煜张昕宇郑州大学计算机与人工智能学院/地球科学与技术学院郑州450001 天津市气候中心天津300074

利用2016~2021年京津冀及周边地区7个站的探空数据,分析了传统的位温梯度法、改进的位温梯度法、相对湿度梯度法、比湿梯度法和理查森数法5种大气边界层高度的诊断方法在京津冀及周边地区大气边界层高度计算的适用性。结果表明:5种方法... 详细信息

利用2016~2021年京津冀及周边地区7个站的探空数据,分析了传统的位温梯度法、改进的位温梯度法、相对湿度梯度法、比湿梯度法和理查森数法5种大气边界层高度的诊断方法在京津冀及周边地区大气边界层高度计算的适用性。结果表明:5种方法计算的边界层高度差距在40~1000 m,传统的位温梯度法、相对湿度梯度法、比湿梯度法诊断的边界层高度普遍偏高,且存在较大的结构不确定性,理查森数法和改进的位温梯度法诊断的边界层高度偏低,前者的不确定性最小;5种方法在乐亭、北京、太原3个代表站得到的边界层高度具有明显的季节性和季节内差异,两种湿度法在乐亭呈现夏秋高、春冬低的特点,在北京和太原呈现春夏高、秋冬低的特点,其他3种方法在3个站均是春夏高、秋冬低的特点;相对湿度梯度法和比湿梯度法参数不确定性较大,传统的位温梯度法和改进的位温梯度法次之,理查森数法最小;在边界层高度计算结果月均值的时间一致性上,晚上各方法间的相关性明显高于白天,两种湿度法之间的相关系数始终最高,但与另外3种方法间的相关性均较差,理查森数法和改进的位温梯度法相关性较高,传统的位温梯度法因站点不同,与其他方法间的相关性波动较大。

关键词：京津冀大气边界层高度诊断方法适用性

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铈改性净水污泥除磷效能与机理分析

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环境工程学报 2024年第1期18卷 51-62页

作者：程文雨马潇莹陈浩宇陈荣升王东田苏州科技大学环境科学与工程学院苏州215000 苏州科技大学化学与生命科学学院苏州215000

磷酸盐含量是控制水环境质量的重要标准之一,吸附是一种高效、清洁和经济的除磷技术。采用铈改性净水污泥吸附去除磷酸盐,考察了铈负载量、投加量、pH、共存离子等因素对吸附磷酸盐的影响,探讨了可能的吸附机理及吸附材料循环再生能力... 详细信息

磷酸盐含量是控制水环境质量的重要标准之一,吸附是一种高效、清洁和经济的除磷技术。采用铈改性净水污泥吸附去除磷酸盐,考察了铈负载量、投加量、pH、共存离子等因素对吸附磷酸盐的影响,探讨了可能的吸附机理及吸附材料循环再生能力。结果表明,铈改性净水污泥吸附磷酸盐过程符合拟二级动力学和Freundlich吸附等温线,最大吸附量为69.43 mg·g^(-1),吸附速率受内扩散、边界层效应等多重因素的限制。在Cl^(-)、NO_(3)^(-)、CO_(3)^(2-)、SO_(4)^(2-)等共存离子干扰下,铈改性净水污泥具备选择性吸附磷酸盐的能力。在进行5次吸附-解吸循环后,吸附材料对磷酸盐的去除率下降了25.4%。吸附机制主要为磷酸盐与羟基以及含铈基团的静电吸引和配体交换。

关键词：除磷净水污泥铈基吸附剂配体交换

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Atmosphere-free activation methodology for holey graphene/cellulose nanofiber-based film electrode with highly efficient capacitance performance

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Carbon Energy 2023年第1期5卷 233-246页

作者： Heng Wu wenyu Yuan Xiaowen Yuan Laifei cheng Science and Technology on Thermostructural Composite Materials Laboratory Northwestern Polytechnical UniversityXi'anChina Future Fibres Laboratory School of EngineeringComputer and Mathematical SciencesAuckland University of TechnologyAucklandNew Zealand

An efficient chamber-induced activation method was applied for the preparation of holey graphene/cellulose nanofiber-based film with high specific surface area(SSA)and multiple channels through the graphene nanosheets.With the cellulose nanofiber(CNF)simultaneously serving as“dispersing agent,”“spacer,”and“activating agent,”the graphene oxide(GO)nanosheets are perforated by the pyrolysis gas from CNF in the confined space inside the hybrid films,uniformly dispersed,and sandwiched between CNF networks with less agglomeration and restacking.Additionally,we have proved that H2O and H2 are primarily responsible for the activation and etching of GO/CNF film.As the CNF content increases,the mesoporosity of the activated reduced GO/CNF(A-RGO/CNF)film increases,and the graphene nanosheets show more nanopore perforations.Benefitting from the high SSA,high density,moderate mesoporosity,and abundant channels for ion diffusion through the graphene nanosheets,the A-RGO/CNF film exhibits the highest specific capacitance of 323(236)F g^(−1)(F cm^(−3))at 1Ag^(−1).For the A-RGO5/CNF5 film containing half CNF and half GO,an excellent comprehensive electrochemical performance including superior rate performance(208(160)F g^(−1)(F cm^(−3))at 60Ag^(−1))is exhibited.Moreover,the A-RGO5/CNF5 electrode in an all-solid-state flexible symmetric supercapacitor delivers a high specific capacitance of 250(193)F g^(−1)(F cm^(−3))at 1Ag^(−1).This study provides a novel idea for the preparation of holey graphene-based film for supercapacitor electrodes.The strategy of simultaneously employing CNF as“dispersing agent,”“spacer,”and“activating agent”also offers a new vision for the assembly of homogeneous nanohybrid material and the utilization of pyrolysis gas.

关键词： cellulose nanofiber chamber-induced activation holey graphene supercapacitor

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Single-atom catalysts for CO oxidation,CO_(2) reduction,and O_(2) electrochemistry

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Journal of Energy Chemistry 2022年第2期31卷 254-279页

作者： wenyu Yuan Yiyuan Ma Heng Wu Laifei cheng Department of Physics Tokyo Metropolitan UniversityHachiojiTokyo 192-0397Japan Science and Technology on Thermostructural Composite Materials Laboratory Northwestern Polytechnical UniversityXi’an 710072ShaanxiChina

CO_(x)(x=1,2)and O_(2) chemistry play key roles in tackling global severe environmental challenges and energy issues.To date,the efficient selective electrocatalytic transformations of COx-carbon chemicals,and O_(2)-hydrogenated products are still huge challenges.Single-atom catalysts(SACs)as atomic-scale novel catalysts in which only isolated metal atoms are dispersed on supports shed new insights in overcome these obstacles in CO_(x) and O_(2) chemistry,including CO oxidation,CO_(2) reduction reaction(CO_(2)RR),oxygen reduction reaction(ORR),and oxygen evolution reaction(OER).In this review,the unique features and advanced synthesis strategies of SACs from a viewpoint of fundamental synthesis design are first highlighted to guide future strategy design for controllable SAC synthesis.Then,the to-date reported CO_(2)RR,CO oxidation,OER,and ORR mechanism are included and summarized.More importantly,the design principles and design strategies of improving the intrinsic activity,selectivity,and stability are extensively discussed and the engineering strategy is classified as neighbor coordination engineering,metal-atom engineering,and substrate engineering.Via the comprehensive review and summary of state-of-the-art SACs,the synthesis–structure–property–mechanism–design principle relation can be revealed to shed lights into the structural construction of SACs.Finally,we present an outlook on current challenges and future directions for SACs in CO_(x) and O_(2) chemistry.

关键词： Single-atom catalysts CO_(2)reduction reaction CO oxidation Oxygen reduction reaction Oxygen evolution reaction

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