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Regulation effects of water and nitrogen on yield,water,and nitrogen use efficiency of wolfberry

Journal of Arid Land 2024年第1期16卷 29-45页

作者： GAO Yalin QI Guangping MA Yanlin YIn Minhua WAnG Jinghai WAnG Chen TIAn Rongrong xiao feng LU Qiang WAnG Jianjun College of Water Conservancy and Hydropower Engineering Gansu Agricultural UniversityLanzhou 730070China Jingtaichuan Electric Power Irrigation Water Resource Utilization Center in Gansu Province Baiyin 730900China

Wolfberry(Lycium barbarum L.)is important for health care and ecological ***,it faces problems of low productivity and resource utilization during *** reas.nable models for water and nitrogen management is important for solving these *** on field trials in 2021 and 2022,this study analyzed the effects of controlling soil water and nitrogen application levels on wolfberry height,stem diameter,crown width,yield,and water(WUE)and nitrogen use efficiency(nUE).The upper and lower limits of soil water were controlled by the percentage of soil water content to field water capacity(θ_(f)),and four water levels,i.e.,adequate irrigation(W0,75%-85%θ_(f)),mild water deficit(W1,65%-75%θ_(f)),moderate water deficit(W2,55%-65%θ_(f)),and severe water deficit(W3,45%-55%θ_(f))were used,and three nitrogen application levels,i.e.,no nitrogen(n0,0 kg/hm^(2)),low nitrogen(n1,150 kg/hm^(2)),medium nitrogen(n2,300 kg/hm^(2)),and high nitrogen(n3,450 kg/hm^(2))were *** results showed that irrigation and nitrogen application significantly affected plant height,stem diameter,and crown width of wolfberry at different growth stages(Pnd their maximum values were observed in W1n2,W0n2,and W1n3 *** weight per plant and yield of wolfberry first increased and then decreased with increas.ng nitrogen application under the same water *** weight per hundred grains and dry weight percentage increased with increas.ng nitrogen application under W0 ***,under other water treatments,the values first increased and then decreased with increas.ng nitrogen *** and its component of wolfberry first increased and then decreased as water deficit increased under the same nitrogen *** water use efficiency(IWUE,8.46 kg/(hm^(2)·mm)),WUE(6.83 kg/(hm^(2)·mm)),partial factor productivity of nitrogen(PFPn,2.56 kg/kg),and nUE(14.29 kg/kg)reached their highest values in W2n2,W1n2,W1n2,and W1n1 treatments.R

关键词： water deficit growth characteristics yield water and nitrogen use efficiency principal component analysis

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Understanding the mechanisms and potential pathways of soil carbon sequestration from the biogeochemistry perspective

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science China Earth sciences 2024年第11期67卷 3386-3396页

作者： xiaojuan feng Guohua DAI Ting LIU Juan JIA Erxiong ZHU Chengzhu LIU Yunpeng ZHAO Ya WAnG Enze KAnG Jun xiao Wei LI state Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences China national Botanical Garden College of Resources and Environment University of Chinese Academy of Sciences Department of Earth sciences National Natural Science Foundation of China

soil carbon sequestration is listed by the United nations Framework Convention on Climate Change as one of the key ways to achieve long-term “carbon neutrality” in the context of global warming. soil carbon sequestration is a complex biogeochemical process that involves plants, microbes, and rock minerals at its core. Yet, its regulation mechanisms and promotion pathways remain unclear. This paper reviews recent progress in the related domestic and international research and provides an overview of the key processes and mechanisms of soil carbon sequestration. The main pathways for enhancing soil carbon sequestration(including plant inputs, mineral protection, microbial transformation, and rock weathering) are summarized. The paper also discusses and s.nthesizes how advanced biogeochemical methods and technologies may be employed to explore soil carbon sequestration mechanisms and potentials. The overall aim of this review is to improve our understanding of soil carbon sequestration as a nature-based solution to combatting climate change from the biogeochemistry perspective, and to highlight the role of fundamental research in Earth sciences in helping to achieve China's carbon neutrality goals.

关键词： Carbon neutrality Plant input Microbial carbon pump Mineral protection Rock weathering

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Geophysical prediction of organic matter abundance in source rocks based on geochemical analysis:A case study of southwestern Bozhong sag,Bohai sea,China

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Petroleum science 2024年第1期21卷 31-53页

作者： Xiang Wang Guang-Di Liu xiao-Lin Wang Jin-feng Ma Zhen-Liang Wang Fei-Long Wang Ze-Zhang s.ng Chang-Yu Fan state Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China College of Geosciences China University of Petroleum(Beijing)Beijing102249China state Key Laboratory of Continental Dynamics Northwest UniversityXi'an710069ShaanxiChina Department of Geology Northwest UniversityXi'an710069ShaanxiChina CnOOC Tianjin Branch Company Tianjin300459China

The Bozhong sag is the largest petroliferous sag in the Bohai Bay Bas.n,and the source rocks of Paleogene Dongying and shahejie Formations were buried *** of the drillings were located at the structural high,and there were few wells that met good quality source rocks,so it is difficult to evaluate the source rocks in the study area precisely by geochemical analysis *** on the Rock-Eval pyrolysis,total organic carbon(TOC)testing,the organic matter(OM)abundance of Paleogene source rocks in the southwestern Bozhong sag were evaluated,including the lower of second member of Dongying Formation(E_(3)d2L),the third member of Dongying Formation(E_(3)d_(3)),the first and second members of shahejie Formation(E_(2)s_(1+2)),the third member of shahejie Formation(E_(2)s_(3)).The results indicate that the E_(2)s_(1+2)and E_(2)s_(3)have better hydrocarbon generative potentials with the highest OM abundance,the E_(3)d_(3)are of the second good quality,and the E_(3)d2L have poor to fair hydrocarbon generative ***,the well logs were applied to predict TOC and residual hydrocarbon generation potential(s_(2))based on the sedimentary facies classification,us.ngΔlogR,generalizedΔlogR,logging multiple linear regression and BP neural network *** various methods were compared,and the BP neural network method have relatively better prediction *** on the pre-stack simultaneous inversion(P-wave impedance,P-wave velocity and density inversion results)and the post-stack seismic attributes,the three-dimensional(3D)seismic prediction of TOC and s_(2)was carried *** results show that the seismic near well prediction results of TOC and s_(2)based on seismic multi-attributes analysis correspond well with the results of well logging methods,and the plane prediction results are identical with the sedimentary facies map in the study *** TOC and s_(2)values of E_(2)s_(1+2)and E_(2)s_(3)are higher than those in E_(3)d_(3)and E_(3)d_(2)L,basicall

关键词： Total organic carbon(TOC) Residual hydrocarbon generation potential(s_(2)) Geophysical prediction seismic attribute Bozhong sag Bohai Bay Bas.n

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Urgent one-stage endoscopic treatment for choledocholithiasis related moderate to severe acute cholangitis: A propensity scorematched analysis

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World Journal of Gastroenterology 2024年第15期30卷 2118-2127页

作者： Yang Zhou Yin-Qiu Zhang shuai-Jing Huang Yan Liang xiao Liang Masoom Wali Ya-Dong feng Department of Gastroenterology Zhongda HospitalSchool of MedicineSoutheast UniversityNanjing 210009Jiangsu ProvinceChina Department of Gastroenterology BenQ Medical CenterThe Affiliated BenQ Hospital of Nanjing Medical UniversityNanjing 210019Jiangsu ProvinceChina

BACKGROUnD During emergency endoscopic retrograde cholangiopancreatography(ERCP),the safety and feasibility of performing one-stage endoscopic treatment for patients with acute cholangitis(AC)due to choledocholithiasis are *** To investigate the safety and feasibility of one-stage endoscopic treatment for moderate to severe *** We enrolled all patients diagnosed with moderate to severe cholangitis due to common bile duct stones from January 2019 to July *** outcomes were compared in this study between patients who underwent ERCP within 24 h and those who underwent ERCP 24 h later,employing a propensity score(Ps)*** primary outcomes were intensive care unit(ICU)admission rates,ICU length of stay,and duration of antibiotic *** In total,we included 254 patients and categorized them into two groups based on the time elapsed between admission and intervention:The urgent group(≤24 h,n=102)and the elective group(>24 h,n=152).ninety-three pairs of patients with similar characteristics were selected by Ps *** urgent ERCP group had more ICU admissions(34.4%vs 21.5%,P=0.05),shorter ICU stays(3 d vs 9 d,Pntibiotic use(6 d vs 9 d,Pnd shorter hospital stays(9 d vs 18.5 d,Pno significant differences observed in adverse events,in-hospital mortality,recurrent cholangitis occurrence,30-d readmission rate or 30-d *** Urgent one-stage ERCP provides the advantages of a shorter ICU stay,a shorter duration of antibiotic use,and a shorter hospital stay.

关键词： Acute cholangitis Endoscopic retrograde cholangiopancreatography One-stage treatment Optimal time

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systematic Evaluation of Guidelines for the Diagnosis and Treatment of Hepatitis E Virus Infection

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Journal of Clinical and Translational Hepatology 2024年第8期12卷 739-749页

作者： Ting Gu Cai-Ying Zheng Yan-Qin Deng xiao-feng Yang Wei-Min Bao Ying-Mei Tang Department of Gastroenterology Second Affiliated Hospital of Kunming Medical UniversityKunming Medical UniversityKunmingYunnanChina second Affiliated Hospital of Kunming Medical University KunmingYunnanChina Department of Colorectal surgery The First People’s Hospital of Yunnan ProvinceKunmingYunnanChina

Background and Aims:The hepatitis E virus(HEV)is a zoonotic disease,and infection with HEV in humans primarily causes acute infections and can progress to chronic manifestation in immunocompromised *** the past decade,guidelines for diagnos.ng and treating HEV infection have been *** study aimed to systematically assess the quality of current guidelines for diagnos.ng and treating HEV infection,and we analyzed the differences in guideline quality and primary recommendations and explored possible reas.ns for these ***:Guidelines published between 2013 and 2022 were searched,and studies were identified us.ng selection *** study assessed the quality of the included guidelines us.ng the Appraisal of Guidelines for Research and Evaluation tool,extracted the primary recommendations in the guidelines,determined the highest level of evidence supporting the recommendations,and reclassified the evidence us.ng the Oxford Centre for Evidence-Based Medicine grading ***:seven guidelines were included in the final *** quality of the guidelines varied *** discrepancies may have been caused by the lack of external experts,the failure to consider influencing factors in guideline application,and the lack of consideration of the public’s *** of the heterogeneity in primary recommendations revealed differences in algorithms for managing chronic HEV infection,the dosage of ribavirin,and a low level of evidence supporting the primary ***:Guideline quality and primary recommendations vary *** by guideline developers and researchers would facilitate updating and applying guidelines for diagnos.ng and treating HEV infection.

关键词： Hepatitis E virus Guidelines Diagnosis Treatment systematic Evaluation

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Patterns and drivers of avian taxonomic and phylogenetic beta diversity in China vary across geographical backgrounds and dispersal abilities

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Zoological Research 2024年第1期45卷 125-135页

作者： Jian-Chao Liang Zhi-feng Ding Chun-Lin Li Yi-Ming Hu Zhi-Xin Zhou Gan-Wen Lie xiao-nan niu Wen-Bin Huang Hui-Jian Hu Xing-feng si Guangdong Key Laboratory of Animal Conservation and Resource Utilization Guangdong Public Laboratory of Wild Animal Conservation and UtilizationInstitute of ZoologyGuangdong Academy of SciencesGuangzhouGuangdong 510260China school of Resources and Environmental Engineering Anhui UniversityHefeiAnhui 230601China Guangdong Eco-Engineering Polytechnic GuangzhouGuangdong 510520China Huizhou Institute of Forestry(Huizhou Botanical Garden Management service Center) HuizhouGuangdong 516001China Administration of national nature Reserve for Marine Ecology of Guangdong nanpeng Islands ShantouGuangdong 515900China Zhejiang Zhoushan Archipelago Observation and Research station Institute of Eco-ChongmingZhejiang Tiantong Forest Ecosystem National Observation and Research StationSchool of Ecological and Environmental SciencesEast China Normal UniversityShanghai 200241China

Geographical background and dispersal ability may strongly influence assemblage dissimilarity;however,these aspects have generally been overlooked in previous large-scale beta diversity ***,we examined whether the patterns and drivers of taxonomic beta diversity(TBD)and phylogenetic beta diversity(PBD)of breeding birds in China vary across(1)regions on both sides of the Hu Line,which demarcates China’s topographical,climatic,economic,and social patterns,and(2)species with different dispersal *** and PBD were calculated and partitioned into turnover and nestedness components us.ng a moving window *** repres.nting climate,habitat heterogeneity,and habitat quality were employed to evaluate the effects of environmental *** distance was considered to assess the impact of dispersal *** partitioning analysis was applied to assess the relative roles of these *** general,the values of TBD and PBD were high in mountainous areas and were largely determined by environmental ***,different dominant environmental filters on either side of the Hu Line led to divergent beta diversity ***,climate-driven species turnover and habitat heterogeneity-related species.nestedness dominated the regions east and west of the line,***,bird species with stronger dispersal ability were more susceptible to environmental filtering,resulting in more homogeneous *** results indicated that regions with distinctive geographical backgrounds may pres.nt different ecological factors that lead to divergent assemblage dissimilarity patterns,and dispersal ability determines the response of assemblages to these ecological *** a s.ngle universal explanation for the observed pattern without considering these aspects may lead to simplistic or incomplete ***,a comprehensive understanding of large-scale beta diversity patterns and effective pla

关键词： Beta diversity Environmental filtering Dispersal limitation Hu Line species dispersal ability Breeding birds

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Profound loss of microbial necromass carbon in permafrost thaw-subsidence in the central Tibetan Plateau

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Advances in Climate Change Research 2024年第4期15卷 647-657页

作者： Wen-Ting ZHOU Quan-Lian LI shi-Chang KAnG xiao-Dong WU Tian MA xiao-Bo WU Xin XIOnG Tanuj sHUKLA Maheswar RUPAKHETI Dipesh RUPAKHETI Da-He QIn Xiu-feng YIn Cryosphere Research station on the Qinghai-Tibet Plateau State Key Laboratory of Cryospheric ScienceNorthwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China Key Laboratory of Cryospheric science and Frozen soil Engineering Norhwest Instiute of Eco-Evironment and ResourcesChinese Academy of Scienes Lanzhou 730000China University of Chinese Academy of sciences Beijing 100049China state Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems and College of Pastoral Agriculture Science and TechnologyLanzhou UniversityLanzhou730020China Lushan Botanical Garden Chinese Academy of SciencesJiujiang 332900China Research Institute for sustainability-Helmholtz Centre Potsdam Potsdam 14467Germany Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China

Climate warming is caus.ng rapid permafrost degradation,including thaw-induced subsidence,potentially resulting in heightened carbon ***,our understanding of the levels and variations of carbon components in permafrost,particularly during the degradation process,remains *** uncertainties aris.ng from this process lead to inaccurate assessments of the climate effects during permafrost *** vast expanses of permafrost in the Tibetan Plateau,there is limited research available on sOC components,particularly in the central Tibetan *** remarkable variations in hydrothermal conditions across different areas of the Tibetan Plateau,the existing limited studies make it challenging to assess the overall sOC components in the permafrost across the Tibetan Plateau and simulate their future *** this study,we examined the properties of soil organic carbon(sOC)and microbial necromass carbon(MicrobialnC)in a repres.ntative permafrost thaw-subsidence area at the southern edge of continuous permafrost in the central Tibetan *** results indicate that prior to the thaw-subsidence,the permafrost had a sOC content of 72.68±18.53 mg g^(-1),with MicrobialnC accounting for 49.6%.The thaw-subsidence of permafrost led to a 56.4%reduction in sOC,with MicrobialnC accounting for 70.0%of the lost *** constitutes the primary component of permafrost sOC,and it is the main component that is lost during thaw-subsidence *** in MicrobialnC are primarily correlated with factors pH,plant input,and microbial *** pres.nt study holds crucial implications for both the ecological and biogeochemical processes associated with carbon release from permafrost,and it furnishes ess.ntial data necessary for modeling the global response of permafrost to climate *** on this study and previous research,permafrost thawing in the Tibetan Plateau causes substantial loss of ***,there's remarkable heterogeneit

关键词： Tibetan Plateau Thaw-subsidence soil organic carbon Microbial necromass carbon Amino sugars

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Four decades of full-scale nitrous oxide emission inventory in China

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national science Review 2024年第3期11卷 137-149页

作者： Minqi Liang Zheyan Zhou Peiyang Ren Han xiao Xu-Ri Zhongmin Hu shilong Piao Hanqin Tian Qing Tong feng Zhou Jing Wei Wenping Yuan school of Atmospheric sciences Guangdong Province Data Center of Terrestrial and Marine Ecosystems Carbon Cycle Sun Yat-sen University state Key Laboratory of Tibetan Plateau Earth system Resources and Environment Institute of Tibetan Plateau Research Chinese Academy of Sciences Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province Hainan University s.no-French Institute for Earth system science College of Urban and Environmental SciencesPeking University schiller Institute for Integrated science and society Department of Earth and Environmental Sciences Boston College Institute of Energy Environment and Economy Tsinghua University southern Marine science and Engineering Guangdong Laboratory(Zhuhai)

China is among the top nitrous oxide（n2O）-emitting countries, but existing national inventories do not provide full-scale emissions including both natural and anthropogenic sources. We conducted a four-decade（1980–2020） of comprehensive quantification of Chinese n2O inventory us.ng empirical emission factor method for anthropogenic sources and two up-to-date process-based models for natural sources. Total n2O emissions peaked at 2287.4（1774.8–2799.9） Gg n2O yr-1in 2018, and agriculture-developed regions, like the East, northeast, and Central, were the top n2O-emitting regions. Agricultural n2O emissions have started to decrease after 2016 due to the decline of nitrogen fertilization applications, while, industrial and energetic sources have been dramatically increas.ng after 2005. n2O emissions from agriculture, industry,energy, and waste repres.nted 49.3%, 26.4%, 17.5%, and 6.7% of the anthropogenic emissions in 2020,respectively, which revealed that it is imperative to prioritize n2O emission mitigation in agriculture,industry, and energy. natural n2O sources, dominated by forests, have been steadily growing from 317.3（290.3–344.1） Gg n2O yr-1in 1980 to 376.2（335.5–407.2） Gg n2O yr-1in 2020. Our study produces a Full-scale Annual n2O dataset in China（FAn2020）, providing emergent counting to refine the current national n2O inventories.

关键词： nitrous oxide four decades anthropogenic sources natural sources

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nanopore design of sulfur doped hollow carbon nanospheres for superior potassium-ion battery anodes

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Rare Metals 2024年第5期43卷 2103-2114页

作者： Zhen-Dong Liu Hui-Yan feng Yu-Chen Wang Fei Wang Yue Liu Jian-xiao Yang Yue Gu Jun Tan Chong Ye Cheng-Zhi Zhang Ji Hua Laboratory Foshan 528000China school of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology College of Materials Science and EngineeringHunan UniversityChangsha 410082China

sulfur doped carbonaceous materials are promis.ng anodes for potassium-ion batteries because of their ability to bridge active sites and induce C/s electron coupling,resulting in increased ion storage capacitance However,the large potassium ions could cause significant volume expansion and structure collapse during operation in sulfur doped carbonaceous anodes,which lead to rapidly capacity sacrifice during long-term *** design for anchoring sulfur atom in carbon skeleton is a novel way to alleviate the structure collapse and maintain the cycling ***,this study developed a controlled nanopore and sulfur doped carbon sphere structure(s.nPHCss).In potassium-ion batteries s.nPHCss anode demonstrated exceptional performance with a high reversible capacity of 247 mAh·g^(–1)after 50 cycles at 0.2 A·g^(–1)and delivered a long cycle stability of 600 cycles at a high current density of 1.0 A·g^(–1).Interconnected nanopores and doped sulfur structure not only expand the accumulation space and offer ample active sites for diffusion and adsorption of potassium ions,but also build stable channels through nanopore structure to ensure the cyclic *** finding provides a fundamental theory for designing nanopore structures and introducing sulfur doped carbonaceous materials to enhance capacitive potassium storage and long cycle stability.

关键词： nanopore Carbon materials sulfur doping Anode Potassium-ionbatteries

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ZnGa_(2)s_(4):an infrared nonlinear optical material with large second-harmonic generation response and wide band gap

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Rare Metals 2024年第1期43卷 395-401页

作者： Chen-Yang Zhang xiao-nan niu Yan-feng Wei shu-Xing Zhou Da-Qing Yang Ying Wang Jian Wang Bing-Bing Zhang College of Chemistry and Materials science Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of EducationState Key Laboratory of New Pharmaceutical Preparations and ExcipientsHebei UniversityBaoding 071002China Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and ScienceXiangyang 441053China Hubei Longzhong Laboratory Xiangyang 441000China Department of Chemistry and Biochemistry Wichita State UniversityKansas 67260USA

High-performance nonlinear optical(nLO)crystals are crucial devices to convert wavelength of solid-state *** play an indispensable role in the research of infrared nLO *** this work,ternary chalcogenide ZnGa_(2)s_(4) ... 详细信息

关键词： optical nonlinear harmonic

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