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Detrital-Zircon Evidence for the Origin of the Late Quaternary Loess in Qingzhou,Shandong Province and Its Implications for the Evolution of the Yellow River

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Journal of Earth Science 2022年第1期33卷 205-214页

作者： Yanfei Shen Meiyan Liang Jianxun Wu shuzhen peng Guoqiao Xiao Hubei Key Laboratory of Critical Zone Evolution School of Geography and Information EngineeringChina University of GeosciencesWuhan 430074China State Key Laboratory of Biogeology and Environmental Geology School of Earth SciencesChina University of GeosciencesWuhan 430074China School of Tourism Resources and EnvironmentTaishan UniversityTai'an 271021China

The loess depositions in Shandong Province are important parts of loess records in eastern China,but their origin and genetic linkage between the Yellow River and the Chinese Loess Plateau are still *** paper presents the detrital-zircon evidence for the origin and provenance evolution of the Qingzhou loess in Shandong *** results show that:(1) the Qingzhou loess was sourced from the sandy lands within the North China Plain that were fed by the silty materials from the Chinese Loess Plateau,the mountainous region in central Shandong Province,and the Yanshan and Taihang Mountains;(2) the Qingzhou loess was mainly sourced from the loess materials transported by the Yellow River,and the basal age of the Qingzhou loess indicates the timing of intensified aridification of the North China Plain and integration of the Yellow River was not later than 0.5 Ma;and(3) the provenance and grain-size of the Qingzhou loess underwent a significant transition at ~0.22 Ma,which was related to the expansion of the sandy land within the North China *** results indicate that the origin of the loess on the North China Plain are obviously different from the loess on the Chinese Loess Plateau,and the increase of grain-size and accumulation rate in the loess records on the North China Plain at ~0.22 Ma was due to the environmental deterioration of the eastern China.

关键词： North China Plain loess Pleistocene zircon detrital-zircon Yellow River

Sr-Nd-Pb Isotopic Compositions of the Neogene Eolian Deposits in the Xining Basin and Implications for Their Dust Sources

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Journal of Earth Science 2015年第5期26卷 669-676页

作者： Fangming Zeng Meiyan Liang shuzhen peng Dongmei Yu Shuyuan Xiang Key Laboratory of Salt Lake Resources and Chemistry Qinghai Institute of Salt LakesChinese Academy of Sciences School of Public Administration China University of Geosciences School of Tourism Resources and Environment Taishan University School of Earth Sciences China University of Geosciences

The Neogene eolian deposits in the Xining Basin are valuable archive for studying the evolution of the Asian monsoon system and geomorphic processes of Northwest China. The Neogene eolian deposits that paleomagnetically dated at about 14 Ma probably were sourced from the middle and west Qinghai-Tibetan Plateau（QTP） as indicated by elemental compositions and magnetic properties. This study provides the Sr-Nd-Pb isotopic ratios of different sediments（gravels from the river terraces, Neogene eolian deposits and Quaternary loess） in the Xining Basin. The results show that：（1） Sr-Nd isotopic compositions of terrace gravels are different from those of the Neogene and Quaternary eolian deposits, although the Nd isotope ratios of gravel on the 10 th terrace（T10） and eolian deposits are similar.（2） Pb isotopic compositions of river gravels are obviously different from the eolian deposits in the Xining Basin. However, Pb isotopic compositions of eolian deposits in the basin are similar to those of eolian deposits in the central Chinese Loess Plateau.（3） Sr-Nd-Pb isotope results indicate that the Neogene eolian deposits in the Xining Basin were probably sourced from remote areas outside of the basin by long-distance transportation. The Qaidam Basin is probably an important source area for the eolian deposits in the Xining Basin.

关键词： eolian deposits Qinghai-Tibetan Plateau Sr-Nd-Pb isotope source area

Wild soybean(Glycine soja)transcription factor GsWRKY40 plays positive roles in plant salt tolerance

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The Crop Journal 2024年第3期12卷 766-775页

作者： Minglong Li Man Xue Huiying Ma peng Feng Tong Chen Xiaohuan Sun Qiang Li Xiaodong Ding shuzhen Zhang Jialei Xiao Key Laboratory of Agricultural Biological Functional Genes Northeast Agricultural UniversityHarbin 150030HeilongjiangChina Key Laboratory of Soybean Biology of Chinese Education Ministry Northeast Agricultural UniversityHarbin 150030HeilongjiangChina Department of Plant Science School of Agriculture and BiologyShanghai Jiao Tong UniversityShanghai 200240China College of Life Science Leshan Normal UniversityLeshan 614000SichuanChina Mudanjiang Branch of Heilongjiang Academy of Agricultural Sciences Mudanjiang 157401HeilongjiangChina

Wild soybean(Glycine soja),a relative of cultivated soybean,shows high adaptability to adverse environmental *** identified and characterized a wild soybean transcription factor gene,GsWRKY40,that promotes plant salt ***40 was highly expressed in wild soybean roots and was up-regulated by salt ***40 was localized in nucleus and demonstrated DNA-binding activities but without transcriptional *** and overexpression of GsWRKY40 altered salt tolerance of Arabidopsis *** understand the molecular mechanism of GsWRKY40 in regulating plant salt resistance,we screened a cDNA library and identified a GsWRKY40 interacting protein GsbHLH92 by using yeast two-hybrid *** physical interaction of GsWRKY40 and GsbHLH92 was confirmed by co-immunoprecipitation(co-IP),GST pull-down,and bimolecular fluorescence complementation(BiFC)***,co-overexpression of GsWRKY40 and GsbHLH92 resulted in higher salt tolerance and lower ROS levels than overexpression of GsWRKY40 or GsbHLH92 in composite soybean plants,suggesting that GsWRKY40 and GsbHLH92 may synergistically regulate plant salt resistance through inhibiting ROS ***-PCR data indicated that the expression level of GmSPOD1 gene encoding peroxidase was cooperatively regulated by GsWRKY40 and GsbHLH92,which was confirmed by using a dual luciferase report system and yeast one-hybrid *** study reveals a pathway that GsWRKY40 and GsbHLH92 collaboratively up-regulate plant salt resistance through impeding GmSPOD1 expression and reducing ROS levels,providing a novel perspective on the regulatory mechanisms underlying plant tolerance to abiotic stresses.

关键词： Wild soybean Transcription factor Salt stress ROS

Carbon isotopic records in paleosols over the Pliocene in Northern China: Implication on vegetation development and Tibetan uplift

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Chinese Science Bulletin 2002年第8期47卷 687-690页

作者： JIANG Wenying peng shuzhen HAO Qingzhen LIU Dongsheng(LIU Tungsheng) Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China Tai’an Teachers College Tai’an 271000China

Carbon isotopic composition of pedogenic carbonate can be used to estimate the proportion of C4 and C3 plants. Here we present carbon isotopic data of carbonate in a red earth section at Xifeng, central Loess Plateau. Results show that C4 vegetation increased in -4.4 Ma B.P., stabilized between 4.0 and 3.0 Ma B.P. The character and timing of C4 expansion on the Loess Plateau are similar, but different with other localities, e.g. Pakistan and Africa, implying that regional climate changes were main factors driving the expansion of C4 plants. This event is comparable in timing with increased aridity evidenced by Xifeng grain size and North Pacific eolian dust records. Therefore we argue that the Pliocene expansion of C4 plants in northern China might have been caused by the increased aridity, which in turn might be related to rapid uplift of the Tibetan Plateau.

关键词： red earth carbon isotope C3/C4 plants aridity Tibetan uplift.

临床路径的制订与管理系列研究之一:临床路径的制订理论、方法、流程与建议

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医学新知 2024年第2期34卷 179-190页

作者：易烨林珂雯娄佳奡彭淑桢靳英辉冯佳佳张潘林丽开王行环武汉大学中南医院循证与转化医学中心武汉430071 武汉大学医学部武汉430071 武汉大学中南医院护理部武汉430071 武汉大学医院管理研究所武汉430071

临床路径的制订和应用是一个动态改进和发展的过程,临床路径制订原理来源于多个学科,同时在临床路径的临床应用中不断丰富完善。临床路径制订的方法学流程和报告学标准在国际上尚未统一。本文通过系统检索和筛选临床路径制订文献,最终确... 详细信息

临床路径的制订和应用是一个动态改进和发展的过程,临床路径制订原理来源于多个学科,同时在临床路径的临床应用中不断丰富完善。临床路径制订的方法学流程和报告学标准在国际上尚未统一。本文通过系统检索和筛选临床路径制订文献,最终确定5篇完整报告临床路径制订全过程的方法学文献,对其制订流程进行思路梳理,并综合其余文献分析,提出临床路径制订流程建议并进行讨论,以期为医院管理者制订临床路径提供参考。

关键词：临床路径制订与管理制订理论方法流程

Magnetostratigraphy and provenance of the Qingzhou loess in Shandong province

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Journal of Arid Land 2011年第3期3卷 184-190页

作者： shuzhen peng LiJun ZHU GuoQiao XIAO YanSong QIAO ZhiDong GAO DongDong CHEN Department of Tourism Resources and Environment Taishan University Taian 271021 China College of Urban and Environment Sciences of Shanxi Normal University Linfen 041000 China Key Laboratory of Biogeology and Environmental Geology of Ministry of Education China University of Geosciences Wuhan 430074 China Institute of Geomechanics Chinese Academy of Geological Sciences Beijing 100081 China

Loess deposits with varying thickness are widely distributed on the intermontane valleys and piedmont zones on the northern side of the central Shandong mountainous regions. However, the basal ages and material resources of the loess deposits are not clear. The paper studied the Qingzhou loess profile in Shandong with magnetostratigraphic and optical stimulated luminescence （OSL） methods and further investigated its main provenances with the mineralogical methods. The magnetostratigraphic results showed that the Brunhes/Matuyama （B/M） reversal boundary was not recognized, suggesting a basal age younger than 0.78 Ma. Extrapolations by sedimentation rates, based on the upper part depositional rate from the OSL age, the basal age of the Qingzhou loess is about 0.5 Ma. Until now, older loess deposits have not been reported on the northern side of the central Shandong mountainous regions. The results of the paper indicate that the loess deposits in this area might have strated from the Middle Pleistocene. The basal age of Qingzhou loess is approximately synchronous with the Xiashu loess in the middle-lower reaches of Yangtze River. Major components of clay minerals in the Qingzhou profile are dominated by illite. Other clay mineral compositions are mainly smectite, chlorite and kaolinite, which are similar with the Xifeng loess in the Loess Plateau. However, the contents of smectite and the ratios of illite and kaolinte in the Qingzhou loess samples are higher than those in the Xifeng loess samples of the Loess Plateau, indicating that the loess in the northern side of the central Shandong mountainous regions has different sources from that of the loess deposits in the Loess Plateau. The clay mineral analysis further reinforces the earlier conclu- sion that the marine strata exposed in the Laizhou Bay and the fluvial plain of the lower reaches of Yellow River during the glacier periods are the main material sources for the Qingzhou loess deposits, which is an indicator t

关键词： Loess magnetostratigraphy sedimentology material provenance Qingzhou

临床路径的制订与管理系列研究之二:临床路径的信息化管理

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医学新知 2024年第3期34卷 322-329页

作者：林珂雯娄佳奡彭淑桢易烨靳英辉冯佳佳张潘熊浩贺谦王行环林丽开武汉大学医学部武汉430071 武汉大学中南医院护理部武汉430071 武汉大学中南医院循证与转化医学中心武汉430071 武汉大学医院管理研究所武汉430071 武汉大学中南医院信息中心武汉430071

信息化是临床路径发展的必然趋势,基于医院信息系统可实现临床路径信息化管理,并构建临床路径决策诊疗知识库,进而支持临床路径自适应性动态调整,是临床路径信息化管理的核心。本文对临床路径信息化管理的建设基础及临床路径知识库的构... 详细信息

信息化是临床路径发展的必然趋势,基于医院信息系统可实现临床路径信息化管理,并构建临床路径决策诊疗知识库,进而支持临床路径自适应性动态调整,是临床路径信息化管理的核心。本文对临床路径信息化管理的建设基础及临床路径知识库的构建进行阐述,以期从信息化管理的角度为临床路径的制订和管理提供参考。

关键词：临床路径制订与管理信息化知识库

Effects of microtopography on spatial point pattern of forest stands on the semi-arid Loess Plateau,China

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Journal of Arid Land 2015年第3期7卷 370-380页

作者： WeiJun ZHAO Yan ZHANG QingKe ZHU Wei QIN shuzhen peng Ping LI YanMin ZHAO Huan MA Yu WANG Key Laboratory of Tourist Resources and Environment in Colleges and Universities of Shandong Province Taishan University Forestry Ecological Engineering Research Center (Ministry of Education) Beijing Forestry University Department of Sedimentation China Institute of Water Resources and Hydropower Research Key Laboratory of Forest Ecology and Environment of State Forestry Administration Institute of Forest EcologyEnvironment and ProtectionChinese Academy of Forestry

Microtopography may affect the distribution of forests through its effect on rain redistribution and soil water distribution on the semi-arid Loess Plateau,*** this study,we investigated the characteristics of microtopography on two shady slopes（slope A,5 hm2,uniform slope;slope B,5 hm2,microtopography slope） and surveyed the height,the diameter at breast height and the location（x,y coordinates） of all selected individual trees（Robinia pseudoacacia Linn.,Pyrus betulifolia Bunge,Populus hopeiensis Hu ＆ Chow,Armeniaca sibirica Lam.,Populus simonii *** Ulmus pumila Linn.） on slope A and slope B in the watersheds of Wuqi county,Shaanxi ***,the effects of microtopography on the spatial pattern of forest stands were analyzed using Ripley＇s K（r） *** results showed that：（1） The maximal aggregation radiuses of the tree species on the uniform slope（slope A） were larger than 40 m,whereas those of the tree species on the microtopography slope（slope B） were smaller than 30 m.（2） On slope B,the spatial association of *** with ***,***,*** and *** varied from being strongly negative to positive at microtopography *** spatial association of Populus hopeiensis Hu ＆ Chow with *** also varied from being strongly negative to positive at microtopography ***,there was no spatial association between *** and ***,*** and ***,*** and ***,*** and ***,*** and ***,*** and ***,*** and ***,*** and ***,and *** and *** slope A,the spatial association between tree species were strongly *** results suggest that microtopography may shape tree distribution patterns on the semi-arid Loess Plateau.

关键词： microtopography univariate spatial patterns aggregation negative association positive association

基于马克思再生产理论的乡村旅游高质量发展研究

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山东社会科学 2022年第10期 111-117页

作者：彭淑贞刘艳梅吕臣泰山学院旅游学院山东泰安271000 中共中央党校(国家行政学院) 经济学教研部北京100089 中国旅游研究院北京100005

乡村旅游高质量发展是实施乡村振兴战略的重要支点。新时代,运用马克思再生产四环节的辩证关系原理分析我国乡村旅游发展实践,从而牢牢把握“供给侧改革”主线,加强“需求侧改革”牵引,破解分配难题,构建畅通的交换机制,具有重要的理论... 详细信息

乡村旅游高质量发展是实施乡村振兴战略的重要支点。新时代,运用马克思再生产四环节的辩证关系原理分析我国乡村旅游发展实践,从而牢牢把握“供给侧改革”主线,加强“需求侧改革”牵引,破解分配难题,构建畅通的交换机制,具有重要的理论和实践价值。本文从马克思再生产理论的生产、分配、交换和消费四个环节的内在逻辑关系出发,剖析了新时代乡村旅游发展存在的问题,从强化“供给侧改革”、构建多元化主体利益分配机制、主动融入“双循环”战略、加强“需求侧改革”等四个方面提出新时代乡村旅游高质量发展的对策与建议。

关键词：马克思再生产理论乡村旅游高质量发展