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房山区口儿村沟“23·7”暴雨水毁修复建设分析

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中国水土保持 2025年第1期 57-59,85页

作者：张焜曹振胡晓静李卓凌王庆邢梦璇北京市水科学技术研究院北京100048 北京市水利规划设计研究院北京100048 北京市房山区水务局北京102442 河海大学港口海岸与近海工程学院江苏南京210098

“23·7”特大暴雨引发山洪和流域洪水,北京西部山区受灾严重。以房山区口儿村小流域为例,通过收集资料和实地调查,应用水文手册分析降雨、洪水特征,结合损毁及成因分析提出了按照小流域“生态修复区、生态治理区和生态保护区”三道防线... 详细信息

“23·7”特大暴雨引发山洪和流域洪水,北京西部山区受灾严重。以房山区口儿村小流域为例,通过收集资料和实地调查,应用水文手册分析降雨、洪水特征,结合损毁及成因分析提出了按照小流域“生态修复区、生态治理区和生态保护区”三道防线,兼顾防洪安全、沟道自然形态与生态功能,因地制宜、因害设防的修复建设思路,以及科学布设谷坊坝、实施梯田整修、加强沟道治理、营造缓冲区等具体修复建议。

关键词： “23·7”暴雨小流域水毁修复房山区

Constructing an effective evaluation system to identify doctors’research capabilities

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Health Care Science

Health Care Science 2024年第1期3卷 67-72页

作者： xiaojing hu human Resources Department Peking University First HospitalBeijingChina

1|INTRODUCTION The events of the coronavirus disease 2019 pandemic have emphasized the indispensable role of doctors in promoting public health and well-being[1].Although medicine and health care are being transformed by technological advances,such as artificial intelligence,big data,genomics,precision medicine,and telemedicine,doctors continue to play a critical role in providing health care.

关键词： doctor evaluation publication health policy health research human resources

Coupling changes of soil functional gene abundances and extracellular enzyme activities across the diagnostic horizons of agricultural Isohumosols

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Pedosphere 2024年第3期34卷 540-552页

作者： Zhuxiu LIU Haidong GU xiaojing hu Zhenhua YU Yansheng LI Junjie LIU Jian JIN Xiaobing LIU Guanghua WANG State Key Laboratory of Black Soils Conservation and Utilization Northeast Institute of Geography and AgroecologyChinese Academy of SciencesHarbin 150081(China) University of Chinese Academy of Sciences Beijing 100049(China)

Soil functional microbial taxa and extracellular enzymes are involved in a variety of biogeochemical cycling *** many studies have revealed the vertical change patterns of microbial communities along soil profile,the general understanding of the coupling changes in the functional gene abundances(FGAs)and extracellular enzyme activities(EEAs)in soil profiles is still limited,which hinders us from revealing soil ecosystem ***,we comparatively investigated the FGAs and EEAs in the diagnostic A,B,and C horizons of soil profiles obtained from two suborders of Isohumosols(Mollisols),Ustic and Udic Isohumosols,in Northeast China based on quantitative real-time polymerase chain reaction and standard fluorometric techniques,*** distribution patterns of both FGAs and EEAs significantly distinguished by the two soil suborders and were also separated from A to C ***,the variations of EEAs and FGAs were greater in Udic Isohumosols compared to Ustic Isohumosols along soil profiles,and greater changes were observed in C horizon than in A *** FGAs and EEAs correspondently decreased along the soil ***,when normalized by soil organic carbon,the specific EEAs significantly increased in deep soil horizons,suggesting that microorganisms will input more resources to the production of enzymes to ensure microbial nutrient requirements under resource *** importantly,we revealed that soil microbial nutrient demands were limited by carbon(C)and phosphorus(P),and the C and P limitations significantly increased along soil profiles with a greater C limitation observed in Ustic Isohumosols than in Udic ***,our findings provided solid evidence showing the links between FGAs,EEAs,and microbial nutrient limitations,which would be helpful for a better understanding of the ecosystem processes in soil profiles.

关键词： ecoenzymatic stoichiometry microbial nutrient limitation microbial nutrient requirement Mollisols soil ecosystem process soil profile

Cataloging from digitization to datafication

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Journal of Library Science in China 2019年 156-157页

作者： hu xiaojing 不详

In the past decade,the great change has taken place in the field of cataloging from theoretical models and standards to applications since the invention of Machine Readable Cataloging(MARC).This change is directly related to linked data technology and can be summarized as cataloging from digitization to datafication,i.e.,bibliographic data from machine-readable to machine-actionable for integrating into the web.

关键词： Cataloging digitization datafication

Study on the Public Policy Process of Urban Planning of Henan Province

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International Journal of Technology Management 2016年第11期 56-58页

作者： hu xiaojing Luoyang Urban Planning and Architecture Design Research Institute Co. Ltd

Along with the development progress of the economy in Central China, there are new breakthroughs achieved by Henan province in the public policy making in the urban planning. In Henan province, the implementation schemes related to the public policies such as Zhengzhou City Planning, High-tech Zone Construction in the First-tier City, and the Integrated Development of the Central Plains Urban Areas appeared in the process of implementing the new urbanization strategy.

关键词： Henan Province Urban Planning Public Policy

Research on the Innovation Development Strategy of Logistics Enterprises under the New Norma Condition of Economy

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International English Education Research 2018年第3期 11-13页

作者： hu xiaojing School of Management Shanghai University of Engineering Science Shanghai China

Under the new normal economy, the scale of logistics in China has continued to expand, and the logistics operating environment has also been significantly improved, but there are still some development difficulties. On the basis of analyzing the characteristics and predicaments of logistics development, this article points out the opportunities for development, and puts forward that China＇s logistics companies should adapt to changes in the economic environment, take the initiative to carry out technological innovation, model innovation and cultural innovation, and oromote the healthy and sustainable develonment oflogistics enterprises.

关键词： economic new normal logistics enterprise innovation strategy

Chronic effects of different fertilization regimes on nirS-type denitrifier communities across the black soil region of Northeast China

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Pedosphere 2020年第1期30卷 73-86页

作者： xiaojing hu Junjie LIU Dan WEI Ping Zhu Xi'an CUI Baoku ZHOU Xueli CHEN Jian JIN Xiaobing LIU Guanghua WANG Key Laboratory of Mollisols Agroecology Northeast Institute of Geography and AgroecologyChinese Academy of SciencesHarbin 150081(China) Institute of Soil and Fertilizer and Environment Resources Heilongjiang Academy of Agricultural SciencesHarbin 150086(China) Institute of Agricultural Resource and Environment Jilin Academy of Agricultural SciencesChangchun 130033(China) Heihe Branch of Heilongjiang Academy of Agricultural Sciences Heihe 164300(China) Institute of Plant Nutrition and Resources Beijing Academy of Agricultureand Forestry SciencesBeijing 100097(China)

Denitrification is one of the major processes causing nitrogen loss from arable *** study aimed to investigate the responses of nir S-type denitrifier communities to different chronic fertilization regimes across the black soil region of Northeast *** samples were collected from sites located in the north(NB),middle(MB),and south(SB)of the black soil region of Northeast China,each with four chronic fertilization regimes:no fertilizer(No F),chemical fertilizer(CF),manure(M),and chemical fertilizer plus manure(CFM).Methods of quantitative polymerase chain reaction(q PCR)and Illumina Mi Seq sequencing were applied to assess the abundance and composition of denitrifier communities by targeting the nir S *** results showed that the M and CFM regimes significantly increased the abundances of nir S-type denitrifiers compared with No F at the three *** majority of nir S sequences were grouped as unclassified denitrifiers,and the different fertilizers induced little variation in the relative abundance of known nir S-type denitrifier *** 90%of the sequences were shared among the four fertilization regimes at each location,but none of the abundant operational taxonomic units(OTUs)were shared among the three *** coordinate analysis(PCo A)revealed that the communities of nir S-type denitrifier were separated into three groups that corresponded with their *** similar fertilization regimes did not induce consistent changes in the nir S-type denitrifier communities,soil p H and NO-3-N content simultaneously and significantly influenced the structure of nir S-type denitrifier communities at the three *** results highlight that geographical separation rather than chronic fertilization was the dominant factor determining the nir S-type denitrifier community structures,and similar chronic fertilization regimes did not induce consistent shifts of nir S-type denitrifier communities in the black soils.

关键词： denitrification denitrifier diversity denitrifying gene geographical separation Illumina MiSeq sequencing manure Mollisols nirS gene quantitative polymerase chain reaction

Soil Bacterial Communities Under Different Long-Term Fertilization Regimes in Three Locations Across the Black Soil Region of Northeast China

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Pedosphere 2018年第5期28卷 751-763页

作者： hu xiaojing LIU Junjie WEI Dan Zhu Ping CUI Xi'an ZHOU Baoku CHEN Xueli JIN Jian LIU Xiaobing WANG Guanghua Key Laboratory of Mollisols Agroecology Northeast Institute of Geography and Agroecology Chinese Academy of Sciences Harbin 150081 (China) University of Chinese Academy of Sciences Beijing 100049 (China) Institute of Soil Fertilizer and Environment Resources Heilongjiang Academy of Agricultural Sciences Harbin 150086 (China) Institute of Agricultural Resource and Environment Jilin Academy of Agricultural Sciences Changchun 130033 (China) Heihe Branch of Heilongjiang Academy of Agricultural Sciences Heihe 164300 (China)

Although soil bacteria play critical roles in agro-ecosystems, the knowledge of their response to long-term fertilization across the black soil region of Northeast China is limited. In this study, we sequenced 16 S rRNA genes to assess the effects of four long-term fertilization regimes—non-fertilization(NoF), chemical fertilizer(CF), manure(M), and chemical fertilizer plus manure(CFM)—on soil properties and bacterial communities in three locations, the northern, middle, and southern parts, across the black soil region. Results showed that the influence of fertilization regimes on soil properties varied significantly among the three locations. Manure fertilization significantly increased microbial biomass carbon and relative abundance of copiotrophic bacteria. Principal component analysis(PCA)showed that the total bacterial communities were separated into three groups according to the sampling location despite long-term fertilization, and that soil pH was the most important factor in shifting bacterial communities. In addition, similar fertilization regimes resulted in different influences on bacterial community composition, and the most influential soil properties varied among the three locations. Our results highlighted that geographical separation was a more dominant factor affecting bacterial communities than fertilization, and that long-term similar fertilization regimes did not induce consistent changes in bacterial community composition in the black soil region.

关键词： chemical fertilizer geographical separation Illumina MiSeq sequencing Mollisols organic fertilizer soil properties 16SrRNA gene

MARC:Forty years of development and its future

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Journal of Library Science in China 2011年 187-198页

作者： hu xiaojing LI Kai East China Normal University Library The Capital Library

On the development of MARC,the contribution made by CLR and Henriette Avram was *** of its practicability,an initiative metadata scheme,a text file type,using the experience of other libraries,and cost analysis of cataloging workflow,MARC has lasted for 40 *** and various countries developed UNIMARC and other MARC formats respectively after 1970 ***1990s,there is a trend in turning to USMARC/MARC 21 and MARCs in *** will include more information,use external data,and integrate with *** may eventually return to an interchange format.

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