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Journal of Earth Science 2022年第6期33卷 1601-1613页

作者： Xiuchang Zhu Yongbo Wang Xinyue Dang Huan Yang shucheng xie State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesWuhan430078China School of Earth Sciences China University of GeosciencesWuhan430074China School of Finance and Business Shanghai Normal UniversityShanghai200234China Hubei Key Laboratory of Critical Zone Evolution School of Geography and Information EngineeringChina University of GeosciencesWuhan430078China

Microbial glycerol dialkyl glycerol tetraethers(GDGTs)in lacustrine sediments are widely used to reconstruct terrestrial ***,lipids of diverse origin in lakes make it difficult to decipher environmental information,appealing for the necessity to evaluate the impact of terrigenous input on the distribution of GDGTs through long-term *** this study,we conducted two-year monitoring of GDGTs along the river,estuary,near shore,to the center of Lake Liangzi in central *** comparing the spatiotemporal changes of GDGT distribution in suspended particulate matter(SPM)and surface sediments,we found that the archaeal isoprenoid GDGTs(isoGDGTs)were mainly produced in situ in the river-lake systems,and not affected by the soil *** contrast,the bacterial branched GDGTs(brGDGTs)were affected,to some extent,by soil input,depending on the distance to the *** soil input of brGDGTs was enhanced during an episode of abnormal rainfall(flood).Moreover,the large variation of isoGDGTs indicates the in situ production under the anoxic condition in lake *** paired increase in the GDGT-0/Cren ratio and GDGT concentration might be diagnostic of flooding events in ancient times.

关键词： GDGTs Lake Liangzi terrigenous input monitoring environmental geology

A comparative study of n-alkane biomarker and pollen records: an example from southern China

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Chinese Science Bulletin 2009年第6期54卷 1065-1072页

作者： ZHENG YanHong ZHOU WeiJian xie shucheng YU XueFeng State Key Laboratory of Continental Dynamics Department of Geology Northwest University Xi'an 710069 China State Key Laboratory of Loess and Quaternary Geology Institute of Earth Environment Chinese Academy of Sciences Xi'an 710075 China Key Laboratory of Biogeology and Environment Geology of Ministry of Education China University of Geosciences Wuhan 430074 China

We report the results of a comparative study of n-alkane biomarkers and pollens in lacustrine and peat deposits at Dingnan, Jiangxi Province in southern China, and discuss the likely causes for the dis-crepancy in the interpretations of the n-alkane biomarker and pollen records in terms of climate and vegetation change. The results show that past changes in climate and vegetation revealed by the n-alkane record are not always consistent with the pollen assemblage record in the whole section. Biomarkers do not permit direct identification of the plant family and/or genus and mainly record compositions of local plant remains, while pollens mainly reflect the regional vegetation change. Bio-markers and pollen records complement each other, providing a better picture of local and regional environments. Furthermore, biomarkers are more sensitive than pollen to climatic and vegetational change. Several climatic events are clearly identified by the n-alkane biomarker proxies, such as C31/(C27+C29+C 31) ratio and can be correlated to the North Atlantic Heinrich event, B/A, YD and two dry-cool events during the early Holocene such as the periods of 9850 to 9585 cal a B.P. and 8590 to 7920 cal a B.P. These events are consistent with those found in the surrounding regions, suggesting that the regional climate was coupled with global-scale abrupt climatic events. Our results suggest that biomarker and pollen data can record the more detailed climate and vegetation information, thus im-proving the resolution and precision of vegetation and climate reconstruction.

关键词：烷烃生物标志物花粉记录华南地区植被变化气候条件个例气候事件孢粉组合

Microbial roles equivalent to geological agents of high temperature and pressure in deep Earth

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Science China Earth Sciences 2016年第11期59卷 2098-2104页

作者： xie shucheng LIU Deng QIU Xuan HUANG XianYu Thomas J.ALGEO State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences Laboratory of Critical Zone Evolution School of Earth Sciences China University of Geosciences State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Department of Geology University of Cincinnati

Microbes not only show sensitive responses to environmental changes but also play important roles in geochemical and geophysical systems. It is well known that microbes have caused major changes in surface environments and biogeochemical cycles through Earth history. Microbial processes can also induce the synthesis of certain minerals under Earth-surface conditions that previously were believed to form only under high temperatures and pressures in the deep Earth. For example, microbes can promote the conversion of smectite to illite, synthesis of authigenic plagioclase, precipitation of dolomite, and biotransformation of geolipids. These effects of microbes are due to their large surface/volume ratios, enzyme production, and abundant functional groups. Microbial catalyzation of chemical reactions proceeds through reaction-specific enzymes, a decrease in Gibbs' s free energy, and/or break through the dynamics reaction thresholds via their metabolisms and physiology. Microbes can lower the surface free energy of mineral nuclei via biophysical adsorption due to their large surface/volume ratios and abundant functional groups. The mineral precipitation and transformation processes induced by microbes are functionally equivalent to geological processes operating at high temperatures and pressures in the deep Earth, suggesting that microbial processes can serve as analogs to deep abiotic processes that are difficult to observe.

关键词： Geobiology Microbial functional groups Illitization Plagioclase Dolomite Geolipids

Discussion on geobiology, biogeology and geobiofacies

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Science China Earth Sciences 2008年第11期51卷 1516-1524页

作者： YIN HongFu xie shucheng QING JianZhong YAN JiaXin LUO GenMing Key Laboratory of Biogeology and Environmental Geology of Ministry of Education China University of GeosciencesWuhan 430074China State Key Laboratory of Geological Process and Mineral Resources China University of GeosciencesWuhan 430074China Wuxi Institute of Petroleum Geology SINOPECWuxi 214151China

Here we first discuss the definition of and the difference between geobiology and biogeology following a brief introduction of recent geobiology research in China. Geobiology is defined as an interdisciplinary study of life sciences and earth sciences, and biogeology as an interdisciplinary study of biology and geology. Scope of the term geobiology covers that of the term biogeology. Branch interdisciplines of both are listed. We then propose the term geobiofacies, defined as the facies of a geologic body embodying the whole process of interaction between organisms and environments. Differences among geobiofacies, biofacies, and organic facies are discussed. Main parameters defining a geobiofacies include habitat type, biotic composition and productivity, paleo-oxygenation regimes, and early diagenesis phases. Each of them is discussed in detail, and a semi-quantitative assessment of the biogeofacies of source rocks is proposed based on these parameters. A two-fold terminology for geobiofacies is recommended, namely, the biological and environmental aspects of biota and the redox conditions during life-burial-diagenesis process

关键词： geobiology biogeology geobiofacies

Tectonomicrobiology:A new paradigm for geobiological research

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Science China Earth Sciences 2018年第4期61卷 494-498页

作者： Chuanlun ZHANG Jian LIN Sanzhong LI Hailiang DONG Fengping WANG shucheng xie Department of Ocean Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Woods Hole Oceanographic Institution Woods HoleMassachusetts 02543USA Institute of Marine Geodynamics Ocean University of ChinaQingdao 266100China State Key Laboratory of Biogeology and Environmental Geology China University ofGeosciencesBeijing 430074China Department of Geology and Environmental Earth Science Miami UniversityOxfordOhio 45056USA State Key Laboratory of Microbial Metabolism and State Key Laboratory of Ocean Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Geomicrobiology is a sub-discipline of geobiology and emphasizes the interaction between microorganisms and their environment on Earth. There is a need to explicitly emphasize the biogeochemical processes performed by microorganisms associated with Earth's tectonic activities, especially under the framework of the modern theory of plate tectonics. Tectonomicrobiology aims to create a better synergy between microbial and active tectonic processes. This explicit synergy should also foster better communications between solid Earth scientists and life scientists in terms of holistic Earth system dynamics at both tectonic and micro-scales.

关键词： Geobiology Geomicrobiology Tectonomicrobiology Tectonic activities Microbial evolution

Optimization of acid digestion conditions on the extraction of fatty acids from stalagmites

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Frontiers of Earth Science 2012年第1期6卷 109-114页

作者： Canfa WANG Hongbin ZHANG Xianyu HUANG Junhua HUANG shucheng xie State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesWuhan 430074China State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430074China

Lipids in stalagmites have been shown the potential for the paleoclimate reconstruction. However, the low lipid content leads to the difficulty in gaining high resolution lipid record in stalagmites because large mass of samples are required. Previous studies have validated that the acid digestion can improve the yield of lipids, especially fatty acids （FAs） and 3-hydroxy fatty acids （3- OH-FAs）. In order to obtain more content of FAs and 3- OH-FAs with limited stalagmite sample weight, we investigate here how the acid digestion conditions （HC1 concentration, heating temperature and time duration） could affect the yields of FAs and 3-OH-FAs. Under different concentration of HC1, from 2.0 to 6.0 mol/L, the FAs keep the same step in content variation with 3-OH- FAs, and the highest yields of both two appeared under the 3 mol/L HCl. The content of 3-OH-FAs increases posi- tively with the heating temperature from 80℃ to 150℃, while FAs showed the highest content at 130℃. Both of FAs and 3-OH-FAs firstly increased to a high content and then decreased as the heating time duration varies from 1.0 to 4.0 h, with the highest yields of both two being at 3.0 h. Consequently, we suggest the optimized acid digestion condition is under 3 mol/L HC1, heating at 130℃ for 3 h and 5 g of each stalagmite sample are sufficient for the lipid analysis.

关键词： stalagmite lipids acid digestion optimization

Bio-Organic Geochemistry research in China: Advances,opportunities and challenges

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Science China Earth Sciences 2018年第12期61卷 1775-1780页

作者： Chuanlun ZHANG Ping'an PENG Meixun ZHAO shucheng xie Jianfang CHEN Weiguo LIU Shenzhen Key Laboratory of Marine Archaea Geo-Omics Department of Ocean Science and EngineeringSouthern University of Science and Technology Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and Technology State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Key Laboratory of Marine Chemistry Theory and Technology (Ocean University of China) Ministry of Education/Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and Technology State Key Laboratory of Biogeology and Environmental Geology School of Earth Sciences China University of Geosciences Key Laboratory of Marine Ecosystem and Biogeochemistry State Oceanic Administration State Key Laboratory of Loess and Quaternary Geology Institute of Earth EnvironmentChinese Academy of Sciences

The discipline of "Bio-Organic Geochemistry" is a cross research field between biogeochemistry and traditional organic geochemistry, which focuses on geochemical processes related to the biosynthesis of organic molecules(particularly lipids) by(micro) organisms, organic matter production by primary producers, degradation of organic matter by microbial processes recorded by retainable lipid biomarkers, and organic proxies for studies of paleo-climate, paleo-environments, paleoecology and Earth evolution. This field aims to go beyond the traditional petroleum-oriented Organic Geochemistry by integrating with biogeochemical concepts concerned mostly with biomolecules from cellular material such as DNA and lipids. A formal Chinese organization in Bio-Organic Geochemistry was established in 2012 when the first conference was held in Guangzhou. This organization has witnessed rapid growth over the past six years with focused research addressing organic proxies in paleoclimate and paleoenvironmental applications, with particular rapid development in glycerol dialkyl glycerol tetraethers-derived proxies. Most progresses in China so far are made following or paralleling the international trend in biogeochemical studies. Things have begun to change with China's ambitious initiatives in several bio-geo programs such as the Ocean Deep Drilling Program of China, the Microbial Hydrosphere Program, the Deep Carbon Observatory, and the Microbiome Program. Looking forward in the 21 st Century, the growing Chinese research community in Bio-Organic Geochemistry faces grand opportunities and challenges as Chinese scientists propel themselves toward global research frontiers.

关键词： Bio-Organic Geochemistry Biogeochemistry Geomicrobiology Paleoclimate proxies Carbon cycles Microbial genomics

Holocene vegetation cover in Qin’an area of western Chinese Loess Plateau revealed by n-alkane

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Chinese Science Bulletin 2007年第12期52卷 1692-1698页

作者： ZHONG YanXia CHEN FaHu AN ChengBang xie shucheng HUANG XianYu Key Laboratory of Western China's Environmental Systems (MOE) Lanzhou University Lanzhou 730000 China Laboratory of Earth Surface Systems Chinese University of Geosciences Wuhan 430074 China Faculty of Resource and Environment Ningxia University Yinchuan 750021 China

Previous studies have found that wetlands prevailed in western Chinese Loess Plateau and pine pollen could reach up to 80% in Qin’an area of the plateau during middle Holocene. It was then deduced that forest vegetation covered Qin’an area in a warm and wet climate during middle Holocene. The proxies of molecule biomarkers from two Holocene sections, a swamp-alluvial loess section and a typical loess-paleosol section are used to reconstruct regional vegetation history. It is found that the heavy-molecular-weight (HMW) homologues of the n-alkanes in all samples exhibit a pronounced odd-over-even predominance, maximizing at C31 and the abundance of the nC27-alkanes is the lowest in nC27, nC29, nC31, i.e. C27

关键词：分子生物标志烷烃全新世植被覆盖中国黄土高原

Preliminary Mo isotope data of Phanerozoic clastic sediments from the northern margin of the Yangtze block and its implication for paleoenvironmental conditions

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Chinese Science Bulletin 2009年第5期54卷 822-829页

作者： ZHOU Lian GAO Shan CHRIS Hawkesworth COREY Archer xie shucheng State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Wuhan 430074 China Department of Earth Sciences University of Bristol Bristol BS8 1R J U.K.

Mo isotopes along with Nd isotopes and other geochemical characteristics of the Phanerozoic clastic sediments from the northern margin of the Yangtze block were analyzed by MC-ICP-MS and some other techniques, spanning the period from Cambrian to Jurassic. The δ 98Mo values and εNd(t ) in these sedimets were observed to exhibit a large range of variation (?0.65‰―+1.87‰, ?1.46―?10.90, respec-tively). Specifically, the sample from Late Permian Maokou Formation has relatively positive values in both δ 98Mo and εNd(t ) (+0.97‰, ?1.46, respectively). These elevated values are proposed to relate to the input of a large quantity of H2S and HS- into the contemporaneous seawater by the volcanic eruption of the Emeishan mantle plume. Introduction of these sulfide gases would cause MoO42? to be transferred into MoS24?, favoring the preferential deposition of the heavy Mo isotope as MoS24? and thus leaving a positive Mo isotope value. The sample from Late Permian Changxing Formation has a significantly elevated δ 98Mo value of +1.87‰, in association with the relatively negative εNd(t ) (?10.90) and remain the relatively higher content of both TOC and total sulfur (TS) (1.52%, 2.02%, respectively). This infers the presence of the enhanced primary productivity and high organic burial during the Changxing pe-riod. The production of a huge quantity of HS? and H2S by the sulfate-reducing reaction led to the ex-istence of the elevated seawater δ 98Mo values during the Changxing period. The preliminary Phanero-zoic data reported here allow us to propose that the Mo isotope signature preserved in reductive sediments is related to the regional tectonic settings and the associated environmental conditions, and thus the measurement of δ 98Mo promotes our understanding on the evolution of the paleoenviron-mental event in the Earth history.

关键词：钼同位素古环境显生宙长江

Monitoring and prediction of pathogenic microorganisms in the atmosphere

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Fundamental Research 2024年第3期4卷 415-416页

作者： shucheng xie Yongguan Zhu State Key Laboratoryof Biogelogy and Environmental Geology Hubei Key Laboratoryof Critical Zone EvolutionSchoolof Earth SciencesChina Universityof GeosciencesWuhan 430074China Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China

Historically,many large epidemics have been closely related to the high transmissibility and susceptibility of viruses and other microorganisms in the atmosphere or other vectors[1].Climate change is ushering the world into a new era of infectious disease crises[2].Extreme weather disasters and major epidemics are becoming more severe,resulting in an increased risk of a deteriorating ecological environment and cross-species transmission of *** example,COVID-19 is the most serious global public health emergency in the current century,posing a significant threat to human health and public *** has underscored the importance of establishing a prevention and control system with the monitoring and prediction of pathogenic microorganisms spread at its ***,the infectivity,latency,and variability of pathogenic microorganisms in the atmospheric environment are highly uncertain,necessitating more comprehensive research into understanding and monitoring their transmission mechanisms,as well as predicting their spread.

关键词： prediction atmosphere weather