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A study of interaction between surface water and groundwater using environmental isotope in Huaisha River basin

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Science china Earth Sciences 2006年第12期49卷 1299-1310页

作者： SONG Xianfang1, LIU Xiangchao1, 2, XIA Jun1, YU Jingjie1 & TANG Changyuan1, 3 1. key laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographical Sciences and Natural Re- sources Research, Chinese Academy of Sciences, Beijing 100101, china 2. College of River and Ocean, Chongqing Jiaotong university, Chongqing 400074, china 3. Chiba university, Chiba 263-8522, Japan 1. key laboratory of Water Cycle and Related Land Surface Processes Institut of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China 2. College of River and Ocean Chongqing Jiaotong University Chongqing 400074 China 3. Chiba university Chiba 263-8522 Japan

The surface water and groundwater are important components of water cycle, and the interaction between surface water and groundwater is the important part in water cycle research. As the effective tracers in water cycle research, environmental isotope and hydrochemistry can reveal the interrelationships between surface water and groundwater effectively. The study area is the Huaisha River basin, which is located in Huairou district, Beijing. The field surveying and sampling for spring, river and well water were finished in 2002 and 2003. The hydrogen and oxygen isotopes and water quality were measured at the laboratory. The spatial characteristics in isotope and evolution of water quality along river lines at the different area were analyzed. The altitude effect of oxygen isotope in springs was revealed, and then using this equation, theory foundation for deducing recharge source of spring was estimated. By applying the mass balance method, the annual mean groundwater recharge rate at the catchment was estimated. Based on the groundwater recharge analysis, combining the hydrogeological condition analysis, and comparing the rainfall-runoff coefficients from the 1960s to 1990s in the Huaisha River basin and those in the Chaobai River basin, part of the runoff in the Huaisha River basin is recharged outside of this basin, in other words, this basin is an un-enclosed basin. On the basis of synthetically analyses, combining the compositions of hydrogen and oxygen isotopes and hydrochemistry, geomorphology, geology, and watershed systems characteristics, the relative contributions between surface water and groundwater flow at the different areas at the catchments were evaluated, and the interaction between surface water and groundwater was re- vealed lastly.

关键词： environmental isotope,hydrochemistry,surface water,groundwater,interaction.

Depositional environment in the southern Ulleung Basin,East Sea(Sea of Japan),during the last 48000 years

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Acta Oceanologica Sinica 2010年第5期29卷 52-64页

作者： LIU Yanguang SHA Longbin SHI Xuefa SUK Bong-Chool LI Chaoxin WANG Kunshan LI Xiaoyan key laboratory of Marine Sedimentology and environmental geology First Institute of Oceanography State Oceanic Administration Qingdao 266061 China Department of Geography East China Normal University Shanghai 200062 China South Sea Research Institute Korea Ocean Research and Development Institute （KORDI） Geoje 656-830 Korea

The present study is based on the sedimentological data from a piston core KCES1 off the southern Ulleung Basin margin,the East Sea（Sea of Japan）.The data include sediment color（L^＊）,X-ray radiographs,grain size distribution and AMS^14C *** kinds of sediments（homogeneous,laminated,crudely laminated and hybrid sediments） are identified according to the characters of the sedimentary structures that were considered to reflect changes in bottom-water *** of dark laminated/crudely laminated sediments and light homogeneous sediments represent millennial-scale variations that are possibly associated with the high-resolution changes in the East Asian monsoon（EAM）.The relative contributions of the East china Sea Coastal Water（ECSCW） and the Tsushima Warm Current（TWC） were likely the main reasons for the repetition of the anoxic and oxic depositional conditions in the East Sea since the last 48 ka *** the interstadial,the strengthen summer EAM was attributed to the expansion of the ECSCW because of more humid climate in central Asia,and then more strongly low-salinity,nutrient-enriched water was introduced into the East *** ventilation of deep water was restricted and therefore the dark laminated layer deposited under the anoxic bottom water *** the lowest stand of sea level in the last glacial maximum（LGM）,the isolated East Sea dominated by stratified water masses and the euxinic depositional environment *** homogenous sediments have been predominating since 17.5 ka BP indicating that the TWC has intruded into the East Sea gradually with the stepwise rise of sea level and the bottom water oxygen level was *** the late Younger Dryas（YD） period,the last dark laminated layer deposited because the ventilation of bottom water was restricted by stronger summer *** TWC strengthened and the bottom water became oxic again from 10.5 ka BP.

关键词： East Sea depositional environment East Asian monsoon Tsushima Warm Current

Nd isotope as the tracer of seawater evolution of early Miocene in the eastern Pacific Ocean

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Chinese Science Bulletin 2003年第B06期48卷 106-110页

作者： LIU Jihua~(1,2,3), CHEN Lirong~1, WANG Yingxi~4 & HAN Jianxiu~5 1. Institute of Oceanology, Chinese Acadcmy of ences, Qingdao 266071. china 2. key Lab of Marine Sedimentology and environmental geology, First Institute of Oceanograpgy, State Oceanic Administration, Qingdao 266061. china 3. Graduate School, Chinese Academy of Sciences, Beijing 100039. china 4. Modern Analysis Center, Nanjing university. Nanjing 210093. china 5. Guangzhou Marine Investigation Bureau, Guangzhou 510760. china 1. Institute of Oceanology Chinese Academy of Sciences 266071 Qingdao China 2. key Lab of Marine Sedimentology and environmental geology First Institute of Oceanograpgy State Oceanic Administration 266061 Qingdao China 3. Graduate School Chinese Academy of Sciences 100039 Beijing China 4. Modern Analysis Center Nanjing University 210093 Nanjing China 5. Guangzhou Marine Investigation Bureau 510760 Guangzhou China

Fifty-six samples of nannofossil ooze were collected from Core PC5794 in the northern equatorial Pacific at 5 cm intervals. With the methods of mass spectrometer (VG354) and ICP, the Nd isotopic compositions (εNd(t)), Mn contents and Mg/Sr ratios of carbonate phase have been analyzed. CaCO3 contents of bulk sediments were obtained by dissolution of 0.5 mol/L HCl. Based on these data, the high-resolution εNd(t) profile of seawater in early Miocene with core depth(or time) have been established. The values of εNd(t) range from -6.2 to -2.97 and 4 fluctuation cycles existed during 24.06-22.02 Ma. 4 low εNd(t) values (about -6.4) correspond to high CaCO3 contents, which implicates that there were 4 cold epochs or 4 times of Antarctic Bottom Water activity. They occurred at the time of 24.06 Ma, 23.85 Ma,22.88 Ma and 22.26 Ma, respectively. High εNd(t) values correspond to the high Mn contents and high values of Mg/Sr ratio, which indicates the existence of 4 intense hydrothermal activity periods during 24.06-22 Ma, the durations of them are 4.05-23.98 Ma, 23.69-23.15 Ma, 22.74-22.37 Ma and 22.06-22.02 Ma, respectively.

关键词：同位素钕示踪原子海水演化中新世太平洋微化石分光计持续期海水样品

Study on ground temperature change and characteristic response of engineering geology of permafrost along Qinghai-Tibet Railway

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Science china(Technological Sciences) 2003年第z1期46卷 78-90页

作者： PAN Weidong, WANG Quancai, YU Shaoshui & ZHANG Xiaoyan Department of Mechanics, School of Physical Science and Technology, Lanzhou university, Lanzhou 730000, china Institute of Mountain Hazards and Environment, Chinese Academy of Sciences and ministry of Water Resources, Chengdu 610041, china State key laboratory of Frozen Soil Engineering, Cold and Arid Regions Environment and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, china Sichuan Provincial Communications Department, Chengdu 610041, china Lanzhou Univ Dept Mech Sch Phys Sci & Technol Lanzhou 730000 Peoples R China Chinese Acad Sci Inst Mt Hazards & Environm Chengdu 610041 Peoples R China Minist Water Resources Chengdu 610041 Peoples R China Chinese Acad Sci State Key Lab Frozen Soil Engn Cold & Arid Reg Environm & Engn Res Inst Lanzhou 730000 Peoples R China Sichuan Prov Commun Dept Chengdu 610041 Peoples R China

Along with the global warming in the recent scores of years, comparatively big changes have taken place in the weather and other environmental conditions of the permafrost area in the Qinghai-Tibet Plateau, and very big changes have also occurred in the engineering geological conditions of the permafrost area. Based on a large volume of field survey data, this paper discusses the regularities of horizontal and vertical distribution of permafrost, with its focus of analysis on the temperature change characteristics of the soil in different frozen-soil zones, as well as presents simulation analysis and research for the engineering geologic characteristic response changes that would occur in the future when the temperature of the frozen soil in different zones rises by 1 and 2.6℃ respectively, which will have a tremendous impact on the stability of constructional work.

关键词： Qinghai-Tibet Railway, permafrost, ground temperature, engineering geological characteristic.

The vegetation and climate change during Neocene and Early Quaternary in Jiuxi Basin, china

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Science china Earth Sciences 2005年第5期 676-688页

作者： MA Yuzhen 1 , FANG Xiaomin 1,2 , LI Jijun 1 , WU Fuli 1 & ZHANG Jun 1 1. key laboratory of Western china’s environmental Systems and College of Resources and Environment, Lanzhou university, Lanzhou 730000, china 2. State key laboratory of Loess and Quaternary geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, china

Sporopollen record in the Laojunmiao Section at Yumen in the Hexi Corridor foreland depression at the northern margin of the Tibetan Plateau revealed that during the period of 13.0―11.15 Ma the ecological environment of the Jiuxi Basin is characterized by steppe vegetation and a semi-moist climate. During 11.16―8.60 Ma prevailed forests of cypress and a still warmer, moister climate; steppe vegetation and dry climate began probably at about 8.6 Ma. Although aridification had been relaxed time and again during 8.40―6.93 Ma (forest-steppe, warm-semi-moist), 6.64―5.67 Ma (open-forest and steppe, warmer-semi-moist) and 5.42―4.96 Ma (steppe, semi-arid), the climate in the region became drier and drier in response to the fre- quent occurrence of aridity during 6.93―6.64 Ma (steppe, semi-arid), 5.67―5.42 Ma (de- sert-steppe, arid), 3.66―3.30 Ma (desert-steppe, arid) and 2.56―2.21 Ma (desert, arid). Perhaps the important findings of our study are the notable expansion of drought-enduring plants during 3.66―3.30 Ma and about 2.56 Ma and the replacement of vegetation by vast arid desert.

关键词： Tibetan Plateau Hexi Corridor sporopollen record ecological environment vegetation evolution aridific-ation.

DRAV model and its application in assessing groundwater vulnerability in arid area:a case study of pore phreatic water in Tarim Basin,Xinjiang,Northwest china

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DRAV model and its application in assessing groundwater vuln...

Research Advances on the Loess-Bedrock Landslide in china

中国科学院地质与地球物理研究所第十届(2010年度)学术年会

作者： Jinlong Zhou·Guomin Li·Feng Liu·Yiping Wang·Xiaojing Guo Institute of geology and Geophysics, Chinese Academy of Sciences,100029 Beijing,china College of Water Conservancy and Civil Engineering, Xinjiang Agricultural university,830052 Urumqi,china School of environmental Science,china university of geosciences,430074 wuhan,china

According to the characteristics of groundwater in arid area,this paper proposes DRAV model for groundwater vulnerability assessment,where D is groundwater depth,R is the net recharge of aquifer,A is the aquifer characteristics,and V is the lithology of vadose *** a case study,the paper assesses the vulnerability of pore phreatic water in Tarim Basin of Xinjiang,china by using the DRAV *** results indicate that the areas of phreatic water with vulnerability index ranges of 2-4,4-6,6-8 and>8 accounting for 10.1,80.4,9.2 and 0.2%of the total plain area of the Tarim Basin respectively, and the areas with the latter two vulnerability ranges (6-8 and>8)are mainly located in the irrigation districts with thin soil layer(20-30 cm thick surface soil of vadose zone,mainly with underlying sandy gravel)and with silty and fine sand *** vadose zone generally lacks sandy loam and clayey soil and has larger recharge by infiltration of irrigation water.

关键词： Groundwater Vulnerability DRAV model Tarim Basin

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Research Advances on the Loess-Bedrock Landslide in China

environmental evolution recorded by lipid biomarkers from the Tawan loess-paleosol sequences on the west Chinese Loess Plateau during the late Pleistocene

2012 Asia Pacific Conference on environmental Science and Technology(APEST 2012)

作者： Chengyi Fan1 a Shouyun Liang1 b and Xiangxian Ma2 c 1 key laboratory of Mechanics on Disaster and Environment in Western china the ministry of education of china and Department of Geological Engineering College of Civil Engineering and Mechanics Lanzhou university Lanzhou 730000 P.R.china 2.key laboratory of Petroleum Resources Research Institute of geology and Geophysics Chinese Academy of Sciences Lanzhou 730000 P.R.china

Loess landslide is one of the serious geological disasters in and around the loess plateau in northwest of *** the major type of loess landslide in this area,loess-bedrock landslide widely distributes,frequently occurs,and causes serious casualties and property *** the formation mechanism and protection countermeasures arousing increasingly,the scientists have paid close attention and got a series of research *** is very important of systematic summary and thorough analysis of the loess-bedrock landslide for reducing disasters caused by loess *** acquired achievements of the loess-bedrock landslide have been summarized on classification,formation mechanism,influencing factors and hazard range,and some main fields are put forward for further researching:（1） to explore the control action and boundary effect of paleo-weathering crust upon the top of bedrock for the loess-bedrock landslide;（2） to research the influence of the orientation and the top fluctuant configuration of bedrock and the slope structure on loess landslide;（3） to study the relationship between the landslide formation and the slope profile structure,the physical,hydrological and mechanical properties of the rock-soil mass;（4） to research the critical value of locked segment in the loess-bedrock cutting layer landslide;（5） to analyze the main influencing factors and forecast the hazard range of different types of the loess-bedrock landslide.

关键词： Loess-bedrock landslide Landslide classification Formation mechanism Hazard range Research advances.

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Environmental evolution recorded by lipid biomarkers from th...

Concentration Characteristics and Sources of Chemical Elements in Atmospheric Fine Particles (PM_(2.5)) in Autumn in Xi'an City

中国科学院地质与地球物理研究所第11届（2011年度）学术年会

作者： Fangming Zeng·Shuyuan Xiang·Kexin Zhang·Yulin Lu Institute of geology and Geophysics,Graduate university, Chinese Academy of Sciences,Box 9825,Beijing 100029,china Faculty of Earth Sciences,State key Lab of Geological Processes and Mineral Resources,china university of geosciences,wuhan 430074,china Development and Research Center,china Geological Survey, Beijing 100037,china

This study provides a reconstruction of the environmental evolution since 128 ka recorded by the lipid biomarkers of the C-C n-alkanes,the C-C n-alkan- 2-ones and the C-C n-alkanols isolated from the Tawan loess section,Northwest *** in paleoenvironment are reconstmcted from the values of the carbon preference index(CPI),the average chain length(ACL), the L/H(ratio of lower-molecular-weight to higher-molecular -weight homologues),the n-alkane C/C ratios,and the n-alkan-2-one C/C *** parameters indicate the dominance of grasses over the west Chinese Loess Plateau(CLP) during the late Pleistocene. Lower values of the CPI and the ACL values,respectively, indicate stronger microbial reworking of organic matter and changes in plant species,which are both indicative of a warmer-wetter ***,the fluctuations of environment recorded in the Tawan section exhibit ten phases that show obvious cycles between warm periods and cold *** study reveals that changes in the biomarker proxies agree well with changes in the magnetic susceptibility and grain size,and it indicates a huge potential for paleoenvironmental reconstructions by using the n-alkan-2-one and n-alkanol proxies.

关键词： Loess Lipid biomarker Linxia Late Pleistocene Earth environment

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Meteorological and environmental Research 2011年第4期2卷 5-8页

作者： GAN Xiao-feng1,2, CAO Jun-ji2,3, WANG Qi-yuan4, SHEN Zhen-xing4, XU Hong-mei2 1. Department of environmental Science and Technology, Xi’an Jiaotong university, Xi’an 710049, china 2. State key laboratory of Loess and Quaternary geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, china 3. Institute of Global environmental Change, Xi’an Jiaotong university, Xi’an 710049, china 4. Department of environmental Engineering, Xi’an Jiaotong university, Xi’an 710049, china

[Objective] The aim was to study the concentration characteristics and sources of chemical elements in atmospheric fine particles (PM2.5) in autumn in Xi’an City. [Method] By means of mini-volume sampler, PM2.5 samples in atmosphere in Xi’an were collected in October 2009, and the concentration characteristics and sources of elements in PM2.5 were analyzed. [Result] The average mass concentration of PM2.5 in atmosphere in autumn in Xi’an City was 168.44 μg/m3 which was higher than that of Beijing and Pearl River Delta area, and the minimum and maximum value were 53.29 and 358.16 μg/m3, respectively. The mass concentration of S, Zn, K, Cl, Ca and Fe in PM2.5 was above 1.0 μg/m3, being at high pollution level. In addition, K had obvious correlation with organic carbon (OC) and element carbon (EC), with the correlation coefficients of 0.76 and 0.75 (P2.5 in autumn in Xi’an. [Conclusion] The study could provide theoretical foundation for the control of urban environmental pollution.

关键词： Atmospheric fine particles Chemical element Enrichment factor Factor analysis china