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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 {2. 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

Improved ecological development model for lower Yellow River floodplain,china

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Water Science and Engineering 2020年第4期13卷 275-285页

作者： Jin-liang Zhang Yi-zi Shang Ji-xiang Liu Jian Fu Meng Cui Yellow River Engineering Consulting Co. Ltd.Zhengzhou 450003China State Key laboratory of Simulation and Regulation of Water Cycle in River Basins China Institute of Water Resources and Hydropower ResearchBeijing 100038China

In this study,a model for the development of the wide floodplain in the lower Yellow River Basin,in china was *** model includes flood control schemes using grading criteria,enables sediment deposition in partitioned zones,and allows free exchange between channel runoff and *** wide floodplain located between the main channel and levees is divided into three typical regions:the tender,low,and high *** ecological models should be applied when these floodplains are *** paper describes the associated research ideas and methodology,and clarifies several key issues,including sediment prediction and regulation,land planning,land use,and a multi-dimensional framework of safeguard measures for industries on the lower Yellow River floodplain.A refined ecological development model is proposed for the lower Yellow River floodplain,and future work on ecological and sustainable development of the lower floodplain is *** establish a comprehensive system integrating runoff and sediment resource regulation in the Yellow River Basin,future work should focus on runoff and sediment exchange mechanisms in the wandering lower ***,it is necessary to improve theories on floodplain planning and ecological construction,and these theories should be integrated with the research findings on land development across the lower Yellow River floodplain.©2.2. Hohai *** and hosting by Elsevier *** is an open access article under the CC BY-NC-ND license(http://***/licenses/by-nc-nd/4.0/).

关键词： Ecological development Lower Yellow River Floodplain sediment Eco-friendly construction model

Coupling interaction between biodiversity and aquatic habitat area in Western Route Project vicinity

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Water Science and Engineering 2010年第3期3卷 354-360页

作者： Shi-min TIAN Zhao-yin WANG xiang-jun LIU Shi-kui liang Key laboratory of Yellow River sediment MWR Institute of Hydraulic Research YRCC Zhengzhou 450003 P. R. China State Key laboratory of Hydroscience and Engineering Tsinghua University Beijing 100084 P. R. China Henan Water and Power Consulting Engineering Co. Ltd. Zhengzhou 450008 P. R. China Department of ltyctraulic Engineering North China University of Water Resources and Electric Power Zhengzhou 450008 P. R. China

The Western Route of the South-to-North Water Transfer Project will divert water from the upper Yangtze River and its tributaries, the Dadu River and Yalong River, to the upper Yellow River. The project may ease the water shortage in the Yellow River Basin. However, it may also have some effects on the ecosystem in the upper Yangtze River Basin. Benthic invertebrates play an important role in the river ecosystem, particularly in the circulation of materials and nutrition. Benthic invertebrates are widely used to quickly assess river ecosystems because of their rapid response to changes in the water environment. The diversity of benthic invertebrates is closely associated with the aquatic habitat area. This study examined this interaction by sampling the benthic invertebrates in an expanding area. The conclusions are that the diversity of benthic invertebrates begins to decrease when the aquatic habitat area is reduced to 45% of the original area, and decreases dramatically when the aquatic habitat area is reduced to 10% of the original area. The aquatic habitat area should be kept at more than 45% of the original area in order to maintain the significant diversity of benthic invertebrates.

关键词： Western Route Project South-to-North Water Transfer Project," river ecosystem benthic invertebrates biodiversity aquatic habitat area

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不同粒径泥沙解吸重金属污染物静态试验研究

水动力学研究与进展（A辑） 1995年第2期10卷 204-213页

作者：黄岁梁万兆惠王兰香清华大学水利系北京100084 水利水电科学研究院灾环中心北京100044 中国环境科学研究院水环境所北京100012

从吸附反应动力学方程和质量守恒方程出发,导得静态解吸试验中泥沙剩余吸附量和水相重金属浓度随时间变化的计算公式,并导得泥沙剩余平衡吸附量和水相平衡浓度随泥沙吸附-解吸的特性、泥沙初始重金属吸附量(含量)和泥沙浓度变化的计算... 详细信息

从吸附反应动力学方程和质量守恒方程出发,导得静态解吸试验中泥沙剩余吸附量和水相重金属浓度随时间变化的计算公式,并导得泥沙剩余平衡吸附量和水相平衡浓度随泥沙吸附-解吸的特性、泥沙初始重金属吸附量(含量)和泥沙浓度变化的计算公式。在此基础上,结合试验进一步研究了不同粒径泥沙解吸重金属污染物的能力。

关键词：重金属解吸泥沙污染物水体污染

Hydroclimatic variations in the Tianshan Mountains based on grain size and geochemistry of core sediments since~1490 CE

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Journal of Mountain Science 2023年第4期20卷 1010-1025页

作者： LAN Bo XU Wen-feng YANG Yun-peng CHEN xiang-le LIU Zheng-xue ZHANG Dong-liang Key laboratory of Water environment Evolution and Pollution Control in Three Gorges Reservoir Chongqing Three Gorges UniversityChongqing404100China College of Geography and environmental Science Henan UniversityKaifeng475004China Xinjiang institute of Ecology and Geography Chinese Academy of SciencesUrumqi830011China

Numerous studies have focused on modern hydroclimate and the modulated mechanisms in the Tianshan Mountains(TMs),arid central ***,the detailed information of hydroclimatic processes beyond the instrumental period is still *** paper reconstructed a hydrology history from core sediments of the Dalongchi lake in the Tianshan *** comparability between endmembers(EMs)of grain size and ICP-AES based geochemical elements in the lake sediments highlighted their availability for hydrological *** forces(EM1,EM4,Ti/Al and Li/Al),chemical weathering intensity[(Mg+Ca+K)/Al],salinity proxy(Mg/Ca)and redoxsensitive proxy(Fe/Mn)highly correlated with the first principal component(Plake ***3-indicated eolian activity intensity was caused by the behaviors of Siberian High because the latter intensified surface wind and the dust *** hydrothermal patterns were characterized by warm/dry and cold/wet alternations in a long run although warm/wet pattern was identified from a short-term view.

关键词： Dalongchi lake Paleohydrology End-members Central Tianshan Mountains Geochemistry Trace metal

Phosphorus in Interstitial Water Induced by Redox Potential in sediment of Dianchi lake,{2.

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Pedosphere 2007年第6期17卷 739-746页

作者： LI Qing-Man ZHANG Wen WANG Xing-xiang ZHOU Yi-Yong YANG Hao JI Guo-liang institute of hydrobiology Chinese Academy of Sciences Wuhan 430072 （China） institute of Soil Science Chinese Academy of Sciences Nanjing 210008 （China） Graduate School of the chinese academy of sciences Beijing 100049 （China）

The sediment redox potential was raised in the laboratory to estimate reduction of internal available phosphorus loads,such as soluble reactive phosphorus(SRP)and total phosphorus(TP),as well as the main elements of sediment extracts in Dianchi *** strongly reducing substances in sediments,which mainly originated from anaerobic decomposition of primary producer residues,were responsible for the lower redox *** a range of -400 to 2.0 mV raising the redox potential of sediments decreased TP and SRP in interstitial *** potentials exceeding 32. mV caused increases in TP,whereas SRP maintained a relatively constant minimum *** concentrations of Al,Fe, Ca^(2.),Mg^(2.),K^+,Na^+ and S in interstitial water were also related to the redox potential of sediments,suggesting that the mechanism for redox potential to regulate the concentration of phosphorus in interstitial water was complex.

关键词： Dianchi lake interstitial water phosphorus redox potential sediment

长江中游典型湖泊沉积物重金属分布特征、生态风险评估及溯源

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环境科学 2024年第3期45卷 1402-1414页

作者：卢洪斌卢少勇李响张森霖黄张根中国环境科学研究院湖泊水污染治理与生态修复技术国家工程实验室环境基准与风险评估国家重点实验室北京100012 中国科学院山西煤炭化学研究所煤转化国家重点实验室太原030001 北京师范大学水科学研究院北京100875

集中采集洞庭湖、洪湖和赤湖表层沉积物样品并检测其中10种重金属含量,使用地理信息系统表征空间分布,利用地累积污染指数法(Igeo)、富集因子法(EF)和潜在生态风险指数法(RI)协同评估重金属积累的潜在风险,并利用相关性分析(Pearson)和... 详细信息

集中采集洞庭湖、洪湖和赤湖表层沉积物样品并检测其中10种重金属含量,使用地理信息系统表征空间分布,利用地累积污染指数法(Igeo)、富集因子法(EF)和潜在生态风险指数法(RI)协同评估重金属积累的潜在风险,并利用相关性分析(Pearson)和主成分分析(PCA)溯源.结果表明,Cd元素的污染状况和潜在生态风险最为严重,东洞庭湖、洪湖和赤湖中ω(Cd)的平均值分别为2.85、1.59和3.57 mg·kg^(-1),分别是对应省份土壤背景值的2..87、11.36和37.58倍,均超出风险筛选值(0.6 mg·kg^(-1)),其中赤湖超出风险管制值(3.0 mg·kg^(-1)).除Cd外,洪湖中的As值得关注,赤湖中的Cu、As、Zn和Pb都不容忽视.三湖的潜在生态风险排序为:赤湖(RI=1 12.)>东洞庭湖(RI=831)>洪湖(RI=42.).重金属来源主要是工矿业冶采、农业生产和水产养殖等,部分重金属(Mn和Cu)为自然源.研究对长江中游典型湖泊沉积物重金属防控具有重要意义.

关键词：长江中游典型湖泊沉积物重金属污染特征潜在生态风险源解析

Distribution and controls of petroliferous plays in subtle traps within a Paleogene lacustrine sequence stratigraphic framework, Dongying Depression, Bohai Bay Basin, Eastern china

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Petroleum Science 2020年第1期17卷 1-22页

作者： Ji-Chang Zhu Cai-Neng Zou You-liang Feng Shu Jiang Wei-An Wu Ri-xiang Zhu Miao Yuan State Key laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China University of chinese academy of sciences Beijing 100049China Research institute of Petroleum Exploration and Development PetroChinaBeijing 100083China Energy and Geoscience institute(EGI) University of UtahSalt Lake CityUT 84108USA

The characteristics of petroliferous plays in subtle traps within a sequence stratigraphic framework in the Dongying Depression are investigated in this *** bodies within lowstand systems tracts(LSTs)of sequences,comprising incisedchannel fills,sublacustrine fans,deltas in LSTs,controlled by syndepositional normal faults,and sand bodies within transgressive systems tracts(TSTs)to early highstand systems tracts(HSTs),consisting of beach bars,and turbidites,controlled by the prodelta slope,paleorelief,and syndepositional normal faults,are good subtle *** and shale of deep lake subfacies in TSTs to early HSTs of sequences are source and cap *** overpressure is the dominant dynamic factor for hydrocarbon migration from source rock to the subtle *** faults,sand bodies,and unconformities function as conduit *** bodies distributed in the abnormal overpressure source rocks within LSTs to early HSTs are petroliferous plays in lithologic *** petroliferous plays in stratigraphic traps are controlled by unconformities at margins of the Depression.

关键词： Subtle traps Sand bodies within lowstand systems tract Syndepositional normal fault Abnormal overpressure Dongying Depression

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鄱阳湖流域水沙变化及出湖水沙模拟研究

人民长江 2024年第3期55卷 97-104页

作者：香天元孙思瑞王超吴绍飞长江水利委员会水文局湖北武汉430010 长江水利委员会水文局长江中游水文水资源勘测局湖北武汉430010 南昌工程学院江西南昌330099

自2.世纪50年代以来,鄱阳湖流域气候发生显著变化,人类活动日益频繁,降水、产流能力和产沙能力都发生了明显变化。基于鄱阳湖流域“五河”入湖控制站以及湖口水文站数据,运用Mann-Kendall检验法和双累积曲线法确定了年输沙量突变时间点... 详细信息

自2.世纪50年代以来,鄱阳湖流域气候发生显著变化,人类活动日益频繁,降水、产流能力和产沙能力都发生了明显变化。基于鄱阳湖流域“五河”入湖控制站以及湖口水文站数据,运用Mann-Kendall检验法和双累积曲线法确定了年输沙量突变时间点,再利用累积量斜率变化分析法量化降水、产流能力和产沙能力对鄱阳湖入湖沙量的影响;在此基础上,提出了变分模态分解、LSTM神经网络和完全逐步抽样技术等多方法耦合的水沙模拟模型及其评价方法,并建立了研究区域鄱阳湖湖口站水沙模拟模型。研究结果表明:不论是“五河”入湖沙量变化,还是湖区泥沙淤积量变化,以降水变化为代表的气候变化因素对其影响较小,主要影响还是来自人类活动因素;但在具体的变化规律上却存在差异,人类活动对入湖沙量的贡献率呈上升趋势,但对同期鄱阳湖湖区淤积沙量的影响贡献率则呈现先降后升的趋势。水沙模拟分析表明,湖口站出湖月径流量、出湖月输沙量的模拟过程与实测过程较为吻合,取得了较高模拟精度,湖口、星子站水位对模拟精度的提升贡献较小。

关键词：水沙变化水沙模拟归因分析鄱阳湖