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Fluvial terraces and their implications for Weihe River valley evolution in the Sanyangchuan Basin

Science China Earth Sciences 2017年第3期60卷 413-427页

作者： gao hongshan LI ZongMeng LIU XiaoFeng PAN BaoTian WU YaJie LIU FenLiang Key Laboratory of Western China's Environmental System Ministry of EducationCollege of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China Lanzhou Institute of Seismology China Earthquake AdministrationLanzhou 730000China

Fluvial terraces are important geomorphic markers for modern valley *** coupled with numeric ages,terraces can provide abundant information about tectonic,climatic,paleohydrological and the paleoenvironmental *** the basis of the paleomagnetic,electron spin resonance(ESR) and optically stimulated luminescence(OSL) dating,in addition to an investigation of local loess-paleosol sequences,we confirmed that 13 fluvial terraces were formed,and then preserved,along the course of the Upper Weihe River in the Sanyangchuan Basin over the past 1.2 *** of the characteristics and genesis of these terraces indicate that they resulted from the response of this particular river system to climate change over an orbital *** changes can further be placed within the context of local and regional tectonic uplift,and represent an alternation between lateral migration and vertical incision,dependent upon the predominance of climatic and tectonic controls during different *** of the terraces are strikingly similar in that they have several meters of paleosols which have developed directly on top of fluvial deposits located on the terrace treads,suggesting that the abandonment of terraces due to river incision occurred during the transitions from glacial to interglacial *** temporal and spatial differences in the distribution patterns of terraces located on either side of the river valley indicate that a tectonic inversion occurred in Sanyangchuan Basin at-0.62 Ma,and that this was characterized by a transition from overall uplift to depression induced by fault *** studies of the Basin's terraces indicate that formation of the modern valley of the Upper Weihe River may have begun in the late Early Pleistocene between1.4-1.2 Ma.

关键词： River terrace Valley evolution Tectonic activity Climate change Sanyangchuan Basin

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Quantitative analysis of planation surfaces of the upper Yangtze River in the Sichuan-Yunnan Region, Southwest China

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Frontiers of Earth Science 2019年第1期13卷 55-74页

作者： Fenliang LIU hongshan gao Baotian PAN Zongmeng LI Huai SU Key Laboratory of Westem China's Environmental Systems (Ministry of Education) College of Earth and EnvironmentalSciences Lanzhou UniversityLanzhou 730000China School of Geographic Sciences Xinyang Normal UniversityXinyang 464000China College of Tourism and Geography Science Yunnan Normal UniversityKunming 650500China

Identification of the planation surfaces (PSs)is key for utilizing them as a reference in studying the long- term geomorphological evolution of the Upper Yangtze River Basin in the Sichuan-Yurman region,Southwest *** a combined method of DEM-based fuzzy logic and topographic and fiver profiles analysis and based on a comprehensive analysis of four morphometfic parameters:slope,curvature,terrain raggedness index, and relative height,we established the relevant fuzzy membership functions,and then calculated the membership degree (MD)of the study *** show that patches with a MD>80% and an area>0.4 km^2 correspond well to the results of Google Earth and field investigation,representing the PS *** consist of 1764 patches with an altitude,area,mean slope,and relief of mostly 2000-2500 m above sea level (asl),0-10 km^2,4°-9°,0-500 m,respectively,covering 9.2% of the study area's landscape,dipping to southeast,decreasing progressively from northwest to southeast in altitude,and with no clear relation between each patch's altitude and slope,or *** these results indicate that they are remnants of once regionally continuous PSs which were deformed by both the lower crust flow and the faults in upper crust,and dissected by the network of Upper Yangtze ***,topographic and river profiles analysis show that three PSs (PS1-PS3)well developed along the main valleys in the Yongren-Huili region, indicating several phases of uplift then planation during the Late Cenozoic *** on the incision amount deduced from projection of relict river profiles on PSs, together with erosion rates,breakup times of the PS 1,PS2,and PS3 were estimated to be 3.47 Ma,2.19 Ma,and 1.45 Ma,respectively,indicating appearance of modem Upper Yangtze River valley started between the Pliocene to early Pleistocene.

关键词： planation surface fuzzy logic topographic analysis river profile analysis Upper Yangtze River Southwest China

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Sulfide mineral dissolution microbes: Community structure and function in industrial bioleaching heaps

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Green Energy & Environment 2019年第1期4卷 29-37页

作者： Yan Jia Qiaoyi Tan Heyun Sun Yupeng Zhang hongshan gao Renman Ruan National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process Engineering Chinese Academy of Sciences Key Laboratory of Green Process and Engineering Institute of Process Engineering Chinese Academy of Sciences Wanbao Mining Limited

Heap bioleaching is one of the most clean and economical processes for recovery of low-grade and complex ores, because the sulfide minerals are natural habitats for acidophiles capable of iron-and sulfur-oxidation. The most exciting advances in heap bioleaching are occurring in the field of microbiology, especially with the development of advanced molecular biology approaches. These chemolithotrophic microorganisms living in the acid mine environment fix N_2 and CO_2 and obtain energy for growth from soluble ferrous iron and reduced inorganic sulfur compounds during oxidation of sulfide minerals. The ferric iron as oxidant and sulfuric acid are a result of microbial activity and provide favorable conditions for the dissolution of sulfide minerals. Various microbial consortia were applied successfully in commercial bioleaching heaps around the world, and microbial community and activity were adapted related to the local climatic conditions, ore characteristics and engineering configuration. This review focuses on diversity of bioleaching microbes, their role in heap bioleaching processes, their community structure and function in industrial heaps and the relation to the ore characteristics and the engineering configuration, to give implications for optimizing leaching efficiency of heap bioleaching.

关键词： Acidophiles Engineering configuration Heap bioleaching Microbial activity Microbial community

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Instability characteristics of the East Asian Monsoon recorded by high-resolution loess sections from the last interglacial (MIS5)

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Science China Earth Sciences 2007年第7期50卷 1067-1075页

作者： GUAN QingYu PAN BaoTian gao hongshan LI BingYuan WANG JunPing SU Huai Key Laboratory of Western China’s Environmental Systems(MOE) Lanzhou UniversityLanzhou 730000China Institute of Geographical Sciences and Natural Resources Chinese Academy of SciencesBeijing 100101China

The selection of high-resolution loess sections is needed in order to determine the climatic variability of the East Asian Monsoon during the last interglacial. Two sequences of S1 on the eastern and west-ern sides of the Liupan Mountain were both composed of five paleosol layers and four loess layers,indicating that there were five strong summer monsoon events and four strong winter monsoon events in MIS5. This corresponds with other records of the East Asian Monsoon,along with NGRIP and the North Atlantic records,implying that the climate of the Northern Hemisphere was very instable during the last interglacial. Two layers of paleosols and one layer of loess had developed during MIS5a and MIS5c. Compared with MIS5e,the climate in MIS5a and MIS5c fluctuated more intensively on a millen-nial scale,whereas the climate was relatively stable in MIS5e.

关键词： last interglacial paleosol East Asian monsoon Shagou loess section Wangguan loess section Liupan Mountain

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Rosgen stream classification and fluvial processes of the Shiyang River,China

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Journal of Mountain Science 2024年第11期21卷 3886-3897页

作者： LI Ping gao hongshan LI Zongmeng WU Yajie LIU Fenliang YAN Tianqi CHEN Yingying College of Resources and Environment Xizang Agriculture and Animal Husbandry UniversityNyingchi 860000China Key Laboratory of Western China’s Environmental Systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China Henan Key Laboratory for Synergistic Prevention of Water and Soil Environmental Pollution School of Geographic SciencesXinyang Normal UniversityXinyang 464000China Wuwei No.1 Middle School Wuwei 733000China School of Municipal and Surveying Engineering Hunan City UniversityYiyang 413000China

The Shiyang River is an important ecological pillar in northwest China,sustaining Minqin oasis and its surrounding ***,the basin has long been plagued by water scarcity and ecological *** the river classification is critical for understanding the complexity,diversity,and ecological functions of rivers,and the foundation of river management and watershed ecological restoration,it has not received adequate attention in this *** obtain a deeper and comprehensive understanding of the Shiyang River,this study utilizes the Rosgen stream classification system to assess the river morphology,geomorphic features,and hydrologic *** results showed that seven first-level and fourteen second-level river types can be identified along 53 river sections of the Shiyang *** comparison analysis on the hydrologic parameters for each river type demonstrated a strong positive correlation between discharge and all river *** discharge increased,channels with moderate to high width/depth ratios experienced significant lateral adjustments.A consistent channel gradient,coupled with higher discharge,facilitated the transition from single to multiple *** tendencies were more pronounced in rivers where riverbeds were wider and shallower with higher stream ***,water-flow shear stress decreased with the increase in the width/depth *** study offered critical insights into the Shiyang River’s forms and processes and for the river management and ecological restoration practices.

关键词： Rosgen stream classification Fluvial Processes Geometric Channel Parameters The Shiyang River

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Dating and genesis of the upper Weihe River terraces in Longxi basin,China

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Progress in Natural Science:Materials International 2007年第11期17卷 1334-1340页

作者： Pan Baotian, Liu Xiaofeng, gao hongshan, Wang Yong and Li Jijun(Key Laboratory of Western China’s Environmental System, Ministry of Education, Lanzhou University, Lanzhou 730000, China) Key Laboratory of Western China’s Environmental System Ministry of Education Lanzhou University Lanzhou 730000 China

Seven terraces along the Weihe River in Longxi basin have been investigated. These terraces all consist of archetypal duality in structure, namely the floodplain deposits and the layer of gravels overlaid by varying thickness of the loess. By resorting to various dating approaches such as palaeomagnetic, optically stimulated luminescenece (OSL), 14C and loess-paleosol sequence, we provide preliminary timing of these seven terraces along upper Weihe River. Analysis on sedimentation characteristics and dating of these terraces showed that seven terraces may be jointly generated by tectonic uplifts and climatic changes. Tectonic uplifts may accommodate initial river incision, and climatic change may be responsible for processes of subsequent channel widening and aggradation. Aggradation normally occurs during glacial periods, in contrast to down-cuttings during transitions from glacial to interglacial period. Moreover, on the basis of the timings and heights of these terraces, we infer that the long-term rate of river incision was determined to be 0.2 m/kyr during the last 870 kyr, which differs from other river incision rates. This discrepancy may reflect spatio-temporal differentiation of tectonic activities in the Qinling orogenic belt during the Pleistocene.

关键词： loess stratigraphy river terraces climate change Upper Weihe River

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地理学的时代特征、二元论与可持续发展

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热带地理 2024年第1期44卷 32-35页

作者：高红山兰州大学资源环境学院西部环境教育部重点实验室兰州730000

地理学作为一门学科总体上与科学体系的发展亦步亦趋。20世纪自然地理学与人文地理学的分裂曾严重消解了地理学的整体性和统一性,同时专业分化与研究主题的纵深发展造成了学科的空心化。面对21世纪复杂性科学、地球系统科学和新的科学... 详细信息

地理学作为一门学科总体上与科学体系的发展亦步亦趋。20世纪自然地理学与人文地理学的分裂曾严重消解了地理学的整体性和统一性,同时专业分化与研究主题的纵深发展造成了学科的空心化。面对21世纪复杂性科学、地球系统科学和新的科学综合体的到来,在全球化和可持续发展的大背景下,我们应该在大学课堂上让自然与人文再度融合,通过学术语言的规范、学科理论的构建、研究范式的转换,将二元论的影响消融于无形,能以一种整体化、系统性的观念来应对人类的未来和地球的可持续性发展这一艰巨而复杂的任务。

关键词：二元论地理学复杂系统综合研究可持续发展自然地理学人文地理学

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Terrace dating as an archive of the run-through of the Sanmen Gorges

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Progress in Natural Science:Materials International 2005年第12期15卷 1096-1103页

作者： PAN Baotian,WANG Junping,gao hongshan,CHEN Yingying,LI Jijun and LIU Xiaofeng Key Laboratory of Western China’s Environmental Systems,Ministry of Education,and Department of Geography,Lanzhou University,Lanzhou 730000,China Key Laboratory of Western China''s Environmental Systems Ministry of Education China. Department of Geography Lanzhou University Lanzhou 730000 China

Analysis of morphological properties in the Sanmen Gorges region of the Yellow River shows that four river terraces have been developed at the entrance to the ***,thick aeolian loess-paleosol sequence was deposited on the terraces,which makes it easy to date the *** dating of paleomagnetic,loess-paleosol sequence matching and thermoluminescence show that terraces T2,T3 and T4 were formed 0.129 Ma,0.625 Ma and 0.865 Ma ago,*** formation of these terraces in this region indicates that the Yellow River has experienced four intensive downcutting events during the last 0.9 *** Yellow River cut through the Sanmen Gorges and inpoured into the East China Sea no later than 0.865 Ma.

关键词： river terrace paleomagnetic dating Yellow River loess

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某银矿资源的综合利用研究

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矿产综合利用 1999年第1期 25-28页

作者：高洪山北京有色全属研究总院北京100088

本文介绍了某银矿试验矿石的特点，以及采用银铅锌混合浮选工艺所取得的选别效果。混合浮选精矿含银171009／t、银回收率91．96％、铅＋锌含量61．35％、二氧化硅含量为3．89％，精矿产品可直接销售冶炼厂。为该银矿资源的合理利用找到... 详细信息

本文介绍了某银矿试验矿石的特点，以及采用银铅锌混合浮选工艺所取得的选别效果。混合浮选精矿含银171009／t、银回收率91．96％、铅＋锌含量61．35％、二氧化硅含量为3．89％，精矿产品可直接销售冶炼厂。为该银矿资源的合理利用找到了有效途径。

关键词：混合浮选混合精矿综合利用银矿金矿

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欧盟鼓励中小企业创新的政策与措施

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全球科技经济瞭望 2010年第4期25卷 51-56页

作者：高洪善中国科学技术部北京100038

本文分析了欧盟促进中小企业发展与创新的政策和措施。“首先想到小的”已成为欧盟制定政策的原则。本文指出，《欧洲小企业法》总结了多年来欧盟积极鼓励中小企业发展的一些好做法，是欧盟第一个促进中小企业发展的综合性政策框架，该... 详细信息

本文分析了欧盟促进中小企业发展与创新的政策和措施。“首先想到小的”已成为欧盟制定政策的原则。本文指出，《欧洲小企业法》总结了多年来欧盟积极鼓励中小企业发展的一些好做法，是欧盟第一个促进中小企业发展的综合性政策框架，该文件提出了促进中小企业发展的十项原则。介绍了欧盟支持中小企业创新的主要措施，并提出了成立政策性金融中介机构、扶持中小企业创新要有针对性以及加强政策集成等政策建议。

关键词：中小企业创新政策结构基金金融服务

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