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Prediction of Hidden Ore Bodies using Integrated Geology,Source of Fluids and Stratagem EH4 Geophysical Survey in Kuoerzhenkuola Gold Deposit in xinjiang,China

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Prediction of Hidden Ore Bodies using Integrated Geology,Sou...

基于SSM的伊犁河流域主导产业选择定量化研究

中国科学院地质与地球物理研究所2008学术年会

作者： Ping SHEN,Yuanchao SHEN,Tiebing liU,heping ZHU,lijuan WANG, Qingdong ZENG and Guangming li Key Laboratory of Mineral Resources,institute of Geology and Geophysics,chinese academy of sciences,Beijing,China

The Kuoerzhenkuola gold deposit is located in the Sawur gold belt in xinjiang,*** integrated geological, geochemical and geophysical investigation was carried out in the Kuoerzhenkuola gold deposit,to determine the extension of the principal mineralized system,in the search for new ***-examination of the rocks and structures in the Kuoerzhenkuola area showed that the study area features an elliptical caldera where the gold deposit lies.A re-investigation of the mine geology found that the mineralization at the Kuoerzhenkuola gold deposit is not controlled by the EW-striking regional fault as previously assumed,but by a caldera fracture system locally superimposed by regional faults;the host rocks are andesites and dacites of the Carboniferous Heishantou Group rather than the crypto-explosive breccia of the Devonian Sawurshan *** components of fluid inclusions from quartz,trace element chemistry of pyrite and fluid inclusions in pyrite,Pb isotopes of pyrite,and whole-rock geochemistry and Pb isotopes of the country rocks are used to study the source of fluids at Kuoerzhenkuola gold *** ore-forming fluids are characterized by low-moderate temperatures and low salinities estimated from fluid inclusion *** mass spectrometry indicated a CO-bearing *** coupled plasma-mass spectrometry of the fluid inclusions indicated high Cu (average 70 ppm) for the Au mineralization,whereas the host rocks have low Cu(average 33 ppm),indicating that Cu of the ore-forming fluids originated from magmatic fluid rather than the volcanic *** isotopes of ores and host volcanic rocks indicate a similar,mixed source and some Pb could be sourced from the *** implied that magmatic fluids could play an important role in the Au mineralization *** new geological findings and the fluids derived mainly from the magmatic fluids suggest that the ore-forming fluids originate at depth,and are transported and precipi

关键词： gold mineralization prediction of hidden ore bodies source of fluids Stratagem EH4 xinjiang.

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山地学报 2010年第2期28卷 199-205页

作者：陈忠升陈亚宁李卫红陈亚鹏中国科学院新疆生态与地理研究所/中国科学院绿洲生态与荒漠环境重点实验室中国科学院研究生院

在梳理了传统主导产业选择基准理论与偏离-份额分析法基本原理的基础上,选取伊犁河流域1997年和2006年两个时间点的30个工业部门为分析对象,以国家范围内的30个工业部门的情况为参照,对研究区30个工业部门进行了份额偏离分量、结构偏离... 详细信息

在梳理了传统主导产业选择基准理论与偏离-份额分析法基本原理的基础上,选取伊犁河流域1997年和2006年两个时间点的30个工业部门为分析对象,以国家范围内的30个工业部门的情况为参照,对研究区30个工业部门进行了份额偏离分量、结构偏离分量和竞争力偏离分量的综合比较分析。结果表明,农副食品加工业、纺织业以及电力、热力的生产和供应业3个产业部门最有可能成为主导产业;同时,也说明研究方法具有基本客观性、有效性和较强的操作性。

关键词：偏离-份额分析法伊犁河流域主导产业选择

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天山荒漠景观内蒸发地球化学垒的研究

土壤学报 2004年第2期41卷 161-169页

作者：黄标龚子同中国科学院南京土壤研究所南京210008

天山荒漠景观内的蒸发地球化学垒可分为碳酸盐蒸发垒、石膏蒸发垒和易溶盐蒸发垒。这些蒸发垒沿天山山脉呈带状分布 ,自天山山脉至两侧盆地依次分布碳酸盐蒸发垒、石膏蒸发垒和易溶盐蒸发垒。土壤中碳酸盐的积聚导致Mn、Ti、Fe、V、Sc... 详细信息

天山荒漠景观内的蒸发地球化学垒可分为碳酸盐蒸发垒、石膏蒸发垒和易溶盐蒸发垒。这些蒸发垒沿天山山脉呈带状分布 ,自天山山脉至两侧盆地依次分布碳酸盐蒸发垒、石膏蒸发垒和易溶盐蒸发垒。土壤中碳酸盐的积聚导致Mn、Ti、Fe、V、Sc、Cu、Co和B等元素含量的降低。石膏的富集常伴随着土壤中B和Sr含量的增加。随易溶盐的大量积累 ,元素B的聚集非常明显 ,而Mn、Fe、Ti、V、K、Ba、li、F和Zn等元素含量则明显降低。蒸发地球化学垒对元素的生物有效性也有较明显的影响。碳酸盐的积累明显减低了Fe、Cu、B等元素的生物有效性 ,F元素在碳酸盐蒸发垒内CO2 -3 和HCO-3 含量较高的土壤中生物有效性较高。

关键词：天山荒漠景观蒸发地球化学垒土壤元素有效性分异特征表生地球化学垒物理化学地球化学垒

Rare earth elements of aeolian deposits in Northern China and their implications for determining the provenance of dust storms in Beijing

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Rare earth elements of aeolian deposits in Northern China an...

Climate and topography regulate the spatial pattern of soil salinization and its effects on shrub community structure in Northwest China

中国科学院地质与地球物理研究所2007学术年会

作者： Xiaoping Yang~(a,*),Yongsheng liu~(a,1),Chaozhu li~(a,2), Yuling Song~b,heping Zhu~a,Xindi Jin~a a institute of Geology and Geophysics,chinese academy of sciences,Beijing,China b Department of Physics and Information Technology,Ningxia Normal College,Guyuan,China 1 Present affiliation:China institute of Geoenvironment Monitoring, Beijing. 2 Present affiliation:institute of Geomechanics,chinese academy of Geological sciences,Beijing.

This paper contributes to a better understanding of the source of dust storms in northern China and the relationship between these sources and other aeolian sediments in this *** samples in potential source areas were collected from the Hunshandake Sandy Land,Heaven desert,the loess deposits of the Bashang area,the mountainous basins and valleys north of Beijing and from the Badain Jaran desert and Hulunbaier Sandy Land(Fig.1).Dust samples were collected in Beijing during two dust storms in March 2002 and April *** laboratory methods used in this study included measurements of abundance of trace elements,in particular the rare earth elements(REEs),mineral assemblages and grain *** REE contents,Eu and Ce anomalies show clear differences between various *** is considered to be the key factor influencing REE patterns in the study *** REE abundances and patterns indicate that the aeolian sand north of Beijing,such as in the Heaven desert, is mainly of local origin rather than from desert encroachment from the *** mineral grains carried in dust storms,however, are highly mixed,and may come partly from local sources but mainly from distant desert regions in western China.

关键词： Sandy land Dust storm Rare earth element(REE) Loess Northern China

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Journal of Arid Land 2024年第7期16卷 925-942页

作者： DU Lan TIAN Shengchuan ZHAO Nan ZHANG Bin MU Xiaohan TANG lisong ZHENG Xinjun li Yan State Key Laboratory of desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China University of chinese academy of sciences Beijing 100049China Fukang Station of desert Ecology Chinese Academy of SciencesFukang 831505China State Key Laboratory of Subtropical Silviculture Zhejiang A&F UniversityHangzhou 311300China

Soil salinization may affect biodiversity and species composition,leading to changes in the plant community ***,few studies have explored the spatial pattern of soil salinization and its effects on shrub community structure at the ecosystem ***,we conducted a transect sampling of desert shrublands in Northwest China during the growing season(June–September)in *** salinization(both the degree and type),shrub community structure(e.g.,shrub density and height),and biodiversity parameters(e.g.,Simpson diversity,Margalf abundance,Shannon-Wiener diversity,and Pielou evenness indices)were used to assess the effects of soil salinization on shrub community *** results showed that the primary degree of soil salinization in the study area was light salinization,with the area proportion of 69.8%.Whereas the main type of soil salinization was characterized as sulfate saline soil,also accounting for 69.8%of the total ***,there was a significant reduction in the degree of soil salinization and a shift in the type of soil salinization from chloride saline soil to sulfate saline soil,with an increase in *** mean annual precipitation(MAP),mean annual evapotranspiration(MAE),elevation,and slope significantly contributed to soil salinization and its geochemical *** soil salinization intensified,shrub community structure displayed increased diversity and evenness,as indicated by the increases in the Simpson diversity,Shannon-Wiener diversity,and Pielou evenness ***,the succulent stems and leaves of Chenopodiaceae and Tamaricaceae exhibited clear advantages under these ***,regional climate and topography,such as MAP,MAE,and elevation,had greater effects on the distribution of shrub plants than soil *** results provide a reference for the origin and pattern of soil salinization in drylands and their effects on the community structure of halophyte shrub species.

关键词： soil salinization halophytes shrubland climate change biodiversity drylands Northwest China

Evaluating soil acidification risk and its effects on biodiversity–ecosystem multifunctionality relationships in the drylands of China

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Forest Ecosystems 2024年第2期11卷 162-171页

作者： Lan Du Shengchuan Tian Nan Zhao Bin Zhang Xiaohan Mu lisong Tang Xinjun Zheng Yan li State Key Laboratory of desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi830011XinjiangChina University of chinese academy of sciences Beijing100049China Fukang Station of desert Ecology Chinese Academy of SciencesFukang831505XinjiangChina State Key Laboratory of Subtropical Silviculture Zhejiang A and F UniversityHangzhou311300ZhejiangChina

Background:Soil acidifcationn caused by anthropogenic activities may aft soil biochemical cydling,bidiversity,productivity,and multiple eosystem-related functions in ***,to date,such information is lacking to support this *** Based on a transect survey of 78 naturally assembled shrub communities,we caloulated acid deposition flux in Northwest China and evaluated its likely ecological ffets by testing three altemnative hypotheses,namely:.nidche complementarity,mass ratio,and vegetation quantity hypotheses Rao's quadratic entopy and community-weighted mean traits were employed to represent the complementary aspect of niche complementarity and mass ratio effects,***:We observed that in the past four decades,the concentrations of exchangeable base cations in soil in Northwest China have decreased significantly to the extent of having faced the risk of depletion,whereas changes in the calium carbonate content and pH of soil were not *** deposition primani ly increased the aboweground biomass and shrub density in shrublands but had no sigmificant effect on shrub richness and ecasystem multifunctionality(EMF),indicating that acid deposition had positive but weak ecological effects on dryland *** wd ghted mean of functional traits(representing the mass ratio hypothesis)correlated negatively with EMF,whereas both Rao's quadratic entropy(representing the niche complementarity hypothesis)and aboveground biomass(representing the vegetation quantity hypothesis)correlated positively but insignifcantly with *** biodiversity-EMF relationships highlight the fragility and instability of drylands relative to forest ***:The findings from this study serve as important reference points to understand the ris of soil acidification in arid regions and its impacts on biodiversity-EMF relationships.

关键词： Soil acidification risk Biodiversity Ecosystem multifunctionality Niche complementarity hypothesis Mass ratio hypothesis Vegetation quantity hypothesis

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基于植物水分生理的节水灌溉效果评估

水土保持学报 2011年第5期25卷 252-256页

作者：马建新李卫红黄湘朱成刚付爱红荒漠与绿洲生态国家重点实验室中科院新疆生态与地理研究所乌鲁木齐830011 中国科学院研究生院北京100049

以新垦绿洲主干防护林树种俄罗斯杨(Populus russkii Jabl.)为研究对象,通过对A(膜侧细流沟灌,灌溉定额3 750m3/hm2,少量多次灌溉)和B(漫灌,灌溉定额7 500m3/hm2,隔月灌)灌溉方式下俄罗斯杨树干液流、当年生枝条水势(ψs)以及叶片光合... 详细信息

以新垦绿洲主干防护林树种俄罗斯杨(Populus russkii Jabl.)为研究对象,通过对A(膜侧细流沟灌,灌溉定额3 750m3/hm2,少量多次灌溉)和B(漫灌,灌溉定额7 500m3/hm2,隔月灌)灌溉方式下俄罗斯杨树干液流、当年生枝条水势(ψs)以及叶片光合特征的同步监测,结合气象因子数据,分析比较2种灌溉方式下的俄罗斯杨水分生理特征。结果表明:B方式下俄罗斯杨树干液流速度与A方式比较有所降低,日均下降4.7%,但差异未达到显著水平(Sig.>0.10);2种灌溉方式下俄罗斯杨当年生枝条水势没有通过差异显著性检验(Sig.>0.142);A方式下的俄罗斯杨叶片净光合速率(Pn)、气孔导度(Gs)、瞬时蒸腾速率(Tr)、水分利用效率(WUE)均高于B方式的。综合分析认为,A方式节水效果显著,能够满足研究区俄罗斯杨生长的水分需求,过度灌溉会对俄罗斯杨产生不利影响;植物液流、水势等水分生理指标可做作调控和节水灌溉的科学依据。

关键词：俄罗斯杨液流水势光合特性灌溉方式

Increased population exposures to extreme precipitation in Central Asia under 1.5℃and 2℃global warming scenarios

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Geography and Sustainability 2024年第3期5卷 343-356页

作者： Wei Wei Shan Zou Weili Duan Yaning Chen Shuai li Takahiro Sayama Jianyu Zhu State Key Laboratory of desert and Oasis Ecology Key Laboratory of Ecological Safety and Sustainable Development in Arid LandsXinjiang Institute of Ecology and GeographyChinese Academy of SciencesÜrümqi 830011China University of chinese academy of Science Beijing 100049China Aksu National Station of Observation and research for Oasis Agro-ecosystem Aksu 843017China Disaster Prevention research institute Kyoto UniversityKyoto 6110011Japan

The increase in extreme precipitation(EP)may pose a serious threat to the health and safety of population in arid and semi-arid *** current research on the impact of EP on population in Central Asia(CA)is insufficient and there is an urgent need for a comprehensive ***,we opted for precipitation and temperature data under two Shared Socioeconomic Pathways(SSP2-4.5 and SSP5-8.5)from ten Global Climate Models(GCMs),which were obtained from the NASA Earth Exchange Global Daily Downscaled Projections(NEX-GDDP-CMIP6).By integrating population data in 2020 and 2050(SSP2 and SSP5),we investigated the future changes in EP and population exposure in CA under 1.5℃and 2℃global warming scenarios(GWSs).Our analysis indicates that EP in CA is projected to increase with global *** the SSP5-8.5,the maximum daily precipitation(Rx1day)exhibits an average response rate to global warming of 3.58%/K(1.99-4.06%/K).With rising temperatures,an increasing number of areas and populations in CA will be impacted by EP,especially in the Fergana *** 25%of the population(land area)in CA is exposed to Rx1day with increases of more than 8.31%(9.32%)under 1.5℃GWS and 14.18%(13.25%)under 2℃*** temperature rise can be effective in reducing population exposures to *** instance,limiting the temperature increase to 1.5℃instead of 2℃results in a 2.79%(1.75%-4.59%)reduction in population exposure to ***,we found that climate change serves as the predominant factor influencing the population exposure to EP,while the role of population redistribution,although relatively minor,should not be *** for prolonged drought,the role of population redistribution manifests negatively.

关键词： Extreme precipitation Global warming Population exposure Central Asia

塔克拉玛干沙漠梭梭地上结构和生物量的自相似模型

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生物数学学报 2003年第4期18卷 477-481页

作者：李伟成葛滢潘伯荣常杰浙江大学生命科学学院浙江杭州310029 中国科学院新疆生态与地理研究所新疆乌鲁木齐830011

应用分形自相似原理研究了极端干旱的塔克拉玛干沙漠公路两旁及油田工作区梭梭(Haloxylon ammodendron)的地上结构.研究发现,梭梭枝长、基径和冠幅与植株整个地上部分结构之间存在很好的自相似关系、本文基于自相似原理建立了以分枝推... 详细信息

应用分形自相似原理研究了极端干旱的塔克拉玛干沙漠公路两旁及油田工作区梭梭(Haloxylon ammodendron)的地上结构.研究发现,梭梭枝长、基径和冠幅与植株整个地上部分结构之间存在很好的自相似关系、本文基于自相似原理建立了以分枝推测整株生物量的简洁实用的数学模型.

关键词：梭梭枝条分形自相似地上结构生物量