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Modeling the Roles of Precipitation Increasing in Glacier Systems Responding to Climate Warming—Taking Xinjiang Glaciated Region as Example

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Journal of Mountain Science 2005年第4期2卷 306-312页

作者： WANG Xin XIE Zichu LIU Shiyin TAO Jianjun HAN Yongshun YANG Yuelong research institute of Geo-spatial Information Science Hunan University of Science ＆ Technology Xiangtan 411201 Hunan China key laboratory of Ice Core and cold Region＇s environment Cold and Arid Regions Environmental and Engineering Research Institute CAS Lanzhou 730000 China institute of Resources and environment Hunan Normal University Changsha 410081 China institute of Tibetan Plateau research CAS Beijing 100029 China

The studies on prediction of climate in Xinjiang almost show that the precipitation would increase in the coming 50 years, although there were surely some uncertainties in precipitation predictions. On the basis of the structure of glacier system and nature of equilibrium line altitude at steady state （ELAo）, a functional model of the glacier system responding to climate changes was established, and it simultaneously involved the rising of summer mean temperature and increasing of mean precipitation. The results from the functional model under the climatic scenarios with temperature increasing rates of 0.01, 0.03 and 0.05 K/year indicated that the precipitation increasing would play an evident role in glacier system responding to climate change： if temperature become 1 ℃ higher, the precipitation would be increased by 10%, which can slow down the glaciers retreating rate in the area by 4 %, accelerate runoff increasing rate by 8 % and depress the ELAo rising gradient by 24 m in northern Xinjiang glacier system where semi-continental glaciers dominate, while it has corresponding values of only 1%, 5 % and 18m respectively in southern Xinjiang glacier system, where extremely continental glaciers dominate.

关键词： Glacier system climate warming precipitation increasing role

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降温速率和粒径对砂土中甲烷水合物形成过程影响研究

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天然气地球科学 2011年第5期22卷 920-925页

作者：蒋观利吴青柏展静中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室甘肃兰州730000

为研究降温速率和多孔介质粒径对天然气水合物形成过程的影响,在2种不同粒径的砂土中开展了甲烷水合物的形成实验研究。5个不同的降温速率被应用到2种粒径砂土中甲烷水合物的形成实验。实验结果表明,降温速率对砂土中甲烷水合物的成核... 详细信息

为研究降温速率和多孔介质粒径对天然气水合物形成过程的影响,在2种不同粒径的砂土中开展了甲烷水合物的形成实验研究。5个不同的降温速率被应用到2种粒径砂土中甲烷水合物的形成实验。实验结果表明,降温速率对砂土中甲烷水合物的成核时间有明显的影响。降温速率越快,甲烷水合物所需的成核时间就越短。同时,降温速率越慢,甲烷气体形成甲烷水合物的气体转化率就越高。不同的降温速率也影响形成实验中降温阶段和恒温阶段的甲烷水合物形成情况。在较低的降温速率下,恒温阶段的气体转化率相对较少。不同的多孔介质对甲烷水合物的形成过程也具有明显的影响。相对来说,在相同条件下,甲烷水合物在粗砂土中比在细砂土中更容易形成;在粗砂土中形成甲烷水合物,其气体转化率比在细砂土中形成的甲烷水合物更高。

关键词：甲烷水合物降温速率粒径砂土成核时间气体转化率

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Thermal features of Qinghai-Tibet Railway Embankment with Crushed-stone Slope Protection in Permafrost regions

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地学前缘 2009年第S1期16卷 58-58页

作者： Guoyu Li,Ning Li,Wei Ma,Huijun Jin,Yu Sheng state key laboratory of frozen soil engineering,cold and arid regions environmental and engineering research institute, chinese academy of Science,lanzhou 73.000,china.

The Embankment with Crushed-Stone Slope Protection(ECSSP) in permafrost regions is an effective measure to cool subgrade and protect *** can mitigate the engineering hazards of the Qinghai-Tibet railway in the permafr... 详细信息

关键词： Qinghai-Tibet railway embankment with crushed-stone slope protection mechanisms of cooling effect thermal regime heat flow

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Concentration and seasonal variation of 10Be in surface aerosols of Lhasa,Tibet

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Science Bulletin 2010年第23期 2575-2581页

作者： HUANG Jie1,7,KANG ShiChang1,2,SHEN ChengDe3,CONG ZhiYuan1,LIU KeXin4,WANG Wei5 & LIU LiChao6 1 key laboratory of Tibetan environment Changes and Land Surface Processes,institute of Tibetan Plateau research,chinese academy of sciences,Beijing 100085,china 2 state key laboratory of Cryospheric Science,chinese academy of sciences,lanzhou 73.000,china 3 key laboratory of Isotope Geochronology and Geochemistry,Guangzhou institute of Geochemistry,chinese academy of sciences,Guangzhou 510000,china 4 state key laboratory of Nuclear Physics and Technology,Peking University,Beijing 100871,china 5 institute of Plateau Atmosphere and environment sciences,Tibet Meteorological Bureau,Lhasa 850000,china 6 cold and arid regions environmental & engineering research institute,chinese academy of sciences,lanzhou 73.000,china 7 Graduate University of the chinese academy of sciences,Beijing 100049,china

Thirty samples of total suspended particles were collected at a site in western part of Lhasa,Tibet from August 2006 to July *** 10Be concentrations were determined by Accelerator Mass Spectrometer (AMS).Analysis of correlation between 10Be concentrations and meteorological factors revealed that the wet scavenging has little effect on 10Be.10Be can be used as a proxy of transport processes of the upper atmosphere over the Tibetan *** of correlation between 10Be concentrations and NCEP reanalysis data demonstrated that higher 10Be concentrations in spring were probably caused by the atmosphere exchange from stratosphere to troposphere during February to *** 10Be concentrations during August to September were consistent with the synchronous lower O3 values,suggestive of both 10Be and O3 were probably influenced by the atmosphere exchange from troposphere to stratosphere.

关键词： 10Be concentration background value seasonal variation Lhasa

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黄河源区景观格局与生态功能的动态变化

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生态学报 2002年第10期22卷 1587-1598页

作者：王根绪郭晓寅程国栋中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室兰州730000

利用 2 0世纪 70年代、80年代与 90年代三期遥感资料 ,选取有代表性的 9个有关度量景观空间结构与景观异质性的定量指标 ,通过 FRAGSTATS计算方法 ,系统研究了黄河源区景观生态结构与景观格局变化 ,表明在近 30 a来 ,区域景观空间格局... 详细信息

利用 2 0世纪 70年代、80年代与 90年代三期遥感资料 ,选取有代表性的 9个有关度量景观空间结构与景观异质性的定量指标 ,通过 FRAGSTATS计算方法 ,系统研究了黄河源区景观生态结构与景观格局变化 ,表明在近 30 a来 ,区域景观空间格局趋于破碎化和多样化 ,其形成与发展的主要内在因素是高寒稀疏化草原草地、黑土化与杂类草草地和沙化草地等景观类型的迅速发展 ,其景观面积分别增加了 384 .1 6 %、6 6 .6 3%和 4 2 1 .0 9% ;选取景观生物生产力、景观土壤养分、景观植被覆盖度等景观功能的表征参数 ,提出了景观格局动态演变下分析景观功能变化的定量方法及其数学模型。在明确近 30 a来区域景观格局演变特征的基础上 ,研究了黄河源区不同时段不同景观类型间生态功能的转移流动特征及其区域生态环境效应 ,表明 :近 30 a来 ,黄河源区景观功能变化强烈 ;区域景观动态演变将形成区域内部景观功能向减退与增强两个方向的变化 ,两个方向的强度均衡将形成区域整体生态功能的特征。研究区域景观格局的动态变化所引起的区域生态功能演变特征。

关键词：黄河源区景观格局生态功能动态变化

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粉土内甲烷水合物形成与分解过程中的水分特征

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天然气地球科学 2009年第4期20卷 616-619,626页

作者：张鹏吴青柏王英梅中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室甘肃兰州730000

用可探测土壤内部水含量变化的pF-meter探头开展了甲烷水合物形成与分解过程中多孔介质内部水含量变化研究,结果表明,该新型研究方法可有效探测实验过程中多孔介质内水含量变化。通过研究指出:水合物生成时会对介质内的水产生吸力,将水... 详细信息

用可探测土壤内部水含量变化的pF-meter探头开展了甲烷水合物形成与分解过程中多孔介质内部水含量变化研究,结果表明,该新型研究方法可有效探测实验过程中多孔介质内水含量变化。通过研究指出:水合物生成时会对介质内的水产生吸力,将水向水合物处抽吸;水合物分解时会释放水,使介质内水含量增大;温度升高会使存于多孔介质内毛细管中的水向下流动;水合物在粉土中的二次形成范围比一次形成范围更大。

关键词：甲烷水合物形成与分解粉土水分

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Nonlinear Analysis on Space-time Expending of Artificial frozen Wall for Supporting Deep Foundation Pit

Nonlinear Analysis on Space-time Expending of Artificial Fro...

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第八届国际冻土工程会议

作者： Fujun Niu~1,Huimin Xia~2,Zhiyin Xu~1,Zhanju Lin~1 (1.state key laboratory of frozen soil engineering,cold and arid regions environmental and engineering research institute,CAS,lanzhou,china 73000 2.engineering institute,University of Science and Technology,Nanjing,china 210007)

＜正＞The artificial ground freezing（AGF） technique has significant advantages in supporting deep foundation pit and subway tunnel *** application of AFG technique,Sanger-Sayles formula is convenient to engineering *** method is commonly used in thermal calculation of artificial frozen wall expending based on the solution of Fourier’s thermal equation with the axisymmetric boundary conditions far from the practical *** somewhat unreasonable hypothesis of the temperature distribution adopted in the energy calculation makes the result ***,the formula can only deal with the problems with single value of thermal physical *** this paper,based on finite element method analysis,we develop a computational analysis on the artificially freezing process with nonlinear changing of the thermal physical parameters,and simulate expending of the frozen wall *** general expressions related to engineering design of the soil temperature distribution of the wall,energy exhaust and the general form concerning the energy exhaust during the freezing process are proposed.

关键词： finite element method artificial ground freezing nonlinear properties energy exhaust

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肃南县山地草原畜牧业的发展模式

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生态经济 2001年第11期17卷 57-59页

作者：周立华樊胜岳张明军中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室兰州730000

本文以祁连山区的肃南县为实验基地 ,通过对山地草原牧区生态保护和经济发展之间现存问题的分析 ,提出了以草原管理、牲畜繁育和产业发展为主要内容的山地草原畜牧业的生态经济发展模式。它将山地草原的生态保护与农户的经济增长兼容起... 详细信息

本文以祁连山区的肃南县为实验基地 ,通过对山地草原牧区生态保护和经济发展之间现存问题的分析 ,提出了以草原管理、牲畜繁育和产业发展为主要内容的山地草原畜牧业的生态经济发展模式。它将山地草原的生态保护与农户的经济增长兼容起来 ,从而成为山地草原畜牧业的一个可持续发展模式。

关键词：肃南县山地草原畜牧业发展模式可持续发展生态保护农户经济增长

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Current developments of research on permafrost engineering and cold region environment:a report of the 8^(th) International Symposium on Permafrost engineering

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research in cold and arid regions 2010年第2期2卷 93-103页

作者： FuJun Niu 1,2,GuoYu Li 1,ShuPing Zhao 1,ShuJuan Zhang 1,YongGuo Zhao 2,HuiJun Jin 1 1.state key laboratory of frozen soil engineering,cold and arid regions environmental and engineering research institute,chinese academy of sciences,lanzhou,Gansu Province 73.000,china 2.key laboratory of Highway Construction and Maintenance Technology for Permafrost regions of Ministry of Communications,CCCC First Highway Consultants Co.,Ltd.,Xi’an,Shaanxi Province 710068,china state key laboratory of frozen soil engineering Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of ScieneesLanzhouGansu Province 730000China key laboratory of Highway Construction and Maintenance Technology for Permafrost regions of Ministry of Communications CCCC First Highway Consultants Co.Ltd.Xi'anShaanxi Province 710068China state key laboratory of frozen soil engineering Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of ScieneesLanzhouGansu Province 730000China key laboratory of Highway Construction and Maintenance Technology for Permafrost regions of Ministry of Communications CCCC First Highway Consultants Co.Ltd.Xi'anShaanxi Province 710068China

The Eighth International Symposium on Permafrost engineering was held in Xi’an,china,October *** major topics discussed in the symposium included:permafrost engineering (involving design,construction and evaluation);mitigation of frost hazards in the regions affected by seasonally frozen ground;properties of frozen soils,model development and their applications;frost hazards and periglacial environments in mountain and plateau regions;climatic,environmental and cryospheric changes;and permafrost hydrology,cold regions water resources and land *** papers submitted to the symposium and lectures during the meeting represented some new developments of research on cold region engineering and *** we summarized the works of the symposium in topics including:Permafrost engineering;General geocryology;Properties of frozen soils:model development and their applications;And climatic,environmental and cryospheric *** the symposium,the attendees pointed out that future studies should pay more attention to theoretical study and engineering mechanism study,and also on interaction between climate change and cold region environments and their engineering affects.

关键词： the 8th symposium permafrost engineering cold region environment summarizing

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Distribution of δ18O in surface snow along a transect from Zhongshan Station to Dome A,East Antarctica

Distribution of δ18O in surface snow along a transect from ...

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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： DING MingHu~(1,2,3*),XIAO CunDe~2,JIN Bo~4,REN JiaWen~2,QIN DaHe~2 & SUN WeiZhen~2 1 Division of Cenozoic Geology and environment,institute of Geology and Geophysics,chinese academy of sciences,Beijing 100029,china 2 state key laboratory of Cryospheric sciences,cold and arid regions environmental and engineering research institute,chinese academy of sciences,lanzhou 73.000,china 3 Graduate University of chinese academy of sciences,Beijing 100049,china 4 chinese Arctic and Antarctic Administration,Beijing 100860,china

Surface snow samples were collected during the 14th(1997/1998)and 24th(2007/2008)chinese National Antarctica research Expeditions along a transect from Zhongshan Station to Dome *** stable oxygen isotope ratios of these samples were measured to investigate their relationships with temperature and geographical parameters(latitude,longitude,altitude and distance to the coast).The results reveal a strong positive correlation(R=0.945)betweenδO and mean annual temperature,with a gradient of 0.84‰℃,which is a little higher than that in Terre Adelie *** analyses also show that theδO of surface snow is strongly correlated with distance to the coast(R=0.942),latitude(R=0.942),and altitude(R=0.941).But no significant correlation was found betweenδO and longitude in study *** should be the most important factor influencing theδO distribution because of distinctive ***δO-altitude and T-altitude gradients along this transect are determined to be-1.1‰/100 m and 1.31℃/100 m,respectively.

关键词： Antarctica ITASE isotope Dome A δ18O chinaRE

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