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Journal of Mountain Science 2011年第3期8卷 484-494页

作者： DONG Zhiwen LI Zhongqin ZHANG Mingjun WANG Feiteng WU Lihua state key laboratory of Cryospheric Sciences Cold and Arid Regions Environmental and Engineering Research Institute /Tianshan Glaeiological Station CAS Lanzhou 730000 China College of Geography and Environment Science Northwest Normal University Lanzhou 730070 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

Snow chemistry on the glaciers of alpine regions is a good indicator of atmospheric environmental *** examine snow chemistry in three snowpits at different altitudes on the Haxilegen Glacier No.51,in the Kuitun River source,Tian Shan,china,during July-September 2004 to *** use correlation analysis,factor analysis and sea-salt tracing methods to examine the characteristics and sources of major ions and mineral dust particles in the *** show that mineral dust particles and major ions in the snow pits vary *** the Asian dust period in springtime,the concentration of mineral dust particles and major ions deposited in snow is high,while the concentration is relatively low during the non-dust period of summer and *** may be caused by dust storm activity in central *** order of major ionic concentrations in the snow packs was determined to be Ca2+ > SO42-> NH4+ > NO3-> Cl-> Na+ > Mg2+ > K+.Ca2+ was the dominant cation;SO42- was the dominant *** find,with the exception of NO3-,that the variabilities of ionic concentrations are highly *** show that the glacier region was significantly affected by dust activity and anthropogenic *** major ions,especially Na+,originate from dust sources of central Asia and from the Ocean,transported by the westerly winds.

关键词： Snow chemistry Mineral dust environmental significance Haxilegen glacier No. 51 Tian Shan

Influence of Degree-Day Factor Variation on the Mass Balance of Glacier No. 1 at the Headwaters of ürümqi River,china

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Journal of Earth Science 2013年第6期24卷 1008-1022页

作者：崔玉环叶柏生王杰刘友存 state key laboratory of Cryospheric Sciences Cold and Arid Regions Environment and Engineering Research InstituteChinese Academy of Sciences School of Resources and environmental engineering Anhui University key laboratory of Water Resources and Environment Tianjin Normal University

The degree-day factor （DDF） is a key parameter in the degree-day model, and the varia- tions in DDF have the significant effects on the accuracy of glacier mass balance modeling. In this study, Glacier No. 1 at the headwaters of Uriimqi （-~O）~Z~=） River in china was selected, and the estimated DDF by stakes-observed mass balance and meteorological data from 1983-2006 was used to analyze the spatio-temporal variability of DDF and its influencing factors, such as climate condition, surface fea- ture, and topography. Then, the ablations from the 1980s to 2000s were estimated using the degree-day modei, and the ablation change from the 1980s to 2000s was divided into the changes caused by climate change and by the ice-surface feature. The following results were obtained：（1） The annual change in DDF for snow was not obvious, whereas that for ice increased, and the increasing trend on the lower glacier was more significant than that on the upper glacier because of decreased albedo caused by vari- ations in ice-surface feature; （2） The DDF for ice clearly decreased with altitude by approximately 0.046 and 0.043 mm.＇C-l-d-Lm-1 on the east and west branches, respectively, and the DDF of the west branch was obviously larger than that of the east branch in the same altitude belt; （3） the changes in mass balance in the summers from the 1980s to 2000s were -391 and -467 mm on the east and west branches, respectively. Among the total changes, the components directly caused by climate change were -193 and -198 mm, whereas those indirectly caused by ice-surface feature change were -198 and -269 mm on the east and west branches, respectively.

关键词： degree-day factor mass balance,Glacier No. 1 climate change.

Discussion on exploitation of mineral resources and ecological environmental issues in Wenquan, Wushan

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Acta Geochimica 2006年第S1期 44-45页

作者： Zhenming WEI1,2, Guodong ZHENG1,2, Yaling CHOU1,2 1 institute for Geological research, Chinese Academy of Sciences, lanzhou 73000, china 2.state key laboratory of frozen soil engineering, cold and arid regions environmental and engineering research institute, Chinese Academy of Sciences, lanzhou 73000, china

Application and Effect Analysis of the Awning Measure on cold regions

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Application and Effect Analysis of the Awning Measure on Col...

Hydrological Characteristics of the Rongbuk Glacier Catchment in *** Region in the Central Himalayas,china

第八届国际冻土工程会议

作者： Wenjie Feng Zhi Wen Zhizhong Sun Junjie Wu (state key laboratory of frozen soil engineering cold and arid regions environmental and engineering research {12. Chinese Academy of Sciences Gansu lanzhou Donggang West Road 326# china 730000)

＜正＞Due to the globe warm,lead the permafrost into the shrink and thaw,almost all the various initiatives to protect the permafrost measures were adopted to the actual engineering now,the awning are one of these,had be used on the embankment side slope during the build of Qinghai-Tibet Railway（QTR） and others cold region *** this paper,we contrast the awning effect in warm and low-temperature permafrost regions, through combined the awning measures of the QTR,Qinghai-Tibet Highway（QTH） and Qing-Kang Road（Nation Highway 214）（QKR）.The results showed that the awning can fall the embankment soil temperature and increase the artificial permafrost table effectively in low-temperature permafrost *** in warm permafrost region,the artificial permafrost table can not be increase *** effect of awning protected permafrost is more categorical and obvious than the others initiative protected permafrost measures. All of this can ensure the road safety and smoothed.

关键词： Shading Measure(Awning) cold regions Permafrost Permafrost Protected

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Journal of Mountain Science 2010年第2期7卷 146-156页

作者： LIU Weigang REN Jiawen QIN Xiang LIU Jingshi LIU Qiang CUI Xiaoqing WANG Yetang state key laboratory of Cryospheric Sciences Cold andArid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China institute of Tibetan Plateau research Chinese Academy of Sciences Beijing 10085 China

From 8 April to 11 October in 2005, hydrological observation of the Rongbuk Glacier catchment was carried out in the Mr. Qomolangma （Everest） region in the central Himalayas, china. The results demonstrated that due to its large area with glacier lakes at the tongue of the Rongbuk Glacier, a large amount of stream flow was found at night, which indicates the strong storage characteristic of the Rongbuk Glacier catchment. There was a time lag ranging from 8 to 14 hours between daily discharge peaks and maximum melting （maximum temperature）. As melting went on the time lag got shorter. A high correlation was found between the hydrological process and daily temperature during the ablation period. The runoff from April to October was about 80% of the total in the observation period. Compared with the discharge data in 1959, the runoff in 2005 was much more, and the runoff in June, July and August increased by 69%, 35% and 14%, respectively. The rising of temperature is a major factor causing the increase in runoff. The discharges from precipitation and snow and ice melting are separated. The discharge induced by precipitation accounts for about 20% of the total runoff, while snow and ice melting for about 80%.

关键词： Central Himalayas Mt. Qomolangma Rongbuk Glacier Hydrological characteristics

Impact of human activities on soil respiration:A review

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research in cold and arid regions 2009年第4期1卷 287-299页

作者： Fang Zhang,Tao Wang,Xian Xue,Jian Guo state key laboratory of Desert and Desertification,cold and arid regions environmental engineering research institute,Chi-nese Academy of Sciences,lanzhou,Gansu 730000,{12.. Chinese Acad Sci Cold & Arid Reg Environm Engn Res Inst State Key Lab Desert & Desertificat Lanzhou 730000 Gansu Peoples R China

soil respiration is one of the primary fluxes of carbon between soils and the *** is produced by rhizosphere respiration and soil microbial *** respiration is not only affected by environmental factors,but also changes with the hu-man-induced disturbances of ***-use,the measures of land management,the pollution of soil,and so on can affect soil respiration and change the soil *** to some research,the authors summed up their impacts on soil respiration by human activities through land-use changes and land-management measures among agroecosystem,grassland ecosystem,and for-est *** results showed that (1) when adding fertilization to farmland,the soil respiration will increase;(2) fenced land can decrease soil respiration,while soil respiration in the grazed land at a grassland ecosystem will decline with the increasing of grazing intensity;(3) with grassland fertilization;farmland cultivation;fire,fertilization,and cutting of forest,conflicting results were found in the changes of soil *** plant species,site condition,and measurement season can lead to different results on soil respiration.

关键词： human activities soil respiration agroecosystem grassland ecosystem forest ecosystem

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 {12., Chinese Academy of Science,lanzhou 730000,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

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

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

降温速率和粒径对砂土中甲烷水合物形成过程影响研究

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 {12.,CAS,lanzhou,china 73000 2.engineering {12.,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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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

绿洲景观中居民地空间分布特征及其影响因子分析

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生态学报 2003年第10期23卷 2092-2100页

作者：角媛梅肖笃宁马明国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 云南师范大学旅游与地理科学学院昆明650092 中国科学院寒区旱区环境与工程研究所兰州730000

以张掖绿洲居民地为研究对象 ,用景观格局分析软件 FRAGSTATS计算了 5个景观格局指标 ,用GIS计算了形状指数、景观类型空间邻接比例、最邻近指数、最近距离以及居民地的耕作半径 ,借鉴聚落地理学中的居民地分布研究方法 ,分析了居民地... 详细信息

以张掖绿洲居民地为研究对象 ,用景观格局分析软件 FRAGSTATS计算了 5个景观格局指标 ,用GIS计算了形状指数、景观类型空间邻接比例、最邻近指数、最近距离以及居民地的耕作半径 ,借鉴聚落地理学中的居民地分布研究方法 ,分析了居民地的空间格局特征及其影响因子。结果表明 :1耕地是张掖绿洲内的景观基质 ,居民地是绿洲内分布最广、斑块数最多的景观类型 ;居民地的平均斑块面积小、形状简单、聚集度高 ,与耕地的空间邻接长度和数目均最高 ,其空间分布类型存在空间差异 ;2耕地是影响居民地分布格局的重要因子。缓冲区分析方法可以从理论上确定居民地的耕作半径 ,耕作半径与居民地的空间分布类型紧密相关 ;3居民地到渠系的平均最临近距离为 2 1 5m,75.6%的居民地中有渠系穿过 ;4居民地分布受中心城市——张掖市的影响程度极其明显 ,两者呈指数相关 ;5景观格局分析、居民地分布研究方法和 GIS空间分析方法的有效结合 ,可以较好的反映居民地的空间分布特征及其影响因子的相关性 ;6借鉴聚落地理学的最近邻点指数具有明确的生态含义。

关键词：绿洲景观居民地空间格局影响因子张掖