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Anomaly feature of seasonal frozen soil variationson the Qinghai-Tibet Plateau

Journal of Geographical sciences 2002年第1期12卷 99-107页

作者： WANG Cheng-hai1,2. DONG Wen-jie3, WEI Zhi-gang2.(1. College of Resource and environmental Science, lanzhou University,{2., china 2. cold and arid regions environmental and engineering research institute, CAS,{2., china 3. Insti College of Resource and environmental Science Lanzhou University Lanzhou 730000 cold and arid {2. environmental and engineering research institute CAS Lanzhou 730000 institute of Atmospheric Physics CAS 北京 Beijing

The seasonal frozen soil on the Qinghai-Tibet Plateau has strong response to climate change, and its freezing-thawing process also affects East Asia climate. In this paper, the freezing soil maximum depth of 46 stations covering 1961–1999 on the plateau is analyzed by rotated experience orthogonal function (REOF). The results show that there are four main frozen anomaly regions on the plateau, i.e., the northeastern, southeastern and southern parts of the plateau and Qaidam Basin. The freezing soil depths of the annual anomaly regions in the above representative stations show that there are different changing trends. The main trend, except for the Qaidam Basin, has been decreasing since the 1980s, a sign of the climate warming. Compared with the 1980s, on the average, the maximum soil depth decreased by about 0.02.m, 0.05 m and 0.14 m in the northeastern, southeastern and southern parts of the plateau, but increased by about 0.57 m in the Qaidam Basin during the 1990s. It means there are different responses to climate system in the above areas. The spectrum analysis reveals different change cycles: in higher frequency there is an about 2.year long cycle in Qaidam Basin and southern part of the plateau in the four representative areas whereas in lower frequency there is an about 14-year long cycle in all the four representative areas due to the combined influence of different soil textures and solutes in four areas.

关键词： Qinghai-Tibet Plateau seasonal frozen soil rotated empirical orthogonal function analysis anomaly areas

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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,{2., lanzhou 73000, china 2.state key laboratory of frozen soil engineering, cold and arid regions environmental and engineering research institute,{2., lanzhou 73000, china

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Physico-chemical Characteristics and environmental Significance of Snow Deposition on Haxilegen Glacier No.51 in Tian Shan,china

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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 {2. 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,{2.,during July-September 2.04 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

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Application and Effect Analysis of the Awning Measure on cold regions

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

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第八届国际冻土工程会议

作者： Wenjie Feng Zhi Wen Zhizhong Sun Junjie Wu (state key {2. of frozen soil engineering cold and arid regions environmental and engineering research {12. chinese academy of sciences Gansu lanzhou Donggang West Road 32.# 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 {2., through combined the awning measures of the QTR,Qinghai-Tibet Highway（QTH） and Qing-Kang Road（Nation Highway 2.4）（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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Impact of human activities on soil respiration:A review

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research in cold and {2. regions 2009年第4期1卷 287-299页

作者： Fang Zhang,Tao Wang,Xian Xue,Jian Guo state key {2. of Desert and Desertification,cold and arid regions environmental engineering research institute,Chi-nese academy of sciences,{12.,Gansu 730000,china. 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

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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.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.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.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.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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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 {2. 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 2. 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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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 {2. 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

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The Glacier Area Changes in the Qangtang Plateau Based on the Multi-temporal Grid Method and its Sensitivity to Climate Change

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Journal of Mountain Science 2011年第6期8卷 882-893页

作者： WANG Liping XIE Zichu WANG Xin LIU Shiyin DING Liangfu SHANGGUAN Donghui The College of Resources and environmental Science Hunan Normal University Changsha China cold and arid {2. environmental and engineering research institute Chinese Academy of Sciences Lanzhou China Department of Geography Hunan University of Science and Technology Xiangtan China

Glacier area changes in the Qangtang Plateau are analyzed during 1970-2.00 using air photos,relevant photogrammetric maps and satellite images based on the multi-temporal grid *** results indicate that the melting of glaciers accelerated,only a few of glaciers in an advancing state during 1970-2.00 in the whole Qangtang ***,the glaciers seemed still more stable in the study area than in most areas of western *** estimate that glacier retreat was likely due to air temperature warming during 1970-2.00 in the Qangtang ***,the functional model of glacier system is applied to study climate sensitivity of glacier area changes,which indicates that glacier lifespan mainly depends on the heating rate,secondly the precipitation,and precipitation increasing can slow down glacier retreat and make glacier lifespan prolonged.

关键词： The Qangtang Plateau Glacier change Multi-temporal Climate change Functional model ofglacier system Simulation

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Reliability and Validity Test of Questionnaire on the Adaptation Strategy of Cryosphere Changes in arid Inland River Basin

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Meteorological and environmental research 2011年第4期2卷 1-4,8页

作者： WANG Ying-wei1, LIU Shou-dong1, DENG Mao-zhi2.3 1. School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 2.0044, china 2. cold and arid regions environmental and engineering research institute,{2., lanzhou 730000, china 3. state key laboratory of Cryospheric sciences,{2., lanzhou 730000, china

[Objective] The aim was to test the reliability and validity of questionnaire on the adaptation strategy of cryosphere changes in arid inland river basin. [Method] A questionnaire on 'the adaptation strategy of cryosphere changes in arid inland river basin' was carried out in Urumchi River basin and Aksu River basin, and its reliability and validity were tested by means of statistical method, so as to investigate the stability and accuracy of questionnaire. [Result] Reliability analysis of questionnaire showed that the split-half reliability coefficient of questionnaire in Urumchi River basin and Aksu River basin was 0.72. and 0.750, respectively, and Cronbach’s α reliability coefficient was 0.613 and 0.616, respectively, which revealed that the questionnaire had good equivalence and internal consistency which reflected good reliability and stability. According to validity analysis on questionnaire, there was significant correlation between the score of most questions and questionnaire, and it indicated that questionnaire had high content validity. There were 8 common factors collected from 2. questions, which were summarized as agricultural planting, agricultural water conservation, life satisfaction, cultivated land variation, social integration sense, climate and cryosphere changes, capital input improved by environment and family economic condition, respectively. Meanwhile, the contribution rate of various questions in corresponding indexes was higher, and reflected structure was in full accord with questionnaire content, which revealed that questionnaire owned good construct validity. [Conclusion] With higher stability and accuracy, the questionnaire could determine the desired topic and content and was suitable for the study on the perception of common people and choices of adaptive strategy under cryosphere changes in arid inland river basin in northwestern china.

关键词： Cryosphere changes Adaptive strategy Questionnaire Reliability and validity test china

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