Changes in permafrost environments caused by construction and maintenance of Qinghai-Tibet Highway

Abstract：The sideward permafrost along the Qinghai-Tibet Highway (QTH) contains massive ground-ice and is at a relatively high temperature.Under the influence of the steady increase of human activities,the permafrost environment has been changed greatly for a long time.At present,the permafrost becomes warm and rapidly degenerates,including the decline of the permafrost table,rising of the ground temperature,shortening of the length of frozen section,and extension of range of melting region.Some thaw hazards (e.g.thaw slumping and thermokarst pond) have widely occurred along both sides of the roadbed.In addition,due to the incomplete construction management,the vegetation adjacent to the highway is seriously damaged or eradicated,resulting in the land desertification and ecosystem out of balance.The dust,waste and garbage brought by drivers,passengers,maintenance workers,and transportations may also pollute the permafrost environment. 作者： Author： LIN Zhan-ju  NIU Fu-jun  LUO Jing  LU Jia-hao  LIU Hua 作者單位： State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences, Lanzhou 730000, China 期 刊： 中南大學學報（英文版）   EISCI Journal： Journal of Central South University of Technology(English Edition) 年，卷(期)： 2011, (5) 分類號： U416.168 Keywords： permafrost environment    Qinghai-Tibet Highway    thermokarst pond    thaw slumping    permafrost degradation    機標分類號： TU7 X82 機標關鍵詞： maintenance    construction management    land desertification    ground temperature    permafrost table    human activities    frozen section    vegetation    influence    ecosystem    range of    addition    massive    long    high 基金項目： Changes in permafrost environments caused by construction and maintenance of Qinghai-Tibet Highway[期刊論文]  中南大學學報（英文版） --2011, (5)The sideward permafrost along the Qinghai-Tibet Highway (QTH) contains massive ground-ice and is at a relatively high temperature.Under the influence of the steady increase of human activities,the perm...

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