Abstract：Research purposes ： The alpine steppe ecological zone in the Qinghai 一 Tibet plateau along the Qinghai - Tibet railway is in the alpine arid climate zone featured with the simple ecological structure，shorter growing period of the plant, easy degradation of the plant by interference and long process of nature recovery. It is difficult to restore its ecology due to the unique，original and weak features mentioned above. During the railway construction and operation, it is inevitable to carry out excavation and filling construction to produce the engineering wound，resulting in a number of frozen soil engineering and environmental problems, such as the degradation of permafrost, grassland desertification, frost damage of railway subgrade and loss of water and soil. So it is necessary to study the technology for the regional ecological restoration. In this paper, the introduction is given to the research on the appropriate technology for the ecological restoration along the railway for providing the technical support to the restoration work.
Research conclusions ： (1 ) The seed - nutriment - soil sacks technology presented in this paper is available for the ecological restoration of alpine steppe along the railway. (2)The plant species of the Poa ciymophia, Elymus nutans and Elymus sibiricus were used in the tests，getting the good joint effects. The stable phytobiocoenose was form in the second year after the project. The amounts of seed plant of Poa ciymophia，Elymus nutans and Elymus sibiricus were separately 0.5g，4g and 4g. (3) Adding the water - absorbent polymer and organic fertilizer in the planting matrix got obvious effect. (4)The research results could be applied in ecological and geological disaster prevention and control projects for the transportation construction in permafrost regions of the Tibetan plateau.
Ma Tao, Zhou Jinxing, Zhang Xudong, etc. Preliminary Studies on Characteristic of Vegetations Distribution along the Line of Qinghai - Tibetan Railway [ J ]. Research of Soil and Water Conservation，2007 ( 3 )： 150-154.
Jiang Fuqiang，Li Ying, Li Kaichong, etc. Study on Structural Characteristics of Gobi wind Sand Flowin 100 km Wind Area along Lan - Xin Railway [J ] . Journal of The China Railway Society ,2010(3) ：105 -110.
Xue Chunxiao, Jiang Fuqiang，Cheng Jianjun, etc. Research on Sand Preventing Benefit of Retaining - sand - wall in the Hundred Mile Wind Areas along Lanzhou - xinjiang Railway [ J ] . Journal of Glaciology and Geocryology，2011(4) ：859 - 862.
Ding Jingkang, Han Longwu, Li Yongqiang, etc. Engineering Characteristics of Permafrost and Frozen Soil Engineering in Qinghai - Tibet Railway[ J]. Journal of Railway Engineering Society,2005(S) ：327 - 332.
Zhao Xiangqing，Xiong Zhiwen, Han Longwu, Yang Yong ? peng. Control of Destablization Disaster of Typical Cutting Slope in Permafrost Region [ J ]. Journal of Railway Engineering Society，2009 (1) ： 32 -35.
Wei Jianfang. Study of Vegetation Restoration and Revegetation during the Constructing of the Qinghai - Tibet Railway [ J ]. Journal of Glaciology and Geocryology ,2003 (Sl)：195-198.
Xue Chunxiao, Cheng Jianjun, Jiang Fuqiang, etc. The New Ecological Restoration of Technologies and Practices along Permafrost Section [ J ].Railway Engineering,2010(9〉：146 -148.
Dong Shikui, Ma Jinxing, Pu Xiaopeng, etc. Study on the Ecological Adaptability of Introduced Perennial Grasses and the Selection of Combinations in Alpine Region [ J]. Grassland and Turf,2003(5) ：38 -41.
2013, Vol. 30 
版权所有 © 2014 《铁道工程学报》编辑部