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对青藏铁路所经之地—青藏高原腹地—典型干旱区的地区来说,水分是植被恢复成败的关键影响因子。通过对青藏铁路沿线的水文条件特征及其对植被生长产生影响进行分析研究,得出铁路沿线年均降水量总体上是随着海拔增高而增加,而由于昆仑山和唐古拉山的阻隔作用,使得沿线年均降雨量呈现明显的3个等级;地表水分为格尔木河内陆水系、长江水系、扎加藏布内陆水系、怒江水系和雅鲁藏布江水系5个水系;地下水由于多年冻土的存在而分为3大地段。对沿线不同水文条件地段植被恢复提出几种建议,以期能为青藏铁路沿线植被恢复提供参考。
For the areas where the Qinghai-Tibet Railway passes - the hinterland of the Qinghai-Tibet Plateau - a typical arid region, water is the key factor for the success or failure of vegetation restoration. By analyzing the characteristics of the hydrological conditions along the Qinghai-Tibet Railway and its impact on the vegetation growth, it is concluded that the average annual precipitation along the railway line generally increases with the elevation above sea level. Due to the barrier effect between the Kunlun Mountains and the Tanggula Mountains, The average annual rainfall along the line shows obvious three grades; the surface water includes five water systems: the Inland Water System of Golmud River, the Yangtze River System, the Zhajiazbubu Inland Water System, the Nu River System and the Brahmaputra River System; the groundwater is divided into 3 large lots. Several suggestions are put forward for vegetation restoration along different hydrological conditions in order to provide reference for the vegetation restoration along the Qinghai-Tibet Railway.