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西藏高山土壤性质的研究,过去侧重于土壤的理化性质和粘粒矿物组成。从土壤复合胶体特性来阐明高山土壤的发生分类还是初次。供试土壤选自西藏的高山草甸土(草毡土)、亚高山草甸土(黑毡土)、高山草原土(莎嘎土)、亚高山草原土(巴嘎土)、高山荒漠土(寒漠土)及亚高山荒漠土(冷漠土)共六种土壤的腐殖质层。高山土壤的有机质含量相差较大,草甸土最高(4—9％),草原土次之(2—3％),荒漠土最低(0.5—1.0％),一般是高山带下部的土壤略高于高山带上部的土壤。高山土壤的有机无机复合度在65—92之间,以荒漠土最高,草原土最低,草甸土居
In the past, the study of the soil properties in the mountains of Tibet has focused on the physical and chemical properties of soils and the clay mineral composition. From the characteristics of soil compound colloids to clarify the occurrence of alpine soil classification is still the first time. The test soil was selected from alpine meadow soil (grass felt soil), sub-alpine meadow soil (black felt soil), alpine grassland soil (Shagat soil), subalpine steppe soil (Baga soil), alpine desert soil (Cold desert soil) and subalpine desert soil (cold desert soil) a total of six soil humus layer. The contents of organic matter in alpine soils are quite different, the highest in meadow soils (4-9%), the less in prairie soil (2-3%) and the lowest in desert soils (0.5-1.0%), which is generally slightly higher in the lower part of the alpine belt The upper part of the mountain with the soil. Alpine soil organic-inorganic compound between 65-92, with the highest desert soil, the lowest prairie soil, meadow soil