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采取综合分析与主导因素相结合的原则,阐明了青藏高原各大地貌单元的大气环流及自然景观特征,描述了高原多年冻土形成和分布格局.基于综合地域分异规律,以年降水量和干燥度(蒸发/降水)作为主要指标,并参考年平均气温、气温年较差及年平均空气湿度等,结合地形因素将高原多年冻土划分为:湿润型、亚湿润型、半干旱型、干旱型和极干旱型五种类型,并对各类多年冻土的代表性地区的冻土特征分别进行论述.该分类方法适合于小比例尺的冻土测绘和制图.
Based on the principle of combining the comprehensive analysis with the dominant factors, the atmospheric circulation and the natural landscape characteristics of the major geomorphic units of the Qinghai-Tibet Plateau are expounded, and the formation and distribution pattern of the permafrost on the plateau are described. Based on the integrated regional differentiation, Dryness (evaporation / precipitation) is taken as the main index. According to the annual average temperature, the annual temperature difference and the annual average air humidity, the permafrost in the plateau is divided into wet type, sub-humid type, semi-arid type, Arid type and arid type, respectively, and the characteristics of permafrost in representative areas of various types of permafrost are discussed respectively.The classification method is suitable for small scale mapping and mapping of frozen soil.