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北京地处黄土降尘区域,现代仍接受着大量的黄土降尘。通过北京山地不同基岩上发育土壤性质的比较发现:由于受黄土的影响,这些土壤的颗粒组成大都以粉粒为主,土体有石灰反应,pH呈微碱性,盐基饱和,与黄土的基本特性相似。证明了黄土降尘作为母质的来源之一,参与了土壤的成土过程,并对土壤性质产生了重要的影响。研究认为,在黄土降尘覆盖区,研究山地土壤,成土母质不应仅考虑下伏基岩,还应该将黄土降尘作为重要的母质因素,考虑这种动态的黄土母质对土壤形成过程和性质的影响。
Beijing is located in dust loess area, the modern still accept a large amount of loess dust. The comparison of soil properties developed on different bedrock in Beijing mountain shows that due to the influence of loess, most of the soil particles are mainly of silt, the soil has lime reaction, the pH is slightly alkaline, the salt base is saturated, and the loess The basic characteristics are similar. It is proved that dust loosening of the loess is one of the sources of the parent material and is involved in the soil forming process and has an important effect on the soil properties. The study suggests that the study of mountain soil and parent material should not only consider the underlying bedrock, but also take the dust reduction of loess as an important parent material in the dust cover of the loess area. Considering the dynamic process of the loess parent material on the formation process and properties of the soil influences.