论文部分内容阅读
作为土壤系统分类的基层分类单元,土系的划分必须经过实地调查,重视控制层段和特征土层的设立,并选择合适的分异特性作为分类指标。本文选择样区内不同景观单元中的10个土壤剖面,根据中国土壤系统分类的要求,探讨了样区内土壤诊断层、诊断特性及其在中国土壤系统分类中的归属;并在有关土系认识的基础上,探讨了土系划分的原则、依据和具体划分方法,确立了研究区土壤所具有的特征土层,依据①特征土层的种类、排列、厚度,②土壤质地和③土壤有机质含量这三类指标,把样区土壤划分为10个土系。
As the taxonomic unit of soil system classification, the classification of soil system must be field surveyed, the establishment of control layer and characteristic soil layer should be emphasized, and the appropriate differentiation characteristics should be selected as the classification index. In this paper, 10 soil profiles of different landscape units in the sample area were selected. Based on the requirements of Chinese soil system classification, the diagnostic layers of soil, their diagnostic properties and their classification in soil taxonomy of China were discussed. On the basis of understanding, the principle, basis and method of division of soil system were discussed, and the characteristic soil layer of the soil in the study area was established. According to ①the type, arrangement, thickness of characteristic soil layer, ② soil texture and ③ soil organic matter Content of these three indicators, the sample soil is divided into 10 soil series.