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本文旨在通过土壤普查试点的工作实践,按大比例尺土壤调查制图对土壤分类的要求,着重对通县分布面积最大的冲积平原潮土基层分类中土种一级的划分作一些探讨,高级分类单元在此不作讨论。 一、潮土基层分类的原则与依据 土壤是客观存在的历史自然体。土壤分类应当反映土壤发生发展的基本规律,必需体现同级土壤类型的属性在横向关系上的一致性,以及各级分类单元在纵向关系上发生学上的联系。 土壤是在一定的成土因素综合影响下形成的产物。任何土壤都离不开特定的环境条件而存在。由于各地自然条件和社会经济条件有所不同,土壤形成过程和所表现的基本属性(包括形态)也因地因时而异。因此,土壤分类应以土壤形成的客观条件(包括
The purpose of this paper is to discuss the requirement of soil classification by large-scale soil survey and mapping through the work practice of soil census pilot project, and to make some discussion on the division of soil-first-class soil layer classification in alluvial plain alluvial plain with the largest distribution area in Tongxian County. The unit is not discussed here. First, the principle and basis of the grass-roots classification Soil is an objective historical natural body. Soil classification should reflect the basic law of soil development, must reflect the same level soil properties in the horizontal relationship of the consistency, as well as the taxonomic units at all levels in the vertical relationship between the occurrence of the relationship. Soil is a product formed under the combined effect of certain soil-forming factors. Any soil is inseparable from the specific environmental conditions exist. Because of the differences in natural conditions and socio-economic conditions, the process of soil formation and the basic attributes (including morphology) of the soil are also time-varying. Therefore, soil classification should be based on the objective conditions of soil formation (including