关于“中国土壤系统分类中基层分类研究”的思路

Some ideas for the basic categories of soil classification in soil taxonomy of China

中国土壤系统分类中的基层分类研究的重点是通过选择分异特性和恰当地划分分异特性区间来建立分类指标体系 .分异特性应是易于鉴别的对土壤生产力有重要影响的相对稳定的土壤性质 ;以使土壤分类便于应用于土壤调查 ,更好地服务于土地评价和规划 .研究变量和因变量的定量化关系或土壤性质与土地生产力的定量化关系是准确划分分异特性区间的有效方法 .基层分类最好采用检索方法 ,以求分类的唯一性 .

Study on the basic categorizing of soil classification in Chinese soil taxonomy should be focussed mainly on the selection of specific characters as well as proper dividing of the range of differentiation characters in order to establish classification indexes. Differentiation characters should be the stable soil properties, which can be recognized easily and are important for soil productivity in terms of better serving for soil survey, evaluation and division. It is an efficient method to study the quantitative relationship between soil properties and land productivity. It is also necessary to use indexing way in basic classification for having an unique classification. Serial nomenclature can represent clearly the nature of soil classification.