紫色水耕人为土系统分类

PURPLE STAGNIC ANTHROSOLS TAXONOMY

总结了由紫色沉积岩(紫色土)发育成的紫色水耕人为土的属性特点.在对照参考文献[2]的基础上,拟订了紫色水耕人为土的诊断层和诊断特性,建立了土纲至亚类高级单元的分类体系及相应的检索系统.

Purple stagnic anthrosols have general characters of stagnic anthrosols, and some unique characters as follows; 1. Purple stagnic anthrosols have a slight development in profile. 2. The differentiation of iron oxides is controlled by eluviation-illuviation of iron oxides and local differentiation of iron oxides. 3. Gleyic stagnic anthrosols have weak gleyic features.On the basis of 'Chinese Soil Taxonomy' (Revised Proposal), anthrostagnic epipedon (anthrostagnic evidence)and hydragic horizon (hydragic evidence)were drawed as diagnostic horizon,as well as anthrostagnic moisture regime and gleyic evidence were considered as diagnostic characteristics. A system of classification and key from order to subgroup was completed with a continuous nomenclature. Purple stagnic anthrosols were divided into 5 subgroups as follows; para-developing-hap-stagnic anthrosols, gen-hap-stagnic anthrosols, fel-hap-stagnic anthrosols, fec-hap-stagnic anthrosols and typ-hap-stagnic anthrosols.