紫色土系统分类研究

STUDY ON PURPLE SOIL TAXONOMY

以参考文献[1]为指南,研究和鉴比了川鄂湘赣浙滇等省约70个紫色土剖面的属性特征,进行了紫色土系统分类和从土纲至亚类的连续命名.结果是,它们分别归属新成土纲中的紫色正常新成土和雏形土纲中的紫色湿润雏形土等2个土类、9个亚类.最后就土纲、亚纲、土类、亚类进行了检索.

Taking 'Chinese Soil Taxonomy '(Revised Proposal) as guide, 70 purple soil profiles in Sichuan , Hubei, Hunan , Jiangxi, Zhejiang and Yunnan Provinces were studied and compared. The results showed that purple soils generally are of obvious and stable lithologic characters of purplish sandstones and shales. Besides,a few purple soils have cambic horizon ,agric horizon and redoxic features in profile,and should be classified to cambisols order. By using the continuous nomenclature, the purple soils in cambisols order and entisols order were respectivcly named pup-udic cambisols and pup-orthic entisols,which divided into 9 subgrounps.