河南省土壤系统分类中典型土系简介

Description of Typical Soil Series of Soil Taxonomy in Henan Province

土系是我国土壤系统分类的最基层分类单元;而尽快建立健全覆盖我国各区域的典型土系是我国土壤系统分类的一项急迫工作。重点介绍河南省的土系建立情况,在222个典型单个土体的野外调查和实验测定数据基础上,依据《中国土壤系统分类检索(第三版)》和《中国土壤系统分类土族和土系划分标准》,共划分了5个土纲,11个亚纲,22个土类和39个亚类,建立了187个土系,并以农业耕作区的21个典型土系为例,介绍了河南省土系建立情况。

Soil series is the most basic category of soil taxonomy. Establishment and improvement of typical soil series have become the research hotspot in the field of soil taxonomy. This research introduced the establishment of soil series in Henan Province, Based on 222 typical pedons from field survey and lab analysis, they were classified into 5soil orders, 11 suborders, 21 soil groups, 37 subgroups and 187 soil series according to Retrieval System of Chinese Soil Taxonomy(the third edition) and Chinese classification standards of soil family and soil series, The establishment of soil series was briefly introduced according to the 22 typical soil series in the farmland area of Henan Province.