湘中南丘岗地区土壤发生特性及系统分类  

Genetic characteristics and taxonomy of soils in hilly regions of central-south Hunan province

作　　者：刘杰[1,2] 张杨珠[2] 罗尊长[1] 曾希柏[3] 

机构地区：[1]湖南省土壤肥料研究所,湖南长沙410125 [2]湖南农业大学资源环境学院,湖南长沙410128 [3]中国农业科学院农业环境与可持续发展研究所,北京100081

出　　处：《湖南农业大学学报（自然科学版）》2012年第6期648-655,共8页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：国家科技支撑计划项目(2012BAD05B05);公益性行业(农业)科研专项(201003059)

摘　　要：选取湖南省中南部丘岗地区11个土壤剖面,研究其土壤成土环境和形成特点。结果表明,该区土壤质地以黏土为主,土壤黏粒淋溶明显,黏化过程较强,各剖面表现出铁游离度高、活化度低的特点,处于中度富铁化过程。根据《中国土壤系统分类检索(第三版)》,鉴定了诊断层和诊断特性,确定了供试土壤剖面在中国土壤系统分类中的归属,其中原发生分类中的红壤(04、22、23号剖面)属普通强育湿润富铁土;红壤(07、13号剖面)属网纹简育湿润富铁土;菜园土(19号剖面)属斑纹肥熟旱耕人为土;紫色土(20号剖面)属酸性紫色正常新成土;粗骨土(21号剖面)属普通湿润正常新成土;石灰土(01号剖面)属普通钙质湿润雏形土;紫色土(16、17号剖面)属斑纹紫色湿润雏形土。This paper deals mainly with soil-forming factors and characteristics of soil in hilly regions of central-south Hunan province through investigating eleven soil profiles. The results showed that the main soil texture was clay, which showed obvious leaching phenomenon and strong viscidity. The soil profiles were characterized by high degree of iron segregation and low activity of iron oxides, which were in the process of moderate iron-accumulation. According to the ＂Chinese Soil Taxonomy Index （the third edition）＂, diagnostic horizons and diagnostic characteristics were characterized and the attribution of these soil profiles in soil taxonomic classification was determined. Soil profiles 04, 22 and 23 belong to red soil in soil genetic classification and Typic Hiweatheri-Udic Ferrosols in soil taxonomy, soil profiles 07 and 13 belong to red soil in soil genetic classification and Plinthic-Hapli-Udic Ferrosols in soil taxonomy, soil profile 19 belongs to garden soil in soil genetic classification and Mottlic Fimi-Orthic Anthrosols in soil taxonomy, soil profile 20 belongs to purple soil in soil genetic classification and Dystric Purpli-Orthic Primosols in soil taxonomy, soil profile 21 belongs to Regosols in soil genetic classification and Typic Udi-Orthic Primosols in soil taxonomy, soil profile 01 belongs to limestone soil in soil genetic classification and Typic Carbonati-Udic Cambosols in soil taxonomy, and soil profiles 16 and 17 belong to purple soil in soil genetic classification and Mottlic Purpli-Udic Cambosols in soil taxonomy.

关 键 词：湘中南 丘岗地区 发生特性 系统分类 祁阳 长沙 

分 类 号：S158.3[农业科学—土壤学] S155.3[农业科学—农业基础科学]