太白山北坡垂直带土壤发生特性与分类──腐棕土

Soil Genesis Characteristics and Classification of Vertical Zone on the Northern Slope of the Taibei Moutains

太白山北坡亚高山寒带湿润气候、草甸植被下发育的土壤是土壤垂直带谱中非常重要的组成部分。研究结果表明：此带土壤腐殖质特性明显，淋溶强烈，呈酸性；剖面发育较差，风化度低，粘化作用微弱，具硅铝特性；氧化铁的游离度低，活化度高，潜在移动性大。该带土壤属于系统分类中的腐棕土土类，其中发育在亚高山灌丛草甸的为普通腐棕土，发育在亚高山禾草草甸的为不饱和腐棕土。

The soil developed on the subalpine frigid.in the northern slope of the Taibei Mountains with humid climate and meadow vegetation is a very important component in the soil association of vertical zone. The results show that the zone in the zone has the characteristics of an evident humic property, intense leaching and acid reaction; less developed soil profile, low weathering intensity, weak clayization and the siallic property; low Fed/Fet, high Feo/Fed, and great potential moving property. The soils belong to the humus brownified soil group in soil texonomic classification. Of which the soil (TN-03) developed in the region with the subalpine shrubby meadow is the haplic humus brownified soil subgroup. And the soil (TN-04) developed in the region with the subapine grass meadow is the dystric humus brownified soil subgroup.