MINERAL MAGNETIC-PROPERTIES OF ACID GLEYED SOILS UNDER OAK AND CORSICAN PINE

被引：46

作者：

DEARING, JA

LEES, JA

WHITE, C

机构：

[1] School of Natural and Environmental Sciences, Coventry University, Coventry, CV1 5FB, Priory Street

来源：

GEODERMA | 1995年 / 68卷 / 04期

关键词：

D O I：

10.1016/0016-7061(95)00040-1

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

A comparison is made of the magnetic properties of acid gleyed soils under two woodland stands, oak (Quercus robur) and Corsican Pine (Pinus laricio). Twenty-five soil profiles under each type were sampled and analysed in three layers within designated horizons. The results show that in the surface (organic) horizon the main magnetic component is probably derived from fly-ash, and that the concentration is up to 4 times higher under pine. This is attributed to a combination of more efficient scavenging properties of conifers and relatively low rates of organic turnover. In subsurface horizons the magnetic properties indicate that the higher acidity under pine has resulted in reduced concentrations of ferrimagnetic and antiferromagnetic iron oxides. These significant changes in min eralogy have taken place in 50-60 years.

引用

页码：309 / 319

页数：11

共 28 条

[1]

BATTARBEE RW, 1988, LAKE ACIDIFICATION U, P68

[2] THE OCCURRENCE OF LEPIDOCROCITE IN SOME BRITISH SOILS [J].