Use of the electromagnetic-induction meter (EM38) as a tool in managing salinisation

被引：7

作者：

McKenzie R.C. ^{[1
]}

George R.J. ^{[2
]}

Woods S.A. ^{[1
]}

Cannon M.E. ^{[3
]}

Bennett D.L. ^{[2
]}

机构：

[1] Alberta Agric. Food/Rural Devmt., Brooks

[2] Agriculture Western Australia, Bunbury

[3] University of Calgary, Department of Geomatics Engineering, Calgary

来源：

Hydrogeology Journal | 1997年 / 5卷 / 1期

关键词：

D O I：

10.1007/s100400050110

中图分类号：

学科分类号：

摘要：

Utilisation of an EM38 electromagnetic-induction meter is a cost-effective method for assessing field salinity and for experiments on the salt tolerance of crops. The EM38 meter can be used to map the distribution and severity of salinity. The instrument must be calibrated for temperature, moisture, texture, and other soil factors, such as the presence of magnetic minerals. The meter can be carried by an operator and readings recorded manually; it can be towed behind an all-terrain vehicle to map in a preset grid; or it can be used randomly with a Global Positioning System and data-logging equipment to map large areas. In field experiments in Alberta, Canada, the EM38 was used to help assess salt tolerance of 28 species of trees and 28 species of forage and turf grasses. In similar experiments in Western Australia, the usefulness of the EM38 meter was evaluated in helping to predict survival and growth of Eucalyptus globulus and pastures in saline soils. These techniques are now being incorporated into salinity-management strategies.

引用

页码：37 / 50

页数：13

共 27 条

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