Landscape determinants of exchangeable calcium and magnesium in Ozark Highland forest soils
- Download PDF (892910)
- This publication is available only online.
Soil Science Society of America Journal. 75: 164-180.
Exchangeable base cations, particularly Ca and Mg, largely govern soil acidity and, consequently, plant species composition in temperate forests. Although studies have identified soil and terrain characteristics affecting exchangeable Ca and Mg, few studies have identified the relative importance of factors affecting Ca and Mg distribution across landscapes. Objectives of this study were to: (i) identify the relative importance of geomorphic and soil properties for exchangeable Ca and Mg concentrations and quantities, and (ii) examine relationships between these properties and tree species abundance. A classification and regression tree (CART) analysis was applied to 74 pedons sampled across a 3800-ha forested research area in the Ozark Highlands in southeastern Missouri.
Kabrick, John M.; Goyne, Keith W.; Fan, Zhaofei; Meinert, Dennis. 2011. Landscape determinants of exchangeable calcium and magnesium in Ozark Highland forest soils. Soil Science Society of America Journal. 75: 164-180. https://doi.org/10.2136/sssaj2009.0382.