at Google ScholarTitle data
Matschonat, Gunda ; Vogt, Robert:
Equilibrium solution composition and exchange properties of disturbed and undisturbed soil samples from an acid forest soil.
In: Plant and Soil.
Vol. 183
(1996)
.
- pp. 171-179.
ISSN 1573-5036
DOI: https://doi.org/10.1007/BF00011432
Abstract in another language
Microscalic heterogeneity of soil chemical properties caused by soil structure has been reported for several soils.We investigated exchange properties and soil solution composition of disturbed and undisturbed samples of anacid forest soil lacking visible structure. Cation concentrations in the soil solution resulting from two extractionprocedures and two analytical methods were compared. The effective cation exchange capacity (CECe) of theundisturbed sample represented 56~59% of the bulk soil CECe. Base saturation of undisturbed samples equalledthat of disturbed samples for EA, Bhs, and Bsh horizons, and was higher for the Bw horizon. Contradicting theresults of other authors, soil pore solution obtained by percolating soil cores under conditions of low water tensionoffered more favourable conditions for plant roots when compared to the equilibrium soil solution of the bulk soilsample in all except the Bsh horizon. CaZ+/A13+ molar ratios were higher and fractions of H + + AI 3+ on totalcationic charge were lower in the soil pore solution. These results were obtained employing soil:solution ratios ofabout 1:0.5 during the extraction of soil pore solution, and by determination of free cations. Other authors used awater extraction with soil:solution ratios up to 1:2 and took total metal for ion concentrations. The combinationof the latter extraction and analytical method in our study, too, led to unfavourable CaZ+/Al 3+ ratios and highfractions of H + + AI 3+. The choice of analytical and extraction method are thus decisive for the valuation of thesoil solution composition in view of plant nutrition.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Additional notes: | BAYCEER6897 |
| Institutions of the University: | Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology Research Institutions > Central research institutes > Bayreuth Center of Ecology and Environmental Research- BayCEER Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences Research Institutions Research Institutions > Central research institutes |
| Result of work at the UBT: | Yes |
| DDC Subjects: | 500 Science |
| Date Deposited: | 22 Oct 2015 07:29 |
| Last Modified: | 28 Oct 2024 09:53 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/20758 |