| Autor: |
Tamminen, Pekka, Starr, Michael |
| Jazyk: |
angličtina |
| Rok vydání: |
1994 |
| Předmět: |
|
| Zdroj: |
Silva Fennica, Vol 28, Iss 1 (1994) |
| Druh dokumentu: |
article |
| ISSN: |
2242-4075 |
| DOI: |
10.14214/sf.a9162 |
| Popis: |
Relationships between bulk density and organic matter (OM) content, textural properties and depth are described for forested mineral soils from Central and Northern Finland. Core samples were taken of 0â5, 30â35 and 60â65 cm layers at 75 plots. Three measures of bulk density were calculated: the bulk density of the < 20 mm fraction (BD), the bulk density of the < 2 mm fraction (BD), and laboratory bulk density (BD). BD was determined from the mass of a fixed volume of < 2 mm soil taken in the laboratory. All three measures of bulk densities were strongly correlated with organic matter content (r ⥠-0.63). Depth and gravel (2â20 mm) content (in the case of BD) were also important variables. BD was sensitive to clay contents > 7% but did significantly improve the prediction of both BD and BD in coarse soils (clay contents ⤠7%). Predictive models were derived for coarse soils.202ll2l220 |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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