[article]
| Titre : |
Effects on soils of an oak invasion of a Calluna heath, Denmark, II. Changes in organic matter and cellulose decomposition |
| Type de document : |
texte imprimé |
| Auteurs : |
Knud Erik Nielsen, Auteur ; Kristian Dalsgaard, Auteur ; Per Nørnberg, Auteur |
| Année de publication : |
1987 |
| Article en page(s) : |
pp. 97-106 |
| Langues : |
Anglais (eng) |
| Catégories : |
[ZG] Danemark
[habitats/milieux] 31 - Landes et fruticées
[Thèmes] Relation sol - végétation
|
| Mots-clés : |
changement de végétation |
| Résumé : |
"The investigation had two parts. In the first, organic matter was extracted from samples of the O through Bh horizons of seven profiles and then split into humic and fulvic acids. Part of the fulvic acid was treated with polyvinyl-pyrrolidone. In the other part, strips of cotton cloth were placed into the soils for two months, removed and tested for tensile strength to measure their decomposition.
The amounts of humic and fulvic acids were both greater under Calluna than under the oaks. Profile distribution was also sharply contrasted under Calluna, being very low in the O horizons and high in the B horizons. Distribution was virtually uniform under the oak. The adsorption of fulvic acids by polyvinyl-pyrrolidone and the decomposition of the cotton strips indicated greater biological activity under the oaks than in the heath. These several differences are attributed to the replacement of one type of vegetation by another." (source : auteurs) |
| Type de publication : |
périodique |
| Référence biblio : |
Nielsen K., Dalsgaard K., Nørnberg P., 1987 - Effects on soils of an oak invasion of a Calluna heath, Denmark, II. Changes in organic matter and cellulose decomposition. Geoderma, 41 : 97-106. |
| ID PMB : |
70408 |
| Permalink : |
http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=70408 |
in Geoderma > vol. 41, n°1-2 (Année 1987) . - pp. 97-106
[article]
|
Effects on soils of an oak invasion of a Calluna heath, Denmark, II. Changes in organic matter and cellulose decomposition in Geoderma, vol. 41, n°1-2 (Année 1987)