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| Format: | Artículo científico |
| Langue: | en |
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Universidade Federal de Viçosa
2016
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| Accès en ligne: | https://www.redalyc.org/articulo.oa?id=48849820009 |
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Table des matières:
- NUTRIENT RETURN THROUGH LITTERFALL IN A Eucalyptus dunnii Maiden STAND IN SANDY SOIL Aline Aparecida Ludvichak Mauro Valdir Schumacher Grasiele Dick Dione Richer Momolli Huan Pablo de Souza Claudiney do Couto Guimarães Agrociencias Pampa biome Forest nutrition Nutrient cycling In a forest stand, litterfall is primarily responsible for the retention and return of nutrients to the soil. The objective of this study was to evaluate the return of nutrients through litterfall in a stand of Eucalyptus dunnii in a Pampa biome. For quantification of litterfall, four 420-m² installments were marked; within each one, four 0.50-m² collection plots were distributed. For the collection of thick branches, four 7.00-m² subplots were staked out. The collected litterfall was separated into leaf, twig, thick branch, and miscellany fractions for subsequent chemical analysis. The total litterfall measured was 6.99 Mg ha-1 yr-1, and comprised 61.57% leaves, 17.34% twigs, 13.83% thick branches, and 7.26% miscellany. The total amount of macronutrients in the litterfall was 160.22 kg ha-1 yr-1, and the macronutrient transfer order was the same for the leaf, twig, and thick branch fractions (Ca > N > K > Mg > S > P). The total quantity of micronutrients was 7.55 kg ha-1 yr-1, and the transfer order was Mn > Fe > B > Zn > Cu. Maintaining litterfall on the site, especially in degraded or low fertility soils like in the Pampa biome, may contribute to possible improvements in soil characteristics. 2016 artículo científico 0100-6762 https://www.redalyc.org/articulo.oa?id=48849820009 en http://www.redalyc.org/revista.oa?id=488 Revista Árvore application/pdf Universidade Federal de Viçosa Revista Árvore (Brasil) Num.6 Vol.40