دورية أكاديمية
FOREST LITTER DECOMPOSITION AS AFFECTED BY EUCALYPTUS STAND AGE AND TOPOGRAPHY IN SOUTH-EASTERN BRAZIL1
| العنوان: | FOREST LITTER DECOMPOSITION AS AFFECTED BY EUCALYPTUS STAND AGE AND TOPOGRAPHY IN SOUTH-EASTERN BRAZIL1 |
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| المؤلفون: | Alba Lucia Araujo Skorupa, Nairam Félix de Barros, Júlio César Lima Neves |
| المصدر: | Revista Árvore, Vol 39, Iss 6, Pp 1055-1064 (2015) |
| بيانات النشر: | Sociedade de Investigações Florestais, 2015. |
| سنة النشر: | 2015 |
| المجموعة: | LCC:Forestry |
| مصطلحات موضوعية: | Respiração do solo, Sacos de decomposição, Emissão de CO2, Forestry, SD1-669.5 |
| الوصف: | Forest litter decomposition is a major process in returning nutrients to soils and thus promoting wood productivity in the humid tropic. This study aimed to assess decomposition of eucalypt litter in the Rio Doce region, Brazil. Leaf litter was sampled under clonal eucalypt stands aged 2, 4 and 6 years on hillslopes and footslopes. Soil and soil+litter samples were incubated at two levels of soil moisture, temperature and fertilization. C-CO2 emissions from soil measured during 106 days were higher at 32 °C than at 23°C, mainly for the 2-yr-old stand on footslope. When leaf litter was added on soils, C-CO2 emissions were eight times higher, mainly on footslopes, with no effect of stand age. Leaf decomposition in situ, assessed with a litterbag experiment showed a mean weight loss of at least 50% during 365 days, reaching 74% for 2 yr-old stands on footslopes. In comparison with data from the native forest and the literature, no apparent restrictions were found in eucalypt litter decomposition. Differences between in vitro and in situ results, and between eucalypt and native forest, were most likely related to the response of diverse decomposer communities and to substrate quality. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English Spanish; Castilian Portuguese |
| تدمد: | 1806-9088 0100-6762 |
| Relation: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-67622015000601055&lng=en&tlng=en; https://doaj.org/toc/1806-9088 |
| DOI: | 10.1590/0100-67622015000600008 |
| URL الوصول: | https://doaj.org/article/c4c0da595bc240989e07a9457f5a634e |
| رقم الأكسشن: | edsdoj.4c0da595bc240989e07a9457f5a634e |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 18069088 01006762 |
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| DOI: | 10.1590/0100-67622015000600008 |