Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/670037
Research center of Embrapa/Collection: Embrapa Amazônia Ocidental - Resumo em anais de congresso (ALICE)
Date Issued: 2000
Type of Material: Resumo em anais de congresso (ALICE)
Authors: MENYAILO, O.
LEHMANN, J.
CRAVO, M.
ZECH, W.
Additional Information: Institute of Forest SB RAS; Univesity of Bayreuth; Embrapa Amazonia Ocidental.
Title: Single tree-effects on denitrification and soil microbial biomass in agroforestry systems and natural forests of the Amazon region.
Publisher: In: GERMAN-BRAZILIAN WORKSHOP ON NEOTROPICAL ECOSYSTEMS, 2000, Hamburg. Programa and abstracts... Hamburg: University, 2000.
Pages: p. 177.
Language: en
Keywords: Agrofloresta
Urucu
Sumauma
Brasil
Amazonas
Manaus
Species.
Description: The present study was to find the effect of tree species (andiroba, cupuacu, Eschweilera sp, sumauma, urucu, Vismia sp)used in agroforestry system in Amazonian region (Brasil) and natural forests on the total biomass of heterotrophic microorganisms (BH), which is mainly responsible for CO2 emission, and on the biomass of denitrifiers (BD), which contro N2O emission. Both biomasses were studied using the kinetic method.Most commonly used fruits species, cupuacu and urucu (annatto) 2-3 times increased BD. The BH was also affected by tree species. We alson wanted to find relationships between the biomasses studies and soil microbial activities. The BD was negatively related to the net N mineralization and basal respiration rates, and positively to net nitrification and denitrifications rats (<0.05). BH was positively related to the net N mineralization, basal and substrate-induced respirations rates.
Thesagro: Biomassa
Andiroba
Bixa Orellana
Carapa Guianensis
Ceiba Pentandra
Carbono
Conservação do Solo
Cupuaçu
Cultivo Multiplo
Dióxido de Carbono
Fauna Edáfica
Espécie
Floresta Tropical Úmida
Theobroma Grandiflorum.
NAL Thesaurus: Eschweilera
agroforestry
Vismia
carbon dioxide
biomass
multiple cropping
soil conservation
soil fauna.
Data Created: 2000-12-04
Appears in Collections:Resumo em anais de congresso (CPAA)

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