Data/hora: 17/06/2024 19:08:10

Biblioteca(s): | Embrapa Amazônia Ocidental.
Data corrente: | 04/12/2000
Data da última atualização: | 17/06/2015
Autoria: | MENYAILO, O.; LEHMANN, J.; CRAVO, M.; ZECH, W.
Afiliação: | Institute of Forest SB RAS; Univesity of Bayreuth; Embrapa Amazonia Ocidental.
Título: | Single tree-effects on denitrification and soil microbial biomass in agroforestry systems and natural forests of the Amazon region.
Ano de publicação: | 2000
Fonte/Imprenta: | In: GERMAN-BRAZILIAN WORKSHOP ON NEOTROPICAL ECOSYSTEMS, 2000, Hamburg. Programa and abstracts... Hamburg: University, 2000.
Páginas: | p. 177.
Idioma: | Inglês
Conteúdo: | 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.
Palavras-Chave: | Agrofloresta; Amazonas; Brasil; Manaus; Species; Sumauma; Urucu.
Thesagro: | Andiroba; Biomassa; Bixa Orellana; Carapa Guianensis; Carbono; Ceiba Pentandra; Conservação do Solo; Cultivo Multiplo; Cupuaçu; Dióxido de Carbono; Espécie; Fauna Edáfica; Floresta Tropical Úmida; Theobroma Grandiflorum.
Thesaurus Nal: | agroforestry; biomass; carbon dioxide; Eschweilera; multiple cropping; soil conservation; soil fauna; Vismia.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/125526/1/p.-177.pdf
Registro original: | Embrapa Amazônia Ocidental (CPAA)
Exemplares: | CPAA - (5621-1) - UPC - RA - PP - R634.99 - G375p - 2000.00193 - DIS