Data/hora: 03/06/2024 15:44:23

Biblioteca(s): 	Embrapa Agrobiologia; Embrapa Meio Norte / UEP-Parnaíba.	
Data corrente: 	27/06/1995	
Data da última atualização: 	27/06/1995	
Autoria: 	WARDLE, D. A.	
Título: 	A comparative assessment of factors which influence microbial biomass carbon and nitrogen levels in soil.	
Ano de publicação: 	1992	
Fonte/Imprenta: 	Biol. Rev., v.67, p.321-358, 1992.	
Idioma: 	Inglês	
Conteúdo: 	1.Microbial biomass levels in soil are strongly influenced by levels of organic carbon and nitrogen, although the proportion of soil carbon and nitrogen incorporated into the microbial biomass is inversely related to soil carbon content and the soil carbon/nitrogen ratio. In manysystems the microbial biomass appears to be more strongly related to total soil nitrogen than total organic carbon. This appears to be the case over both localized and global spatial scales.  2.The important oforganic matter quantity and quality in influencing microbial biomass levels in soils is reflected in the responses of microbial biomass to pant growth,and residue management  and distribution, especially in agro-ecosystems. 3.Soil pH appears to exert a dominating influence on theincorporation of organic matter into the microbial biomass, and is probably at least as important a factor as soil carbon and nitrogen in this regard. This is consistent over both localized and global scales. 4.On a localized spatial scale the microbial biomass demonstrates a highly variable response to soil moisture and temperature, although rapiddrying usually kills a significant portion of the microbial biomass. 5.On a global spatial scale the magnitude of the soil microbial biomassis neutrally or negatively related to mean temperature of the coldest months, while the proportion of soil carbon and nitrogen in the microbial biomass is neutrally or positively related to temperature. The possible reasons for this are discussed. This trend does not hold for...	
Palavras-Chave: 	Biomassa microbiana; IMOBILIZACAO; Moisture; REVISAO.	
Thesagro: 	Carbono; Metal Pesado; Mineralização; Nitrogênio; Ph; Rizosfera; Textura; Umidade.	
Thesaurus Nal: 	carbon; microbial biomass; nitrogen; texture.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Agrobiologia (CNPAB)	
Exemplares: 	CPAMN-UEPP - (4643-1) - ADC - SP - -- -  -  - 1996.00002 - DIS
CNPAB - (23420-1) - ADC - SP - -- -  -  - 21279 - DIS