Data/hora: 23/09/2024 16:02:47

Biblioteca(s): 	Embrapa Mandioca e Fruticultura.	
Data corrente: 	10/04/2012	
Data da última atualização: 	25/05/2023	
Autoria: 	SANTOS, D. C. F.; GRAZZIOTTI, P. H.; SILVA, A. C.; TRINDADE, A. V.; SILVA, E. de B.; COSTA, L. S. da; COSTA, H. A. O.	
Afiliação: 	DANIELLE CRISTINA FONSECA SANTOS, UFVJM; PAULO HENRIQUE GRAZZIOTTI, UFVJM; ALEXANDRE CHRISTÓFARO SILVA, UFVJM; ALDO VILAR TRINDADE, CNPMF; ENILSON DE BARROS SILVA, UFVJM; LIDIOMAR SOARES DA COSTA, UFVJM; HESMAEL ANTÔNIO ORLANDI COSTA, UFVJM.	
Título: 	Microbial and soil properties in restoration areas in the Jequitinhonha Valley, Minas Gerais.	
Ano de publicação: 	2011	
Fonte/Imprenta: 	Revista Brasileira de Ciência do Solo, v. 35, p. 2199-2206, 2011.	
ISSN: 	1806-9657	
Idioma: 	Inglês	
Conteúdo: 	To mitigate the impacts of eucalypt monoculture, forestry companies in the Upper Jequitinhonha Valley (MG) have adopted the insertion of strips of native vegetation in-between the commercial plantations. The method used for the creation of these corridors is to allow spontaneous regrowth of native vegetation in areas previously under eucalypt. The objective of this study was to evaluate the effect of cover crops on microbial and soil properties for a detailed description of the restoration process of native vegetation in forest soils of the Jequitinhonha Valley. The treatments were represented by an initial restoration stage (< 4 years) with or without remaining eucalypt and the advanced restoration stage (&gt; 4 years) with or without remaining eucalypt, plus the three controls: commercial eucalypt plantation, Cerrado vegetation and native forest. Soil samples were collected for three consecutive years in the dry and rainy season (August and February, respectively). The microbial activity, regardless of the presence of remaining eucalypt , did not differ among the restoration areas, except for the metabolic quotient (qCO2) in the rainy season of February 2007. At this time, this microbial activity was higher in the advanced restoration stage without eucalypt than initial restoration without eucalypt and advanced restoration with eucalypt. The restoration areas, in general, did not differ from the control: eucalypt plantation and Cerrado either. Compared to the forest, the levels of organic C, microbial C, basal respiration (Rbasal) and hydrolysis of fluorescein diacetate (FDA) in the restoration areas were, in general, lower and did not differ in qCO2 and microbial quotient (qMIC). In general, the soil quality was similar in the initial and advanced restoration stages. Most of the soil and microbial properties in the three years indicated that the restoration areas were most similar to the Cerrado. In the advanced restoration areas without eucalypt compared to Cerrado, the lower Rbasal in the 3rd year and the lower FDA and qMIC and higher qCO2 in the 2nd year indicated that the removal of the remaining eucalypt trees was unfavorable for restoration.	
Palavras-Chave: 	Degraded areas.	
Thesaurus Nal: 	microbial biomass; soil quality.	
Categoria do assunto: 	P Recursos Naturais, Ciências Ambientais e da Terra	
Registro original: 	Embrapa Mandioca e Fruticultura (CNPMF)	
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