Data/hora: 09/06/2024 09:29:53

Provedor de dados: 	86	
País: 	Brazil	
Título: 	Use of topsoil for restoration of a degraded pasture área	
Autores: 	Amaral,Luise Andrade; Pereira,Israel Marinho; Silva,Michele Aparecida Pereira da; Oliveira,Marcio Leles Romarco de; Machado,Evandro Luiz Mendonça; Laia,Marcelo Luiz de.	
Data: 	2017-11-01	
Ano: 	2017	
Palavras-chave: 	Ecosystem restoration; Fertility; Natural regeneration; Topsoil application.	
Resumo: 	Abstract: The objective of this work was to evaluate the influence of topsoil thickness, shading and origin when performing environmental restoration in a degraded pasture area. The experiment was conducted in a randomized block design with a factorial (3 x 2 x 2) + 2 layout. Treatments consisted of combinations of topsoil origins (forest at early or middle regeneration stages), topsoil thicknesses (10, 20, or 30-cm superficial soil layer), and presence or absence of 70% shading; with two additional control treatments. Surveys on topsoil physical-chemical attributes and flora and soil coverage were conducted. Good correlation was observed between bulk density and total porosity. Vegetation comprised a total of 2,932 individuals of herbaceous, shrub and subshrub plants; 33 species in 11 families and 1 morphospecies were identified. A floristic survey of the tree stratum revealed 235 individuals belonging to 21 species and 14 families, as well as 2 unidentified species. The best natural regeneration index is observed in the 20-cm topsoil layer, where shading exerts a positive influence on the humidity and natural regeneration of the seed bank. Topsoil from middle-stage forest is the most suitable for restoration of degraded pasture areas.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001101080	
Editor: 	Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira	
Relação: 	10.1590/s0100-204x2017001100014	
Formato: 	text/html	
Fonte: 	Pesquisa Agropecuária Brasileira  v.52 n.11 2017	
Fonte: 	info:eu-repo/semantics/openAccess