... two undisturbed tropical rain forests and three slash - and - burn sites in the Amazon region of southwestern Venezuela . Nitrification was higher in the soils of the slash - and - burn sites than in the undisturbed forests . Rates ...
Biotropica ( EE.UU. ) 21 ( 3 ) : 204-209 . MONTAGNINI , F .; BUSCHBACHER , R. 1989. Nitrification rates in two undisturbed tropical rain forests and three slash - and - burn sites of the Venezuelan Amazon . Biotropica ( EE.UU. ) ...