TAILIEUCHUNG - Báo cáo khoa học: "Carbon and mineral nutrient pools in a gallery forest at Mogi Guaçu River, Southeast Brazil"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: Carbon and mineral nutrient pools in a gallery forest at Mogi Guaçu River, Southeast Brazil. | 39 Ann. For. Sci. 57 2000 39-47 INRA EDP Sciences 2000 Original article Carbon and mineral nutrient pools in a gallery forest at Mogi Guaẹu River Southeast Brazil C Welington . Delitti8 and Déborah M. Burgera a Departamento de Ecologia Geral Institute de Biociências Universidade de São Paulo Caixa Postal 11461 CEP 05422-970 São Paulo SP Brazil b CEAM Centro de Estudios Ambientales del Mediterráneo Parque Tecnológico C 4 Sector Oeste 46980 Paterna Valencia Spain Received 25 February 1999 accepted 15 May 1999 Abstract - The objective of this study is to quantify the concentration and total amount of nutrients stored in a gallery forest ecosystem. The study was carried out in a forest along the Mogi Guaẹu River Itapira . Southeast Brazil. Aboveground plant biomass and nutrient content were measured by the destructive method and the soil analysed for nutrient content. In the plant biomass leaves showed the greatest nutrient concentrations but stems comprised the major nutrient pools due to their greater biomass 95 of the total . Trees stored the greatest part of the forest aboveground nutrients as they represent 88 of the total vegetation biomass. More nutrients were present in the soil than in the vegetation due to the soil greater mass. The mean cycling times in this type of ecosystem were calculated as the ratio between the pools and the fluxes of each nutrient. Results were compared with other tropical ecosystems. carbon gallery forest mineralmass nutrient concentration nutrient pools soil carbon soil nutrients Résumé - Carbone et stock d éléments minéraux dans une forêt galerie de la rivière Mogi Guaẹu au Sud Est du Brésil. L objectif de cette étude est de quantifier la concentration et le contenu total d éléments minéraux accumulés dans un écosystème de forêt galerie. L étude s est développée dans une bande de forêt le long de la rive de la rivière Mogi Guaẹu Itapira dans l Etat de Sao Paolo au Sud Est du Brésil. La biomasse végétale aérienne a été mesurée

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