Transpiration in large size species in Caxiuanã National Forest, in the State of Pará, Brazil

Revista Brasileira de Engenharia Agrícola e Ambiental

Costa, Antonio C. L.²  Malhi, Yadvinder S.⁴  Gonçalves, Paulo H. L.²  Grace, John³  Silva Jr., João de A.²  Silva, Vicente de P. R. da⁵  Braga, Alan P.²  Meir, Patrick³  Ruivo, Maria L. P.¹  Costa, Rafael F. da⁵ 

[1] Museu Paraense Emilio Goeldi, Belém;UFPA, Belém;University of Edinburgh, Scotland;University of Oxford, England;UFCG, Campina Grande

关键词: Amazon;    Eschweilera coriacea;    LBA;    sap flow     INTRODUÇÃO O Experimento 'O Impacto da Seca Prolongada nos Fluxos de Água e Dióxido de Carbono em uma Floresta Tropical Amazônica' (ESECAFLOR) está sendo desenvolvido como parte integrante do -Experimento de Grande Escala da Biosfera-Atmosfera na Amazônia- (LBA);    na Floresta Nacional (FLONA) de Caxiuanã;    no Estado do Pará;   

DOI  :  10.1590/S1415-43662007000200008

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

During the "Long-term impact of drought on water and carbon dioxide fluxes in Amazonian Tropical Rainforest Experiment" (ESECAFLOR), this study was carried out, which is a subproject of Large Scale Biosphere Atmosphere Experiment in Amazônia (LBA), located in the Ferreira Penna Scientific Station (FPSS) in the Caxiuanã National Forest (CNF) in Pará State (1º 42- 30-- S; 51º 31-45-- W; 62 m altitude). The region has a well-preserved forest, with canopy of 35 m. The predominate tree species in the landscape are Eschweilera coriacea (White Matá-matá), Voucapoua americana (Acapu) and Protium pallidum (White Pitch). Sap flow measurements were made in the wet season (03-16 December 2000 and 12-25 January 2003), to evidence the effect of long term induced drought, aiming to determinate the transpiration of Eschweilera coriacea. The ESECAFLOR site consists of two different areas with 1 ha each. Plot A (control) and Plot B (rainfall exclusion). The Trunk Heat Balance (THB) method was applied to sap flow measurements, by Sap Flow Meter P4.1 system. Between analysed periods, the mean transpiration of E. Coriacea increased 56% in the tree A237 (control plot) and decreased 68% in B381 (drought plot).

【 授权许可】

CC BY-NC