A Look at Amazon Basin Seasonal Dynamics with the Biophysical ...
A Look at Amazon Basin Seasonal Dynamics with the Biophysical ...
A Look at Amazon Basin Seasonal Dynamics with the Biophysical ...
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Project:Title:Authors:LBA-CARBONSINKW<strong>at</strong>er balance and carbon leaching of a rainforest c<strong>at</strong>chment in Central <strong>Amazon</strong>ia.M.J. W<strong>at</strong>erloo 1 , A.D. Nobre 2 , W.W.P. Jans 3 , A. Cuartas Pineda 2 , D.P. Drucker 4 , J.M.Heijmenberg 1 , M.G. Hodnett 5 , W. Gomes Neto 2 , A. Nascimento 2 , J. Tomasella 6 .1 Vrije Universiteit Amsterdam, Faculty of Earth and Life Sciences, De Boelelaan 1085, 1081 HVAmsterdam The Ne<strong>the</strong>rlands2 INPA, Av. André Araújo 2936, Petrópolis, 69083-000, Manaus, AM, Brasil3 Alterra Droevendaalsesteeg 3, Building 101, P.O. Box 47, 6700 AA Wageningen, The Ne<strong>the</strong>rlands4 Escola Superior de Agricultura Luiz de Queiroz – USP, Av. Pádua Dias, 11 / 151 – Agronomia, Piracicaba- SP - C.E.P.: 13418-900, Brasil5 Centre for Ecology and Hydrology, Wallingford, OX10 8BB, UK6 CPTEC-INPE, Rodovia Presidente Dutra km 40, Cachoeira Paulista – SP, Brasil.AbstractSince 1999, CO 2 flux measurements have been made in <strong>the</strong> Cuieiras Reserve near Manaus. Recently, <strong>the</strong>research has been extended to include and hydrological studies. One of <strong>the</strong> aims of <strong>the</strong>se studies is to assess<strong>the</strong> losses of carbon released from <strong>the</strong> forest by decomposition and transported out of <strong>the</strong> area as dissolvedor particul<strong>at</strong>e m<strong>at</strong>ter in surface and ground w<strong>at</strong>er. Due to delays in instrument<strong>at</strong>ion a single year of d<strong>at</strong>a willbe available <strong>at</strong> <strong>the</strong> end of <strong>the</strong> Carbonsink-LBA project in 2002. To simul<strong>at</strong>e losses over longer periods, <strong>the</strong>TOPOG model (http://www.clw.csiro.au/topog) will be used to simul<strong>at</strong>e discharge and carbon leaching.TOPOG is a terrain analysis-based hydrological model, which can be used to describe <strong>the</strong> topographic<strong>at</strong>tributes of three-dimensional landscapes and simul<strong>at</strong>e <strong>the</strong> hydrologic behaviour of c<strong>at</strong>chments, and howthis is affected by changes in land cover. The model uses micrometeorological, soil and veget<strong>at</strong>ion d<strong>at</strong>a asinput and will be calibr<strong>at</strong>ed on measured discharge and groundw<strong>at</strong>er levels. Rel<strong>at</strong>ions between dischargeand concentr<strong>at</strong>ions of total organic carbon (TOC) and particul<strong>at</strong>e carbon will <strong>the</strong>n be used to obtainestim<strong>at</strong>es of carbon leaching from 1999 onwards, when <strong>the</strong> micrometeorological measurements started. Theposter shows field d<strong>at</strong>a and preliminary model results such as a digital terrain model, aspect and slope mapsand a preliminary map showing <strong>the</strong> distribution of <strong>the</strong> groundw<strong>at</strong>er level in <strong>the</strong> c<strong>at</strong>chment. In addition, anestim<strong>at</strong>e of <strong>the</strong> total rainfall, discharge and associ<strong>at</strong>ed outflow of carbon over a six-month period will bepresented.
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