@AudiovisualMaterial{SaatchiAlva:2004:SpVaFo,
             abstract = "Spatial variation in tropical rain forest structure is an 
                         important factor in quantifying the aboveground biomass (AGB) and 
                         carbon stock and extrapolating plot measurements to regional or 
                         global scales. We analyzed structural data collected in 25 ha area 
                         in an intact lowland forest around the flux tower at the Jaru 
                         Reserve in Rondonia, Brazil to address the spatial variability in 
                         stem density, basal area, canopy roughness, and AGB. The transects 
                         were designed prior to the field survery with the help of a one 
                         meter resolution IKONOS image over spectrally homogeneous regions 
                         away from disturbances. Five permanent 50 m x 1000m transects were 
                         installed and Live trees with diameter at breast height (dbh) 
                         ¡{\'Y} 35 cm were collected within the 50 m wide transect with an 
                         addition of trees ¡{\'Y} 5 cm in a narrower transect (5 m x 1000 
                         m) in the middle of wider transects. Among the total of 3626 trees 
                         measured on all transects, trees with dbh ¡{\'Y} 5 cm had average 
                         frequencies of 1015 ha-1 and whereas the trees ¡{\'Y} 35 cm had a 
                         frequency of 48 ha-1. Allomertic equations based on dbh were used 
                         to compute canopy height and above ground biomass for various 
                         segments of the transect to estimate the effect of spatial scales 
                         from 100 m to 1 km for roughness and biomass estimation. The 
                         results for five transects are compared and the scaling criteria 
                         are discussed within and across transects.",
          affiliation = "{CPTEC-INPE-Cachoeira Paulista-12630-000-SP-Brasil}",
               author = "Saatchi, Sassan S. and Alvala, Regina Celia dos Santos",
                 city = "Brasilia",
       conferencename = "Conferencia Cientifica do LBA, 3.",
           copyholder = "SID/SCD",
                 date = "27-29 jul.",
             language = "en",
                  ibi = "cptec.inpe.br/walmeida/2004/08.03.15.17",
                  url = "http://urlib.net/ibi/cptec.inpe.br/walmeida/2004/08.03.15.17",
           targetfile = "3_3 Sassan Saatchi Spatial Variation of Forest.pdf",
                title = "Spatial Variation of Forest Structure and Aboveground Biomass in 
                         Jaru Reserve, Rondonia, Brazil",
                 year = "2004",
        urlaccessdate = "23 maio 2024"
}