caa a22 4500 44536775X CHVBK 20180317142936.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s00484-010-0317-1 doi (NATIONALLICENCE)springer-10.1007/s00484-010-0317-1 Leaf area index of a tropical semi-deciduous forest of the southern Amazon Basin [Elektronische Daten] [Osvaldo Pinto-Júnior, Luciana Sanches, Francisco de Almeida Lobo, Adilson Brandão, José de Souza Nogueira] Leaf area index (LAI) is an important ecophysiological variable because leaves are the organs responsible for gas exchange between plants and the atmosphere. This variable can be calculated from primary values of leaf area assessed by destructive or non-destructive methods, which is relatively easy when crop species are investigated, but is not the case when the focus is on natural wood plants communities. In this paper, we analyze the seasonality of LAI estimated by three different methods in the Amazonia-savannah transitional forest, located 50km north-east of Sinop city, Mato Grosso, Brazil. In the first method, we combine Monsi and Saekis' original method [Monsi M, Saeki T (1953) Jpn J Bot 14:22-52], which measures LAI using the Beer-Lambert extinction law, and the proposition of Goudriaan [Goudriaan J (1988) Agric For Meteorol 43:155-169] to estimate the extinction coefficient from solar height. The second method differed from the first only in the way in which the daily fraction of intercepted photosynthetic active radiation (FPAR) was calculated, as proposed by Charles-Edwards and Lawn (Charles-Edwards DA, Lawn RJ (1984) Plant Cell Environ 7:247-251]. In the third method, we used a remote sensing technique [MOD15_BU-collection 4, produced and distributed by EROS Data Center Distributed Active Archive Center (EDC DAAC)]. We found that the first and the second methods revealed the expected LAI dynamics, which increased during the dry-wet transition and wet season, and decreased during the wet-dry transition and dry season. From 20 randomly distributed sets in a 1.0 ha area, only 3 showed significant differences in LAI estimated from the first two methods; conversely, LAI was overestimated by the third method. ISB, 2010 Radiation interception nationallicence Photosynthetically active radiation nationallicence Extinction coefficient nationallicence Pinto-Júnior Osvaldo Department of Soil and Rural Engineering, Federal University of Mato Grosso, Av. Fernando Correa da Costa s/n, 78.060-900, Cuiabá, MT, Brazil aut Sanches Luciana Department of Sanitary and Environmental Engineering, Federal University of Mato Grosso, Av. Fernando Correa da Costa s/n, 78.060-900, Cuiabá, MT, Brazil aut de Almeida Lobo Francisco Department of Soil and Rural Engineering, Federal University of Mato Grosso, Av. Fernando Correa da Costa s/n, 78.060-900, Cuiabá, MT, Brazil aut Brandão Adilson Department of Soil and Rural Engineering, Federal University of Mato Grosso, Av. Fernando Correa da Costa s/n, 78.060-900, Cuiabá, MT, Brazil aut de Souza Nogueira José Department of Physics, Federal University of Mato Grosso, Av. Fernando Correa da Costa s/n, 78.060-900, Cuiabá, MT, Brazil aut International Journal of Biometeorology Springer-Verlag 55/2(2011-03-01), 109-118 0020-7128 55:2<109 2011 55 484 https://doi.org/10.1007/s00484-010-0317-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00484-010-0317-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pinto-Júnior Osvaldo Department of Soil and Rural Engineering, Federal University of Mato Grosso, Av. Fernando Correa da Costa s/n, 78.060-900, Cuiabá, MT, Brazil aut NATIONALLICENCE 700 1- Sanches Luciana Department of Sanitary and Environmental Engineering, Federal University of Mato Grosso, Av. Fernando Correa da Costa s/n, 78.060-900, Cuiabá, MT, Brazil aut NATIONALLICENCE 700 1- de Almeida Lobo Francisco Department of Soil and Rural Engineering, Federal University of Mato Grosso, Av. Fernando Correa da Costa s/n, 78.060-900, Cuiabá, MT, Brazil aut NATIONALLICENCE 700 1- Brandão Adilson Department of Soil and Rural Engineering, Federal University of Mato Grosso, Av. Fernando Correa da Costa s/n, 78.060-900, Cuiabá, MT, Brazil aut NATIONALLICENCE 700 1- de Souza Nogueira José Department of Physics, Federal University of Mato Grosso, Av. Fernando Correa da Costa s/n, 78.060-900, Cuiabá, MT, Brazil aut NATIONALLICENCE 773 0- International Journal of Biometeorology Springer-Verlag 55/2(2011-03-01), 109-118 0020-7128 55:2<109 2011 55 484 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer