Abstract
The amount of photosynthetic radiation intercepted by a crop is a function of the incident solar radiation on the plants, the leaf area index (L AI), and the light extinction coefficient (k). We quantified L AI and k in stands of black wattle (Acacia mearnsii De Wild.) over a 7-year growth cycle at two locations in the state of Rio Grande do Sul, Brazil. Our study was conducted in commercial stands in agroecological regions with high densities of black wattle plantations. L AI was calculated as the ratio between the leaf area of a tree and its planting space, and k was derived from Beer’s law. L AI depends on the planting site and stand age. Between the two sites, the L AI was similar over time, the amount of variation differed. Values of k depended only on stand age, with the highest average observed for stands up to 5 years old. The trend of k during the plantation cycle was inversely proportional to L AI and was correlated with L AI, leaf area, leaf dry mass, canopy volume, height, branches dry mass, total dry mass, and crown diameter.
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Almeida AC, Soares JV (2003) Comparação entre uso de água em plantações de Eucalyptus grandis e floresta ombrófila densa (mata atlântica) na costa leste do Brasil. Rev Árvore 27(2):159–170
Brown RH, Blaser RE (1968) Leaf area index in pasture growth. Herb Abstr 38(1):1–9
Callegari-Jaques SM (2003) Bioestatística – Princípios e Aplicações. ArtMed, Porto Alegre, p 207
Campbell GS (1986) Extinction coefficients for radiation in plant canopies calculated using an ellipsoidal inclination angle distribution. Agric Meteorol 36:317–321
Larcher W (2000) Ecofisiologia Vegetal. Rima Artes e Textos, São Carlos, p 531
Linhares CA, Ponzoni FJ, Shimabukuro YE (2000) Relação entre volume de madeira e índice de área foliar em um povoamento de Pinus spp.: estudo de caso. Rev Árvore 24:47–54
Longdoz B, Aubinet M, François LM (2004) Model of forest carbon sequestration incorporating aerial wood radiative budget. Agric Meteorol 125:83–104
Mochiutti S. 2007. Produtividade e sustentabilidade de plantações de acácia-negra (Acacia mearnsii De Wild.) no Rio Grande do Sul. PhD Dissertation on Forest Science. Federal University of Paraná. 270 pp
Monteith JL, Unsworth MH (1990) Principles of environmental physics, 2nd edn. Edward Arnold, London, p 291
Rhodes I (1973) Relationship between canopy structure and productivity in herbage grasses and its implication for plant breeding. Herb Abstr 43:129–133
Varlet-Grancher C, Gosse G, Chartier M, Sinoquet H, Bonhomme R, Allirand JM (1989) Mise au point: rayonnement solaire absorbé ou intercepté par un couvert végétal. Agronomie 9:419–439
Watson DJ (1947) Comparative physiological studies on growth of field crops. I. Variation in net assimilation rate and leaf area between species and varieties, and within and between years. Ann Bot 11:41–76
Watson DJ (1958) The dependence of net assimilation on leaf area index. Ann Bot 22(85):37–54
Xavier AC, Soares JV, Almeida AC (2002) Variação do índice de área foliar em clones de eucalipto ao longo de seu ciclo de crescimento. Rev Árvore 26(4):421–427
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Behling, A., Sanquetta, C.R., Corte, A.P.D. et al. Tracking leaf area index and coefficient of light extinction over the harvesting cycle of black wattle. J. For. Res. 27, 1211–1217 (2016). https://doi.org/10.1007/s11676-016-0279-1
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DOI: https://doi.org/10.1007/s11676-016-0279-1