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vol. 9, nr. 3 (2007)
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Leaf area index of wood and shrub vegetation of wetland areas
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Jacek Leśny
, Krzysztof Szoszkiewicz
, Radosław Juszcza
, Janusz Olejnik
, Tomasz Serba
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| (get PDF )
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Department of Agrometeorology, Agricultural University, ul. Piątkowska 94B, 61-691 Poznań
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vol. 9 (2007), nr. 3,
pp. 673-684
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abstract:
Leaf Area Index (LAI) is one of the most important environmental parameters because it reflects a range of ecological processes which have a significant influence on energy and mass exchange between any ecosystem and the atmosphere. In this paper some results of LAI measurement are presented. LAI measurements were carried out for various shrub and wood plant communities which were classified phytosociologically. Measurements of foliage development (LAI) were carried out on the area of the floodplain of the Warta River and the Vistula River, as well as on the wetland located in the Notecka Forests. Analyses of LAI values were conducted for homogenous vegetation types, as well as for isolated trees and shrubs. The mean value of the measured LAI of shrubs growing separately in the flooded zone was 3.2 and the width of the 95% confidence interval was 1.1. LAI values of uniform shrub and wood communities such as Salicetum triandrio-viminalis and Salici-Populetum albae were estimated as 2.0 and 1.7, respectively, with confidence intervals for summer estimates close to 1. LAI of shrubs growing in the center of peatland does not exceed 2, and its development is slower compared with shrubs in the Warta River floodplain. Low LAI values for shrub and wood vegetation of the flooded plain and wetlands shows that these types of habitat provide inferior conditions for the development of vegetation.
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keywords:
leaf area index, wetland, plant communities
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original in:
Polish
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