Relationships between land-facets, soil and floristic composition in the rain forests of Jambi, Sumatra

Bar-Hen Avner, Laumonier Yves, Nurhayati, Dessard Hélène. 1999. Relationships between land-facets, soil and floristic composition in the rain forests of Jambi, Sumatra. In : Data management and modelling using remote sensing and GIS for tropical forest land inventory. Proceedings of the FIMP-INTAG International conference. October, 26-29, 1998, Jakarta, Indonesia. Laumonier Yves (ed.), King B. (ed.), Legg C. (ed.), Rennolls Keith (ed.). Forest Inventory and Monitoring Project, University of Greenwich-School of Computing and Mathematical Sciences. Jakarta : European Union, pp. 413-419. ISBN 979-95696-0-5 International Conference on Data Management and Modelling Using Remote Sensing and GIS for Tropical Forest Land Inventory, Jakarta, Indonésie, 26 October 1998/29 October 1998.

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Abstract : Tropical rain forests are extremely complex dynamic systems displaying very high diversity. One aim of the investigations undertaken by the Forest Inventory and Monitoring Project was to try to characterize these systems in terms of a limited number of forest types or habitats. If such a classification can be validated, it could be used as a basis for summarizing and extrapolating field data to larger areas in combination with the GIS capabilities of the Integrated Forest Resource Information System developed in FIMP. Five locations have been studied in the province of Jambi, Sumatra. For each location, land facet, soil and forest characteristics have been recorded on plots of 100 m x 10 m for a total of 196 plots. The relationships between land facet and species composition are analyzed as contingency tables. Secondly, the relationships between land facets and forest structure variables were studied through analysis of the variance, non-normal data being transformed. Finally, discriminant analysis was used to investigate the relationships between soil properties and species composition. For each species, two populations can be defined and the discriminatory power of the soil variables was tested. Results indicate that there is little relationship between land facet and the presence (or absence) of species. However the effect of land facets appears clearly when considering the structure of the forest. Although the mean diameter and volume are not related to land facet, the height of the first branch is dependent on it, and the effect is strong for small tree species density. Land facets have also a strong influence on the life form distribution structure as pandan, rotan, epiphyte and big liana, that can be interpreted in term of forest dynamics. Except for few soil parameters like pH (KCl), soil composition cannot be considered as good indicator of the presence or absence of a species

Mots-clés Agrovoc : Forêt humide, Propriété physicochimique du sol, Composition botanique, Topographie, Système d'information géographique, Distribution spatiale, Caractéristique du peuplement, Méthode statistique

Mots-clés géographiques Agrovoc : Indonésie, Sumatra

Classification Agris : K01 - Forestry - General aspects
F40 - Plant ecology

Auteurs et affiliations

  • Bar-Hen Avner
  • Nurhayati

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