[en] Madagascar shelters a unique biodiversity that faces numerous threats, such as human activities, which cause deforestation. The objective of this study was to identify the landscape forest's dynamics of the Reserve Speciale d'Ambatovaky (RSA) from 1996 to 2050 based upon a first order Markov chain model. For this purpose, LANDSAT images of 1996, 2004 and 2014 were used to compose the land cover maps. A transition matrix made it possible to simulate the composition of the landscape until 2050. The results showed that the forest area of RSA decreased and is substituted by a secondary formation called "savoka" that appears several years after the end of agricultural activities. Slash-and-burn agriculture, called locally "tavy", is a common practice of farmers in the coastal areas of Madagascar. Tavy is the main reason for the decline of the forest area.
Disciplines :
Environmental sciences & ecology
Author, co-author :
Rakotondrasoa, L. O.; Universite d'Antananarivo, Ecole Superieure des Sciences Agronomiques, Departement des Eaux et Forets, Antananarivo, Madagascar
Malaisse, François ; Université de Liège - ULiège > Ingénierie des biosystèmes (Biose) > Biodiversité et Paysage
Bogaert, Jan ; Université de Liège - ULiège > Ingénierie des biosystèmes (Biose) > Biodiversité et Paysage
Language :
French
Title :
Modélisation de la dynamique du paysage forestier de la Réserve Speciale d'Ambatovaky (Nord-Est de Madagascar)
Alternative titles :
[en] Modelling of the forest landscape dynamics of réserve spéciale d'Ambatovaky (Northeast of Madagascar)
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