期刊名称：Science et changements planétaires / Sécheresse
印刷版ISSN：1147-7806
电子版ISSN：1777-5922
出版年度：2011
卷号：22
期号：3
页码：197-206
DOI：10.1684/sec.2011.0310
出版社：John Libbey Eurotext
摘要：Figures See all figures Authors Kouider Cherifi , Zoheir Mehdadi , Ali Latreche , Salah Eddine Bachir Bouiadjara Université Djillali Liabès Faculté des sciences Laboratoire de biodiversité végétale: conservation et valorisation Sidi Bel’ Abbes 22000 Algérie, Université Djillali Liabès Faculté des sciences Laboratoire d’écodéveloppement des espaces Sidi Bel’ Abbes 22000 Algérie Key words: Algeria, anthropic factor, correspondence analysis (CA), degradation, ecosystems, forest species, phytoecology DOI : 10.1684/sec.2011.0310 Page(s) : 197-206 Published in: 2011 The work undertaken consists in evaluating the state of the forest ecosystem in Tessala mountain (Western Algeria) based on the phytoecological method. This approach revealed the presence of xeric species such as A sphodelus microcarpus Sal. et Viv., Calycotome spinosa Link. and Chamaerops humilis L., reflecting the installation of the anthropized area vegetation. From 10 stations sampled in the area, 41 species originating from 23 botanical families and 5 biological types were listed. The statistical processing of biological and edaphic data by correspondence analysis (CA) and hierarchical cluster analysis (CHA) brought to light the principal factors governing the distribution of the forest formations in the area. It highlighted two groups of stations which differ through their level of degradation: group A, composed of two subgroups (A1 and A2) having the least degraded stations (S2, S6, S7, S9 and S10) correlated with phanerophytes the recovery rate of which is important and group B, consisting of three subgroups (B1, B2 and B3) characterizing the highly degraded sites (S1, S3, S4, S5 and S8) and correlated with therophytes and chamaephytes.
