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：1993
卷号：4
期号：2
页码：113-116
出版社：John Libbey Eurotext
摘要：Author Said Melzi USTHB/URBT, BP 812, Alger-Gare. Page(s) : 113-6 Published in: 1993 The state of vegetation in the pre-Saharan plains or Algeria is determined by several factors. The effect of rain varies according to region, and depends upon the type of sanded-up milieu. We carried out long-term observations of vegetational variation in a number of sites on two levels. During the dry phase, degradation due by human activity was intense and sanding-up dynamic. Rainy periods were sometimes accompanied by spectacular regrowth. The present study provides for better understanding of the dynamics of these milieux and hence of the desertification process.
