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：2009
卷号：20
期号：4
页码：394-396
DOI：10.1684/sec.2009.0211
出版社：John Libbey Eurotext
摘要：Figures See all figures Authors Kossi Adjonou , Ronald Bellefontaine , Kouami Kokou Laboratoire de botanique et écologie végétale Faculté des sciences Université de Lomé BP 1515 Lomé Togo, Cirad UPR génétique forestière F-34398 Montpellier France Key words: climate change, forest dynamics, natural regeneration, open forest, Togo DOI : 10.1684/sec.2009.0211 Page(s) : 394-6 Published in: 2009 The Anogeissus leiocarpus open forests are currently threatened and disappearing due to human activities and climate change. Having a relic aspect in the Oti-Keran National Parc, they are important for the rural populations and the wild fauna. This study has been conducted to better identify plant diversity, the dynamics and the current state of preservation. Some plant inventories have made it possible to register 326 species. The average density of the ligneous plants is 788 trees/ha. The distribution per diameter classes of the ligneous plants reveals a predominance of small diameter plants. The natural regeneration study reveals that, in our working conditions, the main ligneous species regenerate essentially by seeding (~89%) and very little by stump shoot (10.8%) and more rarely by sucker (0.4%). The temperature increase and rainfall decrease resulting from climate change have a negative impact on the ligneous plant dynamic of these forests. The effects of these phenomena are shown through an acute abnormal mortality of trees (mortality rate of 21.2%), especially at the level of the small diameter plants.
关键词：climate change; forest dynamics; natural regeneration; open forest; Togo
