标题：Impact of land use types on population structure and extent of bark and foliage harvest of Afzelia africana and Pterocarpus erinaceus in Eastern Burkina Faso
期刊名称：International Journal of Biodiversity and Conservation
电子版ISSN：2141-243X
出版年度：2011
卷号：3
期号：3
页码：62-72
语种：English
出版社：Academic Journals
摘要：In the West African Sudanian regions, people depend on natural products, especially on highly valued species as source of income, fuel wood, food, medicine, fodder for livestock etc. However, land-use management coupled with unsustainable uses of highly valued trees might jeopardize the long-term viability of some species’ populations. Thus, we compared the population structures of two trees, Afzelia africana and Pterocarpus erinaceus and the extent of bark and foliage harvesting within two contrasting land-use types using a random stratified design with 45 replication plots for each species. For both species, population structures were stable in the protected area whereas they showed a declining structure in the agroforestry parklands with lower densities of seedlings and adults as well as a total lack of saplings and young mature trees. In addition, both specieswere over-exploited. More individuals of A. africana and P. erinaceus were harvested with a weak to severe intensity in the parklands, while only few individuals were harvested in the protected area, with a higher proportion of weak to medium intensity. To ensure conservation of these highly valued species, participatory introduction of juveniles and sensitization for seedling protection are required in the agroforestry parklands.
关键词：Population structure;W National Park;agroforestry parklands;pruning;debarking;West Africa
