Multipurpose tree production systems
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This workshop on Multipurpose Tree Production System of IUFRO P.1.09.00 "Integrated Research in Biomass for Energy" and IPC/FAO Ad-hoc CommitY:ee on Biomass Production Systems in Salicaceae" was organ:_zed around the themes of biodiversity, sustainability and economic development. A total of 2:1 papers were presented and 66 participants from 14 different countries attended. The Chinese delegation representing a large number of Universities and Government agencies from across China was very significant, as was that of the African countries (Zanbia, Tanzania, Kenya and Ethiopia) supported by SIDA and guided by the Swedish delegation to a post-workshop study tour to view projects on soil erosion control. The presentations covered case studies and overviews of a wide range of industralized and developing countries.The topic of the first session included the selection of species and production systems for different economical and environmental conditions and pu rposes. In the second session the presentations focused on the need to consider long-term sustainability of the ecosystem when used for husbandry or when cultivated. The third and last session complemented the previous two by considering the "Socioeconomic aspects", of biological production systems such as their role in the social and economical patterns of the societies concerned. The approach to reforestation has so far been oriented primarily towards economical profit. The res tricted aareness and knowledge of natural resource management led to the complete destruction of many ecosystems or the replacement of natural forests by monocultures. Although production systems may vary considerably, from intensively cultivated wocdgrass lots to extensively managed agro-forestry, one of the major concerns must be to establish a system that is sustaiPable and of complementary nature for both the ecological and the economical point of view.