The Section of intensive Short-Rotation Forestry at the Swedish University of Agricultural Sciences incorporates several programmes on biomass production for energy and fibre and its integration with environmental aspects such as biofilters, waste recycling, etc. The major programmes are: Woody biomass production, optimization of woody biomass production of deciduous trees by irrigation and fertilization, deciduous forests on clay soil, utilization of sludge as a fertilizer in short-rotation forestry, and purification of ground water by short-rotation forestry. To achieve the goals, different production systems are being investigated on a wide range of different sites. The emphasis is on intensive short rotation coppice cultivation of Salix spp on agricultural land for production of biomass for energy. Other production systems presently under investigation are extensively cultivated, longer rotation willow plantations, single-tree poplar plantations and mixed deciduous forests.