Journal Article 1 Research Support, Non-U.S. Gov't 1 Research Support, U.S. Gov't, Non-P.H.S. 1 Soil 1 agroforestry 1 land-use alternatives 1 multispecies systems 1 mehr ... perennialization 1 permaculture 1 polyculture 1 silvoarable 1 sustainable agriculture 1 tree crops 1 tree-based intercropping weniger ...