Here are entered works on any sustainable land use system that maintains or increases total yields by combining agricultural crops, tree crops, forest trees, and/or livestock on the same unit of land, either alternately or at the same time, using management practices that suit the social and cultural characteristics of the local people and the economic and ecological conditions of the area.
Here are entered economic works on the availability of food. Works on the physical and economic access to adequate food are entered under Food security. --subdivision Food supply under individual wars, e.g. World War, 1939-1945--Food supply