Zinc is an essential nutrient element for biological organisms, but it is toxic to plant, animal and human at excess levels. The behavior, transfer and movement of zinc in soil-planthuman or animal system were reviewed. The major processes determining zinc dynamics in agricultural system, zinc concentrations in edible parts of major crops, and main factors affecting zinc bioavailability were discused in this paper. The forms of zinc in food were also briefly discussed. Zinc concentrations in animal meat or...