Geochemical Zoning Based on Agricultural Environmental Quality in the Poyang Lake Area

On the basis of the results from the 1∶250000 Multi-purpose regional geochemical survey of the Poyang Lake and its surrounding economic areas, the paper classifies the whole area into three types of agricultural zones of the highgrade, mediumgrade and lowgrade based on its geochemical characteristics, including acidity and alkalinity of the soil, nourishing elements, abundance and lack of the useful elements, content of organic substances and degree of heavy metal pollution, etc. The environment conditions, such as landforms, sunlight, temperature and water resources are also considered in adjusting the local agricultural structure.