Research advances on eco-chemical behaviors and toxicological effects of cadmium in root-soil interface Effects of Different Nitrogen Sources on Transformation and Availability of Inorganic Phosphorus in the Root-Soil Interface of Pinus thunbergii Seedlings Growth, distribution and exudation of fine roots of Chinese fir trees grown in continuously cropped plantations Nutrient retranslocation in fine roots of Cunninghamia lanceolata,Alnus cremastogyne and Kalopanax septemlobum in the mixed plantations-a pilot study Chemical behavior and ecological effects of pollutants acting on root-soil interface