The article deals the ecological and biogeochemical properties of leaves and fruits of fruit trees developed in the mid-mountain agrolandscape of the Velvelachai-Gusarchai interfluve area of the southern slope of the Greater Caucasus. The statistical distribution parameters of the amounts of some trace elements in the natural leaves of fruit trees of the middle mountain agrolandscape were studied, and the clarke of concentration of the amounts determined in them was calculated. It was determined that, the concentrations of Zn (1.1-1.9 CC), Pb (1.4-1.7 CC) are characteristic for the leaves of fruit trees of the agrolandscape - with a higher concentration in pear leaves, and concentration of Cu (1.6 CC) is also observed in this plant. It was concluded that the fruits of fruit trees of the agrolandscape are character-ized by a biogeochemical activity equal to 8.8 and the element complex studied with ra-tio indicates that it is mainly concentrated in the fruits of fruit trees. The results of the conducted biogeo-chemical data show that the signs and characteristics of biological absorption of elements in the leaves and fruits of fruit trees are well occurred in the analysis of biological absorption sequences: in apple leaves (Zn,Pb>Cu>Ni>Cr>Co)