ASH CONTENT CHANGES IN NEEDLE, RIND AND WOOD OF THE SCOTCH PINE WITHIN THE ZONE OF A SAND - LIME BRICK PLANT EMISSIONS
The data, characterizing ash content of needle, rind, wood of Scotch pine in accordance with the gradient of environment pollution with air emissions of the Sand -lime brick plant (Republic of Mari El) are given. It is determined that needles have the best indicative capacities in estimation of trees responses to environment pollution, but to make an estimation of chemical composition of dust emissions the best thing is to use cotton cloth.