The impulse-tomography diagnostics of tree trunks in city conditions on the example of fine-leaved linden

Fine-leaved linden (Tilia cordata Mill.) is valua-ble decorative sort for gardening of the cities and settlements, and in particular, finds broad applica-tion in the conditions of Arkhangelsk. The research objective was carrying out diagnostics of trunks of a linden of decay, live fine-leaved linden, by means of the pulse ARBOTOM tomograph of the AT5-P brand (Arbotom, the professional version). Pluses and minuses of this way of diagnostics of trunks were revealed. Researches of a linden in the con-ditions of northern subband of taiga on the example of Arkhangelsk were conducted. For the analysis 13 copies were investigated, various on external signs. Diagnostics of trunks was carried out by means of the pulse ARBOTOM tomograph. It was possible to perform work with it only on live trees. Diagnostics was carried out by means of the sen-sors fixed from outer side of a trunk. The height at which the data on decay availability were obtained, was equal to 1 m. Measured by a measured tape diameter of a trunk, divided into equal sectors and hammered into each part of sector, on each fixed sensors, and made active in the program neces-sary positions for the analysis of achieved informa-tion. The accumulator module was connected to the first sensor, and other sensors were connected consistently with each other by enclosed cables. The program started and easily tapped on each sensor with a hammer. Sensors determined the speed of passing of a sound through a tree di-versely. By the results of these data the model of a wood trunk on wood density was under construc-tion. The information on the condition of a tree ar-rived on the monitor in the form of a color graphic representation. Two-dimensional measurements were taken. It was revealed that among all copies only one posed threat, decay spread for 80 % and it needed to be removed. At all others only the small percent of destruction of wood was noticed, they did not pose threat, but in order to avoid dan-gerous situations it was worth paying attention to them and to carry out the analysis at least once a year.