DEVELOPMENT THE STEM VOLUME TABLES OF PINE FOR URBAN CONDITIONS
At the first time the stem volume tables of scots pine are developed trees that are part in different categories green infrastructure of the Yekaterinburg. Input data for the tables were collected using non-invasive Field-Map software and hardware measurement system. The development three-entry volume tables including the following parameters: diameter at breast height, height and q2 form quotient. They are more appropriate for urban environments. The range of changes of q2 form quotient for pine trees is quite wide from 0,503 to 0,850. According to experimental data, the q2 form quotient varies from 0,74 to 0,86 in non-tapered, from 0,62 to 0,74 in medium-tapered, and from 0,50 to 0,62 in tapered stems. According to this scale, 72 % of all accounting trees are characterized as medium-tapered, 18 % are as tapered stems, and 10 % are as non-tapered. The development was carried out using a statistical procedure of multiple regression analysis. The determining factors taken for analysis: diameter, height, and the q2 form quotient explain the volume variability by more than 97 %. The proposed equation for determining the volume of stem gives acceptable results: systematic error being+0.21 % and root-mean-square error being ±9,54 %. The average error calculated for 95 accounting trees was equal to ±0,07 %. The developed three-way volume tables for Scots pine trees growing in urban conditionscan be successfully applied in production.