ВПЛИВ МОРФОМЕТРИЧНИХ ПАРАМЕТРІВ РЕЛЬЄФУ НА ПЛОЩУ ПОВЕРХНІ ЗЕМЕЛЬНИХ ДІЛЯНОК ЛІСОГОСПОДАРСЬКОГО ПРИЗНАЧЕННЯ

Abstract

A plot of land is characterized by the following main attributes: purpose, location and turning points coordinates, regulatory monetary value and area. The exact value of the plot area is required for keeping land data and entering informationinto the State Land Cadastre; as well as to determine the real amount of land tax or rent. For forest and agricultural lands, the area also determines the amount of cultivation and the obtained products.Based on the analysis of literature sources, the established goal was to check the possibility of using Earth remote sensing data to generate digital relief models of plots in order to estimate their area. An important task was to establish the quantitative difference between the surface area of the land plot and the area of its horizontal projection using the example of large forested parcels. Five sites were selected for research, which are located in the Volyn, Lviv and Ivano-Frankivsk regions of Ukraine. Using Google Earth, Global Mapper, and Surfer software, digital relief models of the objects were generated and visualized. At the next stage, the main relief parameters of the sites, as well as the values of the areas of their surfaces, were determined. It was established that for the specified land plots, the physical surface area is larger than the area of its horizontal projection by 1.15-87.83 hectares or from 0.1 to 7.7 %.Therefore, the surface area depends on the morphometric parameters of the relief, namely the steepness and its roughness. For large parcels of agricultural and forestry purposes, it is recommended to take into account the area of their surfaces; to enter it as a separate parameter in the land cadastre. To increase the accuracy of the surface area calculation, it is necessaryto use a digital terrain model with a smaller grid step. To generate such DEMs, we can use aerial photography materials.