ВЛИЯНИЕ ЛЕСОМЕЛИОРАТИВНОГО ОБУСТРОЙСТВА НА ПРОДУКТИВНОСТЬ СЕЛЬСКОХОЗЯЙСТВЕННЫХ УГОДИЙ В УСЛОВИЯХ СУХОСТЕПНОЙ ЗОНЫ

Abstract

Purpose: to assess the state of dry steppe agroforestry landscapes in Volgograd region, to analyze changes in the values of the vegetation index of sown areas in relation to the width of the favorable protective effect of forest plantations to identify the possibility of using Earth remote sensing data to assess the yield of arable land in agroforestry landscapes. Materials and methods. The object of research is agroforestry landscapes of the dry steppe zone. The studies were carried out in Kalachevsky district Volgograd region. The research methods are based on the aerospace survey technique in combination with geoinformation technologies, interpretation and computer modeling in agroforestry landscapes. The analysis of arable land and the impact of protective forest plantations on arable land productivity was carried out using the Normalized Difference Vegetation Index (NDVI). Results. Dynamics of vegetation indices for the period 2017–2019 showed the relationship between the zone of favorable influence of the forest shelter belts and their level of degradation, which affected the state of winter wheat crops grown in the dry steppe zone, namely the NDVI values. The regularity of changes in the vegetation index is monitored when the safety of protective forest plantations changes. It is possible to determine the estimated yield of the field by the regression equations, applying the relationship between the vegetation index and the safety of forest belts, according to their zone of favorable influence. Conclusions: field-protective forest belts with high forest stand preservation form favorable protective conditions in the fields for growing crops at a distance of up to 300 m for the dry-steppe zone of Volgograd region, which is confirmed by high yields in the zone of influence of these forest plantations.