Использование данных дистанционного зондирования Земли для анализа влияния городской среды на сезонное развитие древесной растительности

Abstract

The analysis of the peculiarities of the spring development of the oak forest and pine plantations in the city and beyond with the using of visual observations of the development of tree crown, vegetation index NDVI and thermal bands of satellites in the spectral range of 10.4–12.5 microns is carried out. The cloudless images of spacecrafts Sentine l–2, Landsat 7 and Landsat 8 and global digital elevation model Aster GDEM2 were used in the work. It is established that the seasonal development of oak and pine forests in the city is faster than outside it. Urban habitat conditions have a greater impact on the rate of seasonal development of vegetation, than the exposition and steepness of the slope at the sites with approximately equal altitude above sea level. The temperature estimated by the thermal bands does not allow to obtain a complete picture of the average daily differences, including the temperature difference in daytime and nighttime. Nevertheless, this makes it possible to assess the trends in the difference of the thermal conditions of habitats.