Improved Methodology for the Analysis of Space Information on the Solar Energy Absorption by Terrestrial Ecosystems

Abstract

The article outlines the satellite images using principles by the solar radiation full spectrum absorption analysing, including both the near and middle infrared ranges, which can currently be used by any land users. Since 1980, American researchers A. Gitelson et al. and P.S. Thenkabail et al. began to use the methodology based on the laboratory spectrometers studying of the plants leaf apparatus area, the water content, as well as for the chlorophyll and other components in plants. Very important result was a wheat rust (Puccinia) remote diagnosis. Since 2010, they began to install the devices on unmanned aerial vehicles, and then on airplanes. In 2015-2017, American researchers, together with Indian scientists, conducted a survey using the above-mentioned technique to separate the annual and perennial field crop sections in several regions of India. German researchers applied the same technique to study the system of wheat fertilizer application. Already in 1980, the Russian scientists at Omsk State Agrarian University substantiated the possibility of studying the abovementioned issues, but using standard satellite imagery. Since 2004, the Russian scientists at Omsk State Agrarian University began to use their sophisticated analysis by image clustering in various natural zones of the Middle Priirtyshye. It was found that the most informative is the mid-infrared range of the solar radiation spectrum. This makes it possible to distinguish the field crops and soil types differences. At the same time, the possibility of the automorphic and hydromorphic agroecosystems state diagnosing was established. Both when used in field crop rotation and in a fall state. The factors were determined of the feasibility and priority of the arable lands redevelopment into arable land.