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TRANSFORMATION OF OPEN SOIL SURFACE UNDER THE IMPACT OF RAINFALL IN MODEL EXPERIMENT

https://doi.org/10.19047/0136-1694-2018-95-23-40

Abstract

During the model experiment we exposed samples from surface layer of leached chernozem, grey forest and soddy-podzolic soils to study the impact of raindrop action on their surface. According to our results, surface of leached chernozem and grey forest soil transformed similarly forming the crust separated by the cracks. The crust consisted of light (washed silt fraction) and dark (compacted fine material) areas. As for the soddy-podzilic soil, we observed surface accumulation of sand and washed mineral grains. Surface image classification showed that cracks generally tended to increase in area during the surface drying. However, leached chernozem cracked quicker and heavier compared to grey forest soil. In addition, the proportion between light and dark areas of the crust for these two types of soil changed differently as well. In conditions of different transformation cycles divided by heavy rainfalls, the changes of cracks position and the increase of light crust area was observed, while dark area moved to the cracks. Such spatial rearrangement resulted in the increase of average reflectance in RGB channels. The inequality between reflectance in different channels increased as well. During the experiment significant surface lightening occurred. It mainly affected the light area of crust and led to significant rise in reflectance in red channel.

About the Authors

G. V. Vindeker
V.V. Dokuchaev Soil Science Institute Lomonosov Moscow State University
Russian Federation

V.V. Dokuchaev Soil Science Institute, Russia, 119017, Moscow, Pizhevski per., 7, build. 2
Lomonosov Moscow State University, Russia, 119991, Moscow, Leninskie Gory, 1



E. Yu. Prudnikova
V.V. Dokuchaev Soil Science Institute Peoples' Friendship University of Russia
Russian Federation

V.V. Dokuchaev Soil Science Institute, Russia, 119017, Moscow, Pizhevski per., 7, build. 2
Peoples' Friendship University of Russia, Russia,117198, Moscow, Miklukho-Maklaya str., 6



I. Yu. Savin
V.V. Dokuchaev Soil Science Institute Peoples' Friendship University of Russia
Russian Federation

V.V. Dokuchaev Soil Science Institute, Russia, 119017, Moscow, Pizhevski per., 7, build. 2
Peoples' Friendship University of Russia, Russia,117198, Moscow, Miklukho-Maklaya str., 6



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For citations:


Vindeker G.V., Prudnikova E.Yu., Savin I.Yu. TRANSFORMATION OF OPEN SOIL SURFACE UNDER THE IMPACT OF RAINFALL IN MODEL EXPERIMENT. Dokuchaev Soil Bulletin. 2018;(95):23-40. (In Russ.) https://doi.org/10.19047/0136-1694-2018-95-23-40

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ISSN 0136-1694 (Print)
ISSN 2312-4202 (Online)