ASSESSMENT OF THE POSSIBILITIES OF CHERNOBYL ORIGIN CESIUM-137 USE AS AN SOIL NUTRIENTS (MOVABLE PHOSPHORUS) LOSS DUE TO EROSION

http://doi.org/10.24057/2414-9179-2018-1-24-450-461

View or download the article (Rus)

About the Authors

Lyubov N. Trofimetz

Orel State University named after I.S. Turgenev, Faculty of Natural Sciences, Department of Geography,
Komsomolskaya str., 95, 302026, Orel, Russia,
E-mail: trofimetc_l_n@mail.ru

Evgeny A. Panidi

Saint Petersburg State University, Institute of Earth Sciences, Department of Cartography and Geoinformatics,
St. Petersburg, 10th line VO, 33, 199178, Russia,
E-mail: panidi@ya.ru, e.panidi@spbu.ru

Boris I. Kochurov

Institute of Geography RAS,
Staromonetniy per. 29, 119017, Moscow, Russia,
E-mail: camertonmagazin@mail.ru

Taras L. Ivaneha

Center of Chemicalization and Agricultural Radiology “Orlovsky”,
Molodezhnaya str., 7, 302502, Orel, Russia,
E-mail: ivaneha.taras@gmail.com

Anatoly I. Petelko

Novosilskaya ZAGLOS,
Semashko str., 2a, 303035, Mtsensk, Russia,
E-mail: zaglos@mail.ru

Abstract

The paper presents results estimation of quantitative dependences between amount of movable phosphorus and specific activity of cesium-137 (which can be used indicator of the erosion processes intensity in the period since 1986). The mathematical model of the dependencies is based upon the data of topographic survey and soil sampling in the spring of 2016 (200 sampling points were used on the experimental area within the arable slope, in the basin of Suhaya Orlitsa river that is part of the basin of upper Oka river). The very high spatial resolution satellite imagery and maps of morphometric characteristics of the microrelief (produced by means of GIS) allowed to explain the revealed general dependances between the distribution of movable phosphorus, humus and specific activity of cesium-137 in soil material on the slope surface.

The statistically significant dependence between the amount of movable phosphorus and the specific activity of cesium-137 was obtained for a relatively flat watershed surface of the arable slope complicated with elements of polygonal-block microrelief. It was found out that low (due to runoff) values of cesium-137 specific activity correspond to the high amounts of movable phosphorus in the thalwegs of micro streams on the concave part of the southern exposure slope at the down part of the slope. This situation can be explained by the features of the distribution of both movable phosphorus and humus along the soil profile. The second humus horizon replenish the arable horizon in areas of washed out soil (in the thalwegs of streams) with phosphorus of organic origin. This conclusion means that the use of cesium-137 activity in the study of soil runoff impact onto the phosphate status of gray forest soils on the slope agrolandscapes has some limitations in the case of the thalwegs of erosion forms. The final part of the paper concludes that additional research is needed.

Keywords

Ravines, Soil Runoff, Polygonal-block Microrelief, Stream Thalweg, GIS, Satellite Imagery, Chernobyl Origin Cesium-137, Humus, Movable Phosphorus.

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For citation: Trofimetz L.N., Panidi E.A., Kochurov B.I., Ivaneha T.L., Petelko A.I. ASSESSMENT OF THE POSSIBILITIES OF CHERNOBYL ORIGIN CESIUM-137 USE AS AN SOIL NUTRIENTS (MOVABLE PHOSPHORUS) LOSS DUE TO EROSION Proceedings of the International conference “InterCarto. InterGIS”. 2018;24(1):450–461 http://doi.org/10.24057/2414-9179-2018-1-24-450-461