Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2019, Vol. 16, No. 4, pp. 54-62
Analysis of peatland changes in the northeastern part of the Pur-Taz interfluve based on remote sensing and ground monitoring data
R.R. Khairullin
1 , A.V. Khomutov
1, 2, 3 , Yu.A. Dvornikov
1 , E.M. Babkin
1 , E.A. Babkina
1 , D.D. Soshchenko
2 1 Earth Cryosphere Institute, Tyumen Scientific Centre SB RAS, Tyumen, Russia
2 Tyumen State University, Tyumen, Russia
3 Tyumen Industrial University, Tyumen, Russia
Accepted: 02.04.2019
DOI: 10.21046/2070-7401-2019-16-4-54-62
This paper is dedicated to the analysis of 2005 to 2018 relief changes of the peatland in the northeastern part of the Pur-Taz interfluve. The work is performed using satellite imagery and orthophotomaps derived from unmanned aerial vehicle (UAV) surveys. Available research materials, processing of the UAV data for orthophotomap compilation and advantages of the used techniques are briefly described. Detailed statistics on changes of peat polygons area and area of troughs in between ice wedges is provided. The analysis has established nonlinearity of peatland degradation and inter-polygonal depression destruction processes. Despite the absence of data between 2005 and 2016, it is found that the rates of polygonal-wedge ice melting and the subsequent degradation of the peatland strongly differ: the quantitative changes from 2005 to 2016 are almost comparable to the changes from 2016 to 2018. In addition, the data obtained during tacheometric survey are compared with the data obtained during UAV survey. In such studies, UAV survey is considered more effective and accurate due to a number of advantages over conventional tacheometric survey.
Keywords: peatland, polygonal-wedge ice melting, UAV, orthophotomap compilation, remote sensing, tacheometric survey
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