Article

Article name ASSESSMENT OF THE POST-FIRE FOREST RESTORATION DYNAMICS IN THE OLEKMINSKY STATE NATURE RESERVE (RUSSIA) ACCORDING TO DATA OF LANDSAT SATELLITE IMAGES
Authors

Yuri F. Rozhkov,
Maria Yu. Kondakova

Reference to article

Rozhkov Yu.F., Kondakova M.Yu. 2019. Assessment of the post-fire forest restoration dynamics in the Olekminsky State Nature Reserve (Russia) according to data of Landsat satellite images. Nature Conservation Research 4(Suppl.1). https://dx.doi.org/10.24189/ncr.2019.014

Section Resarch articles
DOI https://dx.doi.org/10.24189/ncr.2019.014
Abstract

The use of time series of satellite images allows us to trace the dynamics in the processes of reforestation and forest formation. We estimated the use of the results of cluster analysis of the pixel distribution in the monitoring of post-fire forest restoration. We processed multispectral mid-resolution satellite images (and their fragments) of Landsat 8, Landsat TM/ЕТМ+, Landsat MSS taken in 1973–2016 using the following cluster analysis tools: unmanaged ISODATA classification and thematic difference. The thematic difference was calculated between the results of classifying data into two, four, six, and ten classes. We demonstrated that the post-fire forest restoration takes place in different burned areas with different wildfire intensity. It also depends on the proportion of post-fire wastelands. For example, greater areas of post-fire disturbance have been noted in conditions of a larger proportion of post-fire wastelands. In severely fire-damaged areas, the post-fire vegetation restoration was more intense than in slightly fire-damaged. We calculated the index characterising the forest cover in burned areas. We demonstrated its increase over the time. We considered the relationship between the change in the index characterising the forest cover over the time and the thematic difference of pixels.

Keywords

index characterising the forest cover, Isodata classification, satellite image interpretation, thematic difference, reforestation process

Artice information

Received: 09.07.2018. Revised: 07.02.2019. Accepted: 21.02.2019.

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References

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