Integrated Assessment of Forest Genetic Reserves of the Sverdlovsk Region by the Methods of Remote and Ground Survey

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116 581.524:502.55:630*

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DOI: 10.17238/issn0536-1036.2017.1.104

Abstract

In order to preserve the genetic resources of the main forest-forming species 111 forest ge-netic reserves (FGR) were allocated in the Sverdlovsk region in 1983–1984. The satellite images analysis of FGR and a ground survey of 15 of them were carried out to assess the current state of those protected areas. Using the satellite images and the developed specialized scales we defined the proportion of the anthropogenic disturbed FGR territory, the treeless buffer zones around reserves, and the compatibility of the GPS-tags boundary allocation sys-tem of FGR with the problems of its practical use. The analysis revealed the following degrees of FGR disturbance: 54 FGR had more than 20 % of the disturbed area; 25 – 10…20 %; 6 – 5…10 %; 21 – 0…5 %. We did not obtain data of 5 reserves. All of 111 FGR did not have proper treeless buffer zones. Only 30 FGR had a treeless zone along the borders. The rest of them were surrounded by the forestland. Forest measurement data of the stands indicated a high rate of silvicultural parameters of plantations. The sanitary state of the stands was also observed: 11 FGR were slightly damaged, 4 FGR were not damaged. The average vital index of trees of all examined FGR was 2.2; defoliation (thinning of the crown) was up to 27 %; dehromation (or needles yellowing) was 9 %. The comprehensive approach to the FGR state assessment, combining the methods of remote and ground silvicultural and taxation survey of the stands significantly increased the objectivity of the received information. This approach is promising for the development of the monitoring system of existing FGR, as well as for the creation of new reserves in the Russian Federation. The specific measures for conserva-tion and improvement of the surveyed areas are proposed.

Authors

S.A. Shavnin, Doctor of Biological Sciences, Professor, Senior Research Scientist V.A. Lebedev, Research Assistant V.A. Galako, Candidate of Agricultural Sciences, Senior Research Officer V.E. Vlasenko, Candidate of Biological Sciences, Senior Research Officer

Affiliation

Botanical Garden of the Ural Branch of the Russian Academy of Sciences, ul. 8 Marta, 202A, Yekaterinburg, 620144, Russian Federation; e-mail: common@botgard.uran.ru

Keywords

genetic reserve, silvicultural and taxation assessment of pine plantations, satellite image analysis, remote sensing method

For citation

Shavnin S.A., Lebedev V.A., Galako V.A., Vlasenko V.E. Integrated Assessment of Forest Genetic Reserves of the Sverdlovsk Region by the Methods of Remote and Ground Survey. Lesnoy zhurnal [Forestry journal], 2017, no. 1, pp. 104–118. DOI: 10.17238/issn0536-1036.2017.1.104

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Received on January 18, 2016