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Farber S. K., Maksyutov Sh. Sh. Mapping of Forest Types Confined to the Lay of Land

Authors:
Keywords:
forest types, forest inventory parameters, relief, mapping, classification of pixels of satellite scenes

Abstract

How to cite: Farber S. K.1, Maksyutov Sh. Sh.2 Mapping of forest types confined to the lay of land // Sibirskij Lesnoj Zurnal (Sib. J. For. Sci.). 2018. N. 2. P. … (in Russian with English abstract).

DOI: 10.15372/SJFS20180204

© Farber S. K., Maksyutov Sh. Sh., 2018

The principles for the formation of forest typological classification and outlines promising areas for development, allowing to solve problems of not only inventory and forest management, but also mapping forest types are discussed in the paper. The analysis is performed by interpreting the concept of «natural regularity» proposed by D. L. Armand (1975). It is shown when the left side of the pattern is a set of indicators of site condition, structure of forest typological constructions will take into account not only the static indicators of the stands, but also their location, the origin and direction of the succession. For relatively similar climatic conditions, the indicators of the lay of land mainly limit the environment of formation of vegetation cover. The method of mapping forest types provides for consideration of site condition and indicators of stands of forest types. Testing is conducted on a test axis West-Sayan forest district, located in the mountains of southern Siberia. Conjugation types of forests, indicators of the topography revealed through the analysis of literary sources and characteristics of forest types accompanying diagnostic table (Smagin et al., 1980). The work is done in a GIS environment using DEM SRTM and Landsat space images. For indexing locations, the inputs are accepted: altitude (gradation 100 m), flat location, slope up to 20° and 20° slopes with northern and southern exposure. Classification of pixels of satellite images is conducted by the method of unsupervised classification separately for each scene, the high-altitude zone and location, which allows increase of the quality of interpretation, because the types of forests are confined to the topography. However completely avoiding mistakes is not possible. The main reasons are an inaccuracy of the DEM and the hit in one class of spectral brightness of different objects of interpretation. The map legend includes characteristics of the terrain, description of the types of forests, including soil and groundwater conditions, and forest inventory parameters.


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