Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2014, Vol. 11, No. 1, pp. 30-42
The use of satellite research methods in monitoring the state of forest communities in the area of industrial emissions
M.I. Vasilevich
1 , V.V. Elsakov
1 , V.M. Shchanov
1 1 Institute of Biology, Komi Science Centre, Ural Division RAS, Syktyvkar, Russia
The paper demonstrates the possibilities to use satellite imagery to assess changes in the state of vegetable plant communities in the area affected by emissions from the Syktyvkar Pulp and Paper Enterprise (SPPE). A classification of vegetation types is performed and the contribution of each class is assessed. The accuracy of the classification is verified based on field control points. A significant share of the territory is occupied by secondary deciduous forests (15,9 %), which is associated with high development of the territory. NDVI changes are calculated to assess biomass and crown density for the period of 1986–2013. A downward trend in NDVI index averaging 0,2 % per year for the past 24 years is revealed. Analysis of crown density changes during the study period shows that the average reduction in crown closeness in control areas for the entire period from 1986 to 2013 is 15 %. The largest decrease in closeness is observed mainly in spruce and pine wetland plant communities, worst affected by the emissions. The impact of the emissions of the enterprise extends to a distance of 15 km from the main source of emissions along the prevailing wind rose direction.
Keywords: remote sensing data, monitoring of plant phytocenoses, the impact of emissions
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