THE MAPPING OF THE PLANT FORMATIONS FROM THE LEFT SIDE OF IZVORU MUNTELUI-BICAZ RESERVOIR
Journal Title: Analele Stiintifice ale Universitatii Alexandru Ioan Cuza din Iasi, Serie noua, Sectiunea II a. Biologie vegetala - Year 2004, Vol 50, Issue 0
Abstract
Land formation mapping is possible, among other methods, through the interpretation of satellite images of a certain area. The studied area (Izvoru Muntelui-Bicaz reservoir left side) was photographed by the Landsat TM5 system on 02-06-1996. The row images were used to create a true colour composite image and a false colour composite images that supplied complementary information. The pixels of the false colour composition image were reclassified according to the reflectance of several standard areas that were selected during a field phytosociological research. The result was a map of the main land cover formation. Further processing of this map allowed the computation of proportions of the land cover formation areas. The best-represented formation is the deciduous forest (32,45%), which is followed in descending order by grassland (20,16%), partly eroded area (17%), water (16,83%), coniferous forest (5,66%), rocky area (4,67%) and buildings (3,24%). The high percentage of the partly eroded areas indicates an important human impact, especially over grasslands. This fact would endorse at least a land usage monitoring. Indirectly, the location of the eroded areas in grasslands outlines the role of the forests in the land protection against erosion. On a long-term scale, this phenomenon may have a harmful effect over life and energetic use of the reservoir through the increase of sediment content in water and, consequently, through the slow decrease. Teledetection allows the localisation of land formations and the assessment of their status and quality.
Authors and Affiliations
OANA ZAMFIRESCU, Ş. ZAMFIRESCU
Keywords
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