Bare Surfaces Analysis within Ograzhden Mountain (Bulgarian Part)
Keywords:Ograzhden, Mountain, Bare Surfaces, Environment, Remote Sensing, Bulgarian
The presence of bare surfaces is one of the main indicators for the degradation of natural ecosystems. The spread of bare surfaces and respectively the lack of vegetation cover is a serious threat to the sustainable development of complex environments such as mountains. The present study focuses on the spatial-temporal relationships of the bare surfaces with the local environment within the Bulgarian part of the small border mountain of Ograzhden. Based on temporal imageries from the Landsat 8 satellite, an analysis of the spatial distribution and tendencies in the development of bare surfaces has been made over a two-year period of time. Overall, the results of the research show a reduction in the total area of bare surfaces on the one hand and a slow environmental recovery on the other. Unfortunately, the positive changes are not ubiquitous, but describe only certain areas of the territory of interest.
Kaab, A. (2005) Remote Sensing of Mountain Environments. UNESCO publications: Proceedings Second and Third GLOCHAMORE Workshop, 92-99.
Campbell, J.B. (2002) Introduction to Remote Sensing. Third edition, London: Taylor and Francis.
Nikolov, V., Yordanova, M. and Boteva, I. (2013) Mountains in Bulgaria. Third edition, Sofia: “Prof. Marin Drinov” Academic Press (in Bulgarian)
Da Cunha Frutuoso, R.M. (2015) Mapping hydrothermal gold mineralization using Landsat 8 data. A case study in Chaves license, Portugal. Porto: University of Porto, 85p.
Wen, C.Y. and Chen, J.K. (2004) Multi-resolution image fusion technique and its application in forensic science Forensic Science International, 140, 217-232.
He, C., Shi, P., Xie, D., and Zhao, Y. (2010) Improving the normalized difference built-up index to map urban built-up areas using a semiautomatic segmentation approach. Remote Sensing Letters, 1, 213–221.
Rubin, J. (1967) Optimal Classification into Groups: An Approach for Solving the Taxonomy Problem. Journal of Theoretical Biology, 15, 103-144.
Conrad, O., Bechtel, B., Bock, M., Dietrich, H., Fischer, E., Gerlitz, L., Wehberg, J., Wichmann, V. and Boehner, J. (2015) System for Automated Geoscientific Analyses (SAGA) v. 2.1.4. Geosci. Model Dev., 8, 1991-2007, doi:10.5194/gmd-8-1991-201