DBPapers
DOI: 10.5593/SGEM2014/B23/S11.074

FLOODPLAIN LANDSCAPE MANAGEMENT BASED ON GIS AND REMOTE SENSING DATA. CASE STUDY BUZAU RIVER

G. Tevi, M. Scradeanu, D. Scradeanu
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-12-4 / ISSN 1314-2704, June 19-25, 2014, Book 2, Vol. 3, 581-588 pp

ABSTRACT
One of the most important environmental issues which Romania faces as member of the European area is land management and natural resources exploitation within protected areas. A good example is the Natura 2000 ROSCI0103 Lunca Buzaului (Buzău and Brăila Counties, Romania). This protected area was established with the purpose of conserving habitats and species characteristic of aquatic and riparian ecosystems, in a region with significant anthropic stress generated by alluvial deposits exploitation, waste storage, agricultural activity, and hydro energy producing potential. The need to put such area in value requires an integrated approach, based on the use of GIS and remote sensing data. In this study, the following resources have been used: Pléiades panchromatic and multispectral images at 0.5 and 2 m spatial resolution, orthophotos with a 2.5 m spatial resolution, a digital terrain model (DTM) based on a 30 m network, topographical plans with 1:5000 and 1:10000 scales, thematic vectors for land using – after Corine Land Cover 2006 data sets. The time difference in the acquirement of images, the exploitation of all the aforementioned data, provides the possibility of having a time scale perspective, between 1970 and 2012. The data have been processed using specific software – ArcGis 10.0 for management of spatially referenced data, ENVI EX for remote sensing data processing and RockWorks 12 for geological and hydrogeological data processing. In the next step, processed remote sensing data, correlated with field collected data has led to the following processes:

  • Design of the flooding areas, along Buzău River and an environmental impact assessment associated with different scenarios;
  • Evaluation of actual fluvial erosion processes for the Buzău River system, both under natural state and influenced by the alluvial material extraction activities which are taking place in the area.

From geomorphological point of view, the specificity of this habitat is given by the pronounced dynamic processes and, consequently, by the necessity of efficient land management. The results related to the extension of flooding areas at different flow rates, morphological instability, and the presence of erosional risk sections, have been correlated with land use characteristics (from Corine Land Cover) for the entire studied region. Obtained results: GIS data base, flooding and geomorphological risk maps. All these are useful useful for developing effective management plans in order to achieve conservation objectives for species and habitats, for mitigating environmental impact, and for elaborating a geological resources sustainable exploitation strategy.

Keywords: GIS database, land management, remote sensing data, Natura 2000, flooding risk.

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