DBPapers
DOI: 10.5593/SGEM2016/B23/S11.075

USE OF GIS TECHNIQUES IN INVESTIGATING THE LANDS SUITABLE FOR SEWAGE SLUDGE APPLICATION

R. Mudura, V. Stan, D. Mihai, N. Sarbu
Friday 9 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-60-5 / ISSN 1314-2704, June 28 - July 6, 2016, Book2 Vol. 3, 591-598 pp

ABSTRACT
To draw the national maps showing the pH distribution and degree of soil heavy metal load, I used the data included in "The soil monitoring system in Romania" conducted by ICPA – the Research Institute for Soil Science and Agro chemistry of Bucharest. The data interpolation in the 16x16 km grid at national level resulted in thematic maps representing the pH distribution and soil heavy metal concentrations according to applicable guidelines on permissible limits for sludge use on agricultural land. I also drew a zoning map to highlight the areas with slope gradients lower than 5%. For this purpose, I used the digital model SRTM (Shuttle Radar Topography Mission) of the terrain with a resolution of 90 m, produced by NASA. I also used other layers of information, as follows: land use map from which I extracted agricultural areas, a map of the irrigation systems in Romania, and a soil map. The intersection of all layers of information revealed the suitability of the irrigation-improved lands for the use of the sludge resulted from wastewater treatment.

Keywords: GIS, sludge, waste, arable land, irrigated areas


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