DBPapers
DOI: 10.5593/SGEM2016/B32/S13.051

THE IMPACT OF CLIMATE CHANGES ON SOIL QUALITY ASSESSMENT IN BAHLUET BASIN, NE ROMANIA

B. Rosca, A. Ursu, R.G. Pirnau, I. Vasiliniuc, G. Pirnau, I. Iordache
Wednesday 7 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-62-9 / ISSN 1314-2704, June 28 - July 6, 2016, Book3 Vol. 2, 385-392 pp

ABSTRACT
Climate changes are today a fact no longer contradicted by academia, showing their negative impacts more and more often. They affect all environmental components directly or indirectly, and with different consequences. Our study approaches a somehow different feature that of the role of these changes in evaluating soil quality in Romania. The climatic indicators used by the Romanian methodology in the evaluation of soil quality and suitability for different types of crops are based on annual average values from meteorological stations for 27 years, from 1961. Using an up-to-date climatic database, some parameters such as temperature and precipitations show quite important changes. In our case, stations from Eastern Romania witness an increase of annual average temperatures with approximately 0.4°C and an increase of precipitation amount from 535 mm (1961 – 1990) to 589 mm (1961 – 2013). These values are valid only for meteorological stations which are not entirely representative for the study area. Thus in this paper we intend to evaluate how these changes are spatially distributed and their impact on soil quality assessment according to the standard methodology for soil survey.
The study area of Bahlueţ basin, located in Moldavian Plateau, NE Romania, was chosen due to availability of soil units, for which soil quality classes where calculated based on standard methodology. For evaluating the temporal and spatial variation of temperatures and precipitation quantities we used the freely available Romanian daily gridded climatic dataset (ROCADA), which covers an interval of 53 years (1961 – 2013). We tested the values of these two variables on a set of over 100 different soil units using the methodology for soil quality evaluation proposed by National Institute for Pedological and Agrochemical Research. Analyzing the results from meteorological stations and the gridded data, important changes in the soil quality scores have been noticed, influenced mainly by the increase of precipitation amount which led in many cases to change in quality classes. As a consequence, our results point out the dire necessity to bring up to date the methodology used in evaluating soil quality, methodology according to which management measures are taken in agricultural practices and European funds are distributed.

Keywords: soil quality, climate changes, precipitations, ROCADA

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