Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XIV
Written by Nadezhda SHOPOVA, Desislava SLAVCHEVA-SIRAKOVA
In these papers, the bioclimatic index de Martonne was used to assess the hydrothermal conditions in some agricultural areas in Southern Romania and Northern Bulgaria during the period 1961-2020. The conditions from October to June were analyzed in view of the cultivation of winter cereals, as well as those from April to October, marking the time for growing spring crops. Additionally, indices were selected during some critical periods for both types of crops. The evaluation of the indices with the Mann-Kendall test and the Sen slope shows a significant (0.01) negative trend or an increase in the degree of unfavorability for growing winter crops in the Danube Plain. The indices during the period for growing rain fed spring crops 1961-2020 also show a negative, but insignificant trend.
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