THE NATURAL FRAMEWORK FOR THE FORMATION AND CHARACTERIZATION OF THE SOILS OF DIOSTI COMMUNE, DOLJ COUNTY

Authors

  • C. POPESCU

Abstract

 

The investigated territory is located in the S-E part of Dolj County. It has a climate slightly influenced by Mediterranean clime. It is located entirely in the Leu – Rotunda Field, an integrated part of the eastern division of the Oltenia Plain, namely, of its northern subdivision. Within the field, a series of micro-depressions and even depressions are identified, which gives it a slightly wavy appearance. It belongs to the river basin of Olt and Jiu, all the valleys specific to the relief of the area gravitate towards these rivers. Regarding the depth of the groundwater, it is varied in the territory of the commune Diosti. In the northern part it is deeper than 8-15 m and, as such, does not influence the genetic nature of the soil, on the slopes that fall into the deep valleys of the plain it appears at the depth of 10-15 m, on the thread of valleys below 1-2 m, at the base to the slopes the depth is about 6-8 m and to the south, the groundwater is at 2.5-4 m, a situation in which the hydromorphisms characterizes the soils of the area (gleysation, groundwater influence ). The bedrock on which the soils were formed is loessy, deluvial - proluvial clay and clay, which, under the influence of the climate, in some cases, has reddish and yellowish chromes. From the geobotanical point of view, the territory of Diosti commune is within the area of oak forests, in contact with the sylvosteppe. The processes of genesis and evolution of soils within the researched territory took place through the interaction, of time, of pedogenetic factors (climate, relief, hydrography, hydrology, rock, vegetation) as well as through human interaction. In this territory, the following large groups of soils have been identified: cambic chernozem, argic chernozem, red preluvosoils, alluviosoils. The cambic cernoziom and clayey cernoziom were formed mainly in the southern part of the researched territory, especially in the area of Diosti commune. The reddish preluvosols were identified in the area of Radomir locality and the thread of valleys and on the more depressive forms but with wide plains forms were formed alluviosols.

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Published

2019-12-27