The quantity and quality of yield is determined by the soil quality. The agriculture is one of the main human activities that affect soil quality. In Dolj, the agriculture occupies an important place in the economy of the County. The main soils found in DoljCounty were Chernozems and Luvisols. Several indicators are used to quantify the physical quality of the soil. To assess soil physical quality, disturbed samples from each pedogenetic horizon were collected to analyse: particle size distribution, soil organic content, dispersion and macrohydrostability. Undisturbed samples were also collected (by using a core sampler), for: bulk density, total porosity, saturated hydraulic conductivity, resistance to penetration determination. The degree of compaction, the packing density, the structural stability index as well as the structural instability index were obtained by calculation.  The results showed that according to the degree of compaction values, both studied Luvisols (except ArenicLuvisols), and HyposodicCalcaro-calcic Chernozems and Haplic Chernozems with fine texture were severely compacted and required loosening works. Most of the studied horizons of Luvisols had low – extremely low permeability. With a few exceptions, the values of the resistance to penetration were medium. The HyposodicCalcaro-calcic Chernozems shows the highest values of structural instability index.

To emphasize the microbiological activity in a polluted soil, the microbiologicalindicators (the number of bacteria; the number of fungi; and the soil respiration) had been analyzed, both from the qualitative and the qualitative point of view. The researches had been performed in Patranjeni area, in ApuseniMountains on a slope of the AmpoiValley. The soil is AlosolRodicanthropic polluted (with dioxide and trioxide sulphur emissions). The results showed that total counts of bacteria showed very low (220 x 106 viable cells x g-1d.s.) to medium (1270 x 106 viable cells x g-1d.s.) viable cells in the plant root active layer, while the fungi total counts showed a very low number in all the pedogenetic horizons (ranging between 2.40 x 103cfus x g-1d.s. and 3.70 x 103cfus x g-1d.s.). The global indicator of the soil microbiological activity is soil respiration, to which data pointed out low activity (64.20 mg CO2 x g-1d.s.) in the soil profile, except the top horizon, where the activity is medium (11.3 – 11.4 mg CO2 x g-1d.s.). The results of the taxonomic identification showed for bacteria the dominance of Baccilus and Pseudomonas, while for fungi, the dominance of Penicillium, Aspergillus, and Fusarium.

The rational and efficient management of land resources, in the frame of a sustainable agriculture and environment protection, have to be based on the operational, and at the same time, more detailed and accurate knowledge of soil resources. This knowledge is based on soil information obtained by carrying out soil surveys and field research, and by laboratory measurements of main soil physical and chemical parameters. Thus, the basic soil information, consisting primarily of data on soil profiles representative of the study areas is obtained. The objective of this paper is to develop several applications for coupling georeferenced data from Geographic Information System of Soil Resources SIGSTAR-200 with the information of soil profiles from the Soil Quality Monitoring Network 8 km x 8 km. The spatial distribution of existing soil profiles, as well as the distribution of soil types have been studied, and their representativeness is determined. IT applications have been developed to highlight the number of profiles consistent with the polygons containing them, or with the neighbouring polygons. The soil areas that are described by a profile from the soil profiles database (having a profile which is located inside the polygon) are also established.

The sandy soils are sensitive ecosystems, being in a precarious equilibrium with the pedolandscape conditions, any changes could bring drastically modifications into the soil environment. The researches had been performed in Suceava Tableland, in Stephan the Great area, on a Luvosol albic-psamic, lamelar. The researches in the paper focused on the upper part of the argic horizon, on Bt1 sub-horizon characteristics at macro- and microscopic scale. In this respect, at the macro-morphological level, the Bt1 sub-horizon is composed of a sequence of thick lamellae (3–5 cm) separated by the inter-lamellar spaces. The granulometric analysis showed that the lamellae had a medium loamy texture, while the inter-lamellar spaces had coarse granulometric composition. At micromorphological level, the image emphasized, in the lamellae, the presence of the clayey±Fe±humiccoating the mineral grains and clogging part of the inter-granular spaces. The results of the microbiological investigation showed a concentration of the microorganisms into the lamellae, while in the inter-lamellar spaces, their development has been scarce. The total counts of bacteria and fungi registered low number (16.81 x 106 viable cells x g-1d.s. and 1.026 x 103cfus x g-1d.s., respectively). Despite of these results, the data of the global indicator of the soil microbiological activity, the soil respiration respectively, attend high level of activity (31.357 mg CO2 x g-1d.s.). The researches pointed out that the sandy soil is a very sensitive environment for the soil life, but the presence of the clayey±Fe lamellae proved to be a hospitable habitat.

The objectives of the paper had been to evaluate the level at which weathering, as the main process active in the studied soil, proceed to modelling the soil vital environment. The researches had been performed in Patranjeni area, located in The ApuseniMountains, on an AlosolRodic. The results pointed out that on the general background of an extremely anthropic polluted and acid soil (pH below 4.5), the micromorphological observation (on the oriented thin sections) had been reveal an intense weathered process of the skeleton grains (composed of greenish grey sandstones). Consequently, the soil matrix had been in situ enriched with large amounts of weathered products which kept the soil in a state of youth and gives mainly to the Bt2horizon the characteristics of a layer known as „alteration bed‟. The analytical data showed an extremely high level of total Fe, ranging between 14712 ppm and 23759 ppm, whereas the total Mn values are lower and ranged from 176 ppm to 743 ppm. The acidification directly influenced the soil life environment, by increasing: the weathering of the skeleton grains, the soil matrix debazification and the organic matter oxidation. In addition, the soil ecosystem being affected, the soil inhabitants (from macro- to micro-scale) had been also affected. On the other hand, the soil vital environment had been modelled mainly by the weathering that locally buffered the highly acidity and created a vital environment for the soil life.