Production potential of the soil in sessile oak coppice forests

The soils in sessile oak forests were studied at three localities in the region of Northeast Serbia. Brownised dystrict humus-siliceous soil was studied on gneiss in M.U. "Zlatica" - N.P. "Đerdap", in the forest of sessile oak with fescue grass (Quercetum montanum subass. festucetosum heterophyllae). Dystric acid brown soil on gneiss was studied in the region of F.E. "Severni Kučaj", M.U. "Ravna Reka", in the community of sessile oak and hornbeam (Querco-Carpinetum moesiacum), and in the region of the Teaching Base "Majdanpečka Domena" in M.U. "Crna Reka - Pek", in the forest of sessile oak with hairy sedge (Quercetum montanum subass. caricetosum pilosae) on schist's. Eutric brown soil was studied on amphibolite schist and on basic and neutral eruptive rocks in the region of N.P. "Đerdap", in M.U. "Zlatica", in the typical sessile oak forest (Quercetum montanum subass. tipicum)

Rendzinas in the community of beech, fir and spruce with Scots pine in NP 'Tara'

The rendzinas were studied in the community of beech, fir and spruce with Scots pine (Piceo-Fago-Abietetum subass. pinetosum silvestris), at the altitudes above 1,000 m, on steep slopes and warm aspects. The genesis and properties of these rendzinas were strongly affected by chemical composition, mineralogical structure and bedrock weathering. Soft limestones, which are characterized by low hardness and a higher content of insoluble residue, present the major impact on the physical and chemical characteristics of rendzinas. The presence of active carbonates in the profile causes a neutral to weak alkaline reaction, provides the constant buffering of organic acids and the formation of Ca-humates, and in this way also the formation of a stable organic-mineral complex, which in turn results in the formation of stable grainy soil structure

Properties and productive potential of dystric brown soil on red sandstone in beech forests of "Cestobrodica"

Dystric brown soils were studied in the mountain forest of beech (Fagetum moesiacae montanum, Jov. 1976) in the area of the Management Unit "Čestobrodica". The soil study was carried out on three series of sample plots. The soils are formed on red sandstones, and the characteristics and the way of the substrate weathering has a decisive effect on the soil characteristics

Genesis and characteristics of the soil in A-R stage in forest ecosystems of NP 'Tara'

Different types of soil in A-R stage formed on limestone and serpentinite in forest ecosystems in NP 'Tara' were researched. Based on the specific effect of limestone on the soil genesis and evolution, two types of calcareous limestone bedrocks were distinguished: dense limestones, and soft, marly limestones. Three subtypes of black earth were studied on dense limestones. They are: organogenic, organo-mineral and brownised soils. One soil type was researched on soft, marly limestones: rendzina, the leached variety. One soil type was researched on serpentinites, within the A-R stage: humus-siliceous soil (ranker), subtype eutric ranker. This paper also presents the evaluation of ecological and productive characteristics of the study soils. If the soil is observed separately, regardless of the tree species growing on it, the soils in A-R stage in NP 'Tara' cannot be evaluated as highly productive. However, in all plant communities on the soils in A-R stage on limestone, the values of average volume, current volume increment, and basal area were high. The unfavourable physical characteristics of the soil in the area of NP 'Tara' are compensated by the effect of humid climate. On the study eutric humus siliceous soils in the area of NP 'Tara', in the natural and artificially established stands of Scots pine and Austrian pine, the ecological and productive value is conditioned by numerous factors and it is mainly limited by unfavourable physical characteristics. Regardless of the unfavourable ecological and productive characteristics of the soil, the natural and artificially established stands of Scots pine and Austrian pine are in the coeno-ecological optimum

Assessment of production potential of podzolised and typical acid brown soils in some forest types in the area of Veliki Jastrebac

The characteristics of podzolised and typical acid brown soils were studied in beech forests in Management Unit “Lomnička Reka“ on Veliki Jastrebac. Also, their production potential was evaluated based on their physico-chemical properties. As productivity is a realised value of the soil fertility, realized through the yield and increment, the site productive capacity was evaluated based on mean maximal heights. The correlation analysis shows the extent to which the characteristics of podzolised and typical acid brown soils affect the mean maximal heights