Abstract

Vagif E. Aiyev

While afforestation is relevant in the study of the ecological state of forest soil, analyses of the soil samples
and valuation of the soil types to obtain final yield class is important. Within the National State Afforestation
Program, as the research object, the south-east slope of the big Caucasus has been chosen for checking up
soils under woodland and woodless areas. After having taken soil samples in this zone, these samples were
analyzed and the amount of humus, nitrogen, phosphorus and absorbed matters sum (AMS) have been
determined for a hectare (t/ha). Formula (1) was applied to determine the soil fertility factor and mechanical
composition quantity (t/ha). By the traditional soil valuation method, proposed by an academician, G. Sh.
Mammadov, in comparison with the selected etalon soil type, other soil valuations were given by points.
Formula (2) was used to obtain the final points of the soil type and subtypes: 1) The total amounts (t/ha) of
the soil types and subtypes which were determined based on formula (1). As summary of the ecological
estimation, the final main yield class points of soils was established due to calculation by formula (2) for all
soil type and subtypes under woodland and woodless areas in Shamakhi region, situated in the very natural
zone. The results obtained from the experiments and calculations, showed the present ecological state of
the woodland and woodless soils, their fertility factor and mechanical composition.