FACTORS OF SOIL SENSITIVITY TO EROSION IN VOLYN REGION

Abstract

Swamp and peat-swamp soils on different rocks and alluvial deposits, lowland peat and peat-swamp
soils and sod carbonate soils mainly on the eluvium of dense carbonate rocks are characterized by the greatest
heterogeneity in terms of sensitivity to wind erosion. The most homogeneous in this respect are mediumdeep
loam black soils, medium-loam podzolic black soil and deep medium-loam black soils. Swamp and
peat-swamp soils on different rocks, lowland peat and peat-swamp soils and sod carbonate soils mainly on
the eluvium of dense carbonate rocks are the least sensitive to wind erosion. The soils of the northern part of
the region, which have a very high content of organic matter, are the least sensitive to wind erosion. Also, a
moderate level of sensitivity to wind erosion is characteristic of the southern part of the region, where soils
have a heavier mechanical composition. The smallest share of the fraction sensitive to wind erosion was
found in the soils of Horokhiv (0.42), Liubeshiv (0.42) and Ivanychiv (0.43) districts. The most homogeneous
conditions in terms of soil sensitivity to erosion as to variation coefficient of the soil fraction content that
may undergo wind erosion are in Lutsk (CV=5.12 %), Horokhiv (CV=6.24 %) and Kivertsiv (6.8 %) districts.
The most heterogeneous conditions according to this criterion are in Liubeshiv (CV=18.18 %), Ratniv
(CV=13.47 %) and Shatsk (11.45%) districts. The highest level of wind erosion is forecasted for the administrative
districts of the region, which are located in the west and north-west. The projected area with virtually
no or little deflation is most characteristic of the south-eastern parts of the region. The ratio between areas
with small and moderate levels of air erosion determines the average level of soil erosion losses in the administrative
district.