HAPLIC CHERNOZEMS HUMUS CONDITION OF WESTERN BUG AND STYR TERRACED LANDSCAPES
Journal Title: Вісник Львівського університету. Серія географічна - Year 2016, Vol 50, Issue
Abstract
Volyn Upland Haplic Chernozems are distributed mainly on the terrace landscapes of the Western Bug and the Styr and their tributaries (Chornohuzka, Luha, Lypa). Most of these soils are old ploughlands that have experienced various types of degradation. Haplic Chernozems are low-humus soils and they have low storages of humus substance in the 20 cm arable layer and middle storages of humus in 100 cm soil thickness. There is correlation of C humic acids to C fulvic acids within 1.2–3.3 in the humus profile. Among the various fractions of humic substances the 2nd fraction associated to Calcium dominates. A content of “free” humic acids (1rst fraction) is very low and the amount of humin is low. The optical density of humic acids are high and very high. The organic matter of Volyn Upland Haplic Chernozems has some regional peculiarities. First, it caused by topographical conditions of its formation and evolution in the Holocene. Chernozems of the 1st terrace of the River Western Bug are extremely deep. They have progressive-accumulative type of humus distribution in profile, humate type of humus in upper 100 cm layer, a very high degree of organic matter humification and the same content of humic fraction associated to Calcium and low-middle content of 3rd fraction associated to clay minerals. The molecules of humic acids in the humus horizon of Chernozems of the 1rst terrace are better structured that indicates the older age of humus in these soils. Chernozems of the 2nd terrace above the floodplain of the River Styr are middle-deep soils. They are characterised by the regressive-accumulative type of humus distribution in profile, humate-fulvate type of humus and very high degree of organic matter humification only in 25–50 cm layer. The content of fractions associated to Calcium and clay minerals is predominantly high.
Authors and Affiliations
Pavlo Papish, Halyna Ivanyuk, Ihor Papish
Keywords
Related Articles
- EP ID EP315599
- DOI -
- Views 113
- Downloads 0
CONDITIONS AND RESOURCES OF FORMATION AND DEVELOPMENT OF TOURISM ACTIVITY IN CHERNIVTSI REGION AS A CROSS-BORDER REGION: SOCIAL-GEOGRAPHICAL ASSESSMENT AND DIAGNOSTICS
The article identifies the main conditions and resources for the formation and development of tourist activity in Chernivtsi region as a cross-border region. Due to its spatial predisposition, particular attention is pai...
STAGES OF SUSPENDED SOILS FORMATION IN VERKHOVYNA DIVIDING RANGE OF UKRAINIAN CARPATHIANS
It was found out that suspended soils in Verkhovyna Dividing Range in Ukrainian Carpathians are intrazonal ones and are formed near dense sandstones outcrops in Krosnenska zone provided excess moisture of flushing type o...
FEATURES OF THE KINETICS OF DEGRADATION OF DARK GRAY PODZOLIZED SOIL OF LVIV ROZTOCHIA
The kinetics of mechanical, water degradation and deflation of dark gray podzolized soils of Lviv Roztochchya has been investigated. By the equation of the velocity of these processes, their constant of the reaction and...
ETHNIC MAPS OF UKRAINIAN LANDS IN WORKS OF WEST-EUROPEAN SCIENTISTS OF XIX CENTURY
The study examined the development of ideas of the limits of the Ukrainian people settling in connection with the compilation of ethnographical maps of Austrian and Russian monarchies since the 20s of XIX century. The vi...
SOURCE DEGRADATION – GLOBAL ENVIRONMENTAL PROBLEM
On the basis of generalization of literary sources, normative legal, stock materials and experimental data, the complex situation of soil degradation is highlighted. Different types and intensity of the manifestation of...