Open AccessExperimental measurements of deflation in steppe landscapes of Priol’khonie (Lake Baikal region)
Author(s) -
S. V. Solodyankina,
Yu. V. Vanteeva,
T. I. Znamenskaya,
M. Yu. Opekunova
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/629/1/012002
Subject(s) - silt , environmental science , vegetation (pathology) , steppe , soil water , soil science , hydrology (agriculture) , soil texture , physical geography , atmospheric sciences , ecology , geology , geography , geomorphology , biology , medicine , geotechnical engineering , pathology
The quantitative value of the deflation processes in the steppe landscapes of Priolkhonie was obtained during field experimental studies in the summer seasons of 2017-2019 years. The quantity and properties of the transported particles were determined and statistical analysis of factors (parameters of test sites and weather conditions) affecting the erosion advancing was identified. The measurements were made with a set of dust traps at different heights from the surface, as well as a particle counter and a digital thermo-anemometer. Also, we surveyed the size (fractions) of trapped particles as well as soil samples from the upper soil horizon at the test sites. A comparative analysis of the native and transformed landscapes is carried out. According to results of multiple regression analysis, the main landscape factors that positively affect the deflation are: the quantitative ratio of the fractions of the granulometric composition of the upper horizon of the soil (the positive relationship with silt and dust content is most often expressed) and the steepness of the slope, and the negative relationship is most pronounced with rockiness soil and a projective cover of herbaceous vegetation. We found out that the development of deflation processes in the study area is primarily due to natural factors (features of the soil cover) and increases with anthropogenic impact, which affects the state of the vegetation cover and the particle-size composition of soils.