METHOD FOR QUANTITATIVE ASSESSMENT OF EROSION LOSS OF SOIL USING GROUND LASER SCANNER Russian patent published in 2019 - IPC G01N33/24 

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture. Method of quantitative assessment of erosion loss of soil using ground laser scanner is that setting at least three tooling reference points with known coordinates to identify coordinates of location thereof on the terrain and providing repetition of observations or determining said coordinates by surveying-geodetic survey with accuracy of ±1 mm; setting the scanning equipment so that the laser scanner is at the lowest point of the analyzed eroded section; obtained scans are processed, namely, scans made at different time are placed in a single coordinate system, cleaning scans from undesirable objects, for each scan using built-in computer algorithm used in constructing a digital three-dimensional model of relief with grid spacing, equal to scanning step, determining volume V and thickness of layer i of soil loss from erosion (i-) and accumulation (i+) of washed-out material on entire selected section by subtracting different-time digital models of relief using program algorithms supplied with used scanning equipment; method includes calculating soil erosion and accumulation on the analyzed territory, for which a soil erosion and soil accumulation layer is calculated on the area S in millimeters according to the volume of soil washing V and the volume of soil accumulation V+ according to the experimentally derived formulas i-=V-/S×1,000; i+=V+/S×1,000; calculating prevailing erosion process Δi: Δi=(V+-V-/S)×1,000; calculating volume of soil accumulation washing per unit area, obtaining integrated specific index E: E=(V+-V-/S)×10,000.

EFFECT: invention provides, in particular, repeatability of survey, higher efficiency of works and higher accuracy of obtained results.

1 cl, 1 dwg