High-resolution soil erodibility K-factor estimation using machine learning generated soil dataset and soil pH levels

• Autorzy: Mammadli Nurlan , Gojamanov Magsad

Identyfikatory

DOI

10.24425/gac.2021.136679

• Języki publikacji: EN

Abstrakty

EN

Soil Erodibility Factor (K-factor) is a crucial component of a widely used equation for soil erosion assessment known as the USLE (Universal Soil Loss Equation) or its revised version – RUSLE. It reflects the potential of the soil of being detached due to rainfalls or runoffs. So far, an extensive number of researches provide different approaches and techniques in the evaluation of K-factor. This study applies soil erodibility estimation in the soils of the South Caucasian region using soil data prepared by the International Soil Reference and Information Centre (ISRIC) with 250 m resolution, whereas the recent K-factor estimation implemented in the EU scale was with 500 m resolution. Soil erodibility was assessed using an equation involving soil pH levels. The study utilises Trapesoidal equation of soil data processing and preparation, as suggested by ISRIC, for various layers of surface soil data with up to 0-30 cm depth. Both usage of SoilGrids data and its processing as well as estimation of K-factor applying soil pH levels have demonstrated sufficient capacity and accuracy in soil erodibility assessment. The final output result has revealed the K-factor values varying from 0.037 and more than 0.060 t ha h/MJ mm within the study area.

Słowa kluczowe

EN

soil erodibility; RUSLE; SoilGrids; K factor; soil pH

PL

erozja gleby; Kaukaz Południowy; podatność gleb na erozję

• Wydawca: Komitet Geodezji PAN
• Czasopismo: Geodesy and Cartography
• Rocznik: 2021
• Tom: Vol. 70, no. 1
• Strony: 44--55
• Opis fizyczny: Bibliogr. 22 poz., rys., tab.

Twórcy

autor

Mammadli Nurlan

• Azerbaijan National Academy Sciences, Baku, Azerbaijan

• https://orcid.org/0000-0002-8594-5702

autor

Gojamanov Magsad

• Baku State University, Baku, Azerbaijan

• https://orcid.org/0000-0002-5653-5675

Bibliografia

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