GIS-technologies application for calculation of potential soil loss of Marha River basin (Republic of Saha)

3rd International Conference Environment and Sustainable Development of Territories: Ecological Challenges of the 21st Century

生态环境科学;地球科学;经济学

Shynbergenov, Y.^1 ; Maltsev, K.^1 ; Sihanova, N.^1

Institute of Environmental Sciences, Kazan Federal University, Kremlevskaya str., 18, Kazan

420008, Russia^1

关键词: Digital elevation model;    Erosion potentials;    Estimation methods;    Geographic information;    Land-cover types;    Quantitative level;    Remote sensing data;    Slope steepness;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/107/1/012023/pdf
DOI  :  10.1088/1755-1315/107/1/012023

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In the article the presentation of estimation methods of potential soil loss in the conditions of Siberia with application of geographical information systems is resulted. For the reference area of the Marha river basin, which is a part of the Lena river catchment, there was created a specialized geographic information database of potential soil erosion, with scale of 1: 1,000,000. Digital elevation model "GMTED2010" and the hydroset layer corresponding to the scale of 1: 1,000,000 are taken to calculate the soil loss values. The formation of the geobase data is considered in detail being constructed on the basis of the multiplicative structure which reflects the main parameters of the relief (slope steepness, exposition, slope length, erosion potential of the relief), soil, climatic characteristics and modern types of land cover. At the quantitative level with sufficiently high degree of spatial detail results were obtained for calculating the potential erosion of soils. The average value of potential soil loss in the basin without taking into account the factor of land cover types, was 12.6 t/ha/yr. The calculations carried out, taking into account the types of land cover obtained from remote sensing data from outer space resulted in an appreciable reduction of the soil loss values (0.04 t/ha/yr.).