Soil Erosion and Soil Organic Carbon in the Forest-Steppe Zone: A Case Study in Baga Mukhar, West Khentei, Mongolia
- https://doi.org/10.2991/aer.k.211029.002How to use a DOI?
- Cesium-137; forest-steppe; Mongolia; Soil erosion; Soil organic carbon
Specifics and relationships between soil erosion and soil organic carbon in the Mongolian forest-steppe were studied in this research, in a case of Baga Mukhar catchment, west Khentei. Soil erosion was estimated by the Cesium-137 isotope tracing method. For estimation of soil redistribution rates from inventories of 137Cs, diffusion migration model used in grazing lands and mass balance model-2 used in cultivated land. In total, 38 soil samples were taken from 5 isosectors. The mean soil redistribution of the catchment was -3.67 t ha-1 y-1. In cultivated land, soil erosion was the highest with a value of -15.47 t ha-1 y-1 and it gets higher (-24.43 t ha-1 y-1) if we take into account that the cultivated land is located at the bottom of the valley where has deposition. Soil erosion in the south-facing slopes is 5.1 times higher than north-facing slopes, which shows slope differences significantly influence vegetation growth and soil erosion. The average soil organic carbon of the study area is 4.37 %. SOC was highest in the forest area (7.33 %) and the lowest in the agriculture field (2.48 %). SOC in the north facing slope was 2.4 times higher than the south facing slope. Isosectors mean value of soil redistribution and SOC is comparatively well corresponded (r2=0.567). Soil erosion and soil organic loss in agriculture is a significant, it needs more appropriate management practice and soil conservation activities in the Mongolian forest-steppe.
- © 2021 The Authors. Published by Atlantis Press International B.V.
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Cite this article
TY - CONF AU - Batkhishig Ochirbat AU - Telmen Turmunkh PY - 2021 DA - 2021/11/01 TI - Soil Erosion and Soil Organic Carbon in the Forest-Steppe Zone: A Case Study in Baga Mukhar, West Khentei, Mongolia BT - Proceedings of the Environmental Science and Technology International Conference (ESTIC 2021) PB - Atlantis Press SP - 7 EP - 13 SN - 2352-5401 UR - https://doi.org/10.2991/aer.k.211029.002 DO - https://doi.org/10.2991/aer.k.211029.002 ID - Ochirbat2021 ER -