Water and Energy Abstracts
  • Year: 2005
  • Volume: 15
  • Issue: 2

195. Applying Various Methods for Assessing Soil and Sediment Redistribution within an Intensively Cultivated Dry Valley Subcatchment

  • Author:
  • Vladimir R. Belyaev, Maxim V. Markelov, Valentin N. Golosov, Yuri R. Belyaev, Elvira V. Tishkina
  • Total Page Count: 2
  • Page Number: 62 to 63

(Sediment Transfer through the Fluvial System – Proceedings of a Symposium held in Moscow, August 2004 – IAHS Publication 288, 2004, pp. 93–103).

Abstract

Four independent methods have been employed to evaluate rates of soil and sediment redistribution during a period of intensive agriculture (about 300 years) for a small catchment (area 0.81 km2) located within the forest zone of the northwestern Russian plain. These included direct soil survey, radionuclide tracers (137Cs and 210Pbex), and USLE-based modeling. Estimates for cultivated slopes vary from 6.4 to 24.2 t ha−1 year−1. Up to 40% of mobilized soil has been re-deposited on arable slopes within the catchment. Aggradation of the dry valley bottom has been estimated at 0.3–0.7 m. The intensity of soil and sediment redistribution is low in comparison with forest-steppe and steppe zones of the Russian plain.

Keywords

Deposition, Modelling, Radionuclide tracers, Small catchment, Soil erosion