| Name of article: | Nebezpečí povrchového odtoku a následné eroze ve smrkových porostech na prudkém jižním svahu při různých postupech obnovy lesa |
|---|---|
| Number: | 4 |
| Year: | 2010 |
| Author: | František Šach, Vladimír Černohous |
Evaluation of 30-year observations on a long-term research area Česká Čermná in north-eastern Bohemia of the Czech Republic made possible to assess also potentially erosive impacts at using clearcut (H) and shelterwood (C) reproduction methods. The research area is located at the altitude of 460 – 540 m on a steep southward hillslope in the piedmont of the Orlické hory Mts. On logged areas undisturbed by yarding, the reproduction methods did not cause formation of overland flow and “on-site” surface erosion of a forest soil. Nevertheless, the reproduction methods are able to influence subsurface runoff from hillslopes and following “off-site” erosion wash from forest road and drainage network. For determining “off-site” erosion risk the practical procedure of assessing potentially erosive risky hillslope runoff was proposed. Runoff from hillslope potentially off-site erosive determined at open area precipitation sum (S-VP) above 10 mm per week and if the runoff component was greater than 0.1* (S-VP).
