Runoff and Soil Erosion Assessment on Forest Roads Using a Small Scale Rainfall Simulator
AbstractForestry operations can significantly alter hydrological and erosional processes in a catchment. In the course of developing timberland, a network of persistent roads and skid trails causing soil compaction is usually established. Hereby, the infiltration rate of the soil is distinctly reduced, which leads to the generation of overland flow—this may also cause soil erosion. In this study, a small-scale rainfall simulator is used to investigate hydrological and erosional processes on forest roads and skid trails. The results show increased runoff rates on forest roads, up to 25 times higher than on undisturbed forest topsoil. On skid trails, the runoff rates were altered especially in rutted areas (16 times higher) while unrutted parts showed a lesser change (four times higher). With sufficient overland flow, soil erosion rates also rose, particularly when the vegetation cover of the surface was removed: bare road surfaces featured higher mean erosion rates (195 g·m−2) than partly or completely vegetated skid trails (13 g·m−2) and undisturbed sites (5 g·m−2). The findings presented in this study indicate the need for the use of compaction reducing technology during forestry operations and a revegetation of road surfaces in order to minimize the detrimental factor of roads and skid trails on water retention and soil conservation. View Full-Text
Share & Cite This Article
Zemke, J.J. Runoff and Soil Erosion Assessment on Forest Roads Using a Small Scale Rainfall Simulator. Hydrology 2016, 3, 25.
Zemke JJ. Runoff and Soil Erosion Assessment on Forest Roads Using a Small Scale Rainfall Simulator. Hydrology. 2016; 3(3):25.Chicago/Turabian Style
Zemke, Julian J. 2016. "Runoff and Soil Erosion Assessment on Forest Roads Using a Small Scale Rainfall Simulator." Hydrology 3, no. 3: 25.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.