The potential of grass strips for retaining surface runoff and sediment
The use of grass strips in agricultural landscapes is widely recognized for their ability to effectively reduce surface runoff and the transport of eroded particles, while simultaneously enhancing biodiversity and landscape stability. This study aimed to quantify the impact of grass strip length on sediment retention in surface runoff. Experimental measurements were conducted on enclosed plots measuring 8 × 1 metres, each with varying proportions of grass cover to simulate different grass strip widths under real-world conditions.
Mini-JET device as a tool for determination of soil erodibility characteristics
The article describes a method for determining the erodibility of incohesive agricultural soils by means of the critical shear stress measuring. The “Jet Erosion Test” (JET) was used to determine the critical shear stress. The mea- surement was performed using a modified Mini-JET device. The device is very suitable for field measurements, because it is small, light, requires a relatively small amount of water, and can be operated by single person. The principle of measuring the critical shear stress of the soil is based on monitoring the rate of erosion crater formation by the action of a water jet of known kinetic energy. Based on the erosion crater development, the erosion parameters of the soil, such as the critical shear stress and the erodibility coefficient, can be calculated.
Characterization of an artificially generated rainfall used for a soil erosion research
Vodní eroze půdy se běžně studuje v laboratořích, experimenty bývají založeny na uměle generovaných srážkách s využitím dešťových simulátorů. Typicky je vyhodnocován vliv různých faktorů, jako jsou intenzita nebo úhrn srážky, půdní charakteristiky, zpracování půdy, posklizňové zbytky nebo sklon a délka erozní plochy na erozi.
