Analysis of nutrient leaching under gravel turf on an ineralpine site

作者：Slawitsch Veronika^*; Birk Steffen; Poetsch Erich M

来源：Grundwasser, 2016, 21(3): 243-252.

DOI：10.1007/s00767-016-0331-2

• Gravel turf
• Gravitation lysimeters
• Limestone material
• Recycled building material
• Nutrient concentration
• Nutrient leaching

Surface stabilisation by planted gravel turf is a reliable alternative to conventionally-paved parking lots. At the HBLFA Raumberg-Gumpenstein test site, biennial nutrient concentrations in seepage water and nutrient leachate fluxes were analysed using six gravity lysimeters. Two different materials (limestone with 10 % humus and recycled building material with 10 % compost) were investigated. Seepage water fluxes showed better infiltration for lime gravel materials in comparison to recycled building materials. The nutrient concentrations and leachate flux showed significantly higher values in the recycled building materials in both years of the experiment. Both materials showed a decrease in nutrient concentration and leaching from the first to the second year. The nitrate threshold concentration given by the drinking water directive (Trinkwasserverordnung BGBI. I Nr. 21/2001) was met for lime materials but was exceeded by a factor of three for recycled building materials within the first year. In terms of groundwater protection, the high risk of nitrate leaching in the first year has to be considered if using recycled building material.

• 出版日期2016-9