Anne-Grete Buseth Blankenberg
Senior Research Scientist
(+47) 416 97 737
anne-grete.blankenberg@nibio.no
Place
Ås O43
Visiting address
Oluf Thesens vei 43, 1433 Ås
Authors
Anne-Grete Buseth BlankenbergAbstract
No abstract has been registered
Abstract
Fertilizers and pesticides contribute to the pollution of water resources. The areas along streams are affected by climate change as stream bank failures often occur following floods or during prolonged rainfalls. In addition to BMP (best management practices) on the fields, grassed cover buffer zones are one of the most common measures for improving water quality in Norway’s agricultural catchments. Increased focus on buffer zones is important in a future climate perspective, both for food production, natural diversity and water quality. The efficiency of vegetation cover is composed of a variety of factors; therefore, effectives of these measures are to a large degree site specific. Recently, increased attention is given to the buffer zones efficiency, depending on both conditions in the catchments and the design of the buffer zones itself. However, most research is focusing in investigating the effect of buffer zones looking mostly at the surface runoff. According to our knowledge there is no previous research investigating the efficiency of the buffer zones with flower mixture. We focus on these types of vegetation as they also stimulate increased biodiversity. Moreover, previous investigations show that more than 50% of simulated runoff infiltrates into buffer zones with grass and bushes, while within buffer zones with trees there all the water infiltrates into the soil. Herein we show the results of 3 years monitoring surface runoff from buffer zones with different types of plant cover (grass and flower mixture). The idea was to monitor real live surface runoff from the field with autumn tillage (as “worst case scenario”). The results show significant differences, especially in the runoff quality. The visual differences are confirmed by water quality analysis.
Authors
Anne-Grete Buseth BlankenbergAbstract
Presentasjon som belyser ulike forurensningskilder fra jordbruket og hvordan avrenning til vann kan begrenses gjennom gode tiltak på jordet, i bekkekant og i bekken.
