Material processing at Haean Basin scale: The role of hyporheic exchange and the riparian zone in NO3 and DOC export from catchments

TERRECO WP 2-12

Von 03/2009 bis 12/2013

Projektleiter: Jan Fleckenstein, Stefan Peiffer
Mitarbeiter: Svenja Bartsch, Christopher L. Shope
Bewilligung: IRTG 1565 WP II TERRECO - Complex Terrain and Ecological Heterogeneity - Evaluating ecosystem services in production versus water yield and water quality in mountainous landscapes

Abstract: In landscapes where groundwater and surface waters actively interact, the high concentrations of dissolved constituents in groundwater can have significant implications for surface water quality. In the Haean Catchment in South Korea, which has a strong monsoon type climate, high nitrate concentrations of up to 39.8 mg/L in the groundwater were measured in 2009. It is hypothesized that river-aquifer exchange in the Haean Catchment can significantly affect the nutrient export from the catchment and that the export is variable in time driven by monsoonal events. The identification of nitrate sink and source areas is based on groundwater and river water sampling at sites which reflect the dominant land uses as well as different elevations. Furthermore, we investigated the dynamics of river-aquifer exchange at two sites via piezometer transects at mid and lower elevations within the catchment. Our results suggest that due to river-aquifer exchange the river reaches in the lower part of the catchment have significantly higher nitrate concentrations than reaches at mid and high elevations. Hence, river-aquifer exchange fluxes might be an important control for the nitrate export from the catchment. However, this study also suggests that more research is needed to prove the general significance of this transport pathway.

Keywords: nitrate export, river-aquifer exchange, agriculture, monsoonal storm events, subcatchment, land use

 

project description in detail from proceedings of 2011 TERRECO Science Conference GAP

 

 



Aktuelle Termine

BayCEER-Kolloquium:
Do. 09.02.2023
Rising Novelty in Ecosystems and Climates
Do. 16.02.2023
What is diversification and how should we study it?
Ökologisch-Botanischer Garten:
So. 05.02.2023
Führung | Gin: Diese Pflanzen stecken drin
So. 05.02.2023
Eröffnung | "Faszination Natur - Malereien und Zeichnungen" - Gemeinschaftsausstellung
So. 12.02.2023
Eigentümlich fremd: Wie Neophyten unsere Vorstellungen von Natur provozieren
Wetter Versuchsflächen
Luftdruck (356m): 980.5 hPa
Lufttemperatur: 4.0 °C
Niederschlag: 1.5 mm/24h
Sonnenschein: <1 h/d
Wind (Höhe 17m): 15.2 km/h
Wind (Max.): 35.6 km/h
Windrichtung: W

...mehr
Globalstrahlung: 0 W/m²
Lufttemperatur: 0.0 °C
Niederschlag: 3.8 mm/24h
Wind (Höhe 32m): 16.5 km/h

...mehr
Diese Webseite verwendet Cookies. weitere Informationen