A master thesis from Aalborg University
PHOSPHORUS RISK ASSESSMENT IN SURFACE WATERS: Determination of phosphorus losses in the Romdrup Å catchment from surface erosion and drainage pathways
[PHOSPHORUS RISK ASSESSMENT IN SURFACE WATERS]
Author(s)
Term
4. term
Education
Publication year
2016
Submitted on
2016-09-01
Pages
60 pages
Abstract
Determination of the risk of phosphorus leaching to surface waters through surface and land drainage transport. The project aims to analyze and measure the leaching of P to the aquatic environment through an evaluation of the surface erosion from surrounding soils and from agricultural drainage from the catchment. The chosen case area for field measurement and analysis is the Romdrup Å basin, located in the eastern Aalborg Municipality. Through a comparison of the different sources and their rates, the risk of P accumulation can be predicted. A visual combination of sources is carried out through GIS. Data is collected through water and measurement of suspended solids, input through runoff and drainage, and land use analysis. The Revised Universal Soil Loss Equation is used to account for the overall soil loss from the catchment. The NAM model (Mike11, DHI) is used to study the distribution of soil moisture through the different soil storages. In the final part, the chosen methodologies are discussed in terms of efficiency in answering the problem statement, and hypothesis on further improvements are presented.
Keywords
Documents
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