Title: | Effects of land use changes on the nutrient balance in mesoscale catchments |
Authors: | Lenhart, T., N. Fohrer and H.-G. Frede |
Year: | 2003 |
Journal: | Physics and Chemistry of the Earth |
Volume (Issue): | 28(33-36) |
Pages: | 1301-1309 |
Article ID: | |
DOI: | 10.1016/j.pce.2003.09.006 |
URL (non-DOI journals): | |
Model: | SWAT-G |
Broad Application Category: | hydrologic and pollutant |
Primary Application Category: | land use change assessment |
Secondary Application Category: | hydrologic assessment |
Watershed Description: | 692 km^2 Dill River, located in the state of Hessen in west central Germany. |
Calibration Summary: | Daily (May 2000 - April 2001): sediment E = .56 total P E = .46 nitrate E = .26 |
Validation Summary: | Daily (May 2001 - March 2001): sediment E = .74 total P E = .77 nitrate E = .09 |
General Comments: | Initial flow calibration and validation was carried out on three subwatersheds, and then on entire watershed. Graphical results show that the model mirrored measured trends well for flow and pollutants. The Proland agric. Econ. Model was used to generate 8 land use scenarios based on an average crop? field size (ranging from 0.5 to 20 ha). Sediment changed little while nitrate losses increased with increasing subarea size. |
Language: | English |
Keywords: | Land use changes; Nutrients; SWAT; Sediment |