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- Title
Developing a Decision Support Tool for Assessing Land Use Change and BMPs in Large Ungauged Watersheds.
- Authors
Junyu Qi; Sheng Li; Bourque, Charles P.-A.; Zisheng Xing; Fan-Rui Meng
- Abstract
A simple decision support tool (DST) was developed to evaluate impacts of land use change and best management practices (BMPs) on water resources for large ungauged watersheds in New Brunswick, Canada. It was developed based on statistical equations derived from Soil and Water Assessment Tool (SWAT) simulations applied to a small experimental watershed in northwest New Brunswick. The DST was subsequently tested against field measurements and SWAT-model simulations for a larger watershed. Results from DST reproduced both field data and model simulations of annual stream discharge and sediment and nutrient loadings fairly well. The relative error of mean annual discharge and sediment and nutrient loading were within -52 to +27 %. Compared with SWAT, DST has fewer input requirements and can be applied to multiple watersheds without additional calibration. Also, scenario analyses with DST can be directly conducted for different combinations of land use and BMPs without complex model setup procedures.
- Subjects
WATERSHED management; DECISION support systems; BEST management practices (Pollution prevention)
- Publication
Hydrology & Earth System Sciences Discussions, 2017, p1
- ISSN
1812-2108
- Publication type
Article
- DOI
10.5194/hess-2017-423