Open AccessApplication of GWLF model in the Baohe River Watershed: Analysis of the source composition of nitrogen and phosphorus in the region
Author(s) -
Zuoda Qi,
Gelin Kang,
Chuanqi Hu,
Yong Xu,
Hanbao Chen
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/621/1/012079
Subject(s) - watershed , tributary , pollution , environmental science , phosphorus , nonpoint source pollution , hydrology (agriculture) , streamflow , water pollution , watershed management , nutrient pollution , water resource management , drainage basin , ecology , geography , geology , computer science , materials science , cartography , geotechnical engineering , machine learning , metallurgy , biology
The Luan River is one of the main rivers entering the Bohai Sea, and the Baohe River is a major tributary of the Luan River. Determining the contribution of pollution sources in the watershed where the upstream river enters the sea is a prerequisite for formulating environmental management measures in the sea area. Facts have proved that the model is an effective tool to determine the main environmental targets, especially in the analysis of pollution sources in the watershed. This paper uses the General Watershed Load Function (GWLF) model to simulate the monthly streamflow, dissolved nitrogen (DisN) load and dissolved phosphorus (DisP) load in the Baohe River Watershed from 2006 to 2014, and the contribution ratio of each pollution source in the source allocation of nitrogen and phosphorus load is emphasized. The application of the model shows the effectiveness of planning nitrogen and phosphorus management strategies for decision-makers, and provides a certain decision-making reference for pollution control in the watershed into the sea.