GeoAPEXOL, a web GIS interface for the Agricultural Policy Environmental eXtender (APEX) model enabling both field and small watershed simulation
Abstract
Nonpoint source (NPS) pollution (are currently a common problem that is faced in many places around the world. A quick evaluation of the NPS pollution on site are helpful in deciding how serious is the pollution now and where a controlling practice can potentially be implemented with better effectiveness. In this study, a web GIS interface for the APEX model named GeoAPEXOL is developed. The interface serves as a tool to automatically set up of the APEX model for both a watershed or a field boundary and conduct a quick evaluation of the NPS pollution status. A large background database including DEM, land use, soil, climate, and agricultural management is prepared for the automation of model setup process. One important feature of the interface is that the NPS can be evaluated for a field boundary considering contribution of NPS pollutions by the upstream areas, which may locate outside the field boundary and generally ignored by traditional NPS evaluation methods at the field scale.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFM.H13C..08F
- Keywords:
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- 1632 Land cover change;
- GLOBAL CHANGE;
- 1834 Human impacts;
- HYDROLOGY;
- 1847 Modeling;
- HYDROLOGY;
- 1879 Watershed;
- HYDROLOGY