Distributed-Framework Basin Modeling System: I. Overview and Model Coupling

Abstract

To better simulate the river basin hydrological cycle and to solve practical engineering application issues, this paper describes the distributed-framework basin modeling system (DFBMS), which concatenate a professional hydrological model system, a geographical integrated system, and a database management system. DFBMS has two cores, which are the distributed-frame professional modeling system (DF-PMS) and the double-object sharing structure (DOSS). An area/region that has the same mechanism of runoff generation and/or movement is defined as one type of hydrological feature unit (HFU). DF-PMS adopts different kinds of HFUs to simulate the whole watershed hydrological cycle. The HFUs concept is the most important component of DF-PMS, enabling the model to simulate the hydrological process with empirical equations or physical-based submodules. Based on the underlying source code, the sharing uniform data structure, named DOSS, is proposed to accomplish the integration of a hydrological model and geographical information system (GIS), which is a new way of exploring temporal GIS. DFBMS has different numerical schemes including conceptual and distributed models. The feasibility and practicability of DFBMS are proven through its application in different study areas.

Simulation and Application of Water Environment in Highly Urbanized Areas: A Case Study in Taihu Lake Basin

“…In alignment with the treatment efficiencies of various PTUs, the pollutant treatment module computes the quantity of pollutants entering the river network based on the pollution generated by different PGUs. The waste load model bears resemblance to the water cycle model in the plain Hydrological Feature Unit (HFU) [31]. Pollutant Generation Units (PGUs) within this model encompass various sources, such as factories, large city residents, urban residents, livestock and poultry farming, farmland rainfall pollution, rural residents, aquaculture, and urban rainfall pollution (Figure 2).…”