An agent-based model that simulates the spatio-temporal dynamics of sources and transfer mechanisms contributing faecal indicator organisms to streams. Part 1: Background and model description

JOURNAL OF ENVIRONMENTAL MANAGEMENT

卷:270

Article

Neill, Aaron J.^1,2  Tetzlaff, Doerthe^1,3,4  Strachan, Norval J. C.⁵  Hough, Rupert L.²  Avery, Lisa M.²  Kuppel, Sylvain^1,6,7  Maneta, Marco P.^8,9  Soulsby, Chris^1,3 

[1] Univ Aberdeen, Northern Rivers Inst, Aberdeen AB24 3UF, Scotland

[2] James Hutton Inst, Aberdeen AB15 8QH, Scotland

[3] IGB Leibniz Inst Freshwater Ecol & Inland Fisheri, D-12587 Berlin, Germany

[4] Humboldt Univ, Dept Geog, D-10099 Berlin, Germany

[5] Univ Aberdeen, Sch Biol Sci, Cruickshank Bldg,St Machar Dr, Aberdeen AB24 3UU, Scotland

[6] Univ Paris, Inst Phys Globe Paris, CNRS UMR 7154, F-75231 Paris, France

[7] RiverLy, INRAE, F-69625 Villeurbanne, France

[8] Univ Montana, Geosci Dept, Missoula, MT 59812 USA

[9] Univ Montana, Dept Ecosyst & Conservat Sci, WA Franke Coll Forestry & Conservat, Missoula, MT 59812 USA

关键词: Diffuse pollution;    E. coli;    EcH(2)O-iso;    Microbial water quality;    Tracer-aided modelling;    Water quality modelling;   

DOI  :  10.1016/j.jenvman.2020.110903

来源: Elsevier

【 摘 要 】

A new Model for the Agent-based simulation of Faecal Indicator Organisms (MAFIO) is developed that attempts to overcome limitations in existing faecal indicator organism (FIO) models arising from coarse spatial discretisations and poorly-constrained hydrological processes. MAFIO is a spatially-distributed, process-based model presently designed to simulate the fate and transport of agents representing FIOs shed by livestock at the sub-field scale in small (<10 km(2)) agricultural catchments. Specifically, FIO loading, die-off, detachment, surface routing, seepage and channel routing are modelled on a regular spatial grid. Central to MAFIO is that hydrological transfer mechanisms are simulated based on a hydrological environment generated by an external model for which it is possible to robustly determine the accuracy of simulated catchment hydrological functioning. The spatially-distributed, tracer-aided ecohydrological model EcH(2)O-iso is highlighted as a possible hydrological environment generator. The present paper provides a rationale for and description of MAFIO, whilst a companion paper applies the model in a small agricultural catchment in Scotland to provide a proof-of-concept.

【 授权许可】

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