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Modelling upland and instream erosion, sediment and phosphorus transport in a large catchment
Author(s) -
Jakeman Anthony J.,
Green Timothy R.,
Beavis Sara G.,
Zhang Li,
Dietrich Claude R.,
Crapper Peter F.
Publication year - 1999
Publication title -
hydrological processes
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.222
H-Index - 161
eISSN - 1099-1085
pISSN - 0885-6087
DOI - 10.1002/(sici)1099-1085(19990415)13:5<745::aid-hyp777>3.0.co;2-e
Subject(s) - hydrology (agriculture) , environmental science , erosion , drainage basin , surface runoff , sediment , context (archaeology) , sediment transport , wepp , streams , deposition (geology) , land cover , land use , watershed , drainage , geology , soil conservation , ecology , geomorphology , geography , paleontology , computer network , geotechnical engineering , cartography , machine learning , computer science , biology , agriculture
Abstract This overview presents background information to place the subsequent papers by Beavis et al ., Dietrich et al . and Green et al . in the context of a unified approach. The modelling framework described here consists of two major components: an upland catchment model and an instream sediment transport model. The upland model simulates stream flow ( Q ), suspended sediment ( SS ) and associated phosphorus ( P ) using rainfall data, and is calibrated to daily stream flow time‐series under historical conditions. The instream model routes SS and attached P from the outlet of upland catchments to gauging points downstream. The instream transport model can infer sources (resuspension and bank erosion) and sinks (deposition) within a reach. Aerial photographs are used to assess the on‐site effects of climate and land cover/use on erosion and the drainage network. Changes in land cover/use and the effects on the drainage network are related to the parameters in the rainfall–runoff model so that associated effects on Q (and hence SS and P ) can be assessed. This modelling framework is prototyped on the Namoi Basin in northern New South Wales, Australia, and is described briefly herein. Copyright © 1999 John Wiley & Sons, Ltd.