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One of the routines that I am interested in exploring further is the option of including a riparian zone within the Agricultural Catchments Research Unit (ACRU4) model. Once I add the riparian zone to the model, there are a few options available that need to be populated. While most are self explanatory, I am unsure about how the percent riparian infestation option actually works.

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Typically riparian zones in ACRU are configured to receive baseflow from upslope HRUs. If we consider 3 scenarios: (1) PercentRiparianInfestation=0%: there is no alien vegetation in the riparian zone and all the baseflow from upslope HRU will reach the river. (2) PercentRiparianInfestation=50%: half the riparian zone is infested with alien vegetation, and thus the riparian zone subsoil horizon will be drier, and up to 50% of the baseflow from the upslope HRUs will be retained in the riparian zone subsoil horizon and the remainder will reach the river. (3) PercentRiparianInfestation=100%: the whole riparian zone is infested with alien vegetation, and thus the riparian zone subsoil horizon will be even drier, and up to 100% of the baseflow from the upslope HRUs will be retained in the riparian zone subsoil horizon and the remainder will reach the river.

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    – Tardy
    Aug 23 at 13:23

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