Land-use effects on channel morphology in streams in the Moutere gravels, Nelson, New Zealand

Baillie, Brenda R.

Publication date

January 2001

Publisher

Lincoln University College

Abstract

Land-use can have significant effects on channel morphology, especially in smaller-sized catchments (<5ha). Pasture streams in these small catchments are usually narrower than forested streams. It is hypothesized that the sediment trapping and retention ability of grass sod is responsible for the narrower channels in pasture streams. It is suggested that the coarser root structure in forested streams is less effective in armouring bank material against fluvial erosive processes. This, along with the influence of woody debris obstructions in diverting and channelising stream flow is thought to be the reason behind the wider and more variable stream widths in forested streams. In the Hakarimata Ranges, Waikato New Zealand, it appears that st...

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Land-use effects on channel morphology in streams in the Moutere gravels, Nelson, New Zealand

Abstract

Extracted data

Land-use effects on channel morphology in streams in the Moutere gravels, Nelson, New Zealand

Abstract

Extracted data

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