Auckland, Howick, brown river and marsh
Climate change impacts on suspended sediment loads in New Zealand
  • Climate change will see an increase in storm magnitude resulting in higher erosion, especially in mass movement erosion. Land use will need to prioritise mitigation to reduce the impacts of erosion and suspended sediment loads in New Zealand

    The dataset - What is it?

    The data provides changes in sediment loads over different land types and at the mid-century and late-century of the 2000’s under different Representative Concentration Pathways (RCP). RCPs are different amounts of greenhouse gas concentrations, in this report 2.6, 4.5, 6.0 and 5.5 are modelled.

    Why it's important

    Depleting soil resources will lead to a reduction in the production of food and fibre, and the quality of water. Extra concern should be given to North Island soft-rock hill country as it is particularly prone to increased erosion under climate change. North Island soft-rock hill country will have an increase in the magnitude and frequency of shallow landslide-triggering storm events.

    • How to use this information safely
      • Fitness for purpose / limitations

        This table indicates whether the dataset is suitable for different types of questions at different scales.

        Note: Users should carefully consider their purpose as this dataset may not be suitable.

         

        Operational

        Absolute

        Relative

        Screening/scoping

        Block/farm

        No

        No

        Maybe

        Maybe

        Multi-farms(5+)

        Maybe

        Maybe

        Maybe

        Maybe

        Catchment

        Maybe

        Maybe

        Yes

        Yes

        National/regional

        Yes

        Maybe

        Yes

        Yes

        Caveats

        These model outputs are designed for national-scale assessment of the relative differences in the impact of climate change on erosion and suspended sediment loads between regions. Caution should be taken when using the data at finer resolutions (i.e. catchment to individual REC2 watersheds) due to limitations in the ability of the model to represent erosion processes at this scale.

        How to interpret this table

  • Please note:

    You can use this information to help form an understanding climate change impacts on suspended sediment loads in New Zealand.

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