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Sediment Lost
Manaaki Whenua – Landcare ResearchThis layer depicts estimated sediment/soil loss across New Zealand and was created using the NZeem erosion model. Erosion control is defined as the prevention of soil loss by an ecosystem. NZeem has been calibrated from sediment discharges measured in New Zealand rivers (Dymond et al., 2010). This model estimates the long-term mean erosion rate from all...Created 3 May 2018 • Updated 3 March 2025 -
NZEEM (Erosion Rates) South Island
Manaaki Whenua – Landcare ResearchMean annual erosion rates (tonnes of soil/km2/yr) in the South Island of New Zealand under current landcover generated from EcoSat Woody (2001-2003). This layer is not available for download on LRIS. If you are interested in downloading that layer, please contact John Dymond. Reference: John R. Dymond, Harley D. Betts, Christina S. Schierlitz, An erosion...Created 3 May 2018 • Updated 3 March 2025 -
NZEEM (Erosion Rates) North Island
Manaaki Whenua – Landcare ResearchMean annual erosion rates (tonnes of soil/km2/yr) in the North Island of New Zealand under current landcover generated from EcoSat Woody (2001-2003). This layer is not available for download on LRIS. If you are interested in downloading that layer, please contact John Dymond. Reference: John R. Dymond, Harley D. Betts, Christina S. Schierlitz, An erosion...Created 3 May 2018 • Updated 3 March 2025 -
NZLRI Erosion Type and Severity
Manaaki Whenua – Landcare ResearchThe NZLRI is a spatial database containing about 100,000 polygons (map units), each of which describes a parcel of land in terms of five characteristics or attributes (rock, soil, slope, erosion, vegetation). This layer represents a GIS dissolve on the erosion attribute of the NZLRI.Created 3 May 2018 • Updated 3 March 2025