LRIS Portal :: tag:lris.scinfo.org.nz,2008-10:feed:data:category=291066:sort=rLandcare Researchhttps://lris.scinfo.org.nz//MPI SLMACC Northland - Erosion Inventorytag:lris.scinfo.org.nz,2017-04:layers:485562017-04-13T01:52:50.255914+00:002017-04-13T01:50:16.624784+00:00
<a class="kxThumbnail" href="https://lris.scinfo.org.nz/layer/48556-mpi-slmacc-northland-erosion-inventory/" title="Details for MPI SLMACC Northland - Erosion Inventory"><img src="//tiles-cdn.koordinates.com/services/tiles/v4/thumbnail/layer=48556.60568,style=auto/90x70.png" alt="MPI SLMACC Northland - Erosion Inventory thumbnail"/></a><br />
<br /><strong>Updated with new data on 13 Apr 2017</strong><br />
<p>This erosion type mapping was carried out on-screen using the 10 cm digital orthophotography supported by visual terrain analysis using the LiDAR DEM (hill shade and slope classification). The orthophotos were used to identify the most recent erosion features in the Kaikohe<br>
study area; the DEM aided the mapping of features not visible in the orthophotos due to age<br>
or vegetation cover. </p>
<p>The classification of erosion types followed the categories defined by the Land Use<br>
Capability Survey Handbook (Lynn et al. 2009), which differentiates between surface<br>
erosion, mass movement, fluvial erosion, and deposition. Note that the estimated depth of the<br>
landslides (s = shallow, d = deep) was not consistently recorded; instead, the area of the<br>
landslides serves as a reasonable proxy. </p>
<p>The project report (11 Mb PDF) relating to this work is downloadable at <a href="https://www.mpi.govt.nz/dmsdocument/30615-use-of-modern-technology-including-lidar-to-update-the-new-zealand-land-resource-inventory-report">www.mpi.govt.nz/dmsdocument/30615-use-of-modern-te...</a></p>
From: <a href="https://lris.scinfo.org.nz/group/slmacc-northland/" title="Profile for SLMACC Northland">SLMACC Northland</a><br />
Added: 13 Apr 2017<br />
Updated: 13 Apr 2017<br />
Sediment Retainedtag:lris.scinfo.org.nz,2018-04:layers:953872018-04-23T21:21:00.490848+00:002018-04-23T20:54:06.549218+00:00
<a class="kxThumbnail" href="https://lris.scinfo.org.nz/layer/95387-sediment-retained/" title="Details for Sediment Retained"><img src="//tiles-cdn.koordinates.com/services/tiles/v4/thumbnail/layer=95387.297833,style=auto/90x70.png" alt="Sediment Retained thumbnail"/></a><br />
<br /><strong>Updated with new data on 23 Apr 2018</strong><br />
<p>This layer depicts estimated sediment/soil retention across New Zealand and was created using the NZeem erosion model. Sediment retained is defined as the difference between soil loss with and without tree cover (sediment loss avoided). 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 sources of erosion, both mass-movement and surficial, and accounts for all sizes of rainfall events. The model was run on the national datasets of rainfall, erosion terrains, and land cover to produce a national 1:50,000 scale map of long-term mean erosion rates. Dymond et al. (2010) assessed the accuracy of the model by comparing predictions of specific sediment discharge (assuming sediment delivery ratio of 1 everywhere) with available measurements and obtained a model efficiency of 0.64.</p>
From: <a href="https://lris.scinfo.org.nz/group/informatics-team/" title="Profile for Informatics Team">Informatics Team</a><br />
Added: 23 Apr 2018<br />
Updated: 23 Apr 2018<br />
Sediment Losttag:lris.scinfo.org.nz,2018-04:layers:953882018-04-23T21:21:10.722412+00:002018-04-23T20:59:37.071194+00:00
<a class="kxThumbnail" href="https://lris.scinfo.org.nz/layer/95388-sediment-lost/" title="Details for Sediment Lost"><img src="//tiles-cdn.koordinates.com/services/tiles/v4/thumbnail/layer=95388.297834,style=auto/90x70.png" alt="Sediment Lost thumbnail"/></a><br />
<br /><strong>Updated with new data on 23 Apr 2018</strong><br />
<p>This 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 sources of erosion, both mass-movement and surficial, and accounts for all sizes of rainfall events. The model was run on the national datasets of rainfall, erosion terrains, and land cover to produce a national 1:50,000 scale map of long-term mean erosion rates. Dymond et al. (2010) assessed the accuracy of the model by comparing predictions of specific sediment discharge (assuming sediment delivery ratio of 1 everywhere) with available measurements and obtained a model efficiency of 0.64.</p>
From: <a href="https://lris.scinfo.org.nz/group/informatics-team/" title="Profile for Informatics Team">Informatics Team</a><br />
Added: 23 Apr 2018<br />
Updated: 23 Apr 2018<br />
NZLRI Erosion Type and Severitytag:lris.scinfo.org.nz,2010-05:layers:480542010-05-07T01:16:18.058931+00:002010-05-07T01:00:18.904373+00:00
<a class="kxThumbnail" href="https://lris.scinfo.org.nz/layer/48054-nzlri-erosion-type-and-severity/" title="Details for NZLRI Erosion Type and Severity"><img src="//tiles-cdn.koordinates.com/services/tiles/v4/thumbnail/layer=48054.60006,style=auto/90x70.png" alt="NZLRI Erosion Type and Severity thumbnail"/></a><br />
<br /><strong>Updated with new data on 07 May 2010</strong><br />
<p>The 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.</p>
From: <a href="https://lris.scinfo.org.nz/group/informatics-team/" title="Profile for Informatics Team">Informatics Team</a><br />
Added: 07 May 2010<br />
Updated: 07 May 2010<br />
NZEEM (Erosion Rates) South Islandtag:lris.scinfo.org.nz,2010-12:layers:481762010-12-02T03:04:06.228010+00:002011-10-13T01:22:36.809380+00:00
<a class="kxThumbnail" href="https://lris.scinfo.org.nz/layer/48176-nzeem-erosion-rates-south-island/" title="Details for NZEEM (Erosion Rates) South Island"><img src="//tiles-cdn.koordinates.com/services/tiles/v4/thumbnail/layer=48176.60011,style=auto/90x70.png" alt="NZEEM (Erosion Rates) South Island thumbnail"/></a><br />
<br /><strong>Updated with new data on 13 Oct 2011</strong><br />
<p>Mean annual erosion rates (tonnes of soil/km2/yr) in the South Island of New Zealand under current landcover generated from <a href="http://lris.scinfo.org.nz/layer/184-ecosat-woody-south-island/">EcoSat Woody</a> (2001-2003). </p>
<p>This layer is not available for download on LRIS. If you are interested in downloading that layer, please contact <a href="mailto:dymondj@landcareresearch.co.nz">John Dymond</a>.</p>
<p>Reference: John R. Dymond, Harley D. Betts, Christina S. Schierlitz, An erosion model for evaluating regional land-use scenarios, Environmental Modelling and Software, Volume 25, Issue 3, March 2010, Pages 289-298, ISSN 1364-8152, <a href="http://dx.doi.org/10.1016/j.envsoft.2009.09.011">DOI</a>.</p>
From: <a href="https://lris.scinfo.org.nz/group/informatics-team/" title="Profile for Informatics Team">Informatics Team</a><br />
Added: 02 Dec 2010<br />
Updated: 13 Oct 2011<br />
NZEEM (Erosion Rates) North Islandtag:lris.scinfo.org.nz,2010-12:layers:481782010-12-02T03:02:58.574575+00:002011-10-13T01:22:38.858661+00:00
<a class="kxThumbnail" href="https://lris.scinfo.org.nz/layer/48178-nzeem-erosion-rates-north-island/" title="Details for NZEEM (Erosion Rates) North Island"><img src="//tiles-cdn.koordinates.com/services/tiles/v4/thumbnail/layer=48178.60010,style=auto/90x70.png" alt="NZEEM (Erosion Rates) North Island thumbnail"/></a><br />
<br /><strong>Updated with new data on 13 Oct 2011</strong><br />
<p>Mean annual erosion rates (tonnes of soil/km2/yr) in the North Island of New Zealand under current landcover generated from <a href="http://lris.scinfo.org.nz/layer/183-ecosat-woody-north-island/">EcoSat Woody</a> (2001-2003). </p>
<p>This layer is not available for download on LRIS. If you are interested in downloading that layer, please contact <a href="mailto:dymondj@landcareresearch.co.nz">John Dymond</a>.</p>
<p>Reference: John R. Dymond, Harley D. Betts, Christina S. Schierlitz, An erosion model for evaluating regional land-use scenarios, Environmental Modelling and Software, Volume 25, Issue 3, March 2010, Pages 289-298, ISSN 1364-8152, <a href="http://dx.doi.org/10.1016/j.envsoft.2009.09.011">DOI</a>.</p>
From: <a href="https://lris.scinfo.org.nz/group/informatics-team/" title="Profile for Informatics Team">Informatics Team</a><br />
Added: 02 Dec 2010<br />
Updated: 13 Oct 2011<br />
rollout_of_erosion_modelstag:lris.scinfo.org.nz,2011-11:document:92492010-12-02T03:02:58.574575+00:00
From: <a href="https://lris.scinfo.org.nz/group/informatics-team/" title="Profile for Informatics Team">Informatics Team</a><br />
Added: 28 Nov 2011<br />
rollout_of_erosion_modelstag:lris.scinfo.org.nz,2011-11:document:92482010-12-02T03:04:06.228010+00:00
From: <a href="https://lris.scinfo.org.nz/group/informatics-team/" title="Profile for Informatics Team">Informatics Team</a><br />
Added: 28 Nov 2011<br />
rollout_IHL_110308.doctag:lris.scinfo.org.nz,2011-10:document:92472011-10-14T01:31:52.006281+00:00
From: <a href="https://lris.scinfo.org.nz/group/informatics-team/" title="Profile for Informatics Team">Informatics Team</a><br />
Added: 14 Oct 2011<br />