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Areas of High Erosion Risk (AHER) for the Kaipara Harbour was created from the union of the New Zealand Land Resource Inventory (NZRLI: LUC) shapefile dataset and the NZ Land Cover Data Base (LCDB3/4) data set to help target areas identified as vulnerable to erosion that are not a part of native bush, forestry (I.e. areas of grassland that are usually used for pastoral farming). |
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Areas of High Erosion Risk (AHER) for the Kaipara Harbour was created from the union of the New Zealand Land Resource Inventory (NZRLI: LUC) shapefile dataset and the NZ Land Cover Data Base (LCDB3/4) data set to help target areas identified as vulnerable to erosion that are not a part of native bush, forestry (I.e. areas of grassland that are usually used for pastoral farming). |
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Land Care NZ for NZRLI and for Land Cover Data Base produced by land care for the Ministry for the Environment (MfE). |
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50000 |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN><SPAN>Areas of High Erosion Risk (AHER) Greater Kaipara Harbour Catchment is an NRC created shapefile that combines attributes supplied in the </SPAN></SPAN><SPAN STYLE="font-weight:bold;"><SPAN>New Zealand Land Resource Inventory</SPAN></SPAN><SPAN /><SPAN /><SPAN STYLE="font-weight:bold;"><SPAN>(NZLRI),</SPAN></SPAN><SPAN /><SPAN>namely the </SPAN><SPAN STYLE="font-weight:bold;"><SPAN>land use Capability</SPAN></SPAN><SPAN /><SPAN /><SPAN STYLE="font-weight:bold;">(LUC)</SPAN><SPAN /><SPAN>component, which is a rating of the ability of each polygon to sustain agricultural production, based on an assessment of the inventory factors above, climate, the effects of past land use, and the potential for erosion. </SPAN></P><P /><UL STYLE="margin:0 0 0 0;padding:0 0 0 0;"><LI><P STYLE="font-weight:bold;"><SPAN><SPAN>LUC values selected range from “6 e1” – “7 e9”.</SPAN></SPAN></P></LI><LI><P><SPAN><SPAN>Also, slope attributes were targeted which are identified in the NZLRI </SPAN></SPAN><SPAN STYLE="font-weight:bold;">(‘D slopes - ‘G’ Slopes</SPAN><SPAN STYLE="font-weight:bold;">)</SPAN><SPAN>.</SPAN></P></LI></UL><P /><P><SPAN><SPAN>The second component to this data is The New Zealand </SPAN></SPAN><SPAN STYLE="font-weight:bold;">Land cover data base (LCDB3/4)</SPAN><SPAN /><SPAN>The Land Cover Database (LCDB3/4) is a multi-temporal digital thematic map of land cover and land use. Land cover information contains snapshots at each of four periods; summer 1996/97, summer 2001/02, summer 2008/09, and summer 20012/13</SPAN></P><P /><UL STYLE="margin:0 0 0 0;padding:0 0 0 0;"><LI><P><SPAN><SPAN>LCDB3/4 was used to select areas of </SPAN></SPAN><SPAN STYLE="font-weight:bold;"><SPAN>non-forest</SPAN></SPAN><SPAN /><SPAN>(I.e. “High, Low Producing Exotic Grassland”, “Gorse and Broom”, “Short rotation Cropland”) analysis.</SPAN></P></LI></UL><UL STYLE="margin:0 0 0 0;padding:0 0 0 0;"><LI><P><SPAN><SPAN>Created to identify areas to be targeted as a part of MPI funded Greater Kaipara Harbour Catchment Hill Country Erosion project</SPAN></SPAN></P></LI></UL><P><SPAN>Data is designed for in-house use 1:50,000 scale.</SPAN></P></DIV></DIV></DIV> |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN STYLE="font-size:16pt">The dataset can be used by NRC for its normal business, but it may not be provided to a third party, even when acting as an agent of NRC</SPAN><SPAN STYLE="font-size:16pt">.</SPAN></P><P><SPAN /><SPAN STYLE="font-size:16pt">Designed for Scale 1:50,000</SPAN></P></DIV></DIV></DIV>, <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The multi-factor, homogenous unit area mapping, method tends to result in themes being delineated at lower resolution than a single factor map of equivalent scale. Erosion and Vegetation were often recorded within units defined primarily on the basis of Rock, Soil, and Slope</SPAN></P></DIV></DIV></DIV>, <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>While mapping scale remained constant (at 1:63,360 and later 1:50,000), polygon resolution increased in detail as the survey progressed, and was variably constrained by the quality of source information available to the mapper</SPAN></P></DIV></DIV></DIV> |
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Areas of High Erosion Risk (AHER) |
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["Erosion","Service: 436\\web_edit\\FarmPlanNRC_Context","Service: 434\\GIS_Library\\Land_Soils"] |
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en-US |
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625000 |
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