v3_LCC NLCD 1992 Beta LAND - USEPA/ATtILA2 GitHub Wiki

NLCD (1992 Beta) LAND

National Land Cover Database (1992 Beta) LAND

Water-related raster values are tagged as EXCLUDED. Excluded values are ignored when calculating the effective area of a reporting unit. Percentage metrics are based on the effective area of a reporting unit, not the total area.

Coefficient values for impervious area calculations are based on those reported in Caraco et al. (1998). Those supplied for the nitrogen loading and phosphorous loading estimates were obtained from Reckhow et al. (1980). As coefficient values can vary considerably for a given land cover type across locations, all provided values should be evaluated critically before use and altered when necessary.

Information for the 1992 version of the NLCD has been archived, but for general information about the National Land Cover Dataset go to: http://www.mrlc.gov

NLCD (1992 Beta) LAND - Value Table

Value Description Excluded Nitrogen Phosphorus Impervious Class(es)
11 Open Water yes
12 Perennial Ice/Snow yes
21 Low Intensity Developed (Residential) 5.5 1.2 0.4 UI, dev, devl
22 Medium Intensity Developed (Residential) 5.5 1.2 0.6 UI, dev, devm
23 High Intensity Developed (Commercial/Industrial/Transportation) 5.5 1.2 0.9 UI, dev, devh
31 Barren Land (Rock/Sand/Clay) NI, bar
32 Quarry/Strip Mine/Gravel Pit UI, mmb
33 Transitional UI, mmb
41 Deciduous Forest 2.5 0.25 0.02 NI, for
42 Evergreen Forest 2.5 0.25 0.02 NI, for
43 Mixed Forest 2.5 0.25 0.02 NI, for
51 Shrubland 0.4 0.04 0.02 NI, shb
61 Orchard/Vineyard/Other Cultivated Crop 6.0 0.8 UI, agr, agrc
71 Grassland 0.3 0.06 0.02 NI, hrb
81 Pasture/Hay 5.0 0.9 UI, agr, agrp
82 Row Crop 8.5 2.3 UI, agr, agrc
83 Small Grain 6.0 0.8 UI, agr, agrc
84 Fallow UI, agr, agrc
85 Open Space Developed (Urban Grass/Recreational Grass) 0.1 UI, dev, devo
91 Woody Wetland 0.02 NI, wtl, wtlw
92 Emergent Wetland 0.02 NI, wtl, wtle

NLCD (1992 Beta) LAND - Class Table

Class Name abbv Value
All Natural Land Use NI 31,41,42,43,51,71,91,92
Barren bar 31
Forest for 41,42,43
Shrubland shb 51
Herbaceous hrb 71
Wetland wtl 91,92
Woody Wetland wtlw 91
Emergent Wetland wtle 92
All Human Land Use UI 21,22,23,32,33,61,81,82,83,84,85
Developed dev 21,22,23,85
Man-Made Barren mmb 32,33
Agriculture agr 61,81,82,83,84
Pasture/Hay agrp 81
Cultivated Crop agrc 61,82,83,84
View NLCD (1992 Beta) LAND XML

NLCD (1992 Beta) LAND XML

<?xml version='1.0' encoding='UTF-8'?>
<lccSchema xmlns="lcc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="lcc LCCSchema.xsd">
    <metadata>
        <name>NLCD (1992 Beta) LAND</name>
        <description>National Land Cover Database 1992 LAND Land Cover Classification Schema. Only viable for the NLCD dataset produced in 1992. Water-related raster values are tagged as EXCLUDED. Excluded values are ignored when calculating the effective area of a reporting unit. Percentage metrics are based on the effective area of a reporting unit, not the total area. Coefficient values for impervious area calculations are based on those reported in Caraco et al. (1998). Those supplied for the nitrogen loading and phosphorous loading estimates were obtained from Reckhow et al. (1980). As coefficient values can vary considerably for a given land cover type across locations, all provided values should be evaluated critically before use and altered when necessary. Complete literature citations are provided in the ATtILA online help (https://github.com/USEPA/ATtILA2/wiki).</description>
    </metadata>
    <!--  
        * The coefficients node contains coefficients to be assigned to values.
           
        * REQUIRED ATTRIBUTES
        * Id - text, unique identifier
        * Name - text, word or phrase describing coefficient
        * fieldName - text, name of field to be created for output
        *           - must conform to the field naming conventions dictated by the output database system
        * method - text, "P" or "A", designates "P"ercentage or per unit "A"rea calculation routine
     -->
    <coefficients>
        <coefficient Id="IMPERVIOUS" Name="Percent Cover Total Impervious Area" fieldName="PCTIA" method="P" />
        <coefficient Id="NITROGEN" Name="Estimated Nitrogen Loading Based on Land Cover" fieldName="N_Load" method="A" />
        <coefficient Id="PHOSPHORUS" Name="Estimated Phosphorus Loading Based on Land Cover" fieldName="P_Load" method="A" />
    </coefficients>
    <!--  
        * The values node defines the full set of values that can exist in a land cover raster.
        
        * REQUIRED ATTRIBUTES
        * Id - integer, raster code
        *
        * OPTIONAL ATTRIBUTES
        * Name - text, word or phrase describing value
        * excluded - boolean, "true" or "false" or "1" or "0"
        *          - used to exclude values from effective area calculations
        *          - excluded=false is the default 
        
        * A value element can optionally contain one or more coefficient elements

        * REQUIRED COEFFICIENT ATTRIBUTES
        * Id - text, must match an Id attribute from a coefficients node element
        * value - decimal, weighting/calculation factor
     -->
    <values>
        <value Id="11" Name="Open Water" excluded="true">
            <coefficient Id="IMPERVIOUS" value="0.0" />
            <coefficient Id="NITROGEN" value="0.0" />
            <coefficient Id="PHOSPHORUS" value="0.0" />
        </value>
        <value Id="12" Name="Perennial Ice/Snow" excluded="true">
            <coefficient Id="IMPERVIOUS" value="0.0" />
            <coefficient Id="NITROGEN" value="0.0" />
            <coefficient Id="PHOSPHORUS" value="0.0" />
        </value>
        <value Id="21" Name="Low Intensity Developed (Residential)">
            <coefficient Id="IMPERVIOUS" value="0.4" />
            <coefficient Id="NITROGEN" value="5.5" />
            <coefficient Id="PHOSPHORUS" value="1.2" />
        </value>
        <value Id="22" Name="Medium Intensity Developed (Residential)">
            <coefficient Id="IMPERVIOUS" value="0.6" />
            <coefficient Id="NITROGEN" value="5.5" />
            <coefficient Id="PHOSPHORUS" value="1.2" />
        </value>
        <value Id="23" Name="High Intensity Devloped (Commercial/Industrial/Transportation)">
            <coefficient Id="IMPERVIOUS" value="0.9" />
            <coefficient Id="NITROGEN" value="5.5" />
            <coefficient Id="PHOSPHORUS" value="1.2" />
        </value>
        <value Id="31" Name="Barren Land (Rock/Sand/Clay)">
            <coefficient Id="IMPERVIOUS" value="0.0" />
            <coefficient Id="NITROGEN" value="0.0" />
            <coefficient Id="PHOSPHORUS" value="0.0" />
        </value>
        <value Id="32" Name="Quarry/Strip Mine/Gravel Pit">
            <coefficient Id="IMPERVIOUS" value="0.0" />
            <coefficient Id="NITROGEN" value="0.0" />
            <coefficient Id="PHOSPHORUS" value="0.0" />
        </value>
        <value Id="33" Name="Transitional">
            <coefficient Id="IMPERVIOUS" value="0.0" />
            <coefficient Id="NITROGEN" value="0.0" />
            <coefficient Id="PHOSPHORUS" value="0.0" />
        </value>
        <value Id="41" Name="Deciduous Forest">
            <coefficient Id="IMPERVIOUS" value="0.02" />
            <coefficient Id="NITROGEN" value="2.5" />
            <coefficient Id="PHOSPHORUS" value="0.25" />
        </value>
        <value Id="42" Name="Evergreen Forest">
            <coefficient Id="IMPERVIOUS" value="0.02" />
            <coefficient Id="NITROGEN" value="2.5" />
            <coefficient Id="PHOSPHORUS" value="0.25" />
        </value>
        <value Id="43" Name="Mixed Forest">
            <coefficient Id="IMPERVIOUS" value="0.02" />
            <coefficient Id="NITROGEN" value="2.5" />
            <coefficient Id="PHOSPHORUS" value="0.25" />
        </value>
        <value Id="51" Name="Shrubland">
            <coefficient Id="IMPERVIOUS" value="0.02" />
            <coefficient Id="NITROGEN" value="0.4" />
            <coefficient Id="PHOSPHORUS" value="0.04" />
        </value>
        <value Id="61" Name="Orchard/Vineyard/Other Cultivated Crop">
            <coefficient Id="IMPERVIOUS" value="0.0" />
            <coefficient Id="NITROGEN" value="6.0" />
            <coefficient Id="PHOSPHORUS" value="0.8" />
        </value>
        <value Id="71" Name="Grassland">
            <coefficient Id="IMPERVIOUS" value="0.02" />
            <coefficient Id="NITROGEN" value="0.3" />
            <coefficient Id="PHOSPHORUS" value="0.06" />
        </value>
        <value Id="81" Name="Pature/Hay">
            <coefficient Id="IMPERVIOUS" value="0.0" />
            <coefficient Id="NITROGEN" value="5.0" />
            <coefficient Id="PHOSPHORUS" value="0.9" />
        </value>
        <value Id="82" Name="Row Crop">
            <coefficient Id="IMPERVIOUS" value="0.0" />
            <coefficient Id="NITROGEN" value="8.5" />
            <coefficient Id="PHOSPHORUS" value="2.3" />
        </value>
        <value Id="83" Name="Small Grain">
            <coefficient Id="IMPERVIOUS" value="0.0" />
            <coefficient Id="NITROGEN" value="6.0" />
            <coefficient Id="PHOSPHORUS" value="0.8" />
        </value>
        <value Id="84" Name="Fallow">
            <coefficient Id="IMPERVIOUS" value="0.0" />
            <coefficient Id="NITROGEN" value="0.0" />
            <coefficient Id="PHOSPHORUS" value="0.0" />
        </value>
        <value Id="85" Name="Open Space Developed (Urban Grass/Recreational Grass)">
            <coefficient Id="IMPERVIOUS" value="0.1" />
            <coefficient Id="NITROGEN" value="0.0" />
            <coefficient Id="PHOSPHORUS" value="0.0" />
        </value>
        <value Id="91" Name="Woody Wetland">
            <coefficient Id="IMPERVIOUS" value="0.02" />
            <coefficient Id="NITROGEN" value="0.0" />
            <coefficient Id="PHOSPHORUS" value="0.0" />
        </value>
        <value Id="92" Name="Emergent Wetland">
            <coefficient Id="IMPERVIOUS" value="0.02" />
            <coefficient Id="NITROGEN" value="0.0" />
            <coefficient Id="PHOSPHORUS" value="0.0" />
        </value>
    </values>
    <!-- 
        * The classes node contains values from a land cover raster grouped into one or more classes.
    
        * REQUIRED ATTRIBUTES
        * Id - text, unique identifier, also used for automated generation of output field name
        *    - must conform to the field naming conventions dictated by the output database system
        
        * OPTIONAL ATTRIBUTES
        * Name - text, word or phrase describing class
        * filter - text, a string of one or more tool name abbreviations separated by a ";"
        *        - possible abbreviations are: caem, flcp, flcv, lcosp, lcp, np, plcv, pm, rlcp, and splcp
        *        - used to exclude the class from the selectable classes in the tool's GUI
        * xxxxField - text, overrides ATtILA-generated field name for output
        *           - where xxxx equals a tool name abbreviation
        *           - possible abbreviations are: caem, flcp, flcv, lcosp, lcp, rlcp, and splcp
        *           - a separate xxxxField attribute can exist for each tool
        *           - must conform to the field naming conventions dictated by the output database system

        * A class can contain either values or classes but not both types.
        * Value elements contain only an Id attribute which refers to a value in a raster.
        * Values tagged as excluded="true" in the values node should not be included in any class.
     -->
    <classes>
        <class Id="NI" Name="All Natural Land Use" filter="" lcpField="NINDEX">
            <class Id="bar" Name="Barren" filter="">
                <value Id="31" />
            </class>
            <class Id="for" Name="Forest" filter="">
                <value Id="41" />
                <value Id="42" />
                <value Id="43" />
            </class>
            <class Id="shb" Name="Shrubland" filter="">
                <value Id="51" />
            </class>
            <class Id="hrb" Name="Herbaceous" filter="">
                <value Id="71" />
            </class>
            <class Id="wtl" Name="Wetland" filter="">
                <class Id="wtlw" Name="Woody Wetland" filter="">
                    <value Id="91" />
                </class>
                <class Id="wtle" Name="Emergent Wetland" filter="">
                    <value Id="92" />
                </class>
            </class>
        </class>
        <class Id="UI" Name="All Human Land Use" filter="" lcpField="UINDEX">
            <class Id="dev" Name="Developed" filter="">
                <class Id="devl" Name="Low Intensity Developed" filter="">
                    <value Id="21" />
                </class>
                <class Id="devm" Name="Medium Intensity Developed" filter="">
                    <value Id="22" />
                </class>
                <class Id="devh" Name="High Intensity Developed" filter="">
                    <value Id="23" />
                </class>
                <class Id="devo" Name="Open Space Developed" filter="">
                    <value Id="85" />
                </class>
            </class>
            <class Id="mmb" Name="Man-Made Barren" filter="">
                <value Id="32" />
                <value Id="33" />
            </class>
            <class Id="agr" Name="Agriculture" filter="">
                <class Id="agrp" Name="Pasture/Hay" filter="">
                    <value Id="81" />
                </class>
                <class Id="agrc" Name="Cultivated Crop" filter="">
                    <value Id="61" />
                    <value Id="82" />
                    <value Id="83" />
                    <value Id="84" />
                </class>
            </class>
        </class>
    </classes>
</lccSchema>

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