NDHUB.MajorLandResourceArea

SDE Feature Class

Tags
Major Land Resource Area, MLRA, Land Resource Region, LRR, Common Resource Area, CRA, Land Resource Unit, LRU, Soil, Ecoregion, National Hierarchy of Ecological Units, NRCS, MLRA, POLYGON, MLRA, NRCS, CAD, POLYGON

Description

The United States, Caribbean and Pacific Basin Major Land Resource Areas (MLRA) Geographic Database serves as the geospatial expression of the map products presented and described in Agricultural Handbook 296 (2006). Land resource categories historically used at State and national levels are land resource units, land resource areas, and land resource regions. Land resource units (LRUs) are the basic units from which major land resource areas (MLRAs) are determined. They are also the basic units for State land resource maps. LRUs are typically coextensive with State general soil map units, but some general soil map units are subdivided into LRUs because of significant geographic differences in soils, climate, water resources, or land use. LRUs generally are several thousand acres in size. A unit can be one continuous area or several separate areas that are near each other. In 2005, these areas were designated as common resource areas (CRAs) within the Natural Resources Conservation Service (NRCS). CRAs are created by subdividing MLRAs by topography, other landscape features, hydrologic units, resource concerns, resource uses, and human considerations affecting use and soil and water conservation treatment needs. Common resource areas, or land resource units, are not described in this handbook and are not shown on the national map. Major land resource areas are geographically associated land resource units. Land resource regions are a group of geographically associated major land resource areas. Identification of these large areas is important in statewide agricultural planning and has value in interstate, regional, and national planning. In order to make this handbook more useful to other Federal agencies and private parties using ecological regions for planning or evaluation of natural resources programs and policies, Appendix I (Agriculture Handbook 296, 2006) cross-references MLRAs with Environmental Protection Agency Level III Ecoregions (USEPA, 2003; Omernik, 1987) and U.S. Forest Service ecological sections (Cleland and others, 2005; McNab and others, 2005). In this handbook, major land resource areas are generally designated by Arabic numbers and identified by a descriptive geographic name. Examples are MLRA 1 (Northern Pacific Coast Range, Foothills, and Valleys); MLRA 154 (South-Central Florida Ridge); and MLRA 230 (Yukon-Kuskokwim Highlands). Some MLRAs are designated by an Arabic number and a letter because previously established MLRAs have been divided into smaller, more homogeneous areas, for example, MLRAs 102A, 102B, and 102C. The use of numbers and letters to identify the newly created MLRAs requires fewer changes in existing information in records and in databases. A few MLRAs consist of two or more parts separated for short distances by other land resource areas. In places one of these parts is widely separated from the main body of the MLRA and is in an adjoining LRR. The description of the respective MLRA also applies to these outlying parts.


Summary

The MLRA Geographic Database was prepared for Agricultural Handbook 296 re-publication and is used to support decisions about regional and national agricultural issues. MLRAs Geographic Database and Agriculture Handbook 296 helped to identify the need for research and resource inventories, and it became the vehicle for extrapolating the results of research across political boundaries. It also became the basis for organizing and operating natural resource conservation programs. Today, USDA soil survey offices are organized to serve groups of the major land resource areas defined in this handbook. The handbook was updated in 1978, and the second edition was printed in 1981. This 2006 version of the handbook is the third edition.

Credits

United States Department of Agriculture, Natural Resources Conservation Service.  2006. Land Resource Regions and Major Land Resource Areas of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296.

Use limitations

These data have a scale dependency use constraint and should not be applied at map scales generally larger than 3,500,000. Original compilation scales included 1:250,000 USGS base maps for the Conterminous United States and 1:1,000,000 USGS base maps for Alaska.

Metadata 

Topics and Keywords 

*Content type  Downloadable Data


Citation 

*Title NDHUB.MajorLandResourceArea
Revision date 2016-01-13 00:00:00


Presentation formats* digital map


Resource Details 

Dataset languages* English (UNITED STATES)


Spatial representation type* vector


*Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1.4959


Credits
*Name NDHUB.MajorLandResourceArea

Extents 

Extent
Geographic extent
Bounding rectangle
Extent type  Extent used for searching
*West longitude -104.048894
*East longitude -96.554483
*North latitude 49.000495
*South latitude 45.934976
*Extent contains the resource Yes

Extent in the item's coordinate system
*West longitude -104.048894
*East longitude -96.554483
*South latitude 45.934976
*North latitude 49.000495
*Extent contains the resource Yes

Resource Constraints 

Constraints
Limitations of use

These data have a scale dependency use constraint and should not be applied at map scales generally larger than 3,500,000. Original compilation scales included 1:250,000 USGS base maps for the Conterminous United States and 1:1,000,000 USGS base maps for Alaska.


Spatial Reference 

ArcGIS coordinate system
*Type Geographic
*Geographic coordinate reference GCS_North_American_1983
*Coordinate reference details
Geographic coordinate system
Well-known identifier 4269
X origin -400
Y origin -400
XY scale 999999999.99999988
Z origin 0
Z scale 1
M origin 0
M scale 1
XY tolerance 8.98315284119521e-009
Z tolerance 0.001
M tolerance 0.001
High precision true
Left longitude -180
Latest well-known identifier 4269
Well-known text GEOGCS["GCS_North_American_1983", DATUM["D_North_American_1983", SPHEROID["GRS_1980", 6378137.0, 298.257222101]], PRIMEM["Greenwich", 0.0], UNIT["Degree", 0.0174532925199433], AUTHORITY["EPSG", 4269]]

Reference system identifier
*Value 4269
*Codespace EPSG
*Version 8.6.2


Spatial Data Properties 

Scale Range

Maximum (zoomed in)  1:5,000
Minimum (zoomed out)  1:150,000,000
Vector
*Level of topology for this dataset  geometry only


Geometric objects
Feature class name NDHUB.MajorLandResourceArea
*Object type  composite
*Object count 12



ArcGIS Feature Class Properties
Feature class name NDHUB.MajorLandResourceArea
*Feature type Simple
*Geometry type Polygon
*Has topology FALSE
*Feature count 12
*Spatial index TRUE
*Linear referencing FALSE



Distribution 

Distributor
Available format
*Name SDE Feature Class


Transfer options
Online source
*Location Server=p119collinsp401.ftw.nrcs.usda.gov; Service=5151; Database=base; User=base; Version=sde.DEFAULT
*Access protocol ArcSDE Connection
*Description  Downloadable Data



Distribution format
*Name SDE Feature Class


Fields 

Details for object NDHUB.MajorLandResourceArea 
*Type Feature Class
*Row count 12
Definition
Land resource units (LRUs) are the basic units from which major land resource areas (MLRAs) are determined.

Definition source
NRCS



Field OBJECTID
 
*Alias OBJECTID
*Data type OID
*Width 4
*Precision 10
*Scale 0
*Field description
Internal feature number.

*Description source
ESRI

*Description of values
Sequential unique whole numbers that are automatically generated.





Field MLRARSYM
 
*Alias MLRARSYM
*Data type String
*Width 4
*Precision 0
*Scale 0
Field description
Major Land Resource Area symbol

Description source
http://nasis.usda.gov/documents/metadata/5_3/

Range of values
Minimum value 1
Maximum value 99

Beginning date of values 2006
Ending date of values 2006




Field MLRA_ID
 
*Alias MLRA_ID
*Data type SmallInteger
*Width 2
*Precision 5
*Scale 0
Field description
Major Land Resource Area numeric sequence code

Description source
http://nasis.usda.gov/documents/metadata/5_3/

Range of values
Minimum value 1
Maximum value 343

Beginning date of values 2006
Ending date of values 2006


Measurement frequency  As needed




Field LRRSYM
 
*Alias LRRSYM
*Data type String
*Width 2
*Precision 0
*Scale 0
Field description
Land Resource Region Symbol

Description source
ftp://ftp-fc.sc.egov.usda.gov/NSSC/Ag_Handbook_296/Handbook_296_low.pdf

Range of values
Minimum value A
Maximum value Z

Beginning date of values 2006
Ending date of values 2006


Measurement frequency  As needed




Field MLRA_NAME
 
*Alias MLRA_NAME
*Data type String
*Width 200
*Precision 0
*Scale 0
Field description
Major Land Resource Area Name

Description source
ftp://ftp-fc.sc.egov.usda.gov/NSSC/Ag_Handbook_296/Handbook_296_low.pdf

Coded values
Name of codelist Federal Information Processing Standards Publication 5-2
Source ftp://ftp-fc.sc.egov.usda.gov/NSSC/Ag_Handbook_296/Handbook_296_low.pdf

Beginning date of values 2006
Ending date of values 2006


Measurement frequency  As needed




Field LRR_NAME
 
*Alias LRR_NAME
*Data type String
*Width 135
*Precision 0
*Scale 0
Field description
Land Resource Region Name

Description source
ftp://ftp-fc.sc.egov.usda.gov/NSSC/Ag_Handbook_296/Handbook_296_low.pdf

Coded values
Name of codelist FIPS PUB 5. Codes for the Identification of the States, the District of Columbia and the Outlying Areas of the United States, and Associated Areas
Source National Institute of Standards & Technology (NIST)

Beginning date of values 2006
Ending date of values 2006




Field Shape
 
*Alias Shape
*Data type Geometry
*Width 4
*Precision 0
*Scale 0
*Field description
Feature geometry.

*Description source
ESRI

*Description of values
Coordinates defining the features.





Field SHAPE.AREA
 
*Alias SHAPE.AREA
*Data type Double
*Width 0
*Precision 0
*Scale 0




Field SHAPE.LEN
 
*Alias SHAPE.LEN
*Data type Double
*Width 0
*Precision 0
*Scale 0






Overview Description
Entity and Attribute Overview
See USDA Agricultural Handbook 296 - digital maps and attributes.



Entity and Attribute Detail Citation
Land Resource Regions and Major Land Resource Areas (MLRA) of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296.  MLRA Geographic Database - digital maps and attributes.





Metadata Details 

*Metadata language English (UNITED STATES)
*Metadata character set  utf8 - 8 bit UCS Transfer Format


*Metadata identifier {C9CF649E-FA38-40BC-9977-BFDD15555055}


Scope of the data described by the metadata* dataset
Scope name* dataset


*Last update 2016-01-13


ArcGIS metadata properties
Metadata format ArcGIS 1.0
Metadata style FGDC CSDGM Metadata
Standard or profile used to edit metadata ISO19139


Created in ArcGIS for the item 2012-03-23 15:28:51
Last modified in ArcGIS for the item 2016-01-13 13:09:27


Automatic updates
Have been performed Yes
Last update 2016-01-13 13:09:27

Published to an ArcIMS Metadata Service Published