Maize

Data format: Raster Dataset - ESRI GRID

File or table name: maiz_ha

Coordinate system: Geographic

Theme keywords: Agriculture, HarvestPlus, crops, production, spatial distribution
Abstract: Maize This crop map is part of global database of harvested area and production for the main food staples (You and Wood, 2006). The map shows derived estimates of the spatial distribution and productivity of crops for 10-km grids using a novel allocation approach involving the fusion of sub-national crop production statistics. The values in this digital are the number of harvested hectares within each 10 km grid cell. This data includes area harvested in multiple season (therefore this is NOT the physical harvested area, but rather the total area harvested). IMPORTANT NOTE: the values in this digital map have been multiplied by a factor of 10. This was done to convert decimal values to integers, which can be handled more easily in GIS software The sub-national crop production data comes from agricultural censuses and surveys and has scaled values, so as to obtain national production estimates that were compatible with the annual average FAO national crop statistics for 1999-2001. The prototype crop distribution database used in this study is available from the authors upon request but is currently being regenerated using newer and additional data sources (including revisions based on expert validation) and an enhanced allocation algorithm. A large share of the sub-national crop production can be downloaded directly from FAO's (2006) Agromaps site at http://www.fao.org/landandwater/agll/agromaps/interactive/index.jsp.

FGDC and ESRI Metadata:
Metadata elements shown with blue text are defined in the Federal Geographic Data Committee's (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Elements shown with green text are defined in the ESRI Profile of the CSDGM. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory; these are shown with gray text.
Identification Information:


Citation:
Citation information:
Originators: IFPRI, Centro Internacional de Agricultura Tropical -CIAT-


Title:
Maize
*File or table name: maiz_ha


Publication date: Unknown
*Geospatial data presentation form: raster digital data


*Online linkage: \\Gisdata\SPAM\areaharv2\areaharv\maiz_ha


Description:
Abstract:
Maize

This crop map is part of global database of harvested area and production for the main food staples (You and Wood, 2006). The map shows derived estimates of the spatial distribution and productivity of crops for 10-km grids using a novel allocation approach involving the fusion of sub-national crop production statistics.

The values in this digital are the number of harvested hectares within each 10 km grid cell. This data includes area harvested in multiple season (therefore this is NOT the physical harvested area, but rather the total area harvested). 

IMPORTANT NOTE: the values in this digital map have been multiplied by a factor of 10. This was done to convert decimal values to integers, which can be handled more easily in GIS software

The sub-national crop production data comes from agricultural censuses and surveys and has scaled values, so as to obtain national production estimates that were compatible with the annual average FAO national crop statistics for 1999-2001. The prototype crop distribution database used in this study is available from the authors upon request but is currently being regenerated using newer and additional data sources (including revisions based on expert validation) and an enhanced allocation algorithm. A large share of the sub-national crop production can be downloaded directly from FAO's (2006) Agromaps site at http://www.fao.org/landandwater/agll/agromaps/interactive/index.jsp.

Purpose:
This digital map is intended to support research in agriculture, particularly targeting and impact research with a spatial dimension

Supplemental information:
You, L., Wood, S., 2006. An entropy approach to spatial disaggregation of agricultural production. Agric. Syst. 90, 329-347.

*Language of dataset: en


Time period of content:
Time period information:
Single date/time:
Calendar date: 2001

Currentness reference:
publication date

Status:
Progress: In work
Maintenance and update frequency: As needed

Spatial domain:
Bounding coordinates:
West bounding coordinate: -117.124396
East bounding coordinate: -34.792919
North bounding coordinate: 32.718456
South bounding coordinate: -55.500000

Local bounding coordinates:
*Left bounding coordinate: -180.000000
*Right bounding coordinate: 179.998560
*Top bounding coordinate: 89.999412
*Bottom bounding coordinate: -57.000000

Keywords:
Theme:
Theme keywords: Agriculture, HarvestPlus, crops, production, spatial distribution

Theme:
Theme keyword thesaurus: Agriculture

Access constraints: The spatial data used in this project is NOT in the public domain. These data sets have restrictions that prevent them from being shared with third parties. Any questions about these data sets should be directed to Stanley Wood in IFPRI (s.wood@cgiar.org)
Use constraints:
Users are prohibited from any commercial, non-free resale, or redistribution without explicit written
permission from IFPRI. Users must obtain permission to use the data .

Point of contact:
Contact information:
Contact organization primary:
Contact person: Marisol Calderon y/o Liliana Rojas
Contact organization: International Center for Tropical Agriculture -CIAT-
Contact position: Area de Documentacion e Informacion


Contact address:
Address type: mailing address
Address:
Km 17 Recta Cali Palmira
City: Palmira
State or province: Valle del Cauca
Postal code: 6713
Country: Colombia

Contact voice telephone: (057) 450 00 00 ext 3705
Contact facsimile telephone: (057) 450 00 73


Contact electronic mail address: gis-communications@cgiar.org


Hours of service: 7:30a.m. to 4:30p.m.



Browse graphic:
Browse graphic file type: JPEG

Data set credit:
Do not cite without permission of Stanley Wood (s.wood@cgiar.org)

*Native dataset format: Raster Dataset
*Native data set environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722


Cross reference:
Citation information:
Other citation details:
Do not cite


Back to Top
Data Quality Information:


Lineage:
Process step:
Process description:
Dataset copied.

Source used citation abbreviation:
C:\plantilla_vector


Process step:
Process description:
Metadata imported.

Source used citation abbreviation:
D:\DatosProyecto\HarvestPlus_AW\TEMPLATES\Template.xml


Process step:
Process description:
Metadata imported.

Source used citation abbreviation:
C:\Documents and Settings\lalturo\Desktop\TEMPLATES\TemplateLady.xml


Process step:
Process description:
Metadata imported.

Source used citation abbreviation:
C:\Documents and Settings\lalturo\Desktop\TEMPLATES\TemplateLady.xml


Process step:
Process description:
Metadata imported.

Source used citation abbreviation:
D:\temp\xml76.tmp


Process step:
Process description:
Metadata imported.

Source used citation abbreviation:
\\Gisdata\harvestplus\Atlas_Biofort\AgroEcologia\Koppen Climate Classification.lyr.xml


Process step:
Process description:
Metadata imported.

Source used citation abbreviation:
D:\Datosproyectos\HarvestPlus\Metadata\HP_template.xml


Process step:
Process description:
Metadata imported.

Source used citation abbreviation:
\\Gisdata\spam\areaharv2\areaharv\whea_ha\metadata.xml


Back to Top
Spatial Data Organization Information:


*Direct spatial reference method: Raster


Point and vector object information:
SDTS terms description:
SDTS point and vector object type: G-polygon
Point and vector object count: 755

Raster object information:
*Image format: ESRI GRID
*Number of bands: 1


*Row count: 1764
*Column count: 4320
*Vertical count: 1


*Cell size X direction: 0.083333
*Cell size Y direction: 0.083333


*Bits per pixel: 32
*Pyramid layers: TRUE
*Image colormap: FALSE
*Compression type: Default


*Raster object type: Grid Cell
*Raster display type: matrix values
*Raster origin: Upper Left


Back to Top
Spatial Reference Information:


Horizontal coordinate system definition:
Geographic:
Latitude resolution: 0.000001
Longitude resolution: 0.000001
Geographic coordinate units: Decimal degrees

Planar:
Planar coordinate information:
*Planar coordinate encoding method: row and column
Coordinate representation:
*Abscissa resolution: 0.083333
*Ordinate resolution: 0.083333

Geodetic model:
Horizontal datum name: D_Clarke_1866
Ellipsoid name: Clarke 1866
Semi-major axis: 6378206.400000
Denominator of flattening ratio: 294.978698

Back to Top
Entity and Attribute Information:


Detailed description:
*Name: maiz_ha


Entity type:
*Entity type label: maiz_ha
*Entity type type: Table
*Entity type count: 26095

Attribute:
Attribute label: VALUE
Attribute definition:
hectares of harvested area multiplied by 10, within each 10 km grid cell
Attribute definition source:
Stanley Wood

Attribute:
Attribute label: COUNT


Attribute:
*Attribute label: ObjectID
*Attribute alias: ObjectID
*Attribute definition:
Internal feature number.
*Attribute definition source:
ESRI

*Attribute type: OID
*Attribute width: 4
*Attribute precision: 0
*Attribute scale: 0


Attribute domain values:
*Unrepresentable domain:
Sequential unique whole numbers that are automatically generated.


Attribute:
*Attribute label: Value
*Attribute alias: Value
Attribute definition:
Number of cultivated hectares harvested within 10 km grid cells
Attribute definition source:
Stanley Wood

*Attribute type: Integer
*Attribute width: 0
*Attribute precision: 0
*Attribute scale: 0


Attribute:
*Attribute label: Count
*Attribute alias: Count


*Attribute type: Double
*Attribute width: 0
*Attribute precision: 0
*Attribute scale: 0


Overview description:
Dataset overview:
See You, L., Wood, S., 2006. An entropy approach to spatial disaggregation of agricultural production. Agric. Syst. 90, 329-347.

Entity and attribute overview:
See You, L., Wood, S., 2006. An entropy approach to spatial disaggregation of agricultural production. Agric. Syst. 90, 329-347.

Entity and attribute detail citation:
See You, L., Wood, S., 2006. An entropy approach to spatial disaggregation of agricultural production. Agric. Syst. 90, 329-347.

Back to Top
Distribution Information:


Distributor:
Contact information:
Contact person primary:
Contact person: Marisol Calderon y/o Liliana Rojas
Contact organization: International Center for Tropical Agriculture -CIAT-
Contact position: Area de Documentacion e Informacion


Contact address:
Address type: physical address
Address:
Km 17 Recta Cali Palmira
City: Cali
State or province: Valle del Cauca
Postal code: 6713
Country: Colombia

Contact voice telephone: (057) 450 00 00 ext 3705
Contact facsimile telephone: (057) 450 00 73


Contact electronic mail address: gis-communications@cgiar.org


Hours of service: 7:30a.m. to 4:30p.m.



Resource description: Non-public domain data set


Distribution liability:
Users are prohibited from any commercial, non-free resale, or redistribution without explicit written 
permission from IFPRI

Standard order process:
Digital form:
Digital transfer information:
*Transfer size: 1.472
*Dataset size: 1.472

Back to Top
Metadata Reference Information:


*Metadata date: 20070523


*Language of metadata: en


Metadata contact:
Contact information:
Contact person primary:
Contact organization: International Center for Tropical Agriculture -CIAT-

Contact address:
Address type: physical address
Address:
Km 17 Recta Cali Palmira
City: Cali
State or province: Valle del Cauca
Postal code: 6713
Country: Colombia

Contact voice telephone: (057) 450 00 00 ext 3295
Contact facsimile telephone: (057) 450 00 73


*Metadata standard name: FGDC Content Standards for Digital Geospatial Metadata
*Metadata standard version: FGDC-STD-001-1998
*Metadata time convention: local time


Metadata extensions:
Online linkage: http://gisweb.ciat.cgiar.org/sig/inicio.htm

Metadata extensions:
Online linkage: http://www.esri.com/metadata/esriprof80.html
Profile name: ESRI Metadata Profile

Metadata extensions:
*Online linkage: http://www.esri.com/metadata/esriprof80.html
*Profile name: ESRI Metadata Profile

Back to Top
Binary Enclosures:


Thumbnail:
Enclosure type: Picture



Back to Top