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Maize, Harvested Area (Hectares), 2000

Identification Information

Citation
Title
Maize, Harvested Area (Hectares), 2000
Originator
University of Minnesota. Institute on the Environment
Publisher
University of Minnesota. Institute on the Environment
Place of Publication
St. Paul , MN , US
Publication Date
2008-01-01
Identifier
http://purl.stanford.edu/jx872cc6888
Geospatial Data Presentation Form
mapDigital
Collection Title
EarthStat
Other Citation Details
These data were retrieved from http://www.earthstat.org on December 1, 2017.
Abstract
This raster dataset depicts the average number of hectares per land-area of a gridcell for maize crops. Data quality categories include (0= missing, 0.25= county level census data, 0.5= interpolated with census data from within 2 degrees of latitude/longitude, 0.75= state level census data, 1= country level census data). Croplands cover ~15 million km2 of the planet and provide the bulk of the food and fiber essential to human well-being. Most global land cover datasets from satelites group croplands into just a few categories, thereby excluding information that is critical for answering key questions ranging from biodiversity conservation to food security to biogeochemical cycling. Information about agricultural land use practices like crop selection, yield, and fertilizer use is even more limited.Here we present land use data sets created by combining national, state, and county level census statistics with a recently updated global data set of croplands on a 5 minute by 5 minute (~10km x 10 km) latitude/longitude grid. Temporal resolution: Year 2000- based of average of census data between 1997-2003.
Purpose
EarthStat.org serves geographic data sets with the purpose of solving the grand challenge of feeding a growing global population while reducing agriculture’s impact on the environment. The data sets on EarthStat allow users to map the distribution of crops globally, analyze the impact of climate change on crop yields, understand the impacts of fertilizer and manure use and much more.
Temporal Extent
Currentness Reference
ground condition
Time Period
Begin
2000-01-01T00:00:00
End
2000-12-31T00:00:00
Bounding Box
West
-180
East
180
North
90
South
-90
ISO Topic Category
imageryBaseMapsEarthCover
farming
Place Keyword
Earth (Planet)
Place Keyword Thesaurus
geonames
Theme Keyword
Maize
Harvesting
Theme Keyword Thesaurus
lcsh
Legal Constraints
Use Restrictions
otherRestrictions
Other Restrictions
Data may be freely downloaded for research, study, or teaching, but must be cited appropriately. Re-release of the data, or incorporation of the data into a commercial product, is allowed only with explicit permission. If you would like to request permission to use EarthStat datafor another purpose, please contact us at earthstat.data@gmail.com
Status
completed
Maintenance and Update Frequency
unknown
Collection
Collection Title
EarthStat
URL
http://purl.stanford.edu/tz390fn8810
Language
eng
Credit
Monfreda, C., N. Ramankutty, and J.A. Foley (2008), Farming the planet 2. Geographic distribution of crop areas, yields, physiological types, and net primary production in the year 2000, Global Biogrochem. Cycles, 22, GB1022, doi: 10.1029/2007/GB002947.
Point of Contact
Contact
University of Minnesota. Institute on the Environment
City
St. Paul
Administrative Area
MN
Country
US
Email
earthstat.data@gmail.com

Spatial Reference Information

Reference System Identifier
Code
4326
Code Space
EPSG
Version
6.14(3.0.1)

Distribution Information

Format Name
GeoTIFF
Distributor
Stanford Geospatial Center
Online Access
http://purl.stanford.edu/jx872cc6888
Protocol
http
Name
maize_HarvestedAreaHectares.tif

Content Information

Content Type
image

Spatial Representation Information

Raster
Number of Dimensions
2
Column Count
4320
Row Count
2160
Cell Geometry Type
area
Corner Points
Point
-180.000000 -90.000000
Point
-180.000000 90.000000
Point
180.000000 90.000000
Point
180.000000 -90.000000
Center Point
-0.000000 -0.000000

Metadata Reference Information

Hierarchy Level
dataset
Metadata File Identifier
edu.stanford.purl:jx872cc6888
Parent Identifier
http://purl.stanford.edu/tz390fn8810.mods
Dataset URI
http://purl.stanford.edu/jx872cc6888
Metadata Date Stamp
2017-12-18
Metadata Standard Name
ISO 19139 Geographic Information - Metadata - Implementation Specification
Metadata Standard Version
2007
Character Set
utf8
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