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Global Change Master Directory (GCMD)
Geographic distribution of major crops across the world Global Biogeochemical Cycles
Entry ID: SAGE_MAJORCROPS


Summary
Abstract: The Center for Sustainability and the Global Environment (SAGE) 18 Major Crops
dataset characterizes the distribution of major crops across the Global
Biogeochemical Cycles. The data set was developed using data on proportion of
harvested area within each grid cell, and therefore represents, for each grid
cell, the probability of finding a given crop in that location during the year.
Thus, if a crop is multiple cropped during the year, it has a higher
probability of being in a grid cell than those crops that are single cropped,
even if they occupy the same "physical" area. Furthermore, the sum of the 18
major crops and the other crops will yield the original Ramankutty and Foley
(1998) data set. This implies simplisitic assumptions such as the ignoring of
temporary fallow land (also considered cropland), croplands temporarily used as
pastures, etc. In summary, this is a global data set intended to provide very
rough indications of the probability of finding major crops in different
locations across the world in the early 1990s period.

[Summary provided by SAGE.]

Related URL
Link: View Related Information
Description: Download the 18 Major Crops Dataset ArcINFO ASCII 5 min (14.8MB).


Link: View Related Information
Description: Download the 18 Major Crops Dataset ArcINFO ASCII half degree (645K).


Link: View Related Information
Description: Download the 18 Major Crops Dataset NetCDF 5 min (54.3MB).


Link: View Related Information
Description: Download the 18 Major Crops Dataset NetCDF half degree (2.3MB)

Geographic Coverage
 N: 90.0 S: -90.0  E: 180.0  W: -180.0

Data Set Citation
Dataset Creator: Leff, B., Ramankutty, N., and Foley, J.A
Dataset Title: Geographic distribution of major crops across the world Global Biogeochemical Cycles
Dataset Release Date: 2004-01-16T00:00:00.000Z
Dataset Publisher: University of Wisconsin-Madison
Version: Not provided
Data Presentation Form: GIS
Online Resource: http://www.sage.wisc.edu/iamdata/


Temporal Coverage
Start Date: 1970-01-01


Location Keywords
GEOGRAPHIC REGION > GLOBAL LAND


Science Keywords
AGRICULTURE >AGRICULTURAL PLANT SCIENCE    [Definition]
AGRICULTURE >FOREST SCIENCE    [Definition]
AGRICULTURE >SOILS >SOIL CLASSIFICATION    [Definition]
BIOSPHERE >ECOSYSTEMS >ANTHROPOGENIC/HUMAN INFLUENCED ECOSYSTEMS >AGRICULTURAL LANDS >CROPS    [Definition]
HUMAN DIMENSIONS >ENVIRONMENTAL GOVERNANCE/MANAGEMENT >LAND MANAGEMENT    [Definition]
LAND SURFACE >LAND USE/LAND COVER >LAND USE/LAND COVER CLASSIFICATION    [Definition]
LAND SURFACE >SOILS >SOIL CLASSIFICATION    [Definition]


Use Constraints
This global data set is intended to provide very rough indications of the
probability of finding major crops in different locations across the world in
the early 1990s period. It was developed to be used for global modeling
applications, and should be used with caution.


Keywords
Crops
Crop Characteristics
Biogeochemical Cycle


Data Set Progress
ACTIVE


Data Center
Center for Sustainability and the Global Environment, Gaylord Nelson Institute for Environmental Studies, University of Wisconsin, Madison    [Information]
Data Center URL: http://www.sage.wisc.edu/

Data Center Personnel
Name: NAVIN RAMANKUTTY
Email: nramanku at wisc.edu
Contact Address:
Center for Sustainability and the Global Environment
Nelson Institute for Environmental Studies
University of Wisconsin-Madison
1710 University Avenue
City: Madison
Province or State: WI
Postal Code: 53726
Country: USA



Distribution
Distribution_Media: Online
Distribution_Format: ArcInfo ASCII, NetCDF
Fees: No fees


Personnel
TYLER B. STEVENS
Role: METADATA AUTHOR
Phone: (301) 614-6898
Fax: 301-614-5268
Email: Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA


NAVIN RAMANKUTTY
Role: TECHNICAL CONTACT
Email: nramanku at wisc.edu
Contact Address:
Center for Sustainability and the Global Environment
Nelson Institute for Environmental Studies
University of Wisconsin-Madison
1710 University Avenue
City: Madison
Province or State: WI
Postal Code: 53726
Country: USA


Extended Metadata Properties
(Click to view more)

Creation and Review Dates
DIF Creation Date: 2005-12-13
Last DIF Revision Date: 2018-05-25



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