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Investigation:

LC-04 (Foley / Costa)

LBA Dataset ID:

LC04_LANDUSE_5MIN

Originator(s):

1. CARDILLE, J. A.
2. FOLEY, J.A.
      3. COSTA, M.H.

Point(s) of Contact:

ORNL DAAC User Services Office Oak Ridge National Laboratory Oak Ridge, Tennessee 37 (ornldaac@ornl.gov)

Dataset Abstract:

This data set contains 5-minute land use maps for agricultural activity in Amazonia. The data set was produced by the statistical fusion of agricultural census data from Brazil and Peru with the land cover data product from the Global Land Cover Facility. These land use maps indicate the estimated total amount of cropland and pasture (natural and planted) for the Amazon and Tocantins River basins in 1995 and 1980 and are suitable for use in models or other similar purposes. Data are provided in the netCDF format and the ARC/INFO ASCII format. The 1995 data were generated from a fusion of agricultural census data and a satellite classification, and are described in Cardille, Foley, and Costa (2002). The fusion technique merges agricultural census data from Brazil, Columbia, Peru, and Bolivia with land cover data from the University of Maryland Global Land Cover Facility 1-km classification. This technique was used to derive an estimate of the mid-1990s total agriculture surface for the region, which was then apportioned according to agriculture census data into cultivated area, natural pasture, and planted pasture. The 1980 maps, including only the Brazilian portion of the Amazon/Tocantins river drainage basins, were created by scaling the mid-1990s snapshots backward in time using the relative increase or decrease in agriculture, as derived from mid-1980s census data and United Nations Food and Agriculture Organization (FAO) data (Cardille and Foley, 2003).

Beginning Date:

1995-01-01

Ending Date:

1995-01-01

Metadata Last Updated on:

2009-01-16

Data Status:

Archived

Access Constraints:

PUBLIC

Data Center URL:

http://daac.ornl.gov/

Distribution Contact(s):

ORNL DAAC User Services Office Oak Ridge National Laboratory Oak Ridge, Tennessee 37 (ornldaac@ornl.gov)

Access Instructions:

PUBLIC

Data Access:

IMPORTANT: The LBA-ECO Project website is no longer being supported. Links to external websites may be inactive. Final data products from the LBA project can be found at the ORNL DAAC. Please follow the fair use guidelines found in the dataset documentation when using or citing LBA data.
Datafile(s):

LBA-ECO LC-04 Satellite/Census-Based 5-Minute Land Use Data, Amazonia: 1980 and 1995:  http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=906

Documentation/Other Supporting Documents:

LBA-ECO LC-04 Satellite/Census-Based 5-Minute Land Use Data, Amazonia: 1980 and 1995:  http://daac.ornl.gov/LBA/guides/LC04_Land_Use_5min.html

Citation Information - Other Details:

Cardille, J. A., J. A. Foley, and M. H. Costa. 2008. LBA-ECO LC-04 Satellite/Census-Based 5-minute Land Use Data, Amazonia: 1980 and 1995. Data set. Available on-line [http://daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. doi:10.3334/ORNLDAAC/906

Keywords - Theme:

Parameter Topic Term Source Sensor
LAND COVER LAND SURFACE LAND USE/LAND COVER COMPUTER MODEL AVHRR (ADVANCED VERY HIGH RESOLUTION RADIOMETER)
LAND COVER LAND SURFACE LAND USE/LAND COVER VEGETATION SURVEY HUMAN OBSERVER

Uncontrolled Theme Keyword(s):  AGRICULTURE, AVHRR, CENSO AGROPECUARIO, CROPLAND, GLCF LAND COVER, LAND USE, PASTURE

Keywords - Place (with associated coordinates):

Region
(click to view profile)
Site
(click to view profile)
North South East West
  AMAZON BASIN 6.00000 -21.00000 -45.00000 -80.00000

Related Publication(s):

Cardille J.A. and J.A. Foley. 2003. Agricultural land-use change in Brazilian Amazonia between 1980 and 1995: Evidence from integrated satellite and census data. Remote Sensing of Environment 87(4):551-562.

Cardille, J.A., J.A. Foley, and M.H. Costa. (2002) Characterizing patterns of agricultural land use in Amazonia by merging satellite classifications and census data. Global Biogeochemical Cycles 16(3):Article-1045.

Data Characteristics (Entity and Attribute Overview):

Data Characteristics:

Sixteen files are included. These include 4 data files for each time period that are provided in 2 formats: netcdf (.nc) files and ARC/INFO ASCII (.txt) files.



Total Agriculture:



Totag80s.nc, Totag80s.txt, Totag90s.nc, and Totag90s.txt



Cultivated:



Cul80s.nc, Cul80s.txt, Cul90s.nc, and Cul90s.txt



Natural Pasture:



Pasnat80s.nc, Pasnat80s.txt, Pasnat90s.nc, and Pasnat90s.txt



Planted Pasture:



Paspla80s.nc, Paspla80s.txt, Paspla90s.nc, and Paspla90s.txt







These files are gridded at 5-minute latitude by longitude (~9km or 0.8333333 decimal degrees at the equator) resolution for the entire Amazon/Tocantins river drainage basins (21S - 6N; 45W - 80W). The files contain the estimated proportions of: total agriculture (totag), cultivated area (cul), natural pasture (pasnat), and planted pasture (paspla) in each grid cell in either the mid-1980s or mid-1990s. The 1980 data covers only the Brazilian portion of the Amazon/Tocantins river drainage basins while the 1995 data also includes areas in Columbia, Peru, and Bolivia. Proportions are expressed as parts per 10,000 so that, for example, a value of 8945 means that 89.45% of the given pixel is estimated by this procedure to be used for agricultural activity.

Data Application and Derivation:

These land use maps indicate the total amount of cropland and pasture for the Amazon and Tocantins River basins in the mid-1990s and is suitable for use in models or other similar purposes. See the related publications for additional applications.

Quality Assessment (Data Quality Attribute Accuracy Report):

Quality Assessment:

These data files are generated by a fusion of two data sources which may contain errors in position and value. In particular, census variables may be susceptible to under- and over-estimation for political, logistical, and economic reasons. While we do not treat these errors of estimation directly, it appears that the fusion technique smoothes extreme/unlikely values in the census data.

Process Description:

Data Acquisition Materials and Methods:

These data were generated from a fusion of agricultural census data and a satellite classification, and are described fully in the related paper (Cardille, Foley, and Costa, 2002).



The fusion technique merges agricultural census data from countries of the basin (including Brazil) with land cover data from the University of Maryland Global Land Cover Facility 1-km classification. This technique was used to derive an estimate of the mid-1990s total agriculture surface for the region, which was then apportioned according to agriculture census data into cultivated area, natural pasture, and planted pasture.



The 1980 maps were created by scaling the mid-1990s snapshots backward in time using the relative increase or decrease in agriculture, as derived from mid-1980s census data and United Nations Food and Agriculture Organization (FAO) data (Cardille and Foley, 2003). The 1980 data covers only the Brazilian portion of the Amazon/Tocantins river drainage basins.

References:

Cardille, J.A., J.A. Foley, and M.H. Costa. 2002. Characterizing patterns of agricultural land use in Amazonia by merging satellite classifications and census data. Global Biogeochemical Cycles 16(3):Article-1045.



Cardille J.A. and J.A. Foley. 2003. Agricultural land-use change in Brazilian Amazonia between 1980 and 1995: Evidence from integrated satellite and census data. Remote Sensing of Environment 87(4):551-562.doi:10.1016/j.rse.2002.09.001

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