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Investigation:

LC-24 (Walker / Reis)

LBA Dataset ID:

LC24_HISTORICAL_ROADS_AMAZON

Originator(s):

1. WALKER, R.T.
2. REIS, E.J.
      3. CALDAS, M.M.

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 historical roads for the Legal Amazon in digital format. The data set ranges from 1968 to 1993 for every state in the Legal Amazon. Basin-wide federal and state roads were digitized as arcs and are provided as five ESRI shapefiles (1968, 1975, 1981, 1987, 1993) in GCS South American 1969 projection.

Beginning Date:

1968-01-01

Ending Date:

1993-12-31

Metadata Last Updated on:

2011-10-27

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-24 Historical Roads of the Legal Amazon: 1968-1993 :  http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1043

Documentation/Other Supporting Documents:

LBA-ECO LC-24 Historical Roads of the Legal Amazon: 1968-1993 :  http://daac.ornl.gov/LBA/guides/LC24_Historical_Roads_Amazon.html

Citation Information - Other Details:

Walker, R.T., E.J. Reis and M.M. Caldas. 2011. LBA-ECO LC-24 Historical Roads of the Legal Amazon: 1968-1993. Data set. Available on-line [http://daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. http://dx.doi.org/10.3334/ORNLDAAC/1043

Keywords - Theme:

Parameter Topic Term Source Sensor
DEFORESTATION LAND SURFACE HABITAT CONVERSION/FRAGMENTATION MAPS DIGITIZER

Uncontrolled Theme Keyword(s):  DEFORESTATION, HISTORICAL ROADS , LEGAL AMAZON

Keywords - Place (with associated coordinates):

Region
(click to view profile)
Site
(click to view profile)
North South East West
  ACRE -5.12310 -18.04050 -41.83420 -73.80250

Related Publication(s):

Arima, E., R.T. Walker, S. Perz, and M. Caldas. 2005. Loggers and Forest Fragmentation: Behavioral Models of Road Building in the Amazon Basin, 95(3):525-541.

Brandao A.O. and C.M. Souza. 2006. Mapping unofficial roads with Landsat images: a new tool to improve the monitoring of the Brazilian Amazon rainforest. International Journal of Remote Sensing 27(1):177-189.

Perz SG, Caldas M, Arima E, and Walker R (2007). Unofficial Road Building in the Amazon: Socioeconomic and Biophysical Explanations. Development and Change. 38(3): pp 531 - 553.

Perz, S., S. Brilhante, F. Brown, M. Caldas, S. Ikeda, E. Mendoza, C. Overdevest, V. Reis, J.F. Reyes, D. Rojas, M. Schmink, C. Souza, and R. Walker. 2008. Road building, land use and climate change: prospects for environmental governance in the Amazon. Philosophical Transactions of the Royal Society B-Biological Sciences 363(1498):1889-1895.

Perz, S.G., C. Overdevest, M.M. Caldas, R.T. Walker, and E.Y. Arima. 2007. Unofficial road building in the Brazilian Amazon: dilemmas and models for road governance. Environmental Conservation 34(2):112-121.

Pfaff, A., J. Robalino, R. Walker, E. Reis, S. Perz, C. Bohrer, and S. Aldrich. 2007. Roads Investments, Spatial Intensification and Deforestation in the Brazilian Amazon. Journal of Regional Science 47(1).

Data Characteristics (Entity and Attribute Overview):

Data Characteristics:

Basin-wide federal and state roads digitized as arcs and maintained as five ESRI shapefiles (1968, 1975, 1981, 1987, 1993) in GCS South American 1969 projection.




Data are provided in separate directories organized such that:


YYYY_GIS contains the GIS shapefiles


YYYY_PDF contains the PDF images of the maps


YYYY_PDF/Federal contains the PDF images of the Federal maps, if available


YYYY_PDF/State contains the PDF images of the State maps, if available



file names are structured such that:



<i>sitename</i>YY_histrds.*

where sitename can include:


acre


amapa


amazonas


maranhao


matogross


para


rondonia


roraima


tocantins





and file extensions can include any of the following:


.dbf


.htm


.prj


.sbn


.sbx


.shp


.shp.xml


.shx

Data Application and Derivation:

Relation of roads and deforestation derived through neighborhood statistics (spatially auto-correlated regressions).

Quality Assessment (Data Quality Attribute Accuracy Report):

Quality Assessment:

Accuracy was not assessed for cadastral purposes. Intent was only for relation to deforestation and actual locations may be off by as much as a kilometer.

Process Description:

Data Acquisition Materials and Methods:

Acquired from IBGE.

References:

None.

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