Vector GIS Data
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| Political and Cultural |
Bangkok Migrants:
GPS points were collected in July-October 2003 for the locations of villagers who
migrated out of Nang Rong to work in Bangkok. These data were
collected by 2 GPS teams.
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Cadastral Data:
Two sets of 1:4000 scale cadastral maps were collected by the Nang Rong
Project: 376 maps from Sor Por Kor, and 703 maps from the Nang Rong
Land Office (Sor Por Kor and the Nang Rong Land Office are Thai agencies responsible
for distributing, tracking, and cataloging the allotment of land
parcels).
The maps depict land ownership for portions of Nang Rong District, as
well as areas close to the border of Nang Rong.
For each study
village, a 6 square kilometer box (comprised of 9 2x2 kilometer grids)
was placed over the village center. Then, the maps that fell
within these boxes were digitized. During the group discussion
portion of the year 2000 fieldwork, on fieldmaps created for each
village, headmen targeted the parcels that were in use by that
village. A number of differences were found between the parcel
configuration from digitized maps and the parcel configuration as
reported by the village headmen. From this fieldwork, a second
round of digitizing was performed, whereby the targeted parcels were
updated and re-digitized on a per-village basis.
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Cadastral Data
Village Grid
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Dwelling Units:
GPS teams used Global Positioning System receivers to obtain geographic
coordinates for each dwelling unit in each of the intensive study
villages. Each GPS team sought the assistance of knowledgeable
village informants when capturing GPS points. “Dwelling
Unit” refers to occupied and unoccupied houses. The quality
of each dwelling unit was also collected.
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Health Centers:
Subdistrict health center locations were collected through GPS
fieldwork in 1995-96. Administrative data was used to determine
the founding dates and other attribute information for the health
centers, clinics, and hospitals.
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| Nang Rong Study Site Boundary: The
study site boundary, which depicts Nang Rong district circa 1984, was
digitized from a series of 1:50,000 scale 1984 Thai Ministry of Defense
base maps.
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| Nang Rong Administrative Boundary: The
boundary of Nang Rong district was digitized from a series of 1:50,000
scale 1984 Thai Ministry of Defense base maps. Since the
subdistricts that comprise Nang Rong district have changed over the
past 20 years, the boundary of Nang Rong has also changed. This
coverage reflects the district boundary as it currently exists.
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Provincial Capitals:
Capital town and city points were digitized for Thailand from a
1:1,000,000 scale 1987 Thai Ministry of Defense map.
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| Subdistrict Boundaries: The
boundaries of the subdistricts that comprise Nang Rong district were
digitized from a series of 1:50,000 scale 1984 Thai Ministry of Defense
base maps. Only those subdistricts that were part of Nang Rong
district in 1984 were digitized.
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| Thailand National Boundary: The boundary of Thailand was digitized from a 1:1,000,000 scale 1987 Thai Ministry of Defense map.
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| Thailand Provinces: The boundaries of Thai provinces were digitized from a 1:1,000,000 scale 1987 Thai Ministry of Defense map.
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Villages (map compiled):
Village locations were digitized from two different sets of source
maps. The first were digitized from a series of 1:50,000 scale
1984 Thai Ministry of Defense maps. The second were digitized
from 1:15,000 scale administrative maps.
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Villages (GPSed):
This data layer contains point locations representing the village
"social centers" for all intensive and non-intensive study villages in
the Year 2000 Nang Rong Survey. The data were gathered in Phase I of the
survey, collected from February to June, 2000. Social centers
refer to the place(s) within a village where villagers congregate for
village meetings, trading, etc., or the social hub of the village.
Intensive study villages are those in which both Household surveys and
Community surveys were administered. Non-intensive study villages
are those in which only Community surveys were administered.
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Physical Landscape
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Climate and Irrigation Datasets:
A variety of climate and water resource related datasets exist within
the project. Irrigation data was acquired and digitized from
several Thai agencies. Point and line data included is as
follows: climate logging station locations; irrigation canal locations;
dam locations; reservoir locations; pond locations.
Additionally, these point locations have a host of data that is in the
process of being linked. Attribute data included is as follows:
precipitation values at logging stations, dating to the 1950s and
1960s; mean, maximum and minimum temperature at logging stations,
dating to the 1950s and 1960s; river water level and flow volume at
logging stations; dam water level and flow.
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Climate Stations
Mun Basin
Water Level
Water Resources
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Geology:
Bedrock geology class delineations were digitized from a series of
1:50,000 scale maps, obtained from the Royal Thai Department of Mineral
Resources.
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Hydrography: Hydrographic arcs and polygons were digitized from a series of 1:50,000 scale 1984 Thai Ministry of Defense base maps.
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Land Use/Land Cover (GPS):
A variety of Land Use/Land Cover (LULC) GPS data has been
collected. While the data has been mostly collected on an ad hoc
basis, there still exists a vast collection of data showing locations
of rice cultivation, upland field crops, forested areas, plantation and
tree crops, water resources, built-up and urban, other LULC types of
interest.
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Land Use/Land Cover (map compliled):
This coverage is a complete set of LULC polygons digitized from a
series of 1:50,000 scale 1984 Thai Ministry of Defense base maps.
Only general classes are used, such as paddy rice, forest, water,
plantation, as well as others.
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Land Use/Land Cover:
Land use polygons were digitized from the "Green Book", a land
resources assessment compiled from air photo interpretation (API) onto
a 1:50,000 scale 1984 Thai Ministry of Defense base map, reduced to
1:100,000 scale. The release date of this data set is 1988, with
a source date of 1986.
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Soils:
Soil polygons were digitized from a 1974 survey. Nomenclature
follows that of soil taxonomy. It was compiled from air photo
interpretation (API) with limited field checking. The base scale
is 1:50,000 reduced to 1:100,000, compiled on topographic maps.
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Terrain and Topography
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Elevation Contours: 10 meter contour lines were digitized from a series of 1:50,000 scale 1984 Thai Ministry of Defense base maps.
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| Spot Elevations: Spot elevations were digitized from a series of 1:50,000 scale 1984 Thai Ministry of Defense base maps.
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Transportation
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Nang Rong Transportation Network:
The hierarchy of transportation arcs, ranging from all weather paved
roads to foot and cart paths, were digitized from a series of 1:50,000
scale 1984 Thai Ministry of Defense base maps. |
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Geodetic Control Points:
A network of 103 geodetic control points were collected at road
intersections throughout Nang Rong district. The points were
gathered at intersections that are easily recognizable from aerial
photographs.
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