Geographical Information Systems

Geog 481/506                                                                                                  Tu Th 3:30-4:50pm
Fall 2011                                                                                                          Fillmore 170

Instructor: Ling Bian                                                                                          LabA: Tue:   5-6:20pm, W145, Chunyuan Diao
Office: 120 Wilkeson                                                                                        LabB: Thur:  6:30-7:50pm, W145, Tong Sun
Office hours: Tu Th 2-3pm  or by appt.                                                             LabC: Fri:  10-11:20am, W145, Tong Sun

Other Digital Data 

1. Digital Line Graph (DLG)

    Base cartographic data, distributed by USGS
(1) Data content
    Planimetric data - data that include transportation, hydrography, and administrative and political boundaries.
    Topographic data - data that portray relief, e.g. DEM.
    Include spatial data, attribute data, and topology

(2) Data availability

Data content/Map scale                      1:24,000          1:100,000        1:2,000,000
                                                           7.5'x7.5'          30'x30'            multi-states
Boundaries                                                 x                      x                      x
     state, county, city, park
Hydrography                                              x                      x                      x
    streams and water bodies
Public land survey system                          x                      x
    rectangular system
Transportation                                            x                      x                      x
    roads/trails, railroads, pipelines
Other manmade structures                          x
    ski lift
Hypsography                                              x                      x                      x
    contour lines
Surface cover                                             x
    vegetative
Non-vegetative surface cover                     x
    sand, gravel, etc.
Survey control and markers                        x
    positions and elevations
Attribute codes: major and minor codes

2. Land Use and Land Cover digital data (LULC)

Distributed by USGS
    1:250,000 - 1x1 degree
    1:100,000 - 30x60 minut

Data content

(1) Land use and land cover
      Anderson Classification System Level I
(2) Political unit
      state, county, and city boundaries
(3) Census county subdivision
      census tracts for MSA, or minor civil divisions
(4) Hydrologic unit
    An 8-digit Hydrological Unit Code, region, sub-region, accounting, and cataloging unit
(5) Federal land ownership
 

3. Soils data

Developed by USDA Natural Resources Conservation Service (NRCS)
(1) Soil Survey Geographic Data Base (SSURGO)
      1:24,000, 7.5'x7.5'quads
      based on aerial photographs and field survey
      map unit: soil series

      attributes: physical, chemical, biological, land use, etc.
 

(2) State Soil Geographic Data Base (STATSGO)

      1:250,000, 1x2 degree coverage
      map unit: soil association
      attribute: 60 soil properties

      attribute structure
 

(3) National Soil Geographic Data Base (NATSGO)

      1:7,500,000
 

4. New York State Data sets
        http://cugir.mannlib.cornell.edu/
        http://www.nysgis.state.ny.us/