SPCART_Landcover2.img

Data format: Raster Dataset

Coordinate system: NAD_1983_UTM_Zone_12N

Theme keywords: Ecological Systems, NLCD classification, land cover

Location: http://fws-case-12.nmsu.edu/SanPedro/data/SPCART_Landcover2.zip

Abstract: We use classification and regression tree analysis similary to Lowery et al. (2007a and 2007b)to create a land cover dataset of ecological systems for the San Pedro Study Area. We used multi-temporal (spring, summer, and fall) ETM+ satellite imagery and tasselled-cap datasets coupled with elevation and elevation derived derivatives (landform). No accuracy assessment was conducted on these two datasets.

ISO and ESRI Metadata:

Metadata elements shown with blue text are defined in the International Organization for Standardization's (ISO) document 19115 Geographic Information - Metadata. Elements shown with green text are defined by ESRI and will be documented as extensions to the ISO 19115. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog.


Metadata Information

 

*Metadata language: English

*Metadata character set: utf8 - 8 bit UCS Transfer Format

 

*Last update: 20081208

 

Metadata contact:

Individual's name: K. Boykin

Organization's name: New Mexico Cooperative Fish and Wildlife Research Unit

Contact's position: Adjunct Asst. Professor

Contact's role: principal investigator

 

Contact information:

Phone:

Voice: 575-646-6303

Fax: 575-646-1281

 

Address:

Delivery point:

Box 30003, MSC 4901

City: Las Cruces

Administrative area: New Mexico

Postal code: 88003

Country: United States

e-mail address: kboykin@nmsu.edu

 

*Scope of the data described by the metadata: dataset

*Scope name: dataset

 

*Name of the metadata standard used: ISO 19115 Geographic Information - Metadata

*Version of the metadata standard: DIS_ESRI1.0

 

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Resource Identification Information:

 

Citation:

*Title: SPCART_Landcover2.img

Alternate titles: San Pedro Land Cover using CART

 

*Presentation format: digital map

 

Party responsible for the resource:

Individual's name: K. Boykin

Organization's name: New Mexico Cooperative Fish and Wildlife Research Unit

Contact's position: Adjunct Asst. Professor

Contact's role: principal investigator

 

Contact information:

Phone:

Voice: 575-646-6303

Fax: 575-646-1281

 

Address:

Delivery point:

Box 30003, MSC 4901

City: Las Cruces

Administrative area: New Mexico

Postal code: 88003

Country: United States

e-mail address: kboykin@nmsu.edu

 

Theme keywords:

Keywords: Ecological Systems, NLCD classification, land cover

 

Place keywords:

Keywords: San Pedro, Arizona, Sonora

 

Abstract:

We use classification and regression tree analysis similary to Lowery et al. (2007a and 2007b)to create a land cover dataset of ecological systems for the San Pedro Study Area. We used multi-temporal (spring, summer, and fall) ETM+ satellite imagery and tasselled-cap datasets coupled with elevation and elevation derived derivatives (landform).  No accuracy assessment was conducted on these two datasets.

 

*Dataset language: English

 

*Spatial representation type: grid

 

*Processing environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.1850

 

Resource's bounding rectangle:

*Extent type: Full extent in decimal degrees

*Extent contains the resource: Yes

*West longitude: -111.335068

*East longitude: -109.461661

*North latitude: 33.171061

*South latitude: 30.818786

 

Other extent information:

Geographic extent:

Bounding rectangle:

*Extent type: Full extent in the data's coordinate system

*Extent contains the resource: Yes

*West longitude: 468759.680688

*East longitude: 643449.680688

*North latitude: 3670251.070983

*South latitude: 3410481.070983

 

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Spatial Representation - Grid:

 

Number of dimensions: 2

Axis dimensions properties:

Dimension:

*Dimension name: column (x-axis)

*Dimension size: 5823

Resolution:

*Distance: 30

*Units of measure: Meter

*Conversion to ISO units: 1 Meter = 1 Meter(s)

 

Dimension:

*Dimension name: row (y-axis)

*Dimension size: 8659

Resolution:

*Distance: 30

*Units of measure: Meter

*Conversion to ISO units: 1 Meter = 1 Meter(s)

 

*Cell geometry: area

 

*Transformation parameters are available: Yes

 

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Reference System Information:

 

Reference system identifier:

*Value: NAD_1983_UTM_Zone_12N

 

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Data Quality Information:

 

Scope of quality information:

Level of the data: dataset

 

Lineage:

Lineage statement:

We created a land cover map for the San Pedro Watershed using methods similar to Southwest Regional Gap Analysis Project to derive an Ecological System level (Comer et al. 2003) land cover map for the Entire Basin (Lowery et al. 2007a, Lowery et al. 2007b). We obtained imagery (Landsat 7 ETM+) for the San Pedro Basin with dates (Table 1; Figure 2) similar to the Southwest Regional Gap Analysis Project (1999 - 2001).  Three seasons of imagery were used to coincide with spring, summer, and fall.  A mosaic of each season was created using ERDAS Imagine 8.6 for a larger area of southeastern Arizona, southwestern New Mexico, and Sonora, Mexico (Figure 3).  This included one mapping zone from SWReGAP (New Mexico Map Zone 3) and the San Pedro watershed boundary.  Imagery derived derivatives (e.g. tasseled cap datasets) were created for CART modeling.  The DEM and DEM derived datasets of slope, aspect, and landform were also created from the Shuttle Radar Topography Mission (SRTM).  Existing training site datasets from the Southwest Regional Gap Analysis Project were used as training sites for CART modeling.  This included 1399 points for 26 land cover classes (Appendix C).
 
Modeling used ERDAS, CART Sampling Tool, and See5 software to generate the land cover map.  The final map was derived by using most of the training sites (99%) with < 1% used for validation.  No minimum samples were used.  We used See5 to construct the classifier tree using a boost of 15 trials and no global pruning (See methods in Lowery et al. 2007a).  The output image was clumped using four connected neighbors and eliminating any area less than 1 acre. Non-CART modeled classes were first clustered using an unsupervised classification and then identified to urban, agriculture, open water, and fire scar areas.  These classes were then pasted back into the final land cover map. We provide a dataset at the broadest scale and also clipped to the buffered San Pedro watershed boundary.
 
We used the SWReGAP land cover legend (see description of SWReGAP ecological systems at http://earth.gis.usu.edu/swgap/data/atool/files/swgap_legend_desc.pdf ).  The resultant land cover dataset had 31 land cover types over the study area (Figure 4).  The ecological systems dataset was aggregated (Table 2) to the NLCD dataset with 10 land cover types (figure 5).
 
No accuracy was conducted on these datasets.  However, Lowery et al. (2007a, 2007b) discuss assessments using this protocol.
 
See report for listed citations

 

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Distribution Information:

 

Distributor:

Contact information:

Individual's name: K. Boykin

Organization's name: New Mexico Cooperative Fish and Wildlife Research Unit

Contact's position: Adjunct Asst. Professor

 

Contact information:

Phone:

Voice: 575-646-6303

Fax: 575-646-1281

 

Address:

Delivery point:

Box 30003, MSC 4901

City: Las Cruces

Administrative area: New Mexico

Postal code: 88003

Country: United States

e-mail address: kboykin@nmsu.edu

 

Available format:

*Format name: Raster Dataset

 

Transfer options:

*Transfer size: 0.000

 

Online source:

Online location (URL): http://fws-case-12.nmsu.edu/SanPedro/data/SPCART_Landcover2.zip

*Connection protocol: Local Area Network

Description: Downloadable Data

 

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