Summary & Purpose

This is a polygon data set representing the extent of urban development within areas of special interest in Boise, Idaho and the surrounding region. The data set was derived from Landsat data and the National Land Cover Database created by the Multi-Resolution Land Characteristics (MRLC) Consortium.

Date of Publication or Submission

6-27-2016

DOI

http://doi.org/10.18122/B2ZW21

Funding Citation

This publication was made possible by the NSF Idaho EPSCoR Program and by the National Science Foundation under award number IIA-1301792.

Data Source Credits

Homer, C.G., Dewitz, J.A., Yang, L., Jin, S., Danielson, P., Xian, G., Coulston, J., Herold, N.D., Wickham, J.D., and Megown, K., 2015, Completion of the 2011 National Land Cover Database for the conterminous United States-Representing a decade of land cover change information. Photogrammetric Engineering and Remote Sensing, v. 81, no. 5, p. 345-354

Single Dataset or Series?

Series

Data Format

*.shp, *.xml

Data Attributes

We utilized the publicly available historical remote sensing data for five different years with a decadal interval: 1974, 1982, 1992, 2001 and 2011. We used Landsat derived land use and land cover maps developed by National Land Cover Database (NLCD) for the last three of the five study years: 1992, 2001 and 2011 (NLCD 2014). Since the focus of the study was urban growth, all the NLCD land cover classes were reclassified into two land classes: urban (developed) and non-urban (undeveloped). The NLCD 1992 dataset was made comparable directly with the data for the other two years by using 1992/2001 retrofit land cover change product as mentioned in Fry et al. (2009). For the years 1982 and 1974, for which NLCD maps are not available, a map of the study area with different land cover classes was delineated each using Landsat satellite images. We applied a supervised classification procedure using various ancillary data before reclassifying the maps into urban and non-urban land classes. The accuracy of delineated urban areas was improved to the maximum possible by geographically tallying the maps with high resolution orthophotos of the study site for respective years. The maps were then converted into vector data format so that patch-based spatial indices could be computed using Patch-Analyst (Rempel et al. 2012) and custom-created ArcGIS scripting tools. Projected Coordinate System: Albers Conical NAD_1983. Attribute definition: Area = Area of each patch/polygon.

Map Area

44.047952N, 42.975526S

Map Area

-115.855445E, -117.093888W

Map Area Coordinate System

GCS_North_American_1983, Projected to NAD_1983_Transverse_Mercator

Time Period

1974, 1982, 1992, 2001, 2011

Privacy and Confidentiality Statement

We are explicitly compliant with federal and state laws surrounding data privacy including the protection of personal financial information through the Gramm-Leach-Bliley Act, personal medical information through HIPAA, HITECH and other regulations. All human subject data (e.g., surveys) has been collected and managed only by personnel with adequate human subject protection certification.

Use Restrictions

Data will be provided to all who agree to appropriately acknowledge the National Science Foundation (NSF), Idaho EPSCoR and the individual investigators responsible for the data set. By downloading these data and using them to produce further analysis and/or products, users agree to appropriately acknowledge the National Science Foundation (NSF), Idaho EPSCoR and the individual investigators responsible for the data set. Use constraints: Acceptable uses of data provided by Idaho EPSCoR include any academic, research, educational, governmental, recreational, or other not-for-profit activities. Any use of data provided by the Idaho EPSCoR must acknowledge Idaho EPSCoR and the funding source(s) that contributed to the collection of the data. Users are expected to inform the Idaho EPSCoR Office and the PI(s) responsible for the data of any work or publications based on data provided.

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