National Park Service

Inventory & Monitoring (I&M)

Metrics

At its core, NPScape delivers a suite of metrics that are considered integral to understanding natural resource conservation in a landscape context. Current NPScape metrics fall into seven major measure categories (human population, housing, roads, land cover, pattern, climate, and conservation status) that broadly address the human drivers, natural systems, and conservation context of national parks and other neighboring lands. NPScape metrics are summarized in the table below, along with the year, spatial resolution, and geographic coverage of the GIS Data. See NPScape Methods for important details concerning metric calculations, including source data and areas of analysis.

Geographic Coverage*
Measure Metric Years Resolution AK CONUS PAC CAR MEX CAN
Population Current: total and density 1990, 2000, 2010 Census Block Groups X X X X
Historic: total and density 1790-1990, by decade County X
Projected: total and density 2010-2050 (varies), by decade County X X X
Housing Housing density 1970-2100, by decade 100m cells X
Roads Roads density Varies, up to 2010 Varies X X X X X
Distance from roads Varies, up to 2010 Varies X X X X X
Area without roads Varies, up to 2010 Varies X X X X X
Landcover Natural vs Converted 2001, 2005, 2006, 2007, 2010, 2011 30m, 250m cells X X X X X X
Anderson Level I, II 2001, 2005, 2006, 2007, 2010, 2011 30m, 250m cells X X X X X X
Impervious Surface 2006, 2011 30m cells X X
Pattern Patch size 2005, 2006, 2011 30m, 250m cells X X X X
Morphology 2005, 2006, 2011 30m, 250m cells X X X X
Area density 2005, 2006, 2011 30m, 250m cells X X X X
Climate Mean Varies, 1895-present (day, month) Varies, ~770m to 17km cells X X X X X X
Mean water year Varies, 1895-present (day, month) Varies, ~770m to 17km cells X X X X X X
Percentile Varies, 1895-present (day, month) Varies, ~770m to 17km cells X X X X X X
Zonal statistics Varies, 1895-present (day, month) Varies, ~770m to 17km cells X X X X X X
Conservation Status Area protected Varies Varies X X X X X X
Ownership Varies Varies X X X X X X

*AK is Alaska; CONUS is the Lower 48 states; PAC is Pacific Islands (Hawaii, Guam, Northern Mariana Islands, and/or American Samoa); CAR is Caribbean (Puerto Rico and/or US Virgin Islands); MEX is Mexico; CAN is Canada.




⇑ To Top of Page

Last Updated: September 05, 2014 Contact Webmaster