Evaluating Change in Rangeland Condition using Multitemporal AVHRR Data and Geographic Information System Analysis

TitleEvaluating Change in Rangeland Condition using Multitemporal AVHRR Data and Geographic Information System Analysis
Publication TypeJournal Article
Year of Publication1999
AuthorsMinor TB, Lancaster J, Wade T., Wickham JD, Wickham JD
JournalEnvironmental Monitoring and Assessment
Volume59
Issue2
Pagination211–223
Date PublishedNovember 1999
Keywordsanalysis, GIS, multitemporal, NDVI, Rangeland condition, remote sensing
Abstract

Coarse-scale, multitemporal satellite image data were evaluated as a tool for detecting variation in vegetation productivity, as a potential indicator of change in rangeland condition in the western U.S. The conterminous U.S. Advanced Very High Resolution Radiometer (AVHRR) biweekly composite data set was employed using the six-year time series 1989–1994. Normalized Difference Vegetation Index (NDVI) image bands for the state of New Mexico were imported into a Geographic Information System (GIS) for analysis with other spatial data sets. Averaged NDVI was calculated for each year, and a series of regression analyses were performed using one year as the baseline. Residuals from the regression line indicated 14 significant areas of NDVI change: two with lower NDVI, and 11 with higher NDVI. Rangeland management changes, cross-country military training activities, and increases in irrigated cropland were among the identified causes of change.

URLfiles/bibliography/99-EnvironlMonitoring&Assessment-Whtiford.pdf
DOI10.1023/A:1006126622200