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- Okin, Gregory S.
- Ecology 2010 v.91 no.3 pp. 743
- ecosystems; growing season; moderate resolution imaging spectroradiometer; periodicity; reflectance; semiarid zones; senescence; shrublands; Southwestern United States
- ... Indices of vegetation dynamics that include both green vegetation (GV) and non-photosynthetic vegetation (NPV), that is, brown vegetation, were applied to MODIS surface reflectance data from 2000 to 2006 for the southwestern United States. These indices reveal that the cover of NPV, a measure of vegetation brownness and a component of ecosystems worldwide, is highly variable in both space and time ...