Comparison of remote sensing indices for monitoring of desert cienegas
| Autor: | Natalie R. Wilson, Miguel L. Villarreal, Andrew M. Salywon, Leila Gass, Ron Tiller, Laura M. Norman |
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| Rok vydání: | 2016 |
| Předmět: |
Hydrology
geography geography.geographical_feature_category 010504 meteorology & atmospheric sciences Aquatic ecosystem 0208 environmental biotechnology Soil Science Wetland 02 engineering and technology Enhanced vegetation index Vegetation 01 natural sciences Normalized Difference Vegetation Index 020801 environmental engineering Thematic Mapper Dry season Environmental science Ciénega 0105 earth and related environmental sciences Remote sensing |
| Zdroj: | Arid Land Research and Management. 30:460-478 |
| ISSN: | 1532-4990 1532-4982 |
| DOI: | 10.1080/15324982.2016.1170076 |
| Popis: | This research considers the applicability of different vegetation indices at 30 m resolution for mapping and monitoring desert wetland (cienega) health and spatial extent through time at Cienega Creek in southeastern Arizona, USA. Multiple stressors including the risk of decadal-scale drought, the effects of current and predicted global warming, and continued anthropogenic pressures threaten aquatic habitats in the southwest and cienegas are recognized as important sites for conservation and restoration efforts. However, cienegas present a challenge to satellite-imagery based analysis due to their small size and mixed surface cover of open water, exposed soils, and vegetation. We created time series of five well-known vegetation indices using annual Landsat Thematic Mapper (TM) images retrieved during the April–June dry season, from 1984 to 2011 to map landscape-level distribution of wetlands and monitor the temporal dynamics of individual sites. Indices included the Normalized Difference Vegetati... |
| Databáze: | OpenAIRE |
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