The measurement of mangrove characteristics in southwest Florida using spot multispectral data |
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| Authors: | John R. Jensen Hongyue Lin Xinghe Yang Elijah Ramsey III Bruce A. Davis Chris W. Thoemke |
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| Affiliation: | 1. Department of Geography , University of South Carolina , Columbia, SC, 29208, U.S.A.;2. U.S. Fish &3. Wildlife Service National Wetland Research Center , NASA/SSC , 101 Gause Blvd., Slidell, LA, 70458, U.S.A.;4. Science and Technology Lab , NASA — Stennis Space Center SSC , Mississippi, 39529, U.S.A.;5. Florida Department of Natural Resources , Rookery Bay National Estuarine Research Reserve , 10 Shell Island Road, Naples, FL, 33962, U.S.A. |
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| Abstract: | An intensive in situ sampling program near Marco Island, Florida during 19–23 October 1988 collected information on mangrove type, maximum canopy height, and percent canopy closure. These data were correlated with selected vegetation index information derived from analysis of SPOT multispectral (XS) data obtained on 21 October 1988. The Normalized Difference (ND) vegetation index information was the most highly correlated index with percent canopy closure (r=0.91). Percent canopy closure information can be used as a surrogate for mangrove density which is of great value when predicting which parts of the mangrove ecosystem are at greatest risk after an oil spill occurs. Such information is very valuable when constructing oil spill Environmental Sensitivity Index (ESI) Maps for tropical regions of the world. |
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