Quantifying Tropical Wetlands Using Field Surveys, Spatial Statistics and Remote Sensing

Salari, A. and Zakaria, M. and Nielsen, C.C. and Boyce, M.S. (2014) Quantifying Tropical Wetlands Using Field Surveys, Spatial Statistics and Remote Sensing. Wetlands, 34 (3). pp. 565-574.

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Tropical wetlands support high biodiversity and ecological services, but in most areas they suffer from a paucity of baseline data to support management. We demonstrate how modern technology can be used to develop ecological baseline data including, landuse/landcover, water depth, water quality, lake-level fluctuation, and normalized difference vegetation index (NDVI). For the first time we quantified and mapped these metrics for the Paya Indah Wetlands, Malaysia using the new high-spatial-resolution World View 2 imagery. Landuse/landcover classifications were validated by field visits and visual interpretation of the imagery. NDVI was extracted based on red and near infra-red 2 bands. Topo to Raster method was used for interpolation of water depths. Annual mean of a water-quality index and annual water-level fluctuation of lakes were interpolated across lakes using the inverse-distance weighting method. Qualitative and quantitative accuracy assessment of classification (75 % overall accuracy, user’s accuracies ranged from 60 % to 90 % and producer’s accuracy ranged from 60 % to 97 %) was promising and clearly illustrated that World View 2 imagery can yield fast and reasonably precise identification of ecosystem characteristics for ecological baselines

Item Type: Article
Uncontrolled Keywords: Interpolation, Landuse/Landcover, Malaysia, NDVI, Paya Indah Wetlands
Author Affiliation: Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada
Subjects: Atmosperic Science
Environmental Science
Divisions: General
Depositing User: Ms Ishrath Durafsha
Date Deposited: 03 Jun 2014 06:13
Last Modified: 03 Jun 2014 06:13
Official URL: http://dx.doi.org/10.1007/s13157-014-0524-3
URI: http://eprints.icrisat.ac.in/id/eprint/13224

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