1、Wetlands Regulatory Assistance Program ERDC/TN WRAP-18-1 September 2018 Approved for public release;distribution is unlimited.Unmanned Aircraft Systems(UAS)and Satellite Imagery Collections in a Coastal Intermediate Marsh to Determine the Land-Water Interface,Vegetation Types,and Normalized Differen
2、ce Vegetation Index(NDVI)Values by Whitney P.Broussard III,Glenn M.Suir,and Jenneke M.Visser PURPOSE:The purpose of this project was to evaluate and compare methodologies for using remotely sensed hyperspatial imagery from both Unmanned Aircraft Systems(UAS)and next-generation satellite technology t
3、o calculate species composition and ecosystem service metrics in a coastal intermediate marsh.Such methods would be important steps towards comprehensive monitoring of wetland landscapes and would provide useful metrics to study wetland condition and response to ecosystem restoration and disturbance
4、 events.BACKGROUND:Plant species composition,cover,density,and biomass are structural components of coastal marshes that are commonly used to quantify vegetative characteristics and often serve as indicators of wetland condition(Chamberlain and Ingram 2012;Cretini et al.2012).Historically,regional a
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