The study was conducted in the coastal Suppa, Pinrang, South Sulawesi, Indonesia. The purpose of the study, to determine the reflectance of mangrove species, the spectrum of visible light, the wavelength region of 400-700 nm and near infrared (NIR) (700-900 nm). Four species are Avicennia marina mangrove, Rhizophora apiculata, Rhizophora mucronata and Sonneratia alba. Reflectance values obtained by using the tool spectroradiometerHR-1024. In the region of the visible light spectrum, the blue wavelengths (400-500 nm), green (500-600 nm), and red (600-700 nm) showed that the highest reflectance values indicated by Rhizophora apiculata with reflectance values respectively 5:42%, 15:29%, and 16:25%. While the reflectance values in the NIR wavelength region (700-900 nm) is indicated by Rhizophora mucronata highest with 85.67% reflectance value. The understanding reflectance characteristics various species of mangrove are very important in the management of mangrove ecosystems.
Keywords: Reflectance; species of mangrove; visible light; near infrared (NIR);
Generally mangroves is a typical species found in areas of tidal and sub-tropical regions around the world. Mangroves form a habitat for many species of flora and fauna, with high density (Murray et al. 2003; Sheridan & Hays, 2003; Liu et al. 2008; Nagelkerken et al., 2008). Mangroves are also important to humans for many reasons, including fisheries, agriculture, forestry, building material resources, protection against coastal erosion and hurricanes, the absorption of pollutants, and to support coastal fisheries (Hogarth 1999; Manson et al. 2005; Walters et al . 2008; Howari et al., 2009).
Throughout the world, the loss of mangroves have been significantly influential in recent decades, although in some areas of mangroves in the world is still a very large forest (Spalding 1998; Alongi 2002). Knowledge to obtain information about the mangrove ecosystem is very important especially in the case of mapping to track the rate...