Mapping the distribution of mangrove species in the Core Zone of Mai Po Marshes Nature Reserve,Hong Kong,using hyperspectral data and high-resolution data |
| |
| Institution: | 1. Global Environmental Change and Earth Observation Research Group, Geography and Environment, University of Southampton, Southampton SO17 1BJ, UK;2. Faculty of Science and Technology, Lancaster University, Lancaster LA1 4YR, UK;3. School of Geography, Archaeology and Palaeoecology, Queen''s University Belfast, Belfast BT7 1NN, Northern Ireland, UK |
| |
| Abstract: | Mangrove species compositions and distributions are essential for conservation and restoration efforts. In this study, hyperspectral data of EO-1 HYPERION sensor and high spatial resolution data of SPOT-5 sensor were used in Mai Po mangrove species mapping. Objected-oriented method was used in mangrove species classification processing. Firstly, mangrove objects were obtained via segmenting high spatial resolution data of SPOT-5. Then the objects were classified into different mangrove species based on the spectral differences of HYPERION image. The classification result showed that in the top canopy, Kandelia obovata and Avicennia marina dominated Mai Po Marshes Natural Reserve, with area of 196.8 ha and 110.8 ha, respectively, Acanthus ilicifolius and Aegiceras corniculatum were mixed together and living at the edge of channels with an area of 11.7 ha. Additionally, mangrove species shows clearly zonations and associations in the Mai Po Core Zone. The overall accuracy of our mangrove map was 88% and the Kappa confidence was 0.83, which indicated great potential of using hyperspectral and high-resolution data for distinguishing and mapping mangrove species. |
| |
| Keywords: | Mangrove species HYPERION SPOT-5 Object-oriented method Mai Po Marshes Nature Reserve Hong Kong |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
