The potential of long-wavelength satellite-borne radar to support implementation of the Ramsar Wetlands Convention

摘要

1. This paper provides an introduction to Synthetic Aperture Radar (SAR) remote sensing and, in particular, the significance of long-wavelength (L-band) SAR for wetland applications relevant to the Ramsar Wetlands Convention. 2. The Convention has long been a supporter of effective wetland inventory being used to support management initiatives and the wise use of all wetlands. 3. Three major application areas have been identified where SAR data may constitute an important additional information source for wetland inventory and management. These comprise mapping of below-canopy inundation, monitoring of environmental disturbances and wetland inventories based on SAR mosaics. These areas have all previously been supported in general terms by formal resolutions on wetland inventory and assessment through the Convention with recognition that further technique development was required. 4. The potential to make further use of remote sensing is increased through wider use of the special features of SAR in situations where other data are less suitable. 5. The Japanese Advanced Land Observing Satellite (ALOS) provides an opportunity to support the Convention and its goal of wise use of all wetlands.