Spatial Evaluation on Wetland Conversion Pattern in Surabaya and Surrounding Areas

Selected Topics in Power Systems and Remote Sensing, 2010


“Government and public awareness in maintaining and protecting the wetland ecosystem has increased recently. This was actualized by the applicable acts or regulations for the conservation of wetland ecosystems. However in reality, since the last two decades, wetland ecosystem in the world has become the most endangered ecosystem due to wetland drainage, pollution and over-exploitation being conducted in various countries. This condition is not appropriate with the Ramsar Convention policy which has been agreed by many countries especially those countries which have ratified this convention. Like in other countries, the existence of Indonesia wetlands area also threatened since they still become target of economic activities and also development. The uncontrolled of wetlands conversion can cause the extinction of those ecosystems. The conversion of wetland ecosystems are also occurred in the artificial wetland such as rice fields and ponds. In general, the conversion of agricultural areas are occurred in the fertile agricultural land which have a good technical irrigation channel. Those areas are converted into residential, industrial and infrastructure. The objective of this research is to explain the spatial phenomena of the evaluation of wetland conversion in Surabaya and surroundings by using the multi-temporal analysis. From the result of the research, it was stated that there are 1.722,68 km2 of wetland ecosystem (76.51% of the total area 2.251,62 km2). Those wetlands consist of fluvial landform (1.302,54 km2) fluvio-marine landform (386,14 km2) and marine landform (34.00 km2). The conversion patterns of those areas are various and controlled by the type of landform.”