Detection of Area Usage in Semarang City using SIG

Abstract

Together with the development of a region rapidly, the informtion of geography also changes, ang the way of map production needs a long term process. To perform the complete map with its information easily, it can be usage geography information system. The change of area usage can be calculated from the addition and subtraction of area. The detection of semarng city area usage ha been carried out for thirteen years (1993-2006) based on data avaibility with scale variety and data source. The primary data consists of a map of the Semarang City in 2000, Semarang city usage map 1993, Semarang city usage map 2006 and layout of semarang city plan 2001-2010. Detection of area usage using geography information system of research study region is done based on the classification of National Land Organization which are classified into nine classes, which are forest industry, service, settlement, water area, company, rice-fieid, embankment and dry-field. From this research, it can be found out that there was area usage change from the year of 1993 until the year of 2006 which comprised of forest 1.38%, industry 1.66%, service 5.00%, settlement 8.21%, water area 0.33%, company 1.96%, rice-field 10.42%, embankment 5.47% and dry-field 9.10%. Meanwhile, the deviation of area usage in the year of 2006 with area layout planning in the year of 2001-2010 was dry-field 24.74% more than it is supposed to be. While, the deviation that is less than government planning by city government, is rice-field, the usage as big as 3.64%. Key words: The analysis of area usage change, geography information system.