Digital Library: No conditions. Results ordered -Date Deposited. 2024-03-29T06:30:42ZEPrintshttp://digilib.unila.ac.id/images/sitelogo.pnghttp://digilib.unila.ac.id/2015-10-22T09:30:46Z2015-10-22T09:30:46Zhttp://digilib.unila.ac.id/id/eprint/13400This item is in the repository with the URL: http://digilib.unila.ac.id/id/eprint/134002015-10-22T09:30:46ZGEOSPATIAL ANALYSIS OF LAND USE AND LAND COVER CHANGE
FOR DISCHARGE AT WAY KUALAGARUNTANG WATERSHED IN
BANDAR LAMPUNGABSTRACT
GEOSPATIAL ANALYSIS OF LAND USE AND LAND COVER CHANGE
FOR DISCHARGE AT WAY KUALAGARUNTANG WATERSHED IN
BANDAR LAMPUNG
BY
FIENI YUNIARTI
Land use and land cover change in a watershed might drive some impacts, such as
high amounts of discharge fluctuations. Way Kuala Garuntang Watersheed is one
of watershed in Bandar Lampung that has changed significantly. This study
analyzed land use and land cover change to determine how much its influence on
discharce fluctuations based on Geographics Information System. The method
used in this study comprised of hidrology, spatial and sensitivity analysis.
Hidrology analysis based on daily rainfall data. Spatial data analysis aims to
present geospatial data related effects of land use and land cover change on the
value of discharge. Sensitivity analysis is done by creating a land use and land
cover simulation scenarios and sees its effect on the peak discharge events.
The results of hidrology analysis in this study showed that the rainfall data
obtained from the rainfall stations around the watershed were inconsistent and it
needs to be repaired. It was found that the pattern of rainfall distribution in Bandar
Lampung for 4 hours consists of 40%, 40%, 15% and 5% pattern. The results of
spatial analysis in this study showed that there are 11 types of land cover on the
existing condition and only has a protected area covering 4.72% of the total
watershed. From the results of the sensitivity analysis showed that land use
scenario with availability less than 30% of the area of green open space watershed
may cause an increase in the value of the peak discharge. Instead, the scenario to
maintain a 30% green open spaces of wide watershed did not make a significant
change in peak discharge. This action is necessary to provide enough space for the
infiltration of rain water on a particular area for the purpose of supplying the
needs of ground water and flood control
.
Keywords : land use and land cover change, discharge, Way Kuala Garuntang FIENI YUNIARTI 1025011005