ANALYSIS OF THE EFFECT OF LAND USE CHANGES TO DISCHARGE EXTREMITY IN CIKAPUNDUNG WATERSHED
Cikapundung River is one of the sub-watersheds of Citarum watershed. The increasing of population in Cikapundung watershed has resulted in an increase in the need for facilities. Land conversion occurs from changing forest areas to builtup areas. This study aims to identify land use changes in Cik...
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| Format: | Final Project |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/69362 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Cikapundung River is one of the sub-watersheds of Citarum watershed. The
increasing of population in Cikapundung watershed has resulted in an increase in
the need for facilities. Land conversion occurs from changing forest areas to builtup areas. This study aims to identify land use changes in Cikapundung watershed,
identify the trends of discharge extremity in Cikapundung watershed, and analyze
the effect of land use changes on discharge extremity in Cikapundung watershed.
The data used in this study are secondary data, such as rainfall data from Cibiru,
Cipeusing, Dago Pakar-Bengkok, Kayu Ambon, Lembang, and Margahayu rain
stations; river discharge data from Cikapundung-Maribaya and CitarumDayeuhkolot discharge stations; land cover maps in 2014 and 2018; soil type map;
and slope map. Land conversion occurred in the period of 2014 to 2018 in
Cikapundung watershed was an increase in forest land by 0.38%/year out of the
watershed area, a decrease in agricultural land by -1.11%/year out of the
watershed area, and an increase in built-up land by 0.73%/year out of the
watershed area. Meanwhile, land conversion occurred in the upstream of
Cikapundung watershed was an increase in forest land by 0.98%/year out of the
upstream watershed area, a decrease in agricultural land by -1%/year out of the
upstream watershed area, and an increase in built-up land by 0.021%/year out of
the upstream watershed area. The maximum discharge at Cikapundung-Maribaya
and Citarum-Dayeuhkolot discharge stations tended to increase. Meanwhile, the
minimum discharge at Cikapundung-Maribaya discharge station tended to
decrease and the minimum discharge at Citarum-Dayeuhkolot discharge station
tended to increase. This research shows that land use changes affected the
discharge extremity indicated by changes in the runoff coefficient and the flow
regime coefficient which are directly proportional. |
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