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Mardan Fajri
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Engineering

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EVALUASI KINERJA DAS DAN SIMULASI KONSERVASI MENGGUNAKAN SWAT (SOIL AND WATER ASSESSMENT TOOL) (StudiKasus : Sub DAS Tapung, Siak, Provinsi Riau) Mardan Fajri; Manyuk Fauzi; Ari Sandhyavitri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Alteration of land use which is happening at left Tapung watershed (DASTapungKiri) is effect to rate of flow of the watershed. Marked by the decreasing offorest area from 15.624,36 ha at 2002 to 12.186,32 ha at 2012. Evaluation ofwatershed condition and performance is needed. Evaluation using (i) Percentageof critical land (PLK) (ii) Percentage of vegetation cover (PPV) (iii) Coefficientregim of flow(KRA) (iv)Coannual of flow (KAT) efficient criteria. Evaluationresult of PLK is 9,82%, PPV 71,6%, KRA 14,28 and KAT 0,45. After receivingexisting evaluation value, conservation simulation using SWAT program is doneby changing a part of open land area and shrub on land use map of 2012 withforest. From simulation result, SWAT model validity parameter R2 is 0,50 andNSE 0,50. These result have satisfied the research objectives as the findingcoefficient were > R2 0,4 and >NSE 0,35 From this simulation, watershedcondition is evaluated again. Evaluation result after doing conservationsimulation are PLK 6,52 % PPV 73,08 % KRA 5,78, and KAT 0,44. Values afterconservation simulation gives better result than the condition before conservationsimulation is done.Keywords: altration of land use, SWAT, watershed performance.
Evaluasi Kinerja DAS Dan Simulasi Konservasi Menggunakan Swat (Soil And Water Assessment Tool) Studi Kasus : Sub DAS Tapung, Siak, Provinsi Riau) Mardan Fajri; Manyuk Fauzi; Ari Sandhyavitri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Alteration of land use which is happening at Tapung watershed (DAS Tapung) is worrying. Marked by the decreasing of forest area from 15.624,36 ha at 2002 to 12.186,32 ha at 2012. Evaluation of watershed condition and performance is needed. Evaluation using (i) Percentage of critical land (PLK) (ii) Percentage of vegetation cover (PPV) (iii) Coefficient regim of flow(KRA) (iv) Coannual of flow (KAT) efficient criteria. Evaluation result of PLK is 9,82%, PPV 71,6%, KRA 14,28 and KAT 0,45. After receiving existing evaluation value, conservation simulation using SWAT program is done by changing a part of open land area and shrub on land use map of 2012 with forest. From simulation result, SWAT model validity parameter R2 is 0,50 and NSE 0,50. These result have satisfied the research objectives as the finding coefficient were > R2 0,4 and >NSE 0,35 From this simulation, watershed condition is evaluated again. Evaluation result after doing conservation simulation are PLK 6,47, PPV 71,6, KRA 5,78, and KAT 0,44. Values after conservation simulation gives better result than the condition before conservation simulation is done.Keywords: altration of land use, SWAT, watershed performance.
Co-Authors Ari Sandhyavitri Syamsul Arifin