Arifin, Syamsul and Dr. Ery Suhartanto, ST., MT. and Dr. Ir. Ussy Andawayanti, MS. (2021) Analisis Pola Perubahan Penggunaan Lahan Dengan Land Change Modeler Untuk Prediksi Erosi Dan Sedimen Di Das Amprong. Magister thesis, Universitas Brawijaya.
Abstract
Sungai Amprong merupakan salah satu anak sungai Brantas. Dengan titik tinjau DAS di Bendung Kedung Kandang luas DAS Amprong ± 252.94 km². Perubahan penggunaan lahan dapat terjadi karena pertumbuhan penduduk yang terus meingkat menyebabkan permintaan akan lahan semakin tinggi baik untuk permukiman maupun kegiatan perekonomian lainnya. Tujuan penelitian ini untuk mengetahui dinamika perubahan penutupan/penggunaan lahan di DAS Amprong periode tahun 2008 sampai dengan 2018 serta prediksinya prediksinya tahun 2028 terhadap erosi dan sedimentasi. Pemodelan perubahan penggunaan lahan menggunakan software Idrisi Selva sedangkan analisa erosi dan sedimentasi dilakukan dengan menggunakan pemodelan Soil Water Assesment Tool (SWAT) Perubahan penutupan/penggunaan lahan di DAS Amprong diinterpretasi dari citra Landsat tahun 2008, 2013 dan 2018. Dari hasil analisa dan pemodelan tutupan lahan dapat diketahui bahwa dinamika perubahan tutupan lahan di DAS Amprong dari tahun 2008, tahun 2013, tahun 2018, dan tahun 2028. Tren perubahan tutupan lahan hutan dari tahun 2008, 2013, dan 2018 terus mengalami penurunan dengan rata-rata 11.69% dari total tutupan lahan tahun 2008. Hal ini berbading terbalik dengan tutupan permukiman yang selalu meningkat, adapun peningkatan rata-rata 9.29%. Sedangkan perubahan tutupan lahan tahun 2018 dan prediksi tutupan lahan tahun 2028 perubahan tutupan lahan hutan berkurang 21.40%, kebun berkurang 4.33%, lahan terbuka berkurang 42.11%, permukiman bertambah 46.47%, sawah bertambah 0.60%, dan semak belukar bertambah 4.63% mempunyai nilai kesepakatan sangat baik berdasarkan uji validasi menggunakan Kappa Index of Agreement menunjukan nilai Kstandard 0,85 dinyatakan bahwa pemodelan diterima secara ilmiah. Hasil pemodelan hidrologi dengan tutupan lahan tahun 2018 pada DAS Amprong bahwa sedimen yang ada di DAS Amprong sebesar 1.021.237,49 ton/ha/tahun dan erosi 752.973,95 ton/ha/tahun. Sedangkan pemodelan hidrologi dengan tutupan lahan tahun 2028 untuk sedimen yang ada di DAS Amprong sebesar 1.886.689,64 ton/ha/tahun dan erosi 1.069.631,09 ton/ha/tahun.
English Abstract
Amprong River is one of the tributaries of the Brantas River. With a watershed observational/review point at the Kedung kandang Dam, the Amprong watershed has an area of ± 252.94 km². Changes in land use can occur among others population growth that continues to increase causing the demand for land to be higher both for settlements and other economic activities. The purpose of this study is to determine the dynamics of land cover/use change in the Amprong watershed for the period 2008 to 2018 and its predictions in 2028 on erosion and sedimentation. Modelling of land use change using Idrisi Selva software while analysis of erosion and sedimentation is carried out using the Soil Water Assessment Tool (SWAT) modelling. Changes in land cover in the Amprong watershed interpreted from Landsat images in 2008, 2013 and 2018. From the results of land cover analysis and modelling, it can be seen the dynamics of land cover change in the Amprong watershed from 2008, 2013, to 2018, and 2028. The trend of forest mixed cover change from 2008, 2013, and 2018 continued to decline with an average of 11.69% of the total land cover in 2008. This is inversely proportional to the settlement cover which is always increasing, as for the average increase is 9.29%. Meanwhile, land cover changes in 2018 and predictions of land cover in 2028 are as follows: change in forest mixed cover decreased by 21.40%, agricultural land generic decreased by 4.33%, open field decreased by 42.11%, urban increased by 46.47%, rice increased by 0.60%, and range brush increased by 4.63 %. This has a very good agreement value based on the validation test using the Kappa Index of Agreement which shows a K standard value of 0.85, this means that the modelling is scientifically accepted. The results of hydrological modelling with land cover in 2018 in the Amprong watershed show that the sediment in the Amprong watershed amounted to 1.021.237,49 tons/ha/year and the erosion equal to 752.973,95 tons/ha/year. Meanwhile, hydrological modelling with land cover in 2028 for sediments in the Amprong watershed amounted to 1.886.689,64 tons/ha/year and the erosion equal to 1.069.631,09 tons/ha/year.
Other obstract
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| Item Type: | Thesis (Magister) |
|---|---|
| Identification Number: | 0421070004 |
| Uncontrolled Keywords: | Keywords: DAS Amprong, Erosi, Sedimentasi, Idrisi Selva, Arcswat 2012 |
| Subjects: | 600 Technology (Applied sciences) > 627 Hydraulic engineering > 627.5 Reclamations, Irrigation, related topics > 627.52 Irrigation |
| Divisions: | S2/S3 > Magister Teknik Pengairan, Fakultas Teknik |
| Depositing User: | yulia Chasanah |
| Date Deposited: | 03 Jun 2022 02:44 |
| Last Modified: | 16 Jun 2022 02:25 |
| URI: | http://repository.ub.ac.id/id/eprint/190808 |
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