Rahman, MahyayaMujibur (2012) Studi Penanganan Konservasi Lahan di Sub DAS Keduang DAS Bengawan Solo Kabupaten Wonogiri. Magister thesis, Universitas Brawijaya.
Abstract
Keberadaan Waduk Gajah Mungkur (WGM) mempunyai fung si utama sebagai pengendali banjir, irigasi, pemasok air minum, dan penghasil tenaga listrik. Namun tahun 2008 terjadi banjir besar di sepanjang aliran Bengawan Solo akibat adanya pendangkalan (sedimentasi). Studi JICA diketahui rata-rata sedimen tahunan periode 1993-2004 sebesar 3,18 juta m3. Sedimen terbesar adalah erosi sungai Keduang yaitu sekitar 33% dari total keseluruhan sedimentasi. Penentuan besarnya laju erosi dan sedimen di Sub DAS Keduang dengan AVSWAT 2000 didapat erosi total sebesar 170,238 ton/ha/tahun. Sedangkan total sedimen yang masuk ke outlet sekitar 57,331 ton/ha/tahun. Selain itu juga hutan yang ada hanya 319,17 ha atau 0,87% dari luas Sub DAS seluruhnya. Penanganan konservasi secara vegetatif berdampak pada kelestarian alam jangka panjang yaitu dengan tanaman tahunan yang produktif dan bernilai ekonomi berupa tanaman kakao, mete, jeruk, tebu, kelapa dan rumput gajah . Sedangkan tindakan konservasi mekanis hanya bersifat sementara seperti membuat bangunan pengendali sedimen atau Check DAM.
English Abstract
The presence of reservoir Gajah Mungkur (WGM) has the primary function as flood control, irrigation, drinking water suppliers, and producing electricity. But the great flood of 2008 occurred along the Bengawan Solo River flow due to siltation (sedimentation). Studi JICA ascertainable average annual sediment 1993-2004 period of 3.18 million m3. Sediment Keduang largest river erosion is about 33% of the total sedimentation. The determination of the rate of erosion and sediment in the sub-watershed Keduang with Erosion AVSWAT 2000 obtained a total of 170.238 tons/ha/year. While the total sediment entering the outlet approximately 57.331 tons/ha/year. In addition, there are forests only 319.17 ha or 0.87% of total sub-watershed. Vegetatif conservation treatment affects the long-term preservation of nature is a perennial plant that productive and economic value of crop Distance, cocoa, cashew, citrus, sugar cane, coconut and grass plants. But mechanical conservation measures only temporary sediment controls such as making DAM.
| Item Type: | Thesis (Magister) |
|---|---|
| Identification Number: | TES/333.731 6/RAH/s/041205186 |
| Subjects: | 300 Social sciences > 333 Economics of land and energy > 333.7 Land, recreational and wilderness areas, energy |
| Divisions: | S2/S3 > Magister Teknik Elektro, Fakultas Teknik |
| Depositing User: | Endro Setyobudi |
| Date Deposited: | 05 Feb 2013 11:30 |
| Last Modified: | 05 Feb 2013 11:30 |
| URI: | http://repository.ub.ac.id/id/eprint/155845 |
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