PENDUGAAN EROSI DI SUB-SUB DAS KHILAU SUB DAS BULOK DAS SEKAMPUNG
| Main Author: | SELIN HANDAYANI, 1514151041 |
|---|---|
| Format: | Bachelors NonPeerReviewed Book Report |
| Terbitan: |
FAKULTAS PERTANIAN
, 2019
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| Subjects: | |
| Online Access: |
http://digilib.unila.ac.id/61060/1/1.%20ABSTRAK.pdf http://digilib.unila.ac.id/61060/17/2.%20SKRIPSI%20FULL.pdf http://digilib.unila.ac.id/61060/18/3.%20SKRIPSI%20TANPA%20BAB%20PEMBAHASAN.pdf http://digilib.unila.ac.id/61060/ |
Daftar Isi:
- Sub-sub DAS Khilau merupakan bagian dari DAS Sekampung yang mengalami degradasi lahan yang disebabkan adanya perubahan penggunaan lahan. Perubahan penggunaan lahan tersebut menyebabkan terjadinya erosi di Sub-sub DAS Khilau. Penelitian ini bertujuan untuk menduga besaran erosi yang terjadi pada setiap satuan lahan dan menerapkan tindakan konservasi tanah dan air. Penelitian dilaksanakan Maret-April 2019 di Sub-sub DAS Khilau Sub DAS Bulok DAS Sekampung, untuk menduga erosi digunakan metode Universal Soil Loss Equation (USLE). Hasil penelitian menunjukkan bahwa nilai rata-rata erosi di Sub-sub DAS Khilau sebesar 93, 73 ton/ha/tahun, sedangkan nilai rata-rata erosi pada setiap unit penggunaan lahan di Sub-sub DAS Khilau yaitu unit lahan hutan 1,07 ton/ha/tahun, kebun campuran 87,52 ton/ha/tahun, semak belukar 45,21 ton/ha/tahun, tanaman semusim 271.08 ton/ha/tahun, dan sawah 0,88 ton/ha/tahun. Sub-sub DAS Khilau memiliki kategori indeks bahaya erosi rendah, sedang, tinggi, dan sangat tinggi, untuk mengurangi erosi yang tinggi dan sangat tinggi maka diperlukannya tindakan konservasi tanah dan air. Tindakan KTA pada penggunaan lahan kebun campuran dan semak belukar pembuatan strip cropping+sisa tanaman dijadikan mulsa, sedangkan pada unit lahan tanaman semusim berupa tindakan pengolahan tanah dan penanaman menurut kontur. Kata kunci: Sub-sub Das Khilau, Perubahan penggunaan lahan, Erosi. ABSTRACT ESTIMATION OF EROSION IN KHILAU SUB-SUB WATERSHED BULOK SUB-WATERSHED SEKAMPUNG WATERSHED by SELIN HANDAYANI The Khilau watershed subgroups are part of DAS Sekampung which is experiencing land degradation due to changes in land use. This land use change caused erosion in the Khilau Sub-watershed. This study aims to estimate the amount of erosion that occurs in each unit of land and implement soil and water conservation measures. The study was conducted in March-April 2019 in Khilau Sub-sub Watershed Bulok Sub- Watershed Sekampung Watershed, to predict erosion using the Universal Soil Loss Equation ( USLE ) method. The results showed that the average erosion value in the Khilau Sub-sub watershed was 93.73 tons/ha/year, while the average value of erosion in each land use unit in the Khilau Sub-watershed was the forest land unit 1.07 tons / ha /year, mixed gardens 87.52 tons/ha/year, shrubs 45.21 tons/ha/year, annual crops 271.08 tons/ha/year, and rice fields 0.88 tons/ ha/year. Khilau Sub-sub watersheds have low, medium, high, and very high erosion hazard index categories , to reduce high and very high erosion, soil and water conservation measures are needed. KTA action on land use agroforestry and shrub manufacture of strip cropping + the rest of the plant is made into mulch, whereas in the seasonal crop unit the land is in the form of land management and contour planting . Keywords: Khilau Sub-sub Watershed, Land use change, Erosion.