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All Journal Agroland : Jurnal Ilmu-Ilmu Pertanian Jurnal Tanah dan Iklim
K. MURTILAKSONO
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Agriculture, Biological Sciences & Forestry

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Use of AGNPS Model to Estimate Watershed Scaled Erosion NONO SUTRISNO; S. ARSYAD; HIDAYAT PAWITAN; K. MURTILAKSONO
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 20 (2002): Desember 2002
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n20.2002.%p

Abstract

Method of watershed scaled erosion prediction is different from plot scale erosion prediction. The objective of this study was to predict watershed scaled erosion by measuring sediment yield and using Agricultural Non-Point Source Pollution (AGNPS) model. The plot scale experiment was set in randomized block design with 7 treatments i.e combination of ridges and raised beds. In the experiment, surface erosion was measured with soil pan method, watershed scale erosion (sediment yield) by sampling at the outlet. The method of watershed scale prediction were using AGNPS model. The result shows that AGNPS model was applicable to predict Tugu Utara sub watershed erosion (sediment yield) and simulate its land use management. The simulation of AGNPS model, with crop factor of 0.18 and slope length 5 m significantly reduced watershed erosion. This implies that AGNPS model is reliable to predict Tugu Utara sub watershed erosion and the model proves that watershed erosion is different from plot scale erosion.
DINAMIKA KARBON (C) AKIBAT ALIH GUNA LAHAN HUTAN MENJADI LAHAN PERTANIAN A. Monde; N. Sinukaban; K. Murtilaksono; N. Pandjaitan
Agroland: Jurnal Ilmu-ilmu Pertanian Vol 15, No 1 (2008)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (197.722 KB)

Abstract

Land use changes from forest to agricultural farms have been incessantly occurring in Indonesia. This condition will have harmful effects on nature equilibrium if uncontrolled. Forest can effectively absorbed carbon, in contrast deforestation will result in the release of carbon dioxide (CO2) to the atmosphere. The research results indicated that significant carbon losses have taken place due to forest changes to agricultural farms.  Agro-forestry system can lessen these losses from vegetation, litter, soil and due to soil erosion. Agricultural farm with maize and peanut produced lower carbon than forest and vanilla agro-forestry.
Co-Authors A. Monde Hidayat Pawitan N. Pandjaitan N. Sinukaban Nono Sutrisno S. Arsyad