KAJIAN EROSI AKTUAL DAN POTENSIAL MENGGUNAKAN PREDIKSI MUSLE (MODIFIED UNIVERSAL SOIL LOSS EQUATION) PADA PERTANIAN LAHAN KERING DTA CITARIK HULU
Sari
Utilization of dry land is an alternative option which is expected to increase the potential for crop production in order to meet food needs, especially in West Java Province. Agricultural development on dry land has one of the main constraints, namely the high level of erosion that is produced because most of the dry land is sloping land which is prone to erosion. Erosion calculations need to be carried out so that the determination of land use and types of conservation measures is applied effectively and efficiently in accordance with field conditions. The purpose of this study is to assess the amount of erosion in the field and potential erosion using the prediction MUSLE (Modified Universal Soil Loss Equation) on a plot measuring 22 x 1 meter with a slope of 5%, 12%, and 15%. The results of the calculation of actual erosion at a 5% slope were 94.3 tonnes / ha, 124.4 tonnes / ha, and 146.7 tonnes / ha. A slope of 12% results in erosion of 104 tonnes / ha, 90 tonnes / ha, and 99.7 tonnes / ha. A slope of 15% produces erosion of 97.6 tonnes / ha, 107.6 tonnes / ha, and 105.8 tonnes / ha. The results of the NSE statistical test (Nash Sutclife Efficiency) calculation of potential erosion before calibration showed unsatisfactory results (NSE <0.50). Therefore, it is necessary to calibrate the value of the plant management factor (C) and the value of the conservation action factor (P). The results of the NSE statistical test after calibration showed good results (0.65 <NSE <0.75) and satisfactory (0.50 ≤ NSE <0.65).
Keywords: Erosion, MUSLE, dry landsTeks Lengkap:
51-57Referensi
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