Pemodelan Hujan Netto Berdasarkan Tutupan Lahan untuk Analisa Debit Aliran Rendah

Adhi Yanuar Avianta, Rispiningtati Rispiningtati, Lily Montarcih Limantara


This research intends to investigate the land cover change and to obtain the canopy interception in the Lesti sub-watershed, and to produce the rainfall-discharge modeling as the function of net rainfall factor. The methodology consisted of identifying the land cover based on the Normalized Difference Vegetation Index (NDVI) classification of digital satellite images Landsat TM 7 and TM 8, carrying out the field study to obtain the canopy interception used a volume balance approach. The interception rate of Lesti sub-watershed are 5 – 7 % in everage of rainfall, the net-rainfall models of Lesti sub-watershed are Pnetto= P - (-1E07P² + 0.059P +0.260) for land clasification II and Pnetto = P – (-1E07P² + 0.199P + 0.16) for land clasification III, it used as the input on the rainfall-discharge modeling of F.J. Mock, the result showed that the use of net-rainfall on the rainfall-discharge modeling of F.J. Mock increased the accuracy of generated discharge which is strongly influenced by the proportional of land classification.


canopy interception; net rainfall; rainfall-discharge; FJ Mock

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Asdak, C., Jarvis, P.G., Van Gardingen, P. dan Fraser, A., 1998, Rainfall interception loss in unlogged and logged forest areas of Central Kalimantan, Indonesia, J. Hydrology 206: 237-244.

Bruijnzeel, L.A., 1990, Hydrology of moist tropical forest and effects of conversion:A stage of knowledge review, UNESCO International Hydrological Programme & Free University, Amsterdam

Herwitz, R.S. dan Slye, R.E, 1992, Spatial Variability In The Interception Of Inclined Rainforest By a Tropical Rainforest Canopy, Selbyana, 13: 62-71.

Klinge, R., Schmidt, J. dan Folster, H, 2001, Simulation of water drainage of a rain forest and forest conversion plots using a soil water model, Journal of Hydrology, 246: 82-95.

Schellekens, J, 2000, The interception and runoff generation processes in Bisley catchment, Luquillo Experimental Forest, Puerto Rico, Physical Chemistry Earth (B) 25(7-8): 659-664.

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