Afandi, . and Rosadi, Bustomi and MAryanto, - and Nurarifani, - and Utomo, Muhajir and Senge, Masateru and Adachi, Tadashi (2002) Sediment Yield from Various Land Use Practices in a Hilly Tropical Area of Lampung Region, South Sumatra, Indonesia. J. Jpn. Soc. Soil Phys., 91. pp. 25-38.

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Sediments transported from various land uses and entrapped by natural vegetative filter were measured from January to November +333 in a hilly humid tropical area of Lampung, South Sumatra, Indonesia. A very simple sediment trap made from a PVC pipe with diameter of +*.3 cm was designed for measuring the sediment yield. Five types of land uses were chosen as follows : (a) co#ee garden in multistrata system followed by rain-fed agriculture and grass filter, (b) mixed-co#ee garden followed by short shrub filter, (c) clean-weeded co#ee garden followed by long shrub filter, (d) clean-weeded co#ee garden, and (e) secondary forest followed by new forest remnant. The measurement during eleven months showed that the mixed-co#ee garden produced the highest sediment yield (1+3.1g/m,), and the lowest sediment yield was derived from secondary forest area (*.*2g/m,). The sediment yield from clean-weeded co#ee system was around 3-..�,13.1 g/m,, and multistrata system indicated a low sediment yield (,.- g/m). Although mixed-co#ee garden showed a very high yield of sediment, natural vegetative strips entrapped 33.1� of the sediment. The vegetative filter zone covered with grass (+./ m long) and short shrubs (- m in length) could entrap 3-./� and 33.1� of sediment respectively, and the long shrub filter (+, m in length) could entrap only /,./� of the sediment due to the concentrated flow in the longer slope. The surface cover condition of the land use system and farming activities (weeding, tillage, fertilizer application) indicated a high contribution on sediment yield than the other erosion factor. ,

Item Type: Article
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian (FP) > Prodi Ilmu Tanah
Depositing User: AFANDI
Date Deposited: 28 Oct 2016 07:00
Last Modified: 28 Oct 2016 07:00

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