Assessment of Spatial Distribution of Land Based on Analysis of Slope and Water Conservation Programs

Dinar, Dwi Anugerah Putranto and Titis, Pratami and Ruana, Indah Permata (2017) Assessment of Spatial Distribution of Land Based on Analysis of Slope and Water Conservation Programs. In: International Conference on suitainaible agriculture (ICOSA), 17-18 January 2017, University of Muhammadiyah Yogyakarta.

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Abstract

Soil erosion has tremendous impacts on most river systems. However, often accelerated by human activities, such as processing of agricultural land that is not suitable, clearing of forest land for mining activities and so on. This paper uses a spatially-explicit model to identify the sediment sources and delivery paths to channels and link these sediment supply processes to in-channel sediment transport and storage. The paper analyzes hill slope erosion and deposition rates using the Unit Stream Power Erosion and Deposition model in a GIS to estimate patterns of sediment supply to rivers in order to predict which portions of the channel network are more likely to store large amounts of fine sediments and thus are most sensitive to the effects of on and off-site soil erosion. This study focuses on the central Lematang area, Watershed of Lematang, Regional Unit of Musi River Basin, in Indonesia. The sedimentation influence has affected water quality and cause silting river that causes water to irrigation capacity is reduced. These predictions have been tested by sampling the fine sediment content of the streambed at key locations along the channel network and comparing the observed patterns to those predicted by the soil erosion model. From the analysis results obtained that the potential value erosion is highest on the slope 8-15% and the sediment was carried away on a rather steep slope 15-25%. Location erosion largest in the region irrigated by 2.139 ton/ha/year, at the largest of slope magnitude of erosion of 1,823 ton/ha/year with the yellow podzolic alluvial soil types. Kewords : Erosion, spatial, sediment, USPED

Item Type:	Conference or Workshop Item (Paper)
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD1-1066 Environmental technology. Sanitary engineering
Depositing User:	Dr. Ir. Dinar Dwi Anugerah Putranto
Date Deposited:	03 Jan 2020 05:10
Last Modified:	03 Jan 2020 05:10
URI:	http://repository.unsri.ac.id/id/eprint/7568

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