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Erosion Hazard Level And Design Of Soil Conservation For Flood Mitigation In The Arui Watershed, Indonesia Mahmud, Mahmud; Mutakim, Mutakim; Wahyudi, Wahyudi; Dwiranti, Febriza; Endayani, Sri
International Journal of Science and Environment (IJSE) Vol. 4 No. 2 (2024): May 2024
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v4i2.101

Abstract

Excessive surface runoff  is often underestimated concerning flood mitigation. Indeed, flooding has become a recurring disaster in the past 20 years in Indonesia. This research aims to determine the erosion hazard level and develop conservation plans for dryland agriculture and oil palm plantations to mitigate surface runoff, thereby reducing the risk of flooding. The data collected includes hydrology, dryland agricultural areas, oil palm plantations, and topography, which are analyzed based on threats and conservation potential.  Conservation plans that can be implemented include  Minor  Recharge Holes (MRH) in dryland agriculture and dead-end ponds Palm Dead Pond  (PDP) in oil palm plantations. The research results indicate that the MRH design, with a diameter of 1-1.5 m and a depth of 1-1.5 m, still results in surface runoff exceeding 70%. Meanwhile, the PDP design, with a depth of 1-1.5 m and a size of 1-1.5 x 1-1.5 x 7-8 m, yields runoff below 50%, even during extreme rainfall (220 mm), with runoff being only 2%. A change in land use, primarily dominated by dryland agriculture and oil palm plantations, has been a significant factor in triggering flooding in the Arui watershed. In addition to MRH and PDP, five rivers can accommodate surface runoff, which is expected to contribute to long-term flood mitigation in the  Arui watershed.
Shifting cultivation and soil conservation strategies among Papuan communities, Indonesia MAHMUD, MAHMUD; ENDAYANI, SRI; STEFANO, ANDREW; LAKEHU, AMALIA; MUTAKIM, MUTAKIM; WAHYUDI, WAHYUDI; HUSODO, SUSILO BUDI; MOELJONO, SOETJIPTO
Asian Journal of Agriculture Vol. 9 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g090235

Abstract

Abstract. Mahmud, Endayani S, Stefano A, Lakehu A, Mutakim, Wahyudi, Husodo SB, Moeljono S. 2025. Shifting cultivation and soil conservation strategies among Papuan communities, Indonesia. Asian J Agric 9: 671-682. Local Papuan communities in Indonesia, rely heavily on land resources for food security, yet shifting cultivation remains the dominant practice. This system, while traditional, often leads to soil nutrient depletion, reduced productivity, and increased deforestation. To understand the dynamics of local farming practices, this study applied interviews, surveys, and participatory approaches with farmers and community members. Findings reveal that short-term crops such as long beans, peanuts, cabbage, chilies, and sweet potatoes dominate cultivation, contributing to rapid soil fertility loss. In contrast, perennial crops such as Areca catechu, Musa paradisiaca, Nephelium lappaceum, and Artocarpus altilis are typically maintained in fixed plots without being shifted. To address soil degradation, the study proposes several conservation strategies. These include mulching to retain soil moisture, living fences and cover crops to minimize erosion, intercropping to diversify yields and improve nutrient cycling, and the integration of Multipurpose Tree Species (MPTS) and hedgerows to restore long-term soil fertility. Collectively, these measures can reduce the necessity for continuous land clearing and help communities move toward more sustainable sedentary agricultural systems. Beyond technical solutions, the research highlights the importance of strengthening community awareness about forest and soil conservation. Transitioning away from shifting cultivation not only improves land productivity but also contributes to broader ecological resilience. By adopting integrated conservation practices, Papuan farmers can secure food production, maintain forest ecosystems, and develop more sustainable livelihoods in harmony with their environment.