AEB Volume 14, Number 4: April, 2020

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Evaluation of suitability of land use to area function direction in Tangka Watersheds, South Sulawesi, Indonesia

Muh. Aqsa Jamaluddin, Usman Arsyad, Muchtar Salam Solle

Abstract Watersheds have various benefits for life, including the use of water for irrigation, agriculture, household consumption, river transportation, and other needs. However, if there is no proper management in the watershed, it will have an adverse impact or threat of disasters such as floods, erosion and landslides. Thus the purpose of this study is to examine the suitability of land use to the direction of the function of the area in the Tangka watershed. Secondary data collection in the form of land type data, rainfall, slope and land use was conducted in December 2019. The method used in this study is the Geographic Information System method with scoring and overlay techniques using ArcGIS software. The results showed that there was 39,325.80 Ha (81.50%) land-use area that was still under the direction of the area's function and land use that was not under the course of the area's function had an area of 8,925.86 Ha (18.50%). One of the causes of land use mismatch is the lack of community understanding of the spatial and territorial patterns in the Tangka watershed.

[ FULL TEXT PDF 1-6 ] DOI: 10.22587/aeb.2020.14.4.1

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Measures improving the quality of land former mine as media growing seed trees for the purpose of reclamation

Nurul Anuqrah Waty, Baharuddin Nurkin, Didi Rukmana

Abstract This study aims to analyze the nutrient content of ex-mining land and choose the best type of plants for nursery activities as well as plant growth response to compost and NPK fertilizer. This research provides information about the nutrient content available in the former nickel mining land and to find out the types of plants that are good for planting in the old mining area as well as the interaction of plants with planting media. This research is located in the Former Mining Area of PT Kreative Jaya, North Kolaka Regency, South Sulawesi. This type of analysis uses quantitative descriptive methods in the form of field data collection, namely height, diameter, and several plant leaves; field data processing; and laboratory analysis to determine the root shoot ratio. The research method used is orthogonal contrast analysis with two factors and three repetitions. The first factor is the composition of the planting media (ex-mining land (T0), ex-mining land + 1.25 kg compost (T1) and 1.5 kg (T2); ex-mining ground + 7 g NPK fertilizer (T3) and NPK 12 g (T4)). The second factor is the type of Acacia auriculiformis (V1), sengon Paraserianthes falcataria (V2), and kuku Pericopsis mooniana (V3). Data were analyzed using analysis of variance and continued with orthogonal contrast test. The results of the analysis of variance showed that the planting media (T) had a significant effect on plant height and number of plant leaves, but had no significant impact on plant stem diameter. Meanwhile, the type of seed (V) significantly affected the increase in plant height, stem diameter, and several plant leaves.

[ FULL TEXT PDF 7-13 ] DOI: 10.22587/aeb.2020.14.4.2

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