Arsyad, Usman
Fakultas Kehutanan, Universitas Hasanuddin

Published : 6 Documents
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Kesesuaian dan Arahan Penggunaan Lahan Berdasarkan Rencana Pola Ruang Wilayah di Hulu Daerah Aliran Sungai Kelara

Jurnal Hutan dan Masyarakat VOLUME 9 NOMOR 2, DESEMBER 2017
Publisher : Fakultas Kehutanan, Universitas Hasanuddin

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Abstract

This study aimed to analyze the compatibility between the land cover spatial pattern plan and determine the direction of land use in the event of a discrepancy. This research was conducted on the Kelara Upstream Watershed located in gowa and jeneponto using land cover maps generated from landsat imagery interpretation 8. Then overlay to map the spatial pattern plan. Then determined the order of land use is done when there is a discrepancy between the results of the overlay with maps of land cover spatial pattern plan. The result showed that 41,05% of the total area of the Kelara Upstream Watershed of 28.185,68 ha a land use form of a orchards. After overlay discovered discrepancy land cover maps with maps of spatial pattern plan. Based on a map spatial pattern plan that should in reality the field is man made forest, orchards, dryland agriculture and rice field. According to these condition the specified order of land use that is Hkm (Community Forest) with agroforestry and Agroforestry Systems. Rice field In the Protected and Production forest order to intensification land use and plantations forest, orchards and dry land agriculture order to Community Forest with agroforestry systems . In the area of cultivation the land use rice field, orchards and dryland agriculture order to agroforestry systems.

Identifikasi Daerah Resapan Air di Sub Daerah Aliran Sungai Malino Hulu Daerah Aliran Sungai Jeneberang Kabupaten Gowa

Jurnal Hutan dan Masyarakat VOLUME 9 NOMOR 2, DESEMBER 2017
Publisher : Fakultas Kehutanan, Universitas Hasanuddin

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Abstract

Population increase encourages people to change land use in Malino sub watershed. The forest area converted into non-forest areas such as agricultural or settlements. This study aims to determine the status and potential of water absorbtion region. This research was conducted in the Malino sub watershed maps using land units derived from overlapping maps of slope, soil type, rainfall and land use. Moreover, the determination of the water absorbtion region refer to the Technical Plan for Forest and Soil rehabilitation - basin. The results showed that up to 27,05% of the total Malino Sub Watershed is critical condition, normal condition as much as 49,70% and a good conditions as much as 23.25%.  The Malino sub watershed still good potential to absorb water. In natural conditions, the use of land as dry bush agriculture to intervene it is advisable to agroforestry or timber planted with long lasting in order to be a good absorbtion region, while for normal condition advised to planting of agroforestry with pattern alley cropping.

Pola Penggunaan Lahan Berdasarkan Kelas Kemampuan Lahan di Sub-sub DAS Kunisi Hulu DAS Jeneberang Kabupaten Gowa

Jurnal Hutan dan Masyarakat VOLUME 10 NOMOR 1, JULI 2018
Publisher : Fakultas Kehutanan, Universitas Hasanuddin

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Abstract

The research aims to determine the extent of land use suitability with land capability in Kunisi subs watershed of Jeneberang’s upstream watershed. This research is expected to provide guidelines and consideration for related institution in conducting socialitation and enlightment in the field of soil conservation for farmers at Manimbahoi and Bilanrengi Village of Gowa regency. The method used in this study was image analysis by using software GIS and field observations conducted in Kunisi subs watershed of Jeneberang’s upstream watershed. The research was carried from December 2014 to January 2015. The results showed that the uses of land in the subs watershed of Kunisi were for forest, gardens, rice fields, and shrubs with various level of land capability qualification IIIE, IIIb, IIIk, IVe, IVl, Vp, VIl, and VIIl. In the land unit found in the field there was mismatch land capability and land use. Such discrepancy can be resolved by restoring the function of land use based on its relevance and implement appropriate soil conservation techniques based on land capability classes

Karakteristik Tanah Longsor di Daerah Aliran Sungai Tangka

Jurnal Hutan dan Masyarakat VOLUME 10 NOMOR 1, JULI 2018
Publisher : Fakultas Kehutanan, Universitas Hasanuddin

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Abstract

Landslides occur as a result of ground movement on steep slopes, and the high humidity (moisture), and the sparse vegetation (open land). The Local conditions is an interrelated components. The process of landslides can be explained that the water soak into the soil will add weight to the ground. If the water penetrates the soil acts as a watertight sliding plane, the ground becomes slippery and soil weathering on it will move to follow the slope. This study aims to determine the type of landslide, landslide characteristics and landslides causing factors. This research was conducted in September 2015 in Watershed Tangka. The study consisted of three stages, namely the determination of the coordinates of the location of the landslide, landslide determining the location of the sample, the determination of the type of landslide, slope measurements, measurements of the dimensions of landslide and infiltration. Research results obtained are the coordinates of the location of as many as 17 points landslide, landslide types of translation and rotation, land cover and soil texture. There is no difference in the type of soil, infiltration rate, vegetation, geologi, slope and rainfall in both types of landslide are found. 

Analysis of biogeophysics characteristics and discharge of Lompo Riaja Atas river and Lompo Riaja Bawah river, Ralla sub watershed

Jurnal Penelitian Kehutanan Wallacea Vol 8, No 1 (2019): Jurnal Penelitian Kehutanan Wallacea
Publisher : Environment and Forestry Research and Development Institute of Makassar

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Abstract

The biogeophysical characteristics of watersheds have an important role as a determinant of the river discharge amount in the watershed. Various watershed problems such as flood and drought related to river discharge require data and information. The importance of this data and information will determine a better watershed management plan. The issue of flooding and drought are the important issues in Ralla sub watershed, Souht Sulawesi Province. This study aims to describe the biogeophysical characteristics and the discharge of Lompo Riaja Atas and Lompo Riaja Bawah Rivers in Ralla sub watershed, Lisu Watershed. This research was conducted in from November 2016 to August 2017. Primary data collection was done through river discharge and precipitation measurements during 34 days of observation. Secondary data obtained from government or related agencies such as geological data obtained from Geological map of the Ujung Pandang sheet 1982, the slope data from Aster DEM, land type from RePPProt 1987, land cover data from google earth image 2015. A quantitative descriptive method was used to analyze the data obtained. The results showed that the Lompo Riaja Atas and Lompo Riaja Bawah rivers have relatively similar discharge fluctuation, although they have a different amount of discharge. River discharge of both rivers is more influenced by rainfall compared to biogeophysical conditions such as geology, topography, soil type, watershed area, watershed shape, river length and order, gradient, flow pattern, flow density, and land cover.

Indikator Kinerja dan Peran Stakeholder dalam Pengelolaan Daerah Aliran Sungai (DAS) Lisu

Jurnal Hutan dan Masyarakat VOLUME 10 NOMOR 2, DESEMBER 2018
Publisher : Fakultas Kehutanan, Universitas Hasanuddin

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Abstract

Various community activities that have occurred in the Lisu Watershed have seemed irregular and unregulated. This can be seen in the management of the Lisu watershed, which has not been used thoroughly from policy, implementation to evaluation and monitoring in the management of the Lisu watershed. The emergence of various problems and conflicts between various interests in its management. So the purpose of this study is how to analyze collaboration and stakeholder synergy in natural resource management in the Lisu Watershed. This research was conducted with descriptive exploratory analysis method on the activities of stakeholders who will collaborate in the management of the Lisu watershed, and how to identify performance indicators. The results obtained in this study are the overlapping functions, duties and responsibilities and authority in the management of the Lisu watershed. Related stakeholders have not been based on effectiveness, namely the goals and objectives in improving the quality of the Lisu watershed, causing a conflict of interest and lack of coordination. Another obstacle faced by stakeholders in collaborating and synergy is the disagreement of some stakeholders in integrating watershed management whose management is from upstream, middle and downstream of the Lisu watershed. The recovery policy in the Lisu Watershed is needed in realizing and building integrated watershed management patterns in collaboration and stakeholder synergy. As well as the need for a change of management paradigm as well as institutional strengthening in the management of the Lisu Watershed.