Wahyudi Isnan
Balai Penelitian dan Pengembangan Lingkungan Hidup dan Kehutanan Makassar

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Analysis of Characteristics and Typology of Mapili Watershed West Sulawesi Province Wahyudi Isnan; Hasnawir Hasnawir
Jurnal Wasian Vol 5, No 1 (2018): Jurnal Wasian
Publisher : Balai Penerapan Standar Instrumen Lingkungan Hidup dan Kehutanan (BPPLHK)Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jwas.v5i1.4108

Abstract

The multisectoral, multidisciplinary, multi-stakeholder and multidimensional watersheds problems are the consequences of multifunctional watersheds.  The complexity of these problems demanding a system and management approach that appropriate with the characteristics and typology of the watershed. This study aims to analyze the characteristics and typology of Mapili watershed West Sulawesi Province. This research was conducted using surveys, primary, and secondary data collection. Application of geographic information system (GIS) with overlay maps and scoring was used. The results showed that Mapili biogeophysical characterization includes meteorology, morphology, morphometry, hydrology, watershed capability and socioeconomic, cultural and institutional characterization will influence the system of Mapili watershed management. Mapili watershed can be classified into two typology watershed, namely: typology II, which has a low total population density (97 people/km2) with high rainfall (>2500 mm/yr); and typology IV, which has a high total population density (377 people/km2) with low rainfall (<1500 mm/yr). Both typologies have different characteristics of watershed problems. Typology II is generally located in the central area and upstream Mapili and Typology IV are located in the downstream areas of Mapili watershed.Keywords: Watershed characteristic, watershed typology, GIS, Mapili watershed
Perception and Motivation of Farmers in the Development of Natural Silk Business in Soppeng Regency Sulawesi Selatan Wahyudi Isnan; Nurhaedah Muin; Nur Hayati
Jurnal Wasian Vol 6, No 1 (2019): Jurnal Wasian
Publisher : Balai Penerapan Standar Instrumen Lingkungan Hidup dan Kehutanan (BPPLHK)Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jwas.v6i1.4638

Abstract

The development of natural silk has not been optimal because the handling of the problem tends to be general and not adjusted to the socio-economic characteristic of the community. In Soppeng Regency, natural silk is carried out by diverse socio-economic backgrounds of the community that can influence perceptions and motivations in the development of natural silk business. This study aimed to determine the perceptions and motivations in developing natural silk business which is expected to be a formulation material in the preparation of natural silk business policies. The study was conducted in Donri-Donri District as the center of natural silk development in Soppeng Regency. Data collection used survey method and interview. The sampling of respondents used a random sampling method for natural silk farmers. The results of the study indicate that in Soppeng District, the high farmer’s perception of natural silk business are related to socio-economic factors such as the length of residence in the village and gender. The motivation of farmers in natural silk business is generally because natural silk business is easy to implement, technological mastery, and easy to obtain information. Natural silk have big chance to be developed with quality improvement of silkworm seed and silkworm feed. High perception and motivation of community need to be accompanied by the availability of supporting factors so that this business can develop optimally.Keywords: natural silk, farmer perception, farmer motivation, Soppeng Regency
Analysis of Characteristics and Typology of Mapili Watershed West Sulawesi Province Wahyudi Isnan; Hasnawir Hasnawir
Jurnal Wasian Vol 5, No 1 (2018): Jurnal Wasian
Publisher : Balai Penerapan Standar Instrumen Lingkungan Hidup dan Kehutanan (BPPLHK)Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1069.707 KB) | DOI: 10.20886/jwas.v5i1.4108

Abstract

The multisectoral, multidisciplinary, multi-stakeholder and multidimensional watersheds problems are the consequences of multifunctional watersheds.  The complexity of these problems demanding a system and management approach that appropriate with the characteristics and typology of the watershed. This study aims to analyze the characteristics and typology of Mapili watershed West Sulawesi Province. This research was conducted using surveys, primary, and secondary data collection. Application of geographic information system (GIS) with overlay maps and scoring was used. The results showed that Mapili biogeophysical characterization includes meteorology, morphology, morphometry, hydrology, watershed capability and socioeconomic, cultural and institutional characterization will influence the system of Mapili watershed management. Mapili watershed can be classified into two typology watershed, namely: typology II, which has a low total population density (97 people/km2) with high rainfall (>2500 mm/yr); and typology IV, which has a high total population density (377 people/km2) with low rainfall (<1500 mm/yr). Both typologies have different characteristics of watershed problems. Typology II is generally located in the central area and upstream Mapili and Typology IV are located in the downstream areas of Mapili watershed.Keywords: Watershed characteristic, watershed typology, GIS, Mapili watershed
Perception and Motivation of Farmers in the Development of Natural Silk Business in Soppeng Regency Sulawesi Selatan Wahyudi Isnan; Nurhaedah Muin; Nur Hayati
Jurnal Wasian Vol 6, No 1 (2019): Jurnal Wasian
Publisher : Balai Penerapan Standar Instrumen Lingkungan Hidup dan Kehutanan (BPPLHK)Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (984.806 KB) | DOI: 10.20886/jwas.v6i1.4638

Abstract

The development of natural silk has not been optimal because the handling of the problem tends to be general and not adjusted to the socio-economic characteristic of the community. In Soppeng Regency, natural silk is carried out by diverse socio-economic backgrounds of the community that can influence perceptions and motivations in the development of natural silk business. This study aimed to determine the perceptions and motivations in developing natural silk business which is expected to be a formulation material in the preparation of natural silk business policies. The study was conducted in Donri-Donri District as the center of natural silk development in Soppeng Regency. Data collection used survey method and interview. The sampling of respondents used a random sampling method for natural silk farmers. The results of the study indicate that in Soppeng District, the high farmer’s perception of natural silk business are related to socio-economic factors such as the length of residence in the village and gender. The motivation of farmers in natural silk business is generally because natural silk business is easy to implement, technological mastery, and easy to obtain information. Natural silk have big chance to be developed with quality improvement of silkworm seed and silkworm feed. High perception and motivation of community need to be accompanied by the availability of supporting factors so that this business can develop optimally.Keywords: natural silk, farmer perception, farmer motivation, Soppeng Regency
Analysis of Biogeophysics Characteristics and Discharge of Lompo Riaja Atas River and Lompo Riaja Bawah River, Ralla Sub Watershed Usman Arsyad; Beta Putranto; Nur Aeni; Wahyudi Isnan; Hasnawir
Jurnal Penelitian Kehutanan Wallacea Vol. 8 No. 1 (2019)
Publisher : Foresty Faculty of Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1245.58 KB) | DOI: 10.18330/jwallacea.2019.vol8iss1pp27-38

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 subwatershed, 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 subwatershed, 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.