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Discrimination of Mangrove Ecosystem Objects on the Visible Spectrum Using Spectroradiometer HR-1024 Arfan, Amal
Forum Geografi Vol 29, No 1 (2015): Forum Geografi
Publisher : Forum Geografi

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Abstract

The study was conducted to determine whether the vegetation in the mangrove ecosystem, can be contrasted with another objectt, using Spectroradiometer HR-1024. The data used is data visible spectrum(400-700 nm)  which resulted in 204 bands. The analysis used is the integrated analysis with three levels. First, using ANOVA to determine significant differences in spectral reflectance between vegetation with water, wet soil and dry soil. Second, using Step wise Canonical Discriminant Analysis to identify the most sensitive band for discrimination reflection spectrum. This analysis which resulted in six bands are considered practical to distinguish vegetation with another object namely  401.5 nm, 416.9 nm, 508.2 nm, 599.3 nm, 660.3nm and 689.2 nm. Third using the Jeffries-Matusita separability index which resulted in the separation index of mangrove vegetation, water, wet soil and dry soil is 1.414.
Discrimination of Mangrove Ecosystem Objects on the Visible Spectrum Using Spectroradiometer HR-1024 Arfan, Amal
Forum Geografi Vol 29, No 1 (2015): July 2015
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v29i1.794

Abstract

The study was conducted to determine whether the vegetation in the mangrove ecosystem, can be contrasted with another objectt, using Spectroradiometer HR-1024. The data used is data visible spectrum(400-700 nm)  which resulted in 204 bands. The analysis used is the integrated analysis with three levels. First, using ANOVA to determine significant differences in spectral reflectance between vegetation with water, wet soil and dry soil. Second, using Step wise Canonical Discriminant Analysis to identify the most sensitive band for discrimination reflection spectrum. This analysis which resulted in six bands are considered practical to distinguish vegetation with another object namely  401.5 nm, 416.9 nm, 508.2 nm, 599.3 nm, 660.3nm and 689.2 nm. Third using the Jeffries-Matusita separability index which resulted in the separation index of mangrove vegetation, water, wet soil and dry soil is 1.414.
The Spatial Distribution of Robberies In Makassar City Abidin, Muhammad Rais; Sideng, Uca; Arfan, Amal; Syarif, Erman; Dirawan, Gufran Darma; Azhim, Muhamad Ihsan
UNM Geographic Journal Volume 1 Nomor 2 Maret 2018
Publisher : Pascasarjana Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (349.709 KB) | DOI: 10.26858/ugj.v1i2.5312

Abstract

This study aims to identify the spatial distribution of robberies in Makassar city by using crime mapping (crime analysis) through Geographic Information System in order to find a novel solution to deal with them. This study employs spatial analysis and snowball sampling to analyze and collect the data. The results show that the spatial pattern of robberies between 2015 and 2016 was cluster consisted of three categories high, medium and low crime density, and it also reveals that there was significant increase the number of robberies from 76 to 140 cases in 2015 and 2016 respectively. In addition, based on the time series analysis, it shows that in 2015 the high crime occurred in August, September, and April meanwhile the low crime was in January, October, November, and December. In 2016, the high crime was in March, September and October while medium crime happened mostly in January, April, Mei, June, July and August, and there was not low crime recorded in 2016.
Factors That Influence The Change Of Mangrove Forest In South Sulawesi, Indonesia Arfan, Amal
UNM Geographic Journal Volume 1 Nomor 2 Maret 2018
Publisher : Pascasarjana Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (268.527 KB) | DOI: 10.26858/ugj.v1i2.5409

Abstract

North Belopa located in Luwu regency, South Sulawesi, Indonesia has a mangrove forest area. This study aims to analyze the factors that causes the reduction of mangrove ecosystem in North Belopa. This mangrove forest has undergone extensive changes. In some areas, there are additional mangrove forests however in other areas, there is a reduction. This change is caused by either the physical or anthropogenic factors. The physical factors consist of climate, rainfall, air temperature, humidity, wind, wave and current. Meanwhile, the anthropogenic factors are the conversion of mangrove forests into ponds and garbage disposal. This anthropogenic factor leads to more reduction and dominant than physical factors. As a result, the area of mangrove forest in North Belopa experienced large transformation.
Fishermen Home Based Business in The Settlement Of Bajo Tribe In Bajoe Village Of Tanete Riattang Timur Sub-District In Bone District Novianti, Nur Asia; Umar, Ramli; Arfan, Amal
UNM Geographic Journal Volume 1 Nomor 1 September 2017
Publisher : Pascasarjana Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (767.527 KB) | DOI: 10.26858/ugj.v1i1.5273

Abstract

The research aimed to discover (1) the characteristics of the types of business of fishermen community in the settlement of Bajo Tribe in Bajoe Village, (2) the availability and the condition of facilities and infrastructures which supported the business activity of fishermen households in the settlement of Bajo Tribe in Bajoe Village, (3) the strategies which could be done to develop fishermen home based business in the settlement of Bajo Tribe in Bajoe Village. The research employed descriptive qualitative method. The targets of the research were Bajo Tribe community who opened home based business. The data were collected through observation, interview, and documentation techniques. The data were processed and analyzed by using descriptive analysis and SWOT analysis. The result of the research showed that (1) the characteristics of the types of fishermen home based business in the settlement of Bajo Tribe were dominated by business with sea products raw materials such as sea cucumber drying, fish, and shrimp drying as well as restaurants which the raw materials came from inside the settlement area and which the raw materials were not from sea products such as groceries seling, cakes and drink making, and services such as beauty shop; (2) the facilities and infrastructures which supported home based business activities in the settlement of Bajo Tribe were not yet fulfilled. To process the sea products, the product rooms were not yet available, the marketing was only to sell to regular customers, and the infrastructures for settlement garbage and waste were not yet available in all of the segments so it could not support home based business activities; (3) the strategies which could be done to developed home based business of fishermen households in the settlement of Bajo Tribe were by making the settlement area of Bajo Tribe as the center area of sea products processing so it would be better known by the people, developing the settlement of Bajo Tribe by managing the environment and making stalls as well as places to process the sea products so it could become the sales center of souvenirs of Bajo Tribe.
Detection of Development and Density Urban Build-Up Area with Satellite Image Overlay Abidin, Muhammad Rais; Arfan, Amal
International Journal of Environment, Engineering and Education Vol 1 No 2 (2019)
Publisher : Three E Science Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (531.77 KB) | DOI: 10.5281/zenodo.3369481

Abstract

The growth dynamics of urban areas and the increase in land requirements are a series of each other influence each other The method used in this study is a quantitative method through spatial analysis using Geographic Information Systems. The purpose of this study was to see the extent to which the development of urban areas using the Urban Index (UI) method. Data analysis carried out by overlapping techniques using a map of the built area of Land Use in 2013 and the results of image interpretation for the built area in 2017. The results of the study showed that there was a percentage increase in the built area from 2013 to 2017 of 12.67%. Then from the total area of Makassar City, around 60.72% of the area built in 2013, and there was a significant increase in 2017 to 76.30%. The process of expansion of built-up land without control often impacts on the loss of land that has ecological functions and then impacts on the emergence of environmental problems. One of the things that can be done to prevent the adverse effects of the development of built land is to monitor and predict its development so that solutions can found before the adverse effects occur.