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PEMETAAN PERUBAHAN PENGGUNAAN LAHAN DI WILAYAH KABUPATEN TAKALAR TAHUN 1999 - 2019 MENGGUNAKAN SISTEM INFORMASI GEOGRAFIS Buraerah, Muhammad Fikruddin; Rasyidi, Emil Salim; Sandi, Reski
Jurnal Ilmiah Ecosystem Vol. 20 No. 1 (2020): ECOSYSTEM VOL.20 NO 1 TAHUN 2020
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat Universitas Bosowa

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The high population growth implied with increasing of various needs such as residentials, industries, health, education etc. Otherwise, increasing of various life needs causing alteration of city land purpose. This research aimed to determine the extent, describe and analyze land use changes in the areas of Takalar Regency with landsat satellite image interpretation. The study design as quantitative methods. Primary data used were obtained by downloading the maps of Landsat 5 TM, 7 ETM+, and 8 OLI images in the areas of Takalar Regency, the geometric correction, the image cropping and the interpretation. Research data are 3 map of landsat image that is year 1999, 2009 and 2019. The spatial data were analyzed using overlay process (union). The results showed that the settlement has a very significant change increased by 23,137 ha or 35.17%, while the use of forest land / mixed garden was reduced by 12,463 ha or 54.99%. This events is still continues until now. Therefore, it is contributing big impact on environment such as increasing city temperature, which is causing the decrease of Takalar Regency citizen comfortability. Therefore, sustainable development needed, for sustainable environment.

MONITORING PERUBAHAN SUHU IBU KOTA NEGARA TAHUN 1993-2019 MENGGUNAKAN CITRA SATELIT LANDSAT (Studi Kasus: Jakarta, Singapura, Kuala Lumpur Dan Bangkok) Rasyidi, Emil Salim; Sandi, Reski; Buraerah, Muhammad Fikruddin
Jurnal Ilmiah Ecosystem Vol. 20 No. 1 (2020): ECOSYSTEM VOL.20 NO 1 TAHUN 2020
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat Universitas Bosowa

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Developments in the Capital territory of a State that is dynamic often creates an impact on the temperature of an area in the urban, it is based on the high demand of the population living in urban areas in terms of both facilities and infrastructure resulted in an urban space less support for the occurrence of such development. Increasing temperatures in urban areas provide a lot of negative effects, such is the potential for fires, air pollution up to comfort of live in the state capital. And the others problems, with the global warming which occurred in the world, such as the melting of ice on most of the north pole, unpredictable Global warming and the number of flora and fauna habitat damaged. Therefore, researchers feel the need for monitoring changes in surface temperature in the Capital City of the South-East Asia, namely Jakarta, Singapura, Kuala Lumpur and Bangkok from years 1993 -2019, Monitoring changes in surface temperature in the capital city of the State carried out using Landsat 4, Landsat 7 TM, and Landsat 8 OLI with thermal band resolution of 90m, the aim of this study is Monitoring and analysis of Surface Temperature changes in Southeast Asia Capital City form 1993-2019. the result in this research is Surface Temperature changes map of the capital city of Southeast Asia Capital City form 1993-2019 case study: Jakarta, Singapura, Kuala Lumpur and Bangkok from years 1993-2019

GERAKAN TANAH PADA LOKASI BENDUNGAN KARALLOE KABUPATEN GOWA PROVINSI SULAWESI SELATAN Sandi, Reski; Rasyidi, Emil Salim; Fikruddin, Muhammad
Jurnal Ilmiah Ecosystem Vol. 20 No. 1 (2020): ECOSYSTEM VOL.20 NO 1 TAHUN 2020
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat Universitas Bosowa

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Bentuk Desain dan Pemilihan Jenis Tanaman Lahan Pasca Tambang Nikel di Desa Tangofa Provinsi Sulawesi Tengah Sandi, Reski; Shaddad, Aqsal Ramadhan
Jurnal of Mining Insight Vol 2 No 1 (2024): Journal of Mining Insight
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jmi.v2i1.262

Environmental changes due to mining business are generally irregular, and most tend to be a steep relief. The objective of this research is to produce the reclamation design and to determine the right type of vegetation for planting in the former nickel mining area. This study employs qualitative research method which consist of field survey data collection, precipitation data, and size of the reclamation design as well as the history of the company being analyzed. Referring to the results of this study, the design of reclamation is vital in mine planning based on the principles as stipulated in the goverment regulation of the republic of indonesia no. 78 the year 2010. In relationt to the planned closure of the post-mining land. It is necessary to design the land after the mining activities expire considering that the land would be utilized by its allocation. Making a reclamation design used the bench method, by forming terraces since the relief was quite steep. Based on the calculation of geotechnical science by the company, the results of the slope was quite optimal with a value of SF ± 1,5 in the 3D design as reference drawings for reclamation design. Plants suitable for early revegetation is sengon, it is based on the analysis performed on 2 (two) soil chemical properties located in blok X for micro nutrient parameters. The soil pH at this location was categorized as a weak acid, and the nutrient content at the research site was classified high since it possessed higher than the averagae value based on laboratory results.

Analisis Pengaruh Boulder Terhadap Kadar Nikel dan Basicity Nikel Pada Penambangan Nikel Laterit Menggunakan Mesin X-Ray di Provinsi Sulawesi Tengah Sandi, Reski; Ma’rief, A. Al’Faizah
Jurnal Ilmiah Ecosystem Vol. 25 No. 2 (2025): Ecosystem Vol. 25 No 2, Mei - Agustus Tahun 2025
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35965/eco.v25i2.6748

Produksi nikel laterit Indonesia mencapai 190 ribu ton per tahun dengan cadangan 8% dari total dunia. Sulawesi menjadi wilayah dengan potensi nikel paling berkembang di Indonesia. Penelitian bertujuan menganalisis kadar nikel dan basicity pada berbagai rentang fraksi boulder menggunakan mesin X-Ray tipe Nitton XL2. Lokasi penelitian berada di Provinsi Sulawesi Tengah (121°02’24” BT – 123°15’36” BT dan 01°31’12” LS – 03°46’48” LS). Data yang digunakan berupa hasil pengukuran kadar nikel dan basicity, kemudian diolah secara statistik dan disajikan dalam bentuk tabel. Hasil penelitian menunjukkan kadar nikel tertinggi sebesar 2,49% pada fraksi boulder 5,1–10 cm, sedangkan terendah sebesar 1,79% pada fraksi 2,6–5 cm. Nilai basicity tertinggi adalah 0,68% pada fraksi 5,1–10 cm, sedangkan terendah sebesar 0,60% pada fraksi 20,1–25 cm. Temuan ini memberikan informasi penting bagi pengelolaan dan pemanfaatan sumber daya nikel laterit di Sulawesi Tengah. Indonesia's laterite nickel production reaches 190 thousand tons per year with reserves of 8% of the world's total. Sulawesi is the region with the most developed nickel potential in Indonesia. This study aims to analyze nickel content and basicity in various boulder fraction ranges using a Nitton XL2 type X-Ray machine. The research location is in Central Sulawesi Province (121°02'24" East Longitude - 123°15'36" East Longitude and 01°31'12" South Latitude - 03°46'48" South Latitude). The data used are the results of nickel content and basicity measurements, then processed statistically and presented in tabular form. The results show the highest nickel content of 2.49% in the 5.1–10 cm boulder fraction, while the lowest is 1.79% in the 2.6–5 cm fraction. The highest basicity value was 0.68% in the 5.1–10 cm fraction, while the lowest was 0.60% in the 20.1–25 cm fraction. These findings provide important information for the management and utilization of laterite nickel resources in Central Sulawesi.

Estimasi Sumberdaya Batubara dengan Menggunakan Metode Poligon Pada PIT Selatan PT Mandiri Hijau Buana Kalimantan Timur Firdaus, Firdaus; Nur Salam, Amin; Sandi, Reski
Jurnal of Mining Insight Vol 3 No 1 (2025): Journal of Mining Insight
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jmi.v3i1.286

Penelitian ini bertujuan untuk melakukan estimasi sumberdaya batubara pada pit selatan PT Mandiri Hijau Buana, Kecamatan Palaran, Kalimantan Timur dengan menggunakan metode poligon. Metode ini dipilih karena relatif sederhana dan mampu memberikan hasil perhitungan dalam waktu yang singkat dengan menentukan area pengaruh di sekitar titik bor. Data penelitian diperoleh dari 10 titik bor yang kemudian dimodelkan menggunakan perangkat lunak Minescape untuk mengetahui geometri seam batubara dalam bentuk 2D. Hasil analisis menunjukkan bahwa terdapat satu lapisan batubara pada seam A dengan ketebalan berkisar 3,50–6,17 meter, memiliki kemiringan sebesar 50° pada elevasi 69 mdpl. Estimasi sumberdaya batubara berdasarkan klasifikasi SNI 5015:2019 diperoleh sumberdaya terukur (measured) sebesar 122.211,11 ton dengan luas area 15,31 Ha, sumberdaya tertunjuk (indicated) sebesar 180.600,65 ton dengan luas area 46,11 Ha, dan sumberdaya tereka (inferred) sebesar 220.933,63 ton dengan luas area 63,47 Ha. Hasil ini menunjukkan bahwa metode poligon efektif digunakan untuk menghitung tonase sumberdaya batubara pada daerah penelitian dengan kondisi geologi moderat.

Efisiensi Kerja Quality Control dalam Mengendalikan Grade Nikel di Kota Maba, Kabupaten Halmahera Timur Provinsi Maluku Utara ma'rief, Al’Faizah; Sandi, Reski
Jurnal of Mining Insight Vol 3 No 2 (2025): Journal of Mining Insight
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jmi.v3i2.293

Penelitian ini bertujuan untuk menganalisis efisiensi kerja Quality Control (QC) dalam mengendalikan kadar nikel (Ni) pada front penambangan dan stockpile di Pit 2, Kota Maba, Kabupaten Halmahera Timur. Metode penelitian bersifat deskriptif dengan pendekatan kualitatif, melalui pengambilan sampel bijih dari front penambangan dan stockpile selama tiga pekan berturut-turut. Hasil analisis laboratorium menunjukkan kadar Ni di front penambangan berkisar antara 1,61–2,41% dengan rata-rata 1,87% pada pekan pertama, 1,84% pada pekan kedua, dan 1,79% pada pekan ketiga. Sementara itu, kadar Ni pada stockpile rata-rata sebesar 1,82%, 1,84%, dan 1,74% pada periode yang sama. Selisih rata-rata kadar Ni antara front penambangan dan stockpile hanya 0,05%, yang umumnya disebabkan oleh kontaminasi alat sampling dan faktor cuaca. Hasil penelitian ini menunjukkan bahwa sistem QC yang diterapkan cukup efisien dalam menjaga konsistensi kadar Ni di atas nilai cut off grade perusahaan sebesar 1,45%. Namun demikian, peningkatan kebersihan alat sampling dan prosedur preparasi masih diperlukan untuk meminimalisasi penyimpangan kadar.

Analisis Korelasi Zona Limonit dan Saprolit Berdasarkan Data Pengeboran Pada PT Gag Nikel Provinsi Papua Barat ma'rief, Al’Faizah; Sandi, Reski; Rumkel, Budiman Gusnandar; Shaddad, Aqsal Ramadhan
Jurnal of Mining Insight Vol 3 No 4 (2025): Journal of Mining Insight
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jmi.v3i4.307

Penelitian ini membahas analisis korelasi antara zona limonit dan saprolit berdasarkan data pengeboran pada area PT Gag Nikel di Provinsi Papua Barat. Endapan nikel laterit di wilayah tersebut terbentuk akibat pelapukan batuan ultrabasa di lingkungan tropis, yang menghasilkan profil laterit tebal dengan dua lapisan utama, yaitu limonit di bagian atas dan saprolit di bawahnya. Data diperoleh dari sembilan titik bor yang tersebar di area penelitian berupa data collar dan assay yang menggambarkan variasi litologi, ketebalan lapisan, serta kadar nikel pada berbagai kedalaman. Pengolahan data dilakukan dengan perangkat lunak ArcGIS dan Surpac untuk pemodelan spasial dan korelasi vertikal antar titik bor. Hasil analisis menunjukkan bahwa lapisan limonit paling tebal terdapat pada beberapa titik bor tertentu, sedangkan lapisan saprolit tersebar merata di seluruh area dengan ketebalan yang bervariasi, termasuk area dengan ketebalan saprolit yang relatif tipis. Pemahaman pola sebaran dan hubungan spasial kedua zona ini sangat penting untuk penentuan model geologi serta estimasi sumber daya nikel laterit yang akurat dan optimal bagi aktivitas eksplorasi dan pengembangan tambang di Papua Barat. Penelitian ini memberikan kontribusi signifikan terhadap pengembangan metode analisis dan pemodelan sumber daya mineral penting yang mendukung industri logam dan energi baru terbarukan di Indonesia.

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