Article Per Year (5 Year)
p-Index From 2021 - 2026
6.172
P-Index
This Author published in this journals
All Journal JURNAL ILMIAH PLATAX Journal of Degraded and Mining Lands Management Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Pro-Life Sumatra Journal of Disaster, Geography and Geography Education Jurnal Penelitian Pendidikan IPA (JPPIPA) JURNAL PENDIDIKAN TAMBUSAI Ensiklopedia of Journal Teknomekanik Journal of Education and Teaching Learning Maritime Park: Journal Of Maritime Technology and Socienty Langgam International Journal of Social Science Education, Art and Culture Al-DYAS : Jurnal Inovasi dan Pengabdian kepada Masyarakat Jurnal Kependudukan dan Pembangunan Lingkungan (JKPL) AMPLITUDO: Journal of Science & Technology Innovation Al-Ihtiram: Multidisciplinary Journal of Counseling and Social Research JURNAL BUANA Jurnal Info Kesehatan
Umar, Iswandi
Unknown Affiliation
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Other

Published : 40 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 40 Documents
Search

 1   2   3   4 
Analysis of Palm Oil Industry Liquid Waste Management at PT. Citra Putra Kebun Asri in South Kalimantan Province Putra, Surya Eka; Barlian, Eri; Syah, Nurhasan; Umar, Iswandi; Dewata, Indang
Jurnal Penelitian Pendidikan IPA Vol 9 No 9 (2023): September
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i9.5101

Abstract

Oil palm plantations are currently experiencing quite rapid growth; this has resulted in a large number of oil palm fruit processing industriespalm oil (crude palm oil) and palm kernel (palm kernel). The more oil palm fruit that is processed, the more liquid waste it produces. Liquid waste generated during the production process can harm the environment because of the high organic matter contained therein. The purpose of this study was to analyze the management of palm oil industrial wastewater at PT Citra Putra Kebun Asri.The method used in this study is an exploratory method and the collection and testing of data is done by graph sampling. The results of the analysis contained in the palm oil industrial wastewater, namely the pH content ranges from 4-8.5. The content of BOD and COD in the first pool had quite high levels, this was due to (human error) during testing, factory measuring instruments that had not been calibrated and inaccurate sampling by factory staff. While the BOD and COD in the application pond have values ​​that are in accordance with the liquid waste quality standards with BOD values ​​below 100 mh/L and COD values ​​below 250 mg/L
Water Quality Analysis in the Batang Ombilin River, Sawahlunto City Monica, Fitrya; Umar, Iswandi; Dewata, Indang; Barlian, Eri
Jurnal Penelitian Pendidikan IPA Vol 9 No SpecialIssue (2023): UNRAM journals and research based on science education, science applic
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9iSpecialIssue.6371

Abstract

The decline in water quality is caused by pollution pressure due to low environmental sanitation efforts. Water quality can be determined by carrying out certain tests on the water. This research was conducted on the Batang Ombilin River, Sawahlunto City. This research was conducted in October 2022. This research used survey methods and laboratory test methods. Activities carried out using the survey method are in the form of interviews related to research. Next, laboratory test methods are used to analyze water quality. Interview activities were carried out with people living around the Batang Ombilin River. Respondents were determined using random sampling. Samples were taken of 2 liters of water and carried using plastic bottles. The parameters used to see water quality are TDS, TSS, pH, DO, BOD and COD. Based on research that has been carried out, the results show that 65.25% of respondents stated that the existing water is suitable for consumption but must be filtered and purified first before cooking. Meanwhile, 30.75% of respondents stated that it was not suitable for consumption because the water was cloudy, dirty and smelly. Furthermore, in the water quality analysis, the average value of the TDS parameter was obtained with an average value of 108. TSS obtained an average value of 29.1. The pH got an average value of 8.1. DO got an average score of 7.3. BOD got an average score of 1.4 and COD got an average score of 15.2. From the results of tests carried out at 3 different points, an average value was obtained below the established class 2 water quality standards
The Impact of Social Forestry on Communities and Forest Areas Salimbutan Lubuk Alung Rinaldi, Rinaldi; Barlian, Eri; Syah, Nurhasan; Umar, Iswandi
Jurnal Penelitian Pendidikan IPA Vol 10 No 5 (2024): May
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i5.7196

Abstract

Indonesia is one of the countries that has the largest area of ​​natural forest in the world and is often referred to as one of the world's lungs which contributes oxygen for the survival of living things. Even though forests have many benefits, if the benefits from forests are not managed properly and correctly, they can have negative impacts and can lead to disasters and conflicts, apart from that, there is a fairly high level of deforestation and poverty is still often found in communities in and around forests. made various parties including the Ministry of Environment and Forestry try to encourage community empowerment programs. One of these community empowerment programs is Social Forestry. This type of research uses a quantitative approach with a descriptive design in the form of a case study. The population used in this research is the area and managers of LPHN Salimbutan Lubuk Alung, Padang Pariaman Regency. The samples from this research are all areas managed by LPHN Lintasutan Lubuk Alung. The instruments used in this research were observations and questionnaires. The results of this research show that in 2017 the level of deforestation at the Salimbutan LPHN increased by 9.7 Ha, then in 2018 it decreased by 2.6 Ha, in 2019 by 0.8 Ha, in 2020 by 1.4 Ha, in 2021 with a total of 0.8 Ha, and then in 2022 it will increase again with a total of 4.7 Ha. Meanwhile, community income before the training and assistance was still relatively low with a percentage of 11.16%. The data after training and assistance was carried out in the Salimbutan LPHN area, community income increased by 28.08% in 2022 and 57.38% in 2023
ANALISIS KEBERLANJUTAN DAN KEBIJAKAN PENGELOLAAN SAMPAH DI KOTA SUNGAI PENUH Hadi, Shopian; Frinaldi, Aldri; Umar, Iswandi
Ensiklopedia of Journal Vol 8, No 2 (2026): Vol. 8 No. 2 Edisi 1 Januari 2026
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33559/eoj.v8i2.3657

Abstract

Pengelolaan sampah di Kota Sungai Penuh menghadapi tantangan serius akibat peningkatan volume timbulan sampah yang mencapai 50,86 ton/hari serta keterbatasan lahan untuk Tempat Pemrosesan Akhir (TPA). Penelitian ini bertujuan untuk menganalisis status keberlanjutan pengelolaan sampah di Kota Sungai Penuh dan merumuskan strategi kebijakan yang efektif. Metode penelitian yang digunakan adalah pendekatan kombinasi kuantitatif dan kualitatif dengan teknik analisis Multi-Dimensional Scaling (MDS) menggunakan perangkat lunak Rapfish untuk menentukan indeks keberlanjutan pada lima dimensi: lingkungan, ekonomi, sosial, hukum dan kebijakan, serta teknologi dan infrastruktur. Selanjutnya, dilakukan analisis Interpretive Structural Modeling (ISM) untuk memetakan hubungan hierarkis antar elemen strategis dan mengidentifikasi variabel kunci menggunakan analisis MICMAC. Hasil analisis MDS menunjukkan indeks keberlanjutan rata-rata multidimensi sebesar 65,33 yang dikategorikan sebagai  “Cukup Berkelanjutan”, dengan dimensi sosial memiliki nilai tertinggi (89,29) dan dimensi teknologi serta infrastruktur terendah (55,25). Analisis leverage mengidentifikasi atribut kunci seperti penerapan teknologi TPA dan efektivitas penegakan hukum sebagai faktor pengungkit utama. Hasil pemodelan ISM menunjukkan bahwa ketersediaan Peraturan Daerah (HK1) serta kesadaran masyarakat (S2) merupakan elemen fundamental (independent variables) yang memiliki daya dorong (driving power) kuat bagi keberhasilan sistem secara keseluruhan. Rekomendasi strategis difokuskan pada penguatan penegakan hukum, modernisasi infrastruktur TPA, dan peningkatan kemitraan investasi swasta untuk menjamin keberlanjutan pengelolaan sampah jangka panjang di Kota Sungai Penuh. Kata Kunci: Pengelolaan Sampah, Keberlanjutan, MDS, Rapfish, ISM, Kota Sungai Penuh
Comparison of Mangrove and Coastal Ecosystem Management Strategies between Padang City (Indonesia) and Port Dickson (Malaysia) to Support Coastal Resilience Fardilla, Midratul; Salsabila, Ilham; Aswin, Zeus Marullah; Fadila; Akbarullah; Kamal, Eni; Dewata, Indang; Syah, Nurhasan; Fatimah, Siti; Barlin, Eri; Heldi; Umar, Iswandi
Maritime Park: Journal of Maritime Technology and Society Volume 5, Issue 1, 2026
Publisher : Department of Ocean Engineering, Faculty of Engineering, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/mp.vi.48838

Abstract

Mangrove and coastal ecosystems play a critical role in enhancing coastal resilience; however, their effectiveness strongly depends on governance arrangements and management strategies. This study applies a qualitative comparative case study approach integrating a Systematic Literature Review (SLR) and field observations to compare mangrove and coastal ecosystem management strategies in Padang City (Indonesia) and Port Dickson (Malaysia). A structured comparative framework was used to assess biophysical conditions, governance structures, monitoring capacity, community participation, and contributions to ecological, institutional, and social resilience. The results indicate that Padang City possesses larger mangrove extent and higher species diversity, supporting stronger ecological and social resilience, but is constrained by fragmented governance and weak enforcement. Port Dickson exhibits smaller and fragmented mangrove areas with clearer institutional authority and periodic monitoring, yet limited social–ecological integration. The findings highlight that effective coastal resilience requires integrating strong regulatory frameworks, community engagement, and consistent long-term monitoring.
Spatial modelling of shallow groundwater quality in coastal areas with Kriging interpolation Arbi, Yaumal; Syah, Nurhasan; Umar, Iswandi; Dewata, Indang; Gusman, Mulya; Sandra, Nevy
Teknomekanik Vol. 9 No. 1 (2026): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v9i1.47272

Abstract

This study maps shallow coastal groundwater quality in Padang, Indonesia, using four operational parameters: potential of hydrogen (pH), electrical conductivity (EC), total dissolved solids (TDS), and salinity. We characterize spatial dependence using empirical variograms, evaluate directional anisotropy, and generate prediction surfaces with Ordinary Kriging. The variogram analysis indicates stronger spatial continuity along the coastline for EC and TDS, while salinity shows shorter continuity with a distinct directional structure, reflecting localized freshwater-seawater mixing processes. Groundwater pH remains neutral to slightly alkaline and exhibits lower spatial variability than EC, TDS, and salinity. Leave-one-out cross-validation supports the reliability of the kriging estimates at the study scale, indicating low prediction error and strong agreement between observed and predicted values. The resulting thematic maps enable a three-level quality zoning that differentiates a lower-risk northern segment, a transitional central belt, and a higher-risk southern segment consistent with seawater intrusion influence. These outputs provide a practical basis for prioritizing monitoring locations, protecting vulnerable wells, and strengthening evidence-based coastal groundwater management aligned with SDG 6 Clean Water and Sanitation and SDG 11 Sustainable Cities and Communities.
EVALUATION OF REGIONAL LAND SUITABILITY SETTLEMENTS IN SOLOK CITY Annur, Latifa; Umar, Iswandi
JURNAL BUANA Vol 10 No 1 (2026)
Publisher : DEPARTEMEN GEOGRAFI FIS UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/buana/vol10-iss1/2666

Abstract

This study aims to 1) determine the suitability of land in Solok City, 2) determine the suitability of settlement land suitability with the RTRW in Solok City, 3) determine the suitability of settlement land suitability with the existing conditions of Solok City. The data analysis technique used is the Scoring and overlay method using ArcGIS 10.4 software. The results of the study 1) the suitability of residential land in Solok City has 3 classes, namely according to 183Ha (3.18%) , marginally suitable 4496 Ha (78.36%) and not suitable 1058 (18.44Ha%). 2) evaluation of the suitability of residential land with the RTRW of Solok City in 2012-2031 which has a total area of ​​1786 Ha, there are slight differences in the inappropriate class of 29 Ha (1.62%) and dominated by marginally suitable class of 1723 Ha (96.47%) scattered in the Tanjung Harapan District 3) evaluation of land suitability with existing land use in 2021 found a slight difference in the inappropriate class of 25Ha (4.09%) and dominated by marginally suitable class with an area of ​​577Ha (94.43%).
ANALISIS DAYA DUKUNG LAHAN PERTANIAN SAWAH DI KECAMATAN PULAU PUNJUNG KABUPATEN DHARMASRAYA Fitra.R, Muhammad Afif; Umar, Iswandi
JURNAL BUANA Vol 10 No 1 (2026)
Publisher : DEPARTEMEN GEOGRAFI FIS UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/buana/vol10-iss1/2840

Abstract

Pulau Punjung Subdistrict continues to experience an increase in development and the quality of the population is quite rapid. This can lead to a reduction in the area of agricultural land and a decrease in food production. This research aims to (1) Knowing the level of carrying capacity of paddy fields, (2) Knowing the population projection in 2035 (3) Knowing the need for food and agricultural land in 2035. The method used is descriptive quantitative method. The analysis technique uses a mathematical formula theory of Odum et all.,in Soeharjo and Tukiran (1990). The results of the study show that the level of carrying capacity of lowland agricultural land in 2010-2020 has an optimal land carrying capacity. The results of the KLPR calculation, the need for agricultural land for rice fields in Pulau Punjung District for 2035 has been fulfilled from the available rice fields in 2035. The calculation of rice production for 2035 has increased, so that rice consumption needs can be met.
Spatial models of rice fields change and sustainable agriculture in Solok District, West Sumatra Province Umar, Iswandi; Arif, Dian Adhetya
Journal of Degraded and Mining Lands Management Vol. 11 No. 1 (2023)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2023.111.4875

Abstract

Indonesia is an agricultural country and one of the world's rice-producing countries. However, the increase in population has pushed for the conversion of agricultural land to non-agricultural purposes. Solok is a district with the largest paddy field area in West Sumatra. Yet, the increase in population has resulted in a decrease in paddy fields every year. This study aimed to determine the model for changing the area of paddy fields for the 2000-2020 period and determine the direction of sustainable agricultural policies. In defining the paddy field change model, this research uses the input data from the interpretation of 2000 Landsat 5 imagery, 2010 Landsat 7 imagery, and 2020 Landsat Oli 8 imagery. The data were analyzed using a geographic information system (GIS). This research employed the Powersim Software with a system dynamics approach in projecting rice production and demand. This research used Interpretative Structural Modeling (ISM) analysis to determine the direction of sustainable food policy. The results showed that there had been a conversion of 13,801.6 hectares of paddy agricultural land into a built-up area in the 2000-2020 period in Solok District. In 2020, Solok District supplied 2,838 thousand tons of rice, while the demand for rice was 446.3 thousand tons. In the direction of the sustainable agriculture policy, there are three key sub-elements; tightening land use permits, establishing and implementing spatial planning regulations, and consistency in enforcing spatial planning violation laws.
Arahan Kebijakan Untuk Mengurangi Dinamika Penggunaan Lahan pada DAS Antokan, Provinsi Sumatera Barat Umar, Iswandi
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 11 No 1 (2021): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.11.1.10-18

Abstract

The need for land has increased every year, and this increase is caused by the rate of population growth, resulting in changes in land use. Uncontrolled land use conversion has led to catastrophic flooding in the Antokan watershed. The purpose of this study was to determine the direction of land use change policies in the Antokan Watershed, West Sumatra Province. To determine land use change using the GIS method with the overlay technique of land use maps for the period 2000-2020. Furthermore, to determine the policy direction using the ISM method involving 20 experts. Research results in the Antokan watershed have shown changes in land use of 4,178 hectares during the 2000-2020 period. Changes occur in forest areas, mixed gardens, shrubs, and rice fields which have decreased, on the other hand, settlements, plantations and open land have expanded. Furthermore, there are two sub-elements that are the priority for policy direction to reduce the rate of land use change, namely making regulations and firm sanctions on land use errors (E3) and consistency in enforcing land use laws (E4).
Co-Authors Agung Prayitno Akbarullah Aldi, Rahmad Aldri Frinaldi Ali Amran Alifa Putri, Dian Ayu Lestari Amini, Aisyah Andrian Andrian Annur, Latifa ANWAR, AZHARIL NAUFAL Aprizon Putra Ardin, Dea Silvia Arif Rahman Hakim Arif Setiawan Arif, Rahman Aswin, Zeus Marullah Azzahra, Nabila Barlin, Eri Catri, Indra Dasman Lanin Dedi Hermon DEFITA, NILA RAHMAD Dian Adhetya Arif Didik Taryana Dilla, Fadilla dion, nofrion Endah Purwaningsih Eni Kamal Eri Barlian Erianjoni Erianjoni Fadila Fardilla, Midratul Fauzan, Muhammad Irsyad Fitra.R, Muhammad Afif Fitri, Marisa Meliana Fitri, Reno Aidil Giofandi, Eggy Arya Gusman , Mulya Hadi, Shopian Hari Asri, Hazqan Haryeni Heldi Heldi Heldi, Heldi Hidayat S, Syaiful Ikrar Jamika, Fadel Indang Dewata Indriana Indriana, Indriana Jamika, Fadel Ikrar Jelibseda Jelibseda, Jelibseda Latuconsina, Fachrul Mandasari, Wiwik Riana Mandeli, Riso Sari Meuraksa, Irawati Monica, Fitrya Muchtar, Bustari Muhammad Fajri Muhayatul, Muhayatul Mulya Gusman Nevy Sandra Novita, Tila NUR EFENDI Nurlaeli Rachmawati Koerniawan, Rina Oktavia, Elfitri Paus Iskarni Pratama, Reski Putra, Surya Eka Rachrin, Rachma Deli Rahayu, Youngky Gerre Rahmadani Siregar, Dewi Rembrandt, Rembrandt Rery Novio Rinaldi Rinaldi Salsabila, Ilham Sandi Perdani, Agung Sekarrini, Cipta Putri Siti Fatimah Suhendrinal Sukaesih, Iis Syafardi, Zulhendra Syafri Anwar Syafri, Rifki Randa Syah, Nur Hasan Syamsul Bachri Syawal, Habib Muhammad Triyatno Umar, Genius Wulandari, Diana Wulandari, Silviani Yaumal Arbi Zaim, Ryanda Luthfi Zuhrita, Anissa Zuldani, Irwan