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All Journal Pendas : Jurnah Ilmiah Pendidikan Dasar JURNAL BUANA JURNAL PENDIDIKAN TAMBUSAI Human Care Journal Science and Environmental Journals for Postgraduate Jurnal Buana JURNAL BUANA
Iswandi Umar
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Humanities Earth & Planetary Sciences Education Environmental Science Health Professions Immunology & microbiology Medicine & Pharmacology Nursing Public Health Social Sciences Other

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PEMETAAN PERSEBARAN RAFFLESIA DI KAWASAN CAGAR ALAM MANINJAU KABUPATEN AGAM Wely Yelvia Sartika; Iswandi Umar
JURNAL BUANA Vol 6 No 3 (2022): Edisi Sistem Informasi Geografi
Publisher : DEPARTEMEN GEOGRAFI FIS UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/buana.v6i3.2155

Abstract

This research was carried out in the Maninjau Nature Reserve, Agam Regency to determine the distribution of Rafflesia, map habitat suitability and determine physical factors the most influential on the habitat Rafflesia. In analyzing the distribution and suitability of the habitat Rafflesia using the method Species Distribution Modeling (SDM) with Maximum Entropy (MaxEnt) analysis of the habitat indicators Rafflesia including height, slope, land cover, soil type and distance from the river. Based on the results of the study found 13 growing points of Rafflesia as many as 35 individuals Rafflesia consisting of 1 individual in the blooming condition, 10 individuals in the post-bloom condition, and 16 individuals in the knob condition. The results of Maxent's modeling on the distribution and characteristics of the habitat Rafflesia in the Maninjau Nature Reserve are as follows: found at an altitude between 950-1100 mdpl which is in forest land cover type, is on a slope ranging from 0-40% which is found in soil type Inceptisols, distribution point Rafflesia found to be at a distance from the river between 250-400 meters, where the farther from the spring there Rafflesia are fewer. The results of model performance validation show that the habitat suitability model Rafflesia in the Maninjau Nature Reserve is included in the very good category (AUC = 0.982).
PEMETAAN PERSEBARAN KAWASAN KELOMPOK TANI HUTAN (KTH) BERBASIS KAUM DI NAGARI PASIA LAWEH KECAMATAN PALUPUH, KABUPATEN AGAM khaidir ilqam ramadhan; Iswandi Umar
JURNAL BUANA Vol 6 No 2 (2022): Edisi Geografi Sosial
Publisher : DEPARTEMEN GEOGRAFI FIS UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/buana.v6i2.2170

Abstract

ABSTRACT This study aims to: 1) find out how the distribution and extent of the community-based Forest Farmers Group area in Nagari Pasia Laweh. 2) determine land tenure by the people in Nagari Pasia Laweh, and 3) find out changes in land use from 2015 to 2020 in Nagari Pasia. Laweh.This type of research uses quantitative methods. The data collection techniques include the process of measuring and taking data directly to the field using a GPS (Global Positioning System). Sources of data from this study using primary data obtained and collected by researchers directly in the field and using secondary data obtained from journals and related agencies. This study found: 1) The distribution and extent of forest farmer groups spread over seven jorongs, including Jorong Sungai Guntuang, Pasia Laweh, Palupuah, Aur Kuning, Lurah Dalam, Angge and Palimbatan with the highest area being in KTH Kaum Datuak Manjuang Basa with an area of ​​16 Ha, while the lowest KTH area is in Jorong Pasia Laweh with an area of ​​0.6 Ha. 2) Land tenure by people. From observations obtained by secondary data, it shows that in several jorongs there are slight changes, either changes in the direction of decreasing or increasing, due to several factors, including: (a) there is a sale and purchase transaction for the Forest Farmer Group Area, (b) there is a division of inheritance that causes a people to increase or decrease the land they own. (c) the existence of land use that was originally as agricultural land changed to other land uses. 3) The dynamics of land use from 2015-2020 from the results obtained through a GIS analysis of land use in 2015 in Nagari Pasia Laweh shows that almost 80% of the Group Area Forest Farmers still have green open space vegetated land with the highest dominance being shrubs in 2015 dominated by shrubs with an area of ​​13.06 ha or 57% of the total area after 5 years in 2020 the widest land use is in mixed gardens with 17.65 ha or 41% of the total area in 2015 and 2020. Keywords: Distribution & Area, Control, Land Use Change
ANALISIS KAWASAN LONGSOR MENGGUNAKAN PEMROGRAMAN R DI KECAMATAN AKABILURU KABUPATEN LIMAPULUH KOTA Isra Haryati Diva; Iswandi Umar
JURNAL BUANA Vol 6 No 4 (2022): Edisi Geografi Bencana
Publisher : DEPARTEMEN GEOGRAFI FIS UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/buana.v6i4.2248

Abstract

The purpose of research is (1) to determine the location of the occurrence of landslides in 2016-2021. (2) knowing the dominant factor of landslide using R programming. (3) knowing the landslide susceptibility area in Akabiluru District. The variables used are the point of occurrence of landslides, slope, slope direction, source rock, soil type, rainfall, land use, vegetation density and landform. The landslide point is divided into 50% test data and 50% train data. The method used is bivariate statistics assisted by the R programming language. The results of the study are that there are 30 points of landslide occurrence from 2016-2021 which are spread in Akabiluru District. Factors dominant the occurrence of landslides are slope with AUC 0.78, land use with AUC 0.72, source rock with AUC 0.69, landforms with AUC 0.68, aspect with AUC 0.71, soil type with AUC 0.65. From the total WoE calculation, the AUC value is 0.75 and produces a map of the landslide susceptibility zone which consists of 4 classes, namely high class (20.84%), middle class (26.35%), low class (25.74%) and very low class (27.07% ).
KAPASITAS MASYARAKAT DALAM MENGHADAPI ANCAMAN BENCANA ERUPSI GUNUNG MARAPI DI NAGARI PARIANGAN KECAMATAN PARIANGAN leony melta putri; Iswandi Umar
JURNAL BUANA Vol 6 No 4 (2022): Edisi Geografi Bencana
Publisher : DEPARTEMEN GEOGRAFI FIS UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/buana.v6i4.2264

Abstract

Abstract This study aims to determine the capacity of the community in dealing with the threat of the eruption of Mount Marapi in Nagari Pariangan, Pariangan District. This study uses a quantitative method using a descriptive approach, this study uses a questionnaire as a research instrument. The population in this study was the community of Nagari Pariangan, amounting to 5,562 people. The subjects of this study were 98 people who were determined by random sampling method. The technique used is descriptive statistical analysis by calculating the percentage. The results of this study are seen from the five Hyogo Frameworks of action or Hyogo Framework. Based on these five parameters, it shows that the community's capacity to deal with the threat of the eruption of Mount Marapi in Nagari Pariangan, Pariangan District, is 64.58% of disaster management rules and institutions in the medium category, early warning is 51.45% in the low category, 47, 76% is about education. in the low category, 48.81% on reducing basic risk factors in the low category, and 56.90% on the development of disaster preparedness in the medium category. With a total percentage of 53.90%, it can be concluded that the community's capacity to face the threat of the eruption of Mount Marapi in Nagari Pariangan, Pariangan District is still relatively low. Therefore, the capacity of the people of Nagari Pariangan must be increased again because based on the results of research, the people of Nagari Pariangan are still not ready to face disasters that can occur at any time. Keywords: Capacity, Public, Merapi Volcano Eruption
DAMPAK BENCANA BANJIR DAN PERSEPSI MASYARAKAT TERHADAP PROGRAM NORMALISASI SUNGAI BATANG SINAMAR DI NAGARI TARAM KECAMATAN HARAU KABUPATEN LIMAPULUH KOTA Heri Faldi; Iswandi Umar
JURNAL BUANA Vol 6 No 4 (2022): Edisi Geografi Bencana
Publisher : DEPARTEMEN GEOGRAFI FIS UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/buana.v6i4.2387

Abstract

The puposes of this research are (1) the impact of the flood on the people of Jorong Subarang and Jorong Tanjung Kubang in Nagari Taram (2) Perceptions of the people of Jorong Subarang and Jorong Tanjung Kubang in Nagari Taram. The type of research used is Mixed Methods. The data analysis technique used was a questionnaire based on the Likert scale and the Miles and Huberman data analysis model. The results of this study indicate that (1) The impact of floods on physical variables in the indicators of market damage is classified as very good, housing damage is classified as severe. The social variable is the contamination of clean water sources, the environmental variable is the damage to plants/plants, the environmental variable is the occurrence of water pollution from the river due to flood material, the economic variable is lost and damaged property, the economic variable is the inhibition of livelihoods, all of which are classified as severe. (2) Community perceptions of the program river normalization, indicators of counseling on river normalization, residents understand the results of counseling, have a positive impact on society, make rivers better at flowing water downstream of rivers, minimize flooding, make river water flow not overflow into residential areas, make river cliffs to be solid, the loss of the costs of cleaning and repairing the house are all classified as right and damage the economy of the citizens are classified as doubtful. Keywords : Flood Impact, River Normalization, Community Perception
Strategi Mitigasi Bencana Tsunami Pada Kecamatan Linggo Sari Baganti Puti Tiara Dewi; Iswandi Umar
Jurnal Pendidikan Tambusai Vol. 9 No. 1 (2025)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v9i1.24912

Abstract

Tsunami adalah fenomena alam yang terjadi akibat aktivitas tektonik di dasar laut yang mengakibatkan pemindahan volume air laut dan berdampak pada masuknya air laut ke daratan. Bencana tsunami tersebut mengakibatkan kekhawatiran terhadap wilayah yang dominan berada di dekat pesisir. Salah satu wilayah tersebut yaitu Kecamatan Linggo Sari Baganti, Kabupaten Pesisir Selatan, Provinsi Sumatera Barat. Tujuan dari penelitian ini yaitu untuk mengetahui zona bahaya bencana tsunami yang ada pada Kecamatan Linggo Sari Baganti dan Strategi mitigasi bencana tsunami pada Kecamatan Linggo Sari Baganti. Penelitian ini menggunakan metode deskriptif kuantitatif yang nantinya menggunakan metode Berrymen perhitungan Hloss dan metode Interpretative Structural Modelling (ISM) dalam pengambilan keputusan. Hasil dari penelitian ini yaitu bahaya inundasi tsunami 10 m, 20 m, dan 30 m. Dengan total luasan secara keseluruhan yang terdampak inundasi bahaya tsunami 10 meter 563.05 ha, inundasi tsunami 20 meter 1278.15 ha, dan total luas yang terdampak inundasi tsunami 30 m 2252.12 ha. Kemudian strategi mitigasi bencana tsunami yang harus di benahi terlebih dahulu adalah elemen pengembangan sistem peringatan dini (A1) dan rencana tata ruang yang lebih terperinci (A5). Jadi, penelitian ini memberikan informasi bagaimana bahaya tsunami pada kecamatan Linggo Sari Baganti serta strategi mitigasi bencana tsunami yang perlu diperhatikan.
EFEKTIVITAS MODEL PEMBELAJARAN KOOPERATIF TIPE THINK PAIR SHARE (TPS) UNTUK MENINGKATKAN HASIL BELAJAR GEOGRAFI PADA MATERI ATMOSFER SISWA KELAS X SMAN 1 KAMPAR UTARA, RIAU Purba, nurfadillahpurba; Iswandi Umar
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 10 No. 02 (2025): Volume 10 No. 02 Juni 2025 In Build
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v10i02.26117

Abstract

The purpose of this study is to investigate the effectiveness of the cooperative learning model Think Pair Share (TPS) in enhancing students’ achievement in atmospheric geography among tenth-grade students at SMAN 1 Kampar Utara, Riau. The research method used is a quasi-experimental design with before and after group design. Purposive sampling was used as the sampling method, comprising two classes: the experimental class X3 with 30 students taught according to the TPS model, and the control class X1 with 30 students taught according to a conventional lecture-based method. The instrument used was a 20-question multiple-choice learning test, administered before and after treatment. The results of the study indicated a significant improvement in the average score of the experimental class, rising from 35.3 (pre-test) to 83.5 (post-test), while the control class increased from 32.5 to 68.8. An independent t-test on the post-test results yielded a significance value of 0.001 (< 0.05), indicating a meaningful difference between the two groups. Furthermore, the N-Gain analysis revealed a score of 75.09% (high category) in the experimental class and 53.67% (moderate category) in the control class. Therefore, it can be concluded that the implementation of the TPS model is effective in enhancing students’ learning outcomes in geography. Penelitian ini bertujuan untuk mengkaji keefektifan model pembelajaran kooperatif tipe Think Pair Share (TPS) dalam meningkatkan hasil belajar peserta didik pada materi geografi atmosfer di kelas X SMAN 1 Kampar Utara, Riau. Metode penelitian yang digunakan adalah quasi eksperimen dengan desain pretest-posttest group design. Metode pengambilan sampel yang digunakan adalah purposive sampling, yaitu terdiri dari dua kelas yaitu kelas eksperimen X3 yang berjumlah 30 siswa yang diajar dengan model TPS dan kelas kontrol X1 yang berjumlah 30 siswa yang diajar dengan metode ceramah konvensional. Tes pembelajaran pilihan ganda sebanyak 20 pertanyaan digunakan sebagai instrumen, yang diberikan sebelum dan sesudah perlakuan. Hasil penelitian menunjukkan peningkatan signifikan pada skor rata-rata kelas eksperimen dari 35,3 (pretest) menjadi 83,5 (posttest), sedangkan pada kelas kontrol meningkat dari 32,5 menjadi 68,8. Uji t independen terhadap hasil posttest menunjukkan nilai signifikansi 0,001 (< 0,05), mengindikasikan adanya perbedaan bermakna antara kedua kelompok. Selain itu, analisis N-Gain menunjukkan skor 75,09% (kategori tinggi) pada kelas eksperimen, dan 53,67% (kategori sedang) pada kelas kontrol. Dengan demikian, dapat disimpulkan bahwa penerapan model TPS efektif dalam meningkatkan hasil belajar geografi siswa..
Co-Authors Abdul Razak Aprizon Putra Cipta Estri Sekarrini Dedi Hermon Eri Barlian Frinsis Warmansyah Heri Faldi Isra Haryati Diva khaidir ilqam ramadhan leony melta putri Lia Hasmita Lismomon Nata melki melki agestira Memo Memito Purba, nurfadillahpurba Puti Tiara Dewi Ressa Andriani Andriani Tri Oktaviani Wely Yelvia Sartika Yosifa yosifa