Article Per Year (5 Year)
p-Index From 2021 - 2026
2.036
P-Index
This Author published in this journals
All Journal Jurnal Natur Indonesia Tunas Geografi Jurnal Agrista Peronema Forestry Science Journal Jurnal Ilmu-Ilmu Pertanian Indonesia Jurnal Agribisnis Indonesia (Journal of Indonesian Agribusiness) Jurnal Geografi SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Serambi Engineering Jurnal Agrium Pelita Masyarakat Multidiciplinary Output Research for Actual and International Issue (Morfai Journal) CONSEN: Indonesian Journal of Community Services and Engagement Innovative: Journal Of Social Science Research INTERNATIONAL JOURNAL OF ECONOMIC LITERATURE Rona Teknik Pertanian Journal of Environmental and Development Studies
Delvian Delvian
Universitas Sumatera Utara
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy 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 Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

Published : 23 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : Tunas Geografi

 1 
Vegetation Analysis of Mount Sipiso-Piso Forest Area, Merek District, Karo Regency, North Sumatra Ariasta Bereona Tarigan; Delvian Delvian; T Alief Aththorick
Tunas Geografi Vol 11, No 2 (2022): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v11i2.39140

Abstract

Mount Sipiso-piso is an Old Volcanic Mountain and part of the Lake Toba Catchment Area (DTA). The location of the Forest on Mount Sipiso-piso is unique because the site of the Forest is at the top of Mount Sipiso-Piso. The area below the mountain is a dense Forest that stands in the peak area of Mount Sipiso-Piso has a role in maintaining water flows in the Mount Sipiso-Piso area, becoming a place for rainwater absorption, and maintaining ecosystem stability so that erosion or landslides do not occur in vulnerable areas. This study aimed to look at the diversity and evenness of Mount Sipiso-piso Forest vegetation types. Data analysis techniques include Important Value Index (INP), Diversity Index (H'), and Evenness Index (E). The results showed that 20 families and 23 plant species from 1539 individuals were found in the field. The Important Value Index (INP) indicates that different individuals dominate the forest community at each level. The index of the diversity of Mount Sipiso-Piso Forest vegetation is categorized as moderate in the saplings, poles, and trees class and the low category in the undergrowth, woody shrubs, and seedlings class. For the species evenness index, the category is expected in the undergrowth and seedling class, the medium type is in the woody shrub and tree class, and the high sort is in the sapling and pole class.Keywords: Sipiso-Piso Mountain, Forest, Vegetation, Diversity, Evenness. 
Spatial Study of Land Cover Change and Degradation of Environmental Carrying Capacity of Settlements in the Coastal Area of Belawan Bahagia 2004-2025 Sihotang, Krisda Fadila; Aulia, Dwira Nirfalini; Delvian, Delvian; Rahmawaty, Rahmawaty; Siahaan, Nelson Manumpak
Tunas Geografi Vol. 14 No. 1 (2025): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v14i1.65577

Abstract

Spatial thinking skills are essential in everyday life. These skills can be improved through geography learning. Various studies on efforts to improve spatial thinking skills through geography education have been conducted in Indonesia; however, none have specifically examined the various models, teaching materials, and learning outcomes. Through a comprehensive review of previous findings, this study was conducted to fill this gap. The results of this study can be helpful for teachers and researchers in further developing geography education. This study employs a qualitative research design, specifically a document study or literature review. Publish or Perish software is used in the process of exploring or conducting literature searches. Through the initial search process, a total of 61 documents were obtained. These documents were then reviewed individually, resulting in a total of 16 documents that met the inclusion criteria. The results of the study showed that the most widely applied geography learning model was Project-Based Learning, followed by Discovery Learning and EarthComm. The teaching materials used are Disaster and Disaster Management, Basics of Mapping, Remote Sensing, and Geographic Information Systems (GIS), Atmosphere, Hydrosphere, Lithosphere Dynamics and Its Impact on Life, and Potential of Indonesian Marine Waters. Through the application of the learning model, various improvements were obtained in several indicators of spatial skills. The Project-Based Learning model is the most successful approach in improving various indicators of spatial thinking skills, including Analogy, Aura, Pattern, Association, Form, and Analysis.
Co-Authors Abdul Rauf Agree Hutami Sinaga Agustrisno, Agustrisno Alief Aththorick Ameilia Zuliyanti Siregar Ameilia Zuliyanti Siregar Ariasta Bereona Tarigan Arida Susilowati Iswanto Arrasyid, Nurfida Khairina Aththorick, T. Alief Aulia, Dwira Nirfalini Aznawi, Andi Aznan Bejo Slamet Deni Elfiati Diana Sofia Hanafiah Dianingrum, Tengku Elfiati, Deni Elfiati etti sartina siregar Febri Yoanita Harahap Fikarwin Zuska Heni Pujiastuti Ichwana Ichwana Isnen Fitri Jumilawaty, Erni Jumilawaty Juneith O S Nadeak Kiking Ritarwan M. Basyuni Masitta Tanjung Mohammad Basyuni Mubaraq, Alfian Mubaraq Nauly, Meutia Nauly Nelly Anna Netti Herlina Nius Abdi Ginting Oding affandi R. Hamdani Harahap Rahmawaty, Rahmawaty Rangkuti, Ahmad Baiquni Rauf Rauf Ria Pertiwi Sianturi Ridwanti Batubara Risnasari, Iwan Risnasari Siahaan, Nelson Manumpak Sihotang, Krisda Fadila Sivaipram, Itchika Sivaipram Slamet, Bejo Slamet Solihin Solihin Sumono Sumono Susilowati, Arida Susilowati Tampubolon, Jamson H Tampubolon, Jamson Hasintongan Usnawiyah Usnawiyah, Usnawiyah Wahyu Fahreza Wika Astuti Sagala Zumar Halim Rambe