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All Journal Geosfera: Jurnal Penelitian Geografi Jurnal Riset dan Pengabdian Interdisipliner Jurnal Penelitian Pendidikan Geografi
Sri Maryati
Program Studi Pendidikan Geografi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Gorontalo
Humanities Earth & Planetary Sciences Education Environmental Science Social Sciences Other

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Karakteristik Pohon Peneduh Pada Koridor Jalan Perkotaan Di Kota Gorontalo Saptan Gobel; Sri Maryati; M. Iqbal Liayong Pratama
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Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jrpi.v3i3.39493

Abstract

Shade trees are an important element of roadside green corridors that contribute to improving urban environmental quality. This study aims to identify and analyze the characteristics of shade trees along arterial and collector roads in Gorontalo City. A quantitative descriptive method was applied using a spatial analysis approach based on Geographic Information Systems. Data were collected through field observation, vegetation inventory, GPS-based coordinate recording, tree characteristic measurements, and documentation. The results show that there were 1,140 shade trees consisting of 15 species. Mahogany was the dominant species, with 333 trees or 29.21%. Tree characteristics were dominated by medium height of 5–10 m at 60.44%, crown width of 2.5–5.0 m at 57.81%, and trunk diameter of 50–100 cm at 50.88%. The general physical condition of the trees was mostly good, particularly trunk condition at 99.56%, leaf condition at 95.88%, branching condition at 91.58%, and root condition at 69.56%. These findings indicate that shade trees in Gorontalo City support ecological functions, aesthetic quality, and urban environmental comfort.
Pemetaan Geologi Desa Kopi, Kecamatan Bulango Utara, Kabupaten Bone Bolango, Gorontalo Mirdayanti Dachi; Noviar Akase; Sri Maryati
Geosfera: Jurnal Penelitian Geografi Vol 5, No 1 (2026): Geosfera : Jurnal Penelitian Geografi
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/geojpg.v5i1.39447

Abstract

Detailed geological information regarding the geomorphology, lithology, and geological structures of Kopi Village, North Bulango District, Bone Bolango Regency, remains limited, despite its importance for geological research, natural resource management, and regional development planning. This study aims to characterize the geomorphological, lithological, and structural features of the area through detailed geological mapping at a scale of 1:10,000. The research employed literature review, field geological surveys, geomorphological observations, outcrop investigations, structural measurements, rock sampling, and megascopic and petrographic analyses. The results reveal four lithological units, namely the Andesite Unit, Diorite Unit, Granodiorite Unit, and Alluvial Unit. Geomorphological analysis identified three landform units consisting of Volcanic Hills, Intrusive Hills, and Alluvial Plains. The geological structures are dominated by tension joints with principal orientations of northwest–southeast (NW–SE) and northeast–southwest (NE–SW). Stratigraphic relationships and petrographic characteristics indicate that andesite represents the oldest unit, subsequently intruded by diorite and granodiorite during the Middle Miocene, whereas alluvial deposits constitute the youngest unit formed by surface sedimentation processes. The geological evolution of the study area is interpreted to have been controlled by magmatic and tectonic activities that influenced the development of lithology, geomorphology, and geological structures. The findings provide detailed geological baseline information that can support future geological investigations and geology-based regional management.
Co-Authors Aprilia Mohune Asrul Asrul Daud Yusuf Dhea Amelia A. Banteng Dicky Rahmansyah S. Tone Eki Nurhadi Modanggu Fitryane Lihawa Hendra Bawu Hendra Hendra Hermin Hermin M. Iqbal Liayong Pratama Masruroh Masruroh Mirdayanti Dachi Moch Rio Pambudi Moch.Rio Pambudi Mohamad Alfian Laudji Nining Suko Noviar Akase Nur Aulia Rahmadani Ramla Hartini Melo Ronal Hutagalung Rusiyah, Rusiyah Saptan Gobel Siti Qamariyah Bunga Wahyulin Ws. Harunja Wiwin Kobi Yayuk Septiani Kunai