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All Journal GEOGRAPHIA: Jurnal Pendidikan dan Penelitian Geografi Jurnal Social Science
Sri Sulastriningsih
Program Studi Geografi Universitas Negeri Manado
Humanities Earth & Planetary Sciences Education Environmental Science Law, Crime, Criminology & Criminal Justice Social Sciences Other

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ANALISIS PERUBAHAN PENGGUNAAN LAHAN UNTUK EVALUASI KEJADIAN BANJIR DI KOTA MANADO Helena Sri Sulastriningsih; Murni Sulistyaningsih; Irfan Rifani; Muhamad Isa Ramadhan
GEOGRAPHIA : Jurnal Pendidikan dan Penelitian Geografi Vol. 3 No. 1 (2022): Juni
Publisher : Jurusan Pendidikan Geografi Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/gjppg.v3i1.3554

Abstract

This study aims to evaluate land-use changes in the city of Manado against the occurrence of floods in 2021. Analysis of land-use changes was carried out using the overlay method on maps in 2013 and 2020 with the help of GIS. The runoff coefficient value is obtained based on the land use approach by using the runoff coefficient value table to determine the relationship between land use and runoff. The results of the study show that in the period 2013–2020 there have been changes in land use that disrupt hydrological functions. Forest land, mixed gardens, and shrubs decreased by 529.83 ha (3.48%), and conversely built-up land and open land increased by 124.14 ha (0.83%) which triggered an increase in surface runoff causing flooding. The increasing fulfillment of living needs along with population growth of 34,339 people (8.18%) in 7 years requires additional land for settlement, agriculture, and supporting infrastructure. Land-use change weakens hydrological functions and contributes to increased runoff. 17% of the rainfall in 2013 and 18% in 2020 will be a runoff. Rainfall in January 2014 and January 2021 was classified as very high (>500 mm). It can be stated that the flash floods that occurred in Manado in January 2014 and 2021 were triggered by land use and high rainfall factors.
ANALISIS KUALITAS AIR SUNGAI POOPOH KECAMATAN TOMBARIRI KABUPATEN MINAHASA Martino Elvis Presley Sukiman; Maxi Tendean; Sri Sulastriningsih
GEOGRAPHIA : Jurnal Pendidikan dan Penelitian Geografi Vol. 2 No. 1 (2021): Juni
Publisher : Jurusan Pendidikan Geografi Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1149.812 KB) | DOI: 10.53682/gjppg.v2i1.837

Abstract

The problem in this study is the existence of community activities that dispose of household waste and toilet waste directly into the Poopoh River. This study aims to analyze and obtain river water quality data. This type of research is a quantitative research using a fixed sample water sampling method. The parameters measured were pH, DO (Dissolved Oxygen), BOD (Biological Oxygen Demand), and TSS (Total Suspended Solid). The results showed that there had been a decrease in the quality of river water in the downstream part of the river as seen from the results of laboratory tests which stated that the pH level in the upstream part of the river reached 6.94 and downstream increased to 7.98. The level of BOD in the upper reaches of the river is 1.8 and in the lower reaches of the river rises to 26.95. The DO level in the upstream part of the river is 7.5 and at the downstream level, it drops to 1.62. The TSS level in the upper reaches of the river is 5 and in the lower reaches of the river, it has increased to 20. It can be seen that there has been a decrease in the quality of river water from upstream to downstream, especially in the parameters of BOD and DO.
Dampak Sosial dan Ekonomi Aktivitas Penambangan Batu Split di Kecamatan Tabukan Utara Kabupaten Kepulauan Sangihe Sandri Reza Lawendatu; Helena Sri Sulastriningsih; Xaverius Erick Lobja; Ellen Eva Poli
Jurnal Social Science Vol. 11 No. 2 (2023): Desember
Publisher : Fakultas Ilmu Sosial dan Hukum

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to describe the social and economic conditions of the split stone-picking community in Kalebuka 1 village and Kalebuka village. The research focus consists of social conditions, which include cooperation, and economic conditions, which include changes in people's living standards. The results showed that the extraction of split stones in the villages of Kalebuka 1 and Kalebuka had both positive and negative social and economic impacts. Positive social impacts include the establishment of cooperation, growing work motivation, an increase in income, and the occurrence of social interactions. While the social impact is negative, the occurrence of conflicts is due to fighting over land for split stone extraction. Extraction of split stone has an economic impact including becoming a source of income, increasing job opportunities, becoming a source of income in fulfilling needs, and opening up business opportunities so that it has an impact on people's welfare.
Co-Authors Ellen Eva Poli Irfan Rifani Martino Elvis Presley Sukiman Maxi Tendean Ramadhan, Muhamad Isa Sandri Reza Lawendatu Xaverius Erick Lobja