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All Journal Geosfera: Jurnal Penelitian Geografi JURNAL SAINS GEOGRAFI
Zahra, Ashila Fitria
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Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Environmental Science Social Sciences

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Perubahan Kualitas Perairan Terhadap Keberlangsungan Usaha Budidaya Rumput Laut Di Pulau Pari Arum Sitaresmi, Deyan; Zahra, Ashila Fitria; Rohmana; Adhitama, Rafif Bima; Rosadi, M Imron; Citra, Leysha Adinda; Lestari, Citra; Kusumawati, Lia
Jurnal Sains Geografi Vol 2 No 1 (2024): JURNAL SAINS GEOGRAFI
Publisher : Fakultas Ilmu Sosial dan Hukum, Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JSG.v2i1.04

Abstract

This research aims to analyze the water quality of Pari Island for seaweed cultivation. The main challenge involves the decline in seaweed production and quality, especially after the 2013 reclamation project. This research uses quantitative methods with primary and secondary data collection, water quality analysis involving parameters such as depth, temperature, salinity, pH and brightness, evaluated through the IDW method and weighting. The research results reflect an increase in temperature and salinity, resulting in a decrease in the quality of seaweed cultivation land on Pari Island. Reclamation factors and industrial activities also influence this condition. The seaweed cultivation land suitability map shows a significant decline from 2017 to 2023. The conclusion from research on changes in Pari Island's water quality regarding the sustainability of seaweed cultivation no longer supports optimal seaweed cultivation. The research recommendations highlight the need for sustainable planning and mitigating industrial impacts to support the growth of the seaweed cultivation industry on Pari Island.
Pemetaan Daerah Rawan Erosi di Kecamatan Purwosari, Kabupaten Gunungkidul Berbasis Model USLE Sitaresmi, Deyan Arum; Shofiyani, Virsha; Hutami, Aisahrul; Zahra, Ashila Fitria; Rosadi, Muhamad Imron; Irvi Lestari, Gita Sukma; Januar, Wandi Tri
Geosfera: Jurnal Penelitian Geografi Vol 4, No 2 (2025): Geosfera : Jurnal Penelitian Geografi
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/geojpg.v4i2.35368

Abstract

This study aims to map the erosion hazard levels in Purwosari District, Gunungkidul Regency, Special Region of Yogyakarta, by integrating the Universal Soil Loss Equation (USLE) model with Geographic Information Systems (GIS). The study is motivated by the geomorphological conditions of the karst area, which are inherently susceptible to erosion, coupled with predominant land use in the form of rainfed fields and paddies with minimal vegetation cover. The methodology employs a quantitative descriptive-analytical approach consisting of four main stages: land cover classification, calculation of USLE parameters (R, K, LS, C, and P), spatial overlay to generate the erosion hazard level map, and field validation through observations and interviews with local farmers. The results indicate that approximately 80% of Purwosari District falls within the very low to low erosion hazard categories, while 18.74% is classified as moderate, and the remaining, albeit very small portion, is categorized as high to very high, predominantly in areas with steep slopes and limited vegetation. These findings underscore the need for implementing soil conservation strategies tailored to local characteristics to mitigate the rate of erosion, particularly in highly vulnerable areas. This research is expected to serve as a reference for formulating sustainable land resource management policies in karst regions.
Co-Authors Adhitama, Rafif Bima Arum Sitaresmi, Deyan Citra Lestari Citra, Leysha Adinda Hutami, Aisahrul Irvi Lestari, Gita Sukma Januar, Tri Wandi Kusumawati, Lia Rohmana Rosadi, M Imron Rosadi, Muhamad Imron Shofiyani, Virsha Sitaresmi, Deyan Arum