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Supardiono, Supardiono
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Monitoring Kualitas Air Berdasarkan Parameter Fisika, Kimia, dan Biologi di Sungai Belimbing, Lombok Timur Jupri, Ahmad; Aisyah, Nurul; Supardiono, Supardiono; Hidayati, Lilik; Fadli, Fadli; Husain, Pahmi
Educatoria : Jurnal Ilmiah Ilmu Pendidikan Vol. 5 No. 3 (2025): July
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/educatoria.v5i3.712

Abstract

River water quality monitoring is necessary to maintain the sustainability of aquatic ecosystems and ensure the availability of clean water. The Belimbing River in East Lombok Regency has the potential to experience quality decline due to domestic and agricultural activities in the surrounding area. This study was conducted in the dry season (April) and the rainy season (October) 2024 with sampling at three points (upstream, middle, and downstream). The sampling method used the grab sampling technique, with three replications at each point. Samples were stored in sterile bottles, placed in a cool box at a temperature of ±4°C, and analyzed a maximum of 24 hours after collection. The parameters analyzed included physical (TSS), chemical (pH, DO, BOD, COD, nitrate, and phosphate), and biological (fecal coliform). The analysis was carried out in the laboratory using the standard method SNI 6989.72:2009, with a UV-Vis spectrophotometer for nitrate and phosphate, an oven for TSS, and a titration method for BOD and COD. Fecal coliform analysis used the Most Probable Number (MPN) method. The results showed that most parameters exceeded the Class II water quality standards set by Government Regulation Number 22 of 2021, especially in the downstream area during the dry season. TSS values ​​reached 134 mg/L, BOD 12 mg/L, COD 115 mg/L, and fecal coliform 9,600 MPN/100 mL. The main sources of pollution were domestic waste, agricultural runoff, and poor sanitation. It can be concluded that the water quality of the Belimbing River indicates moderate to severe pollution. Integrated watershed management, community-based waste management, and environmental education are needed to sustainably restore the river's condition.
Analysis of Tree Fall Hazard Risk: A Case Study at the University of Mataram Campus Suripto; Supardiono, Supardiono; Rahayu, Rachmawati Noviana; Dujana, Lalu Muhammad Aby; Genggelang, Feby Ayu
Jurnal Penelitian Pendidikan IPA Vol 11 No 10 (2025): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i10.13045

Abstract

The Mataram University campus has shade trees in almost all area units, some of which are still quite ideal and some of which show problems with tree architecture deviations, such as trunk declivity and canopy inclination, which can cause the risk of tree fall. This study was conducted to analyze the distribution of tree fall risk based on tall, trunk declivity and canopy inclination on the Mataram University campus. The sample area was taken using the purposive sampling method and then sampling trees in each sample area unit using the quarter method. Tree variables observed were tall, trunk declivity and canopy inclination. The data were processed respectively to produce tree tall, trunk declivity, and canopy inclination classes. These data were then further analysed in an integrated manner to produce a value of tree-fall hazard risk. These tree-fall hazard values were interpreted into 5 categories, namely not hazardous, somewhat hazardous, quite hazardus, hazardous, and very hazardous. The results show that of the 108 shade trees on the Mataram University campus, 38.01% of the trees were in categories requiring immediate attention or action (moderately hazardous to very hazardous). Zone 1 was the only zone with the highest risk (0.93% very hazardous).
Analysis of Leaf Area Index of Shade Trees and Its Relationship with the Discomfort Index: A Case Study at the University of Mataram Campus Suripto, Suripto; Rahayu, Rachmawati Noviana; Supardiono, Supardiono; Dujana, Lalu Muhammad Aby; Genggelang, Feby Ayu
Jurnal Pijar Mipa Vol. 20 No. 7 (2025): in Progress
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i7.10455

Abstract

The development of shade trees on the Mataram University campus is intended to maintain environmental comfort, as well as add beauty. The microclimate softening function of trees is largely determined by the density of their canopies, known as the leaf area index (LAI). Various LAI measurement methods have been developed, which are generally more suitable for assessing tree productivity but less valid for assessing the ability to soften the microclimate or decrease the discomfort index (DI). This study was conducted to analyze the distribution of LAI of shade trees and their relationship with the DI on the Mataram University campus. To obtain a more valid LAI value, the leaf area variable measured was the leaf area forming the canopy, replacing the leaf area on the canopy surface, as was done in previous studies. Microclimate variables measured to determine the discomfort index (DI) were air temperature and relative humidity. The results showed that the LAI of 108 trees (33 species) spread across 9 zones within the Mataram University campus ranges from 1.2630 (very small category) to 9.6735 (very large category). The DI values under the canopy of trees ranged from 23.225 (quite comfortable category) to 26.869 (somewhat comfortable category). The relationship between LAI of shade trees and DI on the campus of Mataram University was linear and negative, with the resulting regression equation being y = 28.1204-0.4749x. If LAI increased, then DI tended to decrease; conversely, if DI increased, then LAI tended to decrease. The function of campus trees in softening the microclimate can be enhanced by improving their LAI.
Co-Authors Afrilia, Dinda Ahmad Jupri Aini, Diah Kurotul Akbar, Cahyo Aditya Atikah, Tika Dewi Budhy Kurniawan Cahyani, Inda Nur Dujana, Lalu Muhammad Aby Dwiyanti, Amalya Ernawati Ernawati Fadli Fadli Galuh Tresnani Genggelang, Feby Ayu Hanuun, Kamila Hidayati, Cita Rizqi Hilman Ahyadi Husain, Pahmi Immy Suci Rohyani Islami, Ekila Al ISLAMUL HADI Isrowati Isrowati, Isrowati Komang Adi Kurniawan Saputra Lilik Hidayati, Lilik Maharadatunkamsi Maharadatunkamsi, Maharadatunkamsi Muhammad Rijal Alfian Nurhidayatullah Nurhidayatullah, Nurhidayatullah Nurlaila Mubarokah Nurul Aisyah Nurul Inayah Pratama, Hari Arya Putra, Hengki Adriyan Putri, Nurliana Hasan Rahayu, Rachmawati Noviana Reda Sadewo, Imran Sigit Wiantoro, Sigit Suripto Suripto Suripto Wahyuni, Elisa Darmasari Yuliadi Zamroni