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All Journal Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) ULIN: Jurnal Hutan Tropis Jurnal Agriment ABDIKU : Jurnal Pengabdian Masyarakat Universitas Mulawarman
Wahjuni Hartati
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Agriculture, Biological Sciences & Forestry Humanities Earth & Planetary Sciences Education Environmental Science Other

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Pemecahan dormansi benih kemenyan (Styrax sumatranus J.J. SM) dengan perlakuan perendaman dan pemeraman Marjenah, Marjenah; Kiswanto, Kiswanto; Simanjuntak, Janri; Hartati, Wahjuni; Syahrinudin, Syahrinudin
ULIN: Jurnal Hutan Tropis Vol 8, No 2 (2024)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32522/ujht.v8i2.14860

Abstract

Kemenyan (Styrax sumatranus J.J. Sm) termasuk salah satu jenis tumbuhan penghasil resin. Getah kemenyan merupakan komoditi khas Sumatra Utara yang bernilai ekonomi tinggi.  Tujuan penelitian ini untuk mengetahui pengaruh variasi perendaman dan pemeraman perkecambahan benih terhadap persentase kecambah, daya kecambah, dan laju perkecambahan kemenyan (Styrax sumatranus J.J. Sm). Penelitian ini menggunakan pola Rancangan Acak Lengkap Faktorial dengan      perlakuan perendaman (A) yang terdiri dari 4 level yaitu A0 (tidak direndam) A1 (direndam dalam air mengalir), A2 (direndam dalam air kelapa), A3 (direndam dalam air biasa) dan perlakuan pemeraman (B) yang terdiri dari 4 kategori yaitu  B0 (tidak diperam), B1 (diperam 1 hari), B2 (diperam 2 hari), B3 (diperam 3 hari). Dua faktor tersebut dikombinasikan sehingga terdapat 16 kombinasi perlakuan dan 3 kali ulangan untuk setiap kombinasi perlakuan. Hasil penelitian menunjukkan bahwa ada pengaruh antara kombinasi pemeraman dan perendaman terhadap benih kemenyan (Styrax sumatranus J.J. Sm). Benih kemenyan yang direndam dengan air kelapa serta lamanya pemeraman, memberikan pengaruh terhadap beberapa parameter yaitu persentase hidup kecambah sebesar 67%, rataan daya kecambah sebesar 75%, rata-rata hari berkecambah yaitu 82 hari.
Biochar and liquid fertilizer differently affect bulk density of Spodosols and Ultisols Hartati, Wahjuni; Sherlyani, Stella; Syahrinudin, Syahrinudin; Sudarmadji, Triyono
ULIN: Jurnal Hutan Tropis Vol 9, No 1 (2025)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32522/ujht.v9i1.16916

Abstract

Ultisols and Spodosols are soils with contrasting properties - Ultisols are clay-rich while Spodosols are sand-dominated. Soil bulk density, which can limit fertility, is an important property needing improvement in these degraded soils. This study aimed to determine how applying biochar combined with liquid fertilizer affects the bulk density of these soils. The research design was a Randomized Complete Block Design (RCBD) with biochar application set as the research factor and length of biochar soaking in liquid organic fertilizer (LOF) set as the research block. Bulk density sampling occurred at three moisture levels - mornings, afternoons, and evenings after watering. Overall, the two soil types responded differently to biochar treatment. Immersion duration and moisture level at sampling did not significantly impact bulk density
The Urban Forests Affecting the Environmental Parameters in Makassar City, Indonesia Mukrimin; Hasanuddin, Hasanuddin; Sultan, Sultan; Pratiwi, Asti; Hartati, Wahjuni
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 15 No 2 (2025): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.15.2.335

Abstract

The urban forests in every city are very important to creating comfortable urban conditions for the community. The existence of urban forests, such as city parks, urban forests, and fields, can provide a sense of comfort to the community both thermally and visually. In addition, urban forests also act as microclimate ameliorators and noise reducers. The importance of this research is that it is expected to provide additional information and reference materials to identify the factors that contribute to thermal comfort in green open spaces in Makassar City. This study aims to analyze the thermal comfort of some green open spaces in Makassar City. The methodology of this research involves a field survey that measures climate factors such as temperature, humidity, sunlight intensity, noise, and wind speed. Thus, it can be concluded that if increasing the urban forest area in urban areas will have a positive impact on comfort, improve air quality, water, soil, and biodiversity, as well as enhance public health and welfare. Enhancing urban forests requires an approach that involves good urban planning, supportive policies, community participation, and the adoption of green technologies across the board, particularly in Makassar City.
Pencegahan Pencemaran Lingkungan dari Limbah Plastik dengan Pelatihan Pembuatan Ecobrick Hartati, Wahjuni; Maula, Athiyatul; Ananta, Dita Amelia; Indriyanti, Gusti; Utomo, Faisal Prasetya; Rahayu, Indah; Larissa, Astrid Attha
ABDIKU: Jurnal Pengabdian Masyarakat Universitas Mulawarman Vol. 3 No. 2 (2024): ABDIKU : Jurnal Pengabdian Masyarakat Universitas Mulawarman
Publisher : Fakultas Kehutanan dan Lingkungan Tropis, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32522/abdiku.v3i2.1622

Abstract

Adiwiyata schools are part of a program encouraging the creation of knowledge and awareness among school residents in environmental conservation. SMP Negeri 1 Sangasanga is one such school with an Adiwiyata program; however, significant plastic waste is still found around the school environment. Ecobrick represents a creative and innovative effort to address the problem of plastic waste pollution. The objectives of this activity are: 1. To raise awareness among students of SMP Negeri 1 Sangasanga about the impact of plastic pollution on the environment and the importance of sustainable plastic waste management; 2. To train students in making ecobricks as a creative solution to reduce plastic waste and transform it into a useful resource; 3. To integrate ecobrick production into school activities to foster a culture of waste management and environmental awareness among students. The methods used include socialization of ecobrick introduction, explanation of ecobrick making, and practice in assembling ecobricks into products as a form of plastic waste utilization. The results obtained from this activity show that students have gained knowledge and skills to process plastic waste into useful products through ecobrick, such as chairs
Less Steep Slope Stored More Soil C than Those Steep Ones: A Case Study in HPFU Samarinda hartati, Wahjuni; Piri, Wandri L; Sudarmadji, Triyono; Syahrinudin, Syahrinudin
JURNAL AGRIMENT Vol. 9 No. 2 (2024): Desember 2024
Publisher : Politeknik Pertanian Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/jurnalagriment.v9i2.3193

Abstract

Global warming is a phenomenon of increasing global temperature of the earth from year to year due to the greenhouse effect that contains greenhouse gases (GHG) one of which is carbon dioxide (CO2), thereby increasing the absorption of heat released by the earth into the atmosphere, forests have a contribution as a provider of environmental services as an absorber of carbon dioxide (CO2). Hutan Pendidikan Fahutan Unmul (HPFU) is an area with forest status in Samarinda and is currently still dominated by land cover in the form of young secondary forest. this study was conducted to estimate the C reserves stored in the soil under the young secondary forest cover, determine its contribution to the total C reserves in the young secondary forest and estimate the potential of the total C reserves in the soil in HPFU. PUP is made measuring 20 m x 20 m on secondary forest cover with gentle slope (L2) to slightly steep (L3) at the top, middle, and bottom of the slope. In each slope do repetition as much as 3 times. In each PUP, a whole soil sample was taken using a sample ring and the soil was disturbed using a hoe at 3 depths,namely : 0-10 cm, 10-20 cm, and 20-30 cm. young secondary forest cover dominates the HPFU area on a gentle to rather steep slope. the C content of soil as deep as 30 cm in the sloping Slope area is 75.29 tons/ha with a total reserve of C is 5,499.80 tons and in a rather steep slope area is 54.69 tons/ha with a total reserve of C is 3,822. 83 tons
Co-Authors Ananta, Dita Amelia Hasanuddin Hasanuddin Indriyanti, Gusti Larissa, Astrid Attha Marjenah, Marjenah Maula, Athiyatul Mukrimin Piri, Wandri L Pratiwi, Asti Rahayu, Indah RR. Ella Evrita Hestiandari Sherlyani, Stella Simanjuntak, Janri Sudarmadji, Triyono Sultan Sultan Syahrinudin, Syahrinudin Utomo, Faisal Prasetya