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All Journal Daun: Jurnal Ilmiah Pertanian dan Kehutanan Jurnal Ilmu dan Teknologi Kayu Tropis Tropical Wetland Journal Agrienvi : Jurnal Ilmu Pertanian Bubungan Tinggi: Jurnal Pengabdian Masyarakat Jurnal Hutan Tropika BINOMIAL : Jurnal Pendidikan Biologi Jurnal Teknologi Berkelanjutan JURNAL HUTAN TROPIS Jurnal Manusia dan Lingkungan Jurnal Penelitian Hasil Hutan
Wahyu Supriyati
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Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Environmental Science Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences Transportation Other

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Heartwood Proportion and Physical-Mechanical Properties of Three Diameter Class of Gelam Wood (Melaleuca sp) from Central Kalimantan Wahyu Supriyati; Tibertius A Prayitno; Soemardi Soemardi; Sri M Marsoem
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 1 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (187.396 KB) | DOI: 10.51850/jitkt.v12i1.83

Abstract

Gelam wood commonly use for house pole in peatswamp land of Central Kalimantan. However increasing the utilization of gelam wood lead to harvest a small diameter of trees. This research aims to study the percentage of heartwood, physical mechanical properties of gelam wood of different diameter class.Keyword: diameter class, gelam wood, heart wood, physical mechanical properties
Sifat Fisika Mekanika Briket Arang dengan Komposisi Jenis Kayu Gerunggang (Cratoxylon arborescens) dan Kayu Tumih (Combretocarpus rotundatus) Alpian Alpian; Raynold Panjaitan; Adi Jaya; Yanciluk Yanciluk; Wahyu Supriyati Supriyati; Emmy U. Antang
Daun: Jurnal Ilmiah Pertanian dan Kehutanan Vol 7 No 1 (2020): Daun: Jurnal Ilmiah Pertanian dan Kehutanan
Publisher : ​Institute for Researches and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/daun.v7i1.1602

Abstract

Energy is a major component in human daily life so it is needed in daily activities and production. The main source of energy used today comes from fossils such as petroleum, natural gas and coal which are non-renewable, unsustainable, limited in existence and can damage the environment. One of the more environmentally friendly and renewable energy substitutes is charcoal briquettes. The raw material used for the manufacture of charcoal briquettes is charcoal powder from biomass waste in land clearing in the Village of Kalampangan, Palangka Raya City. The fire burn the Kalampangan urban area in 2015. The burning area makes succession and overgrown of pioneer plants such as Gerunggang and Tumih that cannot use maximum. Both types of wood can be used as material for making charcoal briquettes. The purpose of this study is to determine the physical and mechanical properties of charcoal briquettes produced from biomass waste without burning fuel with several raw material compositions from Gerunggang and Tumih charcoal powders. The charcoal briquettes refer to the Indonesian National Standard (SNI 01-6235-2000) and ESDM Permen No. No. 047 of 2006. The number of treatments was 5 (T100: G0; T25: G75; T50: G50; T75: G25 and T0: G100) of 3 replications. The composition with the most potential test results in accordance with the both of standards that used is the composition of T100: G0 with a lower moisture content of 10.10%, density 0.98 g/cm3, and compressive strength 25.68 kg/cm2.
Sifat Mekanika Kayu Tumeh (Combretocarpus rotundatus Dans) pada Arah Radial Wahyu Supriyati; Alpian Alpian
Daun: Jurnal Ilmiah Pertanian dan Kehutanan Vol 7 No 2 (2020): Daun: Jurnal Ilmiah Pertanian dan Kehutanan
Publisher : ​Institute for Researches and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/daun.v7i2.2015

Abstract

Communities in Kalimantan areas need wood for building materials. They use Tumeh wood (Combretocarpus rotundatus Dans) because of its found abundantly in forest area in Central Kalimantan. Tumeh is a kind of pioneer. Wood parts affect the quality of wood. The purpose of this study was to study the effect of the radial position on the mechanical properties of wood tumeh. The properties of the wood analyzed is hardness, Modukus of Rupture (MOR) and Mdukus of Elasticity (MOE) (British Standard No.373,1957). Data analysis using Completely Randomized Design (CRD. The results show that the location in the radial direction has no significant effect on hardness, MOR and MOE values.The highest value of hardness and MOR was near the bark and then decreased in the middle and near the heart, respectively. Meanwhile, the highest MOE value is near the heart, then decreases in the middle and near the bark, respectively This research can be continued on the physical and chemical properties of the wood for a more comprehensive understanding. Research in different directions and at different diameters can also be carried out as a comparison.
PENGARUH KONSENTRASI BORAKS PADA PENGAWETAN KAYU TUMIH (Combretocarpus rotundatus (Miq.) Danser) DALAM KETAHANANNYA TERHADAP SERANGAN RAYAP KAYU KERING (Cryptotermes cynocephalus Light.) Wahyu Supriyati; Gloria Putri Novelia M; Yanciluk; Alpian
Agrienvi: Jurnal Ilmu Pertanian Vol. 15 No. 1 (2021): Journal Agrienvi
Publisher : Agrienvi: Jurnal Ilmu Pertanian

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

Abstract

Tumih wood (Combretocarpus rotundatus (Miq.) Danser) was found abundanly in Central Kalimantan but only has durable class 3. The preservation needed to extend the life service of the wood. The aims of this research was to know the effect of borax preservatives at various concentrations to the retention of Tumih wood, to know the mortality of dry wood termite (Cryptotermes cynocephalus Light) and weight loss of the tumih wood against the termite. Wood testing against drywood termites reffer to the Indonesian National Standard (SNI 01-2707-2006). Data analysis using a Completely Randomized Design (CRD) of 4 concentrations and 3 replications. The result showed that concentration has significant effect on retention. The highest retention value was found at concentration of 7% (B3) that was 10,34 kg/m3. Preservative concentration had a significant effect to termite mortality. The concentration of 3% was able to against the termite attacks on Tumih wood (mortality value was 93,3%). Concentration has not significant effect to the weight loss of Tumih wood
BEBERAPA TANAMAN PASCA KEBAKARAN DI DESA TRAHEAN KABUPATEN BARITO UTARA KALIMANTAN TENGAH Yanne Yanne; Yetrie Ludang; Wahyu Supriyati
Agrienvi: Jurnal Ilmu Pertanian Vol. 16 No. 1 (2022): Agrienvi : Jurnal Ilmu Pertanian
Publisher : Agrienvi: Jurnal Ilmu Pertanian

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

Abstract

Pembakaran dan bencana kebakaran hutan di Kalimantan Tengah sering terjadi pada pada musim kemarau, tidak terkecuali terjadi pada Kabupaten Barito Utara. Apa pun penyebabnya, bencana kebakaran hutan dan lahan memiliki konsekuensi yang sangat besar bagi lingkungan, tumbuh-tumbuhan dan hewan liar. Pencegahan dapat dilakukan dengan penanaman tanaman yang tahan terhadap kebakaran yaitu dapat tumbuh kembali pasca kebakaran. Tujuan penelitian ini adalah untuk mengetahui beberapa tanaman pasca kebakaran. Penelitian dilakukan dengan metode observasi dan survei pada lokasi penelitian. Hasil penelitian menunjukkan bahwa keanekaragamanan tanaman yang tumbuh pasca kebakaran mempunyai bentuk adaptasi vegetasi terhadap kebakaran diantaranya memiliki tunas yang dapat tumbuh aktif karena tekanan lingkungan, stimulasi pembungaan dan retensi benih. Beberapa jenis tumbuhan yang mampu tumbuh dan beradaptasi pada areal pasca kebakaran di desa Trahean Kecamatan Teweh Selatan Kabupaten Barito Utara, adalah Pinus (Pinus merkusii), Laban (Vitex pubescens Vahl), Garunggang (Cratoxylon arborescens), Bambu (Bambusoideae), Sungkai (Peronema canescens) dan Paku-pakuan.
IDENTIFIKASI JENIS TANAMAN SEBAGAI PAKAN LEBAH MADU KELULUT (Trigona spp.) di KPHP KATINGAN HULU Alpian Alpian; Yorlandi Kornelius Yoga; Nuwa Nuwa; Reri Yulianti; Herwin Joni; Wahyu Supriyati
Jurnal Hutan Tropis Vol 10, No 3 (2022): Jurnal Hutan Tropis Volume 10 Nomer 3 Edisi November 2022
Publisher : Lambung Mangkurat University-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jht.v10i3.14970

Abstract

Identifikasi jenis tumbuhan sebagai pakan lebah kelulut (Trigona spp.) di KPHP Katingan Hulu Unit XVII. Tujuan penelitian adalah untuk mengidentifikasi jenis pakan Lebah Madu Kelulut (Trigona spp.) di KPHP Katingan Hulu Unit XVII dengan metode jalur/metode river survey. Jalur pengamatan ditentukan secara Purposive sampling sebanyak 4 jalur dengan panjang per jalur = 500 m dan jumlah luas jalur secara keseluruhan yaitu 2 Ha. Adapun jumlah seluruh plot pengamatan adalah 21 plot dengan perhitungan luas 21 plot x 400 m2 = 8.400 m2/10.000 m2 = 0,84 Ha dan ukuran plot yaitu 20 m x 20 m dengan jarak antar plot yaitu 100 m. Berdasarkan hasil pengamatan di lapangan didapatkan 25 jenis tanaman yang menjadi pakan lebah kelulut (Trigona spp.). Terdapat 14 jenis vegetasi tingkat semai dengan Indeks Nilai Penting (INP) tertinggi ada pada jenis karamunting (Rhodomyrtus tomentosa) dengan nilai 71,94% dan yang terendah ada pada jenis belimbing waluh (Averrhoa carambola) dengan nilai 4,81%, putri malu (Mimosa pudica) dengan nilai 4,81%, aster putih (Symphyotrichum ericoides) dengan nilai 4,81% dan bayam duri (Amaranthus spinosus) dengan nilai 4,81%. Pada vegetasi tingkat pancang terdapat 4 jenis tanaman  dengan Indeks Nilai Penting (INP) tertinggi ada pada jenis mangga (Mangifera indica) dengan nilai 97,21% dan yang terendah ada pada jenis gaharu (Aquilaria malaccensis) dengan nilai 19,44%. Pada vegetasi tingkat tiang terdapat 6 jenis tanaman dengan Indeks Nilai Penting (INP) tertinggi ada pada jenis akasia (Acacia mangium) dengan nilai 95,81% dan yang terendah ada pada jenis mangga (Mangifera indica) dengan nilai 20,08%. Serta terdapat 10 jenis vegetasi tingkat pohon dengan Indeks Nilai Penting (INP) tertinggi ada pada jenis akasia (Acacia mangium) dengan nilai 110,91% dan yang terendah ada pada jenis johar (Senna siamea) dengan nilai 10,18%.
PENGEMBANGAN PERANGKAT PEMBELAJARAN IPA BERBASIS LESSON STUDY UNTUK MENINGKATKAN KOLABORASI GURU DAN KEMAMPUAN BERPIKIR KRITIS SISWA Salasiah Salasiah; Agus Haryono; Wahyu Supriyati
Binomial Vol 6 No 1 (2023): Jurnal Binomial
Publisher : Pendidikan Biologi FKIP Universitas Muslim Maros

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46918/bn.v6i1.1728

Abstract

Kegiatan pembelajaran yang baik berawal dari kesiapan perangkat pembelajaran yang digunakan oleh guru. Penelitian ini bertujuan untuk merancang perangkat pembelajaran secara kolaboratif antar guru dalam kegiatan Lesson Study, untuk meningkatkan kemampuan berpikir kritis siswa. Penelitian ini merupakan penelitian pengembangan (Research and Development) berbasis Lesson Study yang terdiri dari rangkaian kegiatan Plan, Do, dan See. Penelitian ini dilaksanakan pada semester ganjil tahun akademik 2022/2023 kelas 7.7 SMPN 6 kota Palangka Raya. Perangkat pembelajaran yang dikembangkan berupa RPP, LKPD dan Penilaian. Hasil penelitian menunjukkan bahwa perangkat pembelajaran yang dikembangkan valid oleh validator dan observer dengan rata-rata nilai kevalidan 3,56 kategori valid. Perangkat pembelajaran yang dihasilkan efektif berdasarkan hasil belajar siswa dengan nilai rata-rata postest 80,17, respon positif dari guru rata-rata skor 81,25 dan respon siswa dengan rata-rata skor 82,33 menunjukkan bahwa perangkat pembelajaran praktis untuk digunakan. Kegiatan Lesson Study meningkatkan keterampilan kolaborasi guru dalam menyampaikan pendapat, memperhatikan guru lain, merespon guru lain dengan rata-rata skor 84,33 kriteria baik. Dengan demikian perangkat pembelajaran yang dihasilkan dapat diterapkan dalam pembelajaran karena memiliki kategori valid, efektif, dan praktis.
KEARIFAN LOKAL PENGGUNAAN KAYU GELAM DALAM TANAH RAWA GAMBUT DI KALIMANTAN TENGAH (Local Wisdom of Utilization of Gelam Wood on Peatswamp Land of Central Kalimantan) Wahyu Supriyati; Tibertius Agus Prayitno; Sumardi Sumardi; Sri Nugroho Marsoem
Jurnal Manusia dan Lingkungan Vol 22, No 1 (2015): Maret
Publisher : Pusat Studi Lingkungan Hidup Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jml.18729

Abstract

ABSTRAKMasyarakat di daerah rawa gambut memerlukan kayu sebagai cerucuk atau tiang pancang rumah. Kayu Gelam (Maleleuca sp) ditemukan melimpah di hutan rawa gambut di Kalimantan. Kayu Gelam termasuk kelas awet 3 yang berarti hanya dapat dipergunakan di bila berhubungan dengan tanah selama 3 tahun. Kenyataan yang ada kayu Gelam sebagai cerucuk /tiang pancang rumah dalam tanah rawa tetap kuat lebih selama lebih dari 30 tahun. Pemanfaatan kayu ini mendukung untuk konservasi hutan rawa gambut. Tujuan dari penelitian ini adalah untuk melestarikan hutan di peatwamp melalui penghematan pemanfaatan kayu yaitu dengan mempelajari pengaruh lama penimbunan dan letak radial terhadap sifat fisika, mekanika dan kandungan silika kayu Gelam. Penelitian dilakukan pada kayu Gelam yang telah ditimbun dalam rawa gambut selama 10, 19, 31 dan 38 tahun. Sifat kayu yang dianalisis adalah sifat fisika mekanika mengikuti BS No 373. Uji silika dengan spektrometer. Analisis menggunakan rancangan acak lengkap dengan faktorial. Hasil menunjukkan bahwa lama penimbunan meningkatkan berat jenis kayu Gelam secara signifikan. Semakin lama penimbunan, semakin tinggi berat jenis (0,54-0,75). Persamaan yang diperoleh Y=0,449+0,063x1+0,01x2 (Y=BJ kering tanur, x1= lama penimbunan, x2= letak radial). Pengaruh lama penimbunan pada kekerasan sejalan dengan BJ. Kadar silika kayu Gelam meningkat dengan semakin lama penimbunan. Lama penimbunan (10-38 tahun) meningkatkan BJ kering tanur 28,13 %, kekerasan 12,83%; kandungan silika 1,25%. Penggunaan kayu Gelam merupakan kearifan lokal yang terbukti melestarikan lingkungan karena menghemat pemanfaatan kayu yang dinyatakan dengan kualitas kayu Gelam yang relatif tidak menurun dalam penimbunan.ABSTRACTLocal community on peatswamp area need woods as poles. Gelam (Maleleuca sp) wood is found abundantly in peatswamp forest area in Kalimantan. It is 3th durability class and expected to withstand up to three years of utilitation outdoor. However, gelam wood used for house poles in peatswamp could be still strong enough more than 30 years. Utilization this wood supports to conservation of peatswamp forest. The aim of this research is to study the effect of burying time and radial position to physical, mechanical properties and silica content of gelam The research was conducted by gelam wood which buried in peatswamp for several years namely 10, 19, 31 and 38 years. Wood properties that analyzed were physical and mechanical properties followed the British Standard No. 373. Silica testing by spectrometer. Analyze use factorial experimental of Completely Random Design. The result showed that wood specific gravity significantly increase with the lenght of burying time. The longer burying time, the higher wood specific gravity (0.54 to 0.75). Equation Y=0.449+0.063x1+0.01x2 (Y=oven dry SG, x1=burying time, x2=radial posision). The effect of burying time on hardness parallel with wood specific gravity. Burying time factor increase value of specific gravity 28.13 %, hardness 12.83%; silica content 1.25%. The use of gelam wood support to conserve the environment because it saves wood utilization expressed by gelam wood quality relatively undegradation in burial.
SIFAT FISIKA DAN LAJU PENGERINGAN ALAMI PADA ARAH AKSIAL DAN RADIAL KAYU GERUNGGANG (Cratoxilon arborensis) DI KALIMANTAN TENGAH Wahyu Supriyati; Alpian Alpian
Agrienvi: Jurnal Ilmu Pertanian Vol. 17 No. 01 (2023): Juni 2023 : Agrienvi : Jurnal Ilmu Pertanian
Publisher : Agrienvi: Jurnal Ilmu Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/aev.v17i01.10623

Abstract

Wood needs to be dried until it reaches the amount of moisture content (KA) that meets the needs of the buyer, namely the environmental conditions where the wood will be used later. Position on the stem can affect the properties of wood. The aims of this study were a) to analyze the physical properties in the axial and radial directions of Gerunggang wood, namely: maximum moisture content, air moisture content, specific gravity, shrinkage; b) Analyze the natural drying rate in the axial and radial directions of Gerunggang wood. The method used in the physical properties test refers to British standards. Parameters measured were specific gravity, moisture content and radial/tangential shrinkage, natural drying rate. Statistical analysis used a completely randomized design with a 2x2 factorial. The results showed that the location in the axial and radial directions of the wood had no significant effect on the physical properties of gerunggang wood;. The natural drying rate of Gerunggang wood is significantly influenced by its location in the axial direction, where the base has a lower value than the tip.
Komposisi Jenis Vegetasi dan Karakteristik Kimia Tanah pada Tapak Tegakan Sengon dan Karet di Desa Gohong, Kabupaten Pulang Pisau Setiarno Setiarno; Amelia Noviyanti; Ajun Junaedi; Wahyu Supriyati; Rosdiana Rosdiana
HUTAN TROPIKA Vol 18 No 1 (2023): Volume 18 Nomor 1 Tahun 2023
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v18i1.8750

Abstract

Plant community structure on a site has a relationship with its soil’s chemical characteristics. The research was conducted in the area of sengon and rubber stands in the administrative area of Gohong Village, Pulang Pisau District. This study aims to describe and analyze the structure of plant communities and soil chemical characteristics on the sengon and rubber stands site in Gohong Village, Pulang Pisau District. Vegetation data were collected using the stratified plot method on 9 plots placed on each stand, while soil samples for soil chemical analysis were a composite mixture of 9 drill points from each site at two depth levels, namely 0-30cm and 31-49cm. Plants found in the study site as many as 15 species belonging to 12 family, in the site of sengon stands as many as 10 species while in the site of rubber stands as many as six species. Plant species with the highest INP in the site of sengon stands are sengon and galam in the site of rubber stands are rubber. ID values range from 0.2-1.0. The depth of the peat at the research site was measured to be <50 cm with chemical characteristics of C-Organic content <5%, which was low at 4.89-6.98%, and soil acidity was very acid (pH <4.5) with a range of pH values of 3.59-3.80 and Basa Saturation (BS) was all very low with values ranging from 1.89-3.27%. Soil N-total content varied from low to medium with values ranging from 0.14-0.41%. P-availability was very low with simultaneous values of 1.18-1.41 ppm, and 0.98, and 1.19 ppm; K-dd, Ca-dd, Mg-dd, and Na-dd values were all shallow at 0.03-0.05cmol(+).kg-1, and 0.07-0.10 cmol(+).kg-1 then Ca is 0.83-1.44 cmol(+).kg-1; then Mg is the same value of 0.10 cmol(+).kg-1, and Na is 0.05-0.11 cmol(+).kg-1, while KTK is very high with a value of 49.38-60.05 cmol(+).kg-1
Co-Authors Abdul Hadjranul Fatah Abudarin Abudarin Agus Haryono Ahmad Mujaffar Ajun Junaedi Alpian Alpian Alpian Alpian Amelia Noviyanti Andi Andi Ayub Wanasetya Ayub Wanasetya Christy, Eva Oktoberyani Chuchita Defi Sianipar Desi Natalia Koroh Dessy Analinta Desy Natalia Koroh Elma Wona Purba Emmy U. Antang Enti Rimma Silalahi Firdara, Eritha Kristiana Gimson Luhan Gloria Putri Novelia M Gloria Putri Novelia M Grace Sisca Hendrik Segah, Hendrik Herianto I Nyoman Sudyana I Nyoman Surasana Joni Parnasip Sinaga Joni, Herwin Jumri Jumri Jumri Jumri, Jumri Kilinton Sihombing Lilis Sihombing Mahdi Santoso Nuwa Nuwa Nuwa Nuwa Nuwa Nuwa, Nuwa Oksal, Efriyana Pratama, Redi Saputra Prayitno, T. A. Purba, Elma Wona Putra, Apri Wijaya Rahel Yunita Simatupang Raynold Panjaitan Reri Yulianti Retno Agnestisia Rivaldi Robekka Rosdiana Rosdiana Salasiah Salasiah Sari Mayawati Sarinah Setiarno Setiarno Sihombing, Lilis Silvianingsih, Yosefin Ari Soaloon Sinaga Soemardi Soemardi Sri M Marsoem Sri Nugroho Marsoem Sri Nugroho Marsoem Sri Nugroho Marsoem Sugeng Mashabhi Sumardi . Sumardi Sumardi Sumardi Sumardi Surasana, I Nyoman T. A. Prayitno Tibertius A Prayitno Tibertius Agus Prayitno Tibertius Agus Prayitno Yanciluk Yanciluk, Yanciluk Yanne Yanne Yetrie Ludang Yorlandi Kornelius Yoga Zimon Pereiz