PERAN TEGAKAN SENGON DI HUTAN TANAMAN INDUSTRI DALAM MITIGASI PERUBAHAN IKLIM GLOBAL (The Role of Sengon’s Stand at Forest Plantation in Global Climate Change Mitigation)

ABSTRACTThis research aims to estimate the biomass, carbon storage, carbon dioxide uptake andoxygen produced by sengon (Paraserianthes falcataria (L.) Nielsen) stand aged 9, 11and 13 years in IUPHHK-HTI PT Parwata Rimba, Central Kalimantan. Estimated ofbiomass, carbon stock, CO2 uptake and Oxygen produced using allometric equations.The results showed that the storage of sengon standing biomass aged 9,11 and 13 yearsranged from 110.71 to 200.94 tons/ha, carbon stock ranged from 52.03 to 94.44 tons C/ha, CO2 uptake ranged from 190.79 to 259.13 tons CO2/ha and Oxygen produced around138.75 to 251.84 tons O2/ha. The total of biomass, carbon stock, CO2 uptake and Oxygenproduced by sengon stands at forest plantations are large enough to have an importantrole in global climate change mitigation in the forestry sector.Keywords: biomassa, climate change, forest plantation, karbon, sengon

KARAKTERISTIK ARANG AKTIF AKASIA (ACACIA MANGIUM WILLD) YANG DIAPLIKASIKAN SEBAGAI BAHAN UNTUK MENINGKATKAN KUALITAS AIR

The production volume or amount of Acacia wood used is generally low compared to thevolume of wood harvested. Not a few woods that are cut cause wood harvesting wastesuch as branches and twigs. One of the uses is processing the waste into activatedcharcoal. Activated charcoal is charcoal whose cavities or pores are cleaned from othercompounds so that the adsorption power of liquids and gases increases. This researchuses the Acacia wood of the stem, branches and twigs which is first through thecarbonization process and then used as activated charcoal. The active charcoal testsinclude yield, moisture content, volatile matter content, ash content, carbon boundcontent, absorption of benzene, absorption of iodine and absorption of methylene blue.Acacia quality test results of the stem, branches and twigs show that the activatedcharcoal of the stem has better quality than the active charcoal of branches and twigs.Overall the results of testing the quality of activated charcoal not all treatments meet therequirements of SNI 06-3730-1995, but when compared with the requirements of thequality of pharmaceutical chemistry, all tests for each treatment meet the qualitystandard requirements. The application of activated charcoal to drilled well water doesnot all improve water quality but still qualifies the drinking water quality standardsMinister of Health Regulation No: 416/Menkes/Per/IX /1990.Keywords: Active Charcoal, Acacia, Trunk, Branches, Branches, Drilling Well Water

VALUASI TANAMAN OBAT DI DESA PETUK BUKIT KECAMATAN RAKUMPIT KOTA PALANGKA RAYA, KALIMANTAN TENGAH (Medical Plant Valuation at Petuk Bukit Village, Rakumpit Sub District, Palangka Raya City, Central Kalimantan)

The aim of this study to analyze the economic value of medical plants at Petuk BukitVillage, Rakumpit Sub District, Palangka Raya City, Central Kalimantan. This researchwas conducted from June to August 2019 in the Rakumpit sub-district of CentralKalimantan, precisely in Petuk Bukit village. The primary data were collected using asurvey method. Data analyze to predicted the economic value, income levels, andwelfare level. The result showed that there are 12 types of medical plants that potentialyhave economic value. The income of Petuk Bukit Village from medical plants and nonmedical plants business were obtained Rp. 3.342.420.000/year. The correlation ofspearman is 0.45. The income level from medical plants is moderat to the welfare ofsociety.Keywords: Business, medical plants, Petuk Bukit Village

PENGGUNAAN MEDIA TANAH PADA PROSES PEWARNAAN ALAMI TERHADAP ROTAN UNTUK KERAJINAN

Proses pewarnaan rotan dilakukan dengan menggunakan dua jenis tanah sebagai mediaperendaman yaitu tanah lempung yang diperoleh dari desa Gohong KabupatenKahayan Hilir dan tanah berpasir yang ada di kota Palangka Raya. Pengenalan dauntepanggang sebagai pewarna alami yang aman bagi kesehatan dan lingkungan, mampumemberikan variasi warna yang menarik untuk mengembangkan berbagai motif desainanyaman rotan terutama bagi perajin anyaman rotan yang dijadikan mitra yaitu DutaDare. Tujuan penulisan ini adalah membandingkan dua jenis tanah yaitu lempung danpasir sebagai media perendaman rotan yang terlebih dahulu direbus dengan dauntepanggang, PEsehingga menghasilkan produk yang mampu bersaing dengan berbagaimodifikasi tren warna masa kini dengan nilai jual yang tinggi.Metode pelaksanaan melalui penyampaian materi, Tanya jawab, praktek langsungbersama mitra, dan melakukan evaluasi terhadap hasil kegiatan. Pewarnaan rotandirendam dengan tanah lempung menghasilkan warna hitam mengkilap, sedangkanperlakuan dengan tanah pasir menghasilkan rotan dengan warna abu-abu yang tidakmenarik.Kata Kunci: Tanah, pewarnaan rotan, anyaman rotan

KELAS KUAT KAYU TUMIH (Combretocarpus rotundatus (Miq.) Danser) BERDASARKAN BAGIAN BATANG (The the physical and mechanical Properties of Tumih Wood Based on Section Stem)

Tumih wood (Combretocarpus rotundatus (Miq.) Danser) is classified as an unknowntype of wood which is widely grown in peat swamp forests in Central Kalimantan. Thisstudy aims to analyze the physical properties and mechanical properties of wood in axialand radial directions so that they can be utilized properly. The results of the studyresulted in fresh water content and dry air content of wood air, each of which was71,58% and 19,33%, kiln dry weight 0,72, tangential shrinkage 9,68%, radial shrinkage5,02% and longitudinal shrinkage 0,19%. Testing of mechanical properties resulted in aflexural firmness of 618,33 kg/cm2, compressive strength parallel to the fiber 333,27kg/cm2, shear constancy 92,02 kg/cm2, hardness 355,60 kg/cm2, and stiffness at 19,50kg/cm2. Based on the Indonesian Wood Construction Regulations Standard (PKKI) NI 5-1961 tumih wood is included as a strong class III of Indonesian wood, so it is quite wellused for home building raw materials, beams, floor and wall boards, door/windowframes, and furniture.Keywords: tumih wood, physical properties, and mechanical properties.

PERTUMBUHAN TANAMAN JELUTUNG RAWA (Diera lowii) DI LAHAN RAWA GAMBUT KABUPATEN PULANG PISAU, KALIMANTAN TENGAH (Growth of Jelutung rawa (Diera lowii) at the Peat Swamp Land in Pulang Pisau District, Cetral Kalimantan)

Plantation of jelutung rawa (Diera lowii) project has been conducted by many localpeoples, aspecialy at the Pulang Pisau District, Central Kalimantan. The purpose of thisresearch was to analyze the growth of Jelutung rawa (Diera lowii) at the Peat SwampLand in Pulang Pisau District, Cetral Kalimantan. The research was conducted atJabiren Village, Pulang Pisau Disttrict, Central Kalimantan start from July to September2019. Researct result showed that mean annual increment (MAI)-diameters of jelutungrawa at 4, 6, 7, 10, 12 dan 13 years old namely 2.52 cm-2, 2.52 cm-2, 2.80 cm-2, 2.22 cm2, 2,14 cm-2and 2,02 cm-2 respectively. Meanwhile, at the same of ages, height of jelutungrawa namely 4.88 m, 6.50 m, 10.84 m, 11.29 m, 16.17 m, and 19.30 m respectively.Polynomial growth model of jelutung rawa for their diameter and height are y = -3.825941 + 4.1244995x + (-0.140316)x2and y = 3.562047 + 0.212857x + 0.72187x2respectively with coefficient of determination namely 62% and 82% respectively.Keywords: Diameter, Dyera lowii, growth, height, polinomial,

https://doi.org/10.36873/jht.v14i1.327

ABSTRACTThis research aimed to investigate the Willingness to Pay (WTP) for mangroveconservation of local communities at Salut Mengkabong Lagoon, Tuaran based on theamount of fees imposed on them. The content is based on questionnaire survey providedto local communities from Mangrove Forest Produce (MFP) to their perception inconservation programme. The survey was conducted with a priod of 7 month startedfrom September 2016 until March 2017. Contingent Valuation Method (CVM) was usedto calculate the Willingness to Pay (WTP) whereby 100 respondents were asked tocomplete the questionnaire. From the analysis, it showed that the WTP of localcommunities were affected by their monthly income. Regression model analysis withWTP = -0.087* (monthly income) + 1.789 has been formed. Whereas, the value ofmangrove forest produce (MFP) in Salut Mengkabong Lagoon has been calculated with atotal of RM728 for the direct product while for the non-direct products such as crab,bivalves, seashells and fishes cost about RM721 to RM2472 in a year. The studydocumented mangrove forest contribution to local communities in Salut MengkabongLagoon such as timber; Rhizophora mucronata and Avicennia spp, Seafood; Scyllaserrata, Geloina coaxans, various type of fishes and seashell. From the result, it washope that this study can promote a win-win situation to both local community andstakeholders to come out with an effective supervision to ensure the long-lastingdependency of local communities to the mangrove forests without undermining theirsocio-economic wellbeing.Keywords: Salut Mengkabong Lagoon, Mangroves Forest Produce, local community