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ANALISIS BIOMASSA DAN CADANGAN KARBON TANAMAN BAMBU BELANGKE (Gigantochloa pruriens) Bambang Suprihatno; Rasoel Hamidy; Bintal Amin
Jurnal Ilmu Lingkungan Vol 6, No 1 (2012): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.6.1.p.82-92

Abstract

The research was conducted from November 2011 to January 2012 in the mineral soil ofKebun Kayangan, PT Salim Ivomas Pratama to estimate the potential of carbon stock of thebamboo and to quantify the amount of carbon that can be absorbed by bamboo plants. Theresults of the research showed that carbon content of culm biomass from 50.68 to 54.87%(mean of 53.84%), leaf from 47.68 to 53.76% (mean of 51.47%) and twigs/branches from51,97 to 52,86 % (mean of 52.48%). The average of carbon content of the bamboo plantbiomass was 52.60%. Biomass obtained from the bamboo plants with different heights were145.07 g (1 m height), 461.33 g (3 m height), 834.79 g (5 m height), 999.24 g (7 m height),781.14 g (9 m height), 958.31 g (11 m height) and 1,925.67 g (12 m height). The average ofthe bamboo biomass was 872.22 g/individual. The potential of the bamboo biomass from23.47 to 29.82 t ha -1 with a mean of 26.30 t ha-1. Carbon stocks obtained from the bambooplants with different heights were 78.07 g C (1 m height), 248.04 g C (3 m height), 448.64 gC (5 m height), 541.68 g C (7 m height), 425.72 g C (9 m height), 519.67 g C (11 m height),1,029.79 g C (12 m height) and the average was 470.23 g C/individual. The potential ofcarbon stock of the bamboo ranged from 12.61 to 15.93 t C ha-1 with a mean of 14.08 t C ha -1. Total carbon stock in bamboo plantation were 52.55 t C ha-1, which was itemized asfollows : carbon stocks of bamboo 14.08 t C ha -1, under storey 0.11 t C ha-1, litter 2.83 t Cha-1 and soil 35.53 t C ha -1. Allometric equations to estimate of biomass according to high ofbamboo plant was Polynomial Y = - 520.31 + 684.62x – 113.76x2 + 6.0227x3 {Y = biomass(g) and x = plant height (m)}. Allometric equations to estimate carbon stock according tohigh of bamboo plant was Polynomial Y = - 274.64 + 362.45x – 59.81x2 + 3.1594x3 {Y =carbon stocks (g) and x = plant height (m)}.
KAJIAN KEMAMPUAN DRAINASE DALAM MENAMPUNG INTENSITAS HUJAN MAKSIMUM PADA KAWASAN PERUMAHAN DI KELURAHAN DUMAI KOTA Rasoel Hamidy; Mubarak Mubarak; Reni Okta Vironika
Jurnal Ilmu Lingkungan Vol 5, No 1 (2011): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.5.1.p.54-65

Abstract

The purpose of this study is to analyze the maximum precipitation intensity changes between theperiod 2002 - 2009 and know the drainage capacity to accommodate the maximum rainfallintensity. This research was conducted in the Village District Town Dumai, Dumai City who isprone to occurrence of inundation / flooding during rain. The research method using descriptiveof an explorative approach that aims to describe the condition and status of the phenomenon ofthe drainage channel and residential environment. The results showed that rainfall intensity forrainfall duration 30 minutes with 10-year anniversary when obtained at 257.999 mm / hour. Thecalculation of drainage channels that can accommodate a maximum flow rate / peak dischargecontained in SP1 primary drainage and secondary drainage channels SS1, SS4, and SS11. Theinability of other drainse channel accommodate the maximum flow causing inundation /flooding, in addition to blockage of drainage channels by the waste also adds to the severity ofthe situation
Fitoakumulasi Logam Berat Pb dan Cr pada Rhizophora mucronata di Sekitar Kawasan Bekas Tambang Bauksit, Pulau Bintan Diana Azizah; Rasoel Hamidy; Mubarak Mubarak; Efriyeldi Efriyeldi
Dinamika Lingkungan Indonesia Vol 8, No 2 (2021)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (174.497 KB) | DOI: 10.31258/dli.8.2.p.147-153

Abstract

Bintan Island has a high potential for bauxite mining. Many ex-mining areas have not been reclaimed properly, resulting in erosion and accumulation of heavy metals Pb and Cr which are high in the sediment (red-mud) and deposited in the roots of mangrove forests on the coast of Bintan. Rhizophora mucronata is one of the species that dominates the Bintan mangrove forest. The purpose of this study was to determine the phytoaccumulation of Pb and Cr metals in R. mucronata in the former bauxite mining area ofBintan Island. This research was conducted by survey, digested and analysed using Atomic Absorption Spectrophotometer (AAS). The concentrationof Pb and Cr in the sediment, as well as the roots, stems and leaves of R. mucronata were used for the analysis of phytoaccumulation types. The results of the Pb concentration test were higher than Cr. Based on the sampling location, the concentration of Pb metal accumulation in the sediment is Tembeling <Sei Carang <Wacopek <Senggarang, while Cr metal is Tembeling <Wacopek <Sei Carang <Senggarang. The highest metals accumulation in R. mucronata was found in the roots (Pb = 3,3482 ppm, Cr = 0,7664 ppm), while the leaves (Pb = 1,1076 ppm, Cr = 0,0413 ppm) had the lowest concentration. Based on the type of accumulation, R. mucronata absorbs Pb metal with a rhizofiltration mechanism (TF <1), which means that the roots of R. mucronata effectively translocate Pb as a pollutant to its body from the soil. In addition, the bio-concentration factor (BCF) concentration of R. mucronata <1 indicates the role of R. mucronata as a plant that accumulates very little Pb (low accumulator/non-hyperaccumulator). This adaptation mechanism is important information in the rehabilitation of mangrove areas using R. mucronata, because it can still live and grow in an environment contaminated with Pb metal by absorbing a little Pb from the soil and translocating it effectively in its organs.
Tiga dekade laju perubahan garis pantai di Kota Dumai Aras Mulyadi; Rasoel Hamidy; Musrifin Musrifin; Efriyeldi Efriyeldi; Romie Jhonnerie
Dinamika Lingkungan Indonesia Vol 9, No 1 (2022)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (768.884 KB) | DOI: 10.31258/dli.9.1.p.25-31

Abstract

Mapping of coastline changes helps in coastal development and monitoring. The city of Dumai, on the east coast of Riau Province, has undergone significant and radical changes caused by the intervention of humans and nature over the past three decades. This study mapped and measured the rate of change of the coastline of Dumai City for 30 years. The Landsat (TM, and OLI) image series, 1990, 1999, 2008, and 2020 became a data source to generate coastlines through on-screen digitization techniques, then to study the temporal behavior of coastlines using the Digital Shoreline Analysis System (DSAS) and geographic information systems to describe the spatial and temporal variations of coastlines. The results showed that the coastline length during the observation ranged from 123,14 to 125,23 km, while the average accretion rate was 1.17 meters per year while the average abrasion rate was 2.04 meters per year. Those rates of change affected coastline expanded to the sea for 60,82 hectares and eroded 760,20 hectares coastline to the land.
PENGARUH LUAS TEBANGAN HUTAN TANAMAN AKASIA TERHADAP KARAKTERISTIK HIDROGRAF BANJIR Ning Indar Rukmi; Rasoel Hamidy; Mubarak Mubarak
Jurnal Ilmu Lingkungan Vol 7, No 1 (2013): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.7.1.p.68-94

Abstract

One of the forest functions is the protection for water ecosystem along a watershed. Theactivities of extensive acacia logging area near the watershed of Sipatak by PT. SumateraSylva Lestari currently have not paid attention on the environmental condition, especiallythe hydrologic aspect. The present research sought to investigate the effect of the extensivelogging acacia on the flood hydrographic characteristic. The research was expected to comewith the proper acacia logging area. The land coverage and curve number analysis wereperformed using software program ArcView GIS 3.3 which was based on Table SCS CurveNumber. The average rain of the watershed was calculated using Polygon Thiessentechnique and the plan maximum daily rain was obtained from a frequency analysis towardthe average rain of the watershed. The hydrographic units was obtained from 10 floodincidences using Collins’ technique. The scenario of the forest logging pattern was madeaccording to the prevailing provision at PT. Sumatera Sylva Lestari. The floodhydrographic analysis was performed using Software HEC-HMS 2.2.2 by doing acalibration and verification to obtain the watershed parameter which would be used in theflood hydrographic simulation resulting from the logging. The initial value of the subwatershed of Sipatak was 78.558. The logging at sub watershed of Sipatak up to 79.496%resulted in the increase of CN to be 83.49. The increase of the CN resulted in the increaseof the peak debit up to 71.60% and the runoff volume was 71.04%. The trend line of peakdebit increase and the runoff volume resulting from the forest logging depended on thelogging forest area and the rain input. To avoid the over capacity of the watershed ofSipatak, the logging area should be 120.30 hectare or 32.69%. 
Valuasi Ekonomi Ekosistem Mangrove Di Desa Teluk Pambang Kecamatan Bantan Kabupaten Bengkalis Provinsi Riau Langga Qodrina; Rasoel Hamidy; Zulkarnaini Zulkarnaini
Jurnal Ilmu Lingkungan Vol 6, No 2 (2012): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.6.2.p.93-98

Abstract

This research was conducted in Teluk Pambang Village Bantan Sub District BengkalisRegion dated from July to September 2011. This study aims to value the total economicpotential value of mangrove ecosystem in Teluk Pambang Village, determine alternativepattern of utilization and management. The method used in this study was survey method.The economic value was calculated based on the total direct economic value, indirecteconomic value, option value and existence value. This study also calculated net presentvalue (NPV) for 25 years in order to get representation for economic value in future.According to the data analysis, it was found 10 species of mangroves which has economicvalue and 7 species of mangrove fauna. The total economic value for 1 acre of mangroveecosystem was IDR. 1,409,454,390.18 acre-1 y-1 with net present value (NPV) was IDR.12,793,673,903.53 acre-1 for 25 year mangrove rotation cycle. While, the percentagebetween total resources and utilization was only 0.035%. According to this research, it canbe arranged 3 alternatives for utilizations in mangrove area. The best result of the alternativeshas been made is alternative with prioritize for sustainable ecosystem. Moreover, themanagement scheme which can be done for this mangrove area is a model of conservationmanagement with the aim of maintaining the sustainability of environmental services.
KOMPOSISI DAN STRUKTUR PERMUDAAN POHON PIONIR BERDASARKAN JENIS TANAH DI KABUPATEN SIAK Edmond Edwar; Rasoel Hamidy; Sofyan Husein Siregar
Jurnal Ilmu Lingkungan Vol 5, No 2 (2011): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.5.2.p.149-167

Abstract

The results showed that the soil type Latosol consist of 49 species, dominance of the highesttype for Forest Seedlings were Manggis Hutan (Garcinia parvifolia), saplings of Ludai(Sapium beccatum), poles of Mahang (Macaranga gigantea), tree of Sendok-Sendok(Endospermum javanicum). Soil type of Brown Forest Soil consist of 28 species, The highestdominance Seedlings type of Pulai Sudu (Kibatalia boornensis), saplings of Tempinis (Sloetiaelongata), pole of Terap (Artocarpus elasticus), tree of Mahang (Macaranga gigantea). Soiltypes of Organosol consist of 21 species, the highest level of dominance type seedlings KelatMerah (Sizygium cuminii), Kelat Putih (Sizygium subglauca), Kopi-Kopi (Randiaanisophylla), the saplings of Tenggek Burung (Evodia aromatica), the pole of TenggekBurung (Evodia aromatica), The tree of Mahang (Macaranga hypoleuca). The highestspecies dominance values index (1) at the level of tree on the soil type of Organosol andLatosol, while the lowest (0.0426) at the level of sapling on the soil type of Latosol. Thehighest of diversity value index (3.4837) at the level of saplings on the soil type of Latosol,while the lowest (0.0000) at the level of trees on the soil type of Organosol and Latosol. Thehighest of Similarity index (23.33) at the similarity between Brown Forest Soil and Latosol atthe level of saplings, while the lowest of similarity index (0.00) at the similarity betweenLatosol and Brown Forest Soil at the level of tree, Organosol and Latosol at the level ofpoles and tree, Brown Forest Soil and Organosol at the level of seedling, pole and tree.
KONSENTRASI LOGAM BERAT (CD DAN PB) PADA SEDIMEN PERMUKAAN PERAIRAN TELUK BAYUR PROVINSI SUMATERA BARAT INDONESIA Nanci Aulia Safitri; Rifardi Rifardi; Rasoel Hamidy
Jurnal Ilmu Lingkungan Vol 3, No 2 (2009): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.3.2.p.85-94

Abstract

The purpose of this study is to clarify the ecosystem quality of Bayur Bay based on heavymetalic elements (Cd and Pb) behaviour in surface sediment. Sediment samples were collectedusing grab sampler from 4 stasions in Bayur Bay , West Sumatera Province, Indonesia in Marchto April 2009. Surface sediment samples were used for the mechanical analysis by the settling-tube method, and mean size diameter was calculated based on the proportion of grain-sizedistribution. Concentration of Cd and of Pb in the samples were determined using AutomicAbsorption Spectrofotimetry (ASS). One Way Analysis Variance (ANOVA) was carried to clarifythe relation between the concentration of Cd, Pb and mean size diameter of sediment. Generaltrend of Cd and Pb distribution strongly indicate that the ecosystem quality of Bayur Bay is insame level for all stations as shown by result of one way anova (Tcalculate < Ttabel). The studyarea is under influence of human activities supplied Cd and Pb to the surface sediment. Resultsof linier regression analysis show negative correlation between Cd concentration and mean sizediameter (Y = -0.031x + 1.262). Contrastingly, correlation between Pb concentration and meansize diameter shows positive value (Y = 0,098x - 0,10). Cd and Pb concentrations in surfacesediment of Bayur Bay are lower than the ERL (Effect Range Low: Cd = 1,2 ppm; Pb = 46,7ppm) and ERM (Effect Range Median: Cd = 9,6 ppm; Pb = 218 ppm) indicating the Bayur Bayecosystem is not yet polluted by the concentrations.
Pendugaan Kandungan Karbon pada Acacia crassicarpa di Hutan Rawa Gambut (Studi Kasus di IUPHHK-HT PT. RAPP, Kabupaten Pelalawan) Ambar Tri Ratna N; Rasoel Hamidy; Thamrin Thamrin
Jurnal Ilmu Lingkungan Vol 2, No 1 (2008): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.2.1.p.26-32

Abstract

The studies of Carbon contents prediction in Acacia crassicarpa arounds rawa gambut forest KabupatenPelalawan were conducted. The estimation is generally based on allometric aqualition relating either carbon atbreast height (DBH). Variation of carbon contents influenced by tree biomass and parts of tree. Procedure toestablish estimation model of carbon contents are determining of moisture content, estimating the potential ofbiomass and the carbon contents. The results suggesting that carbon contents of A. crassicarpa of 2 and 4 yearsold 30.53 ton/ha and 43.19 ton/ha, respectively. When the carbon stocks develop using the full range of treewas compared to actual of carbon contents trees differed by 18.85%. The carbon contents were range from23.82 to 33.11 % and 24.84 to 41.40% for 2 and 4 years old, respectively.
Sosialisasi pola hidup sehat di lingkungan nelayan di Desa Teluk Latak Kabupaten Bengkalis Rasoel Hamidy; Suyanto Suyanto; Rahmadi Rahmadi
CANANG: Jurnal Pengabdian Masyarakat Vol 2, No 1 (2022)
Publisher : PELANTAR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52364/canang.v2i1.22

Abstract

Indonesia is known as one of the maritime countries whose territory is mostly water area. Fishermen are the largest working group in Teluk Latak Village, Bengkalis District. Fishers’ work is full of challenges and health threats due to the uncertain working terrain and working time. counseling to fishing communities is carried out by implementing health education and promotion programs in a sustainable manner, especially in practicing a healthy lifestyle. This activity was carried out on May 7, 2018, in the village of Teluk Latak, Bengkalis Regency. This activity was attended by the village head, community leaders, fishermen, and doctors of the Bengkalis Health Center. In the service activity, counseling was presented about a healthy lifestyle for fishermen, introduction to several diseases such as Dengue Hemorrhagic Fever (DHF), Tuberculosis (TB) Infection, and Diabetes. This activity received a good response from the community and it can be seen from the reaction of the community very jointly in the implementation of this service activity.