Jurnal Warta Rimba
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PENGARUH BERBAGAI DOSIS KOMPOS KOTORAN AYAM TERHADAP PERTUMBUHAN SEMAI CEMPAKA (Magnolia champaca L)
Full text linkThis study aims to determine the effect of the dose of chicken manure compost on the growth of cempaka seedlings (Magnolia champaca L). The research was conducted for 3 months, from December to March 2022, which is located in the BPDAS-HL Palu-Poso Permanent Nursery area, Tadulako University, Palu. This study used a completely randomized design (CRD), which consisted of 5 treatments, namely, P0 = topsoil soil without compost 1000g, P1 = topsoil 1000g + chicken manure compost 50g, P2 = topsoil soil 1000g + chicken manure compost 150g, P3 = soil topsoil 1000g + 250g chicken manure compost, P4 = 1000g topsoil + 350g chicken manure compost. Each treatment was repeated 8 times, so that in total there were 40 experimental units. Parameters observed were increase in height, stem diameter, number of leaves, and seedling sturdiness. The results of the further test of the smallest significant difference (BNT) of 5% were carried out if the results of the analysis of variance showed that the comparison of soil and chicken manure compost treatment had a significant effect. The results of analysis of variance showed that the application of various doses of chicken manure compost had a significant effect on the growth of height, diameter and number of leaves of cempaka seedlings. The best growth of cempaka seedlings was obtained in treatment P1= (topsoil 1000g + chicken manure compost 50g), the growth parameters were height 5.27 (cm), diameter (1.28 mm), and number of leaves 5.25 (strands)
ANALISIS FITOKIMIA EKSTRAK DAUN DAN BATANG GAHARU (Aquilaria malaccensis Lamk) DARI DESA TARANGGI KABUPATEN PASANGKAYU PROVINSI SULAWESI BARAT
Full text linkPlants with the scientific name Aquilaria malaccensis Lamk or commonly referred to as Agarwood is a type of sapwood-producing plant with a fragrant aroma. This sapwood product which contains mastic makes Gaharu one of the non-timber forest products that have a fairly expensive economic value when compared to other non-timber forest products. Gaharu can be found in Sulawesi, precisely in Taranggi Village, Pasangkayu Regency, West Sulawesi Province. This research was conducted from January to March 2022 at the Chemistry Laboratory, Faculty of Mathematics and Natural Sciences, Tadulako University. This research method is divided into several stages, namely: Making Powder of Agarwood Leaves and Stems, Extraction of Agarwood Leaves and Stems, Phytochemical Test of Gaharu Leaves and Stems such as flavonoid test, alkaloid test, saponin test, tannin test, terpenoid test, steroid test, carotenoid test, calculation of water content. The results of the calculation of the water content of agarwood leaves are 3.9%, agarwood stems 2.6%. Analysis of the phytochemical tests contained in gaharu leaf extract using 96% ethanol as solvent was positive for tannins and terpenoids while for nhexane solvent was positive for steroids and carotenoids. In agarwood stems, positive ethanol solvents contain tannins and terpenoids, while positive n-hexane solvents contain steroids and carotenoids
KONDISI VEGETASI MANGROVE PULAU PADA LAGUNA TASILAHA DESA TOLONGANO KECAMATAN BANAWA SELATAN KABUPATEN DONGGALA
No full textThe mangrove forest is one form of forest ecosystems which are unique and distinctive, located in tidal zones in coastal areas, beaches, and small that has natural resources potential. This ecosystem has various ecological and economic functions for humans and other organisms directly or indirectly. Mangrove ecosystem changes can be seen from land conversion (mangrove) into a pond, residential, industrial, and logging by the community for various purposes. Mangrove forest ecosystem has a very important function ecologically and economically, both for local, regional, national or global. This study aims to determine the condition of vegetation Mangrove Island At Laguna Tasilaha, Tolongano Village of South Banawa Donggala District. The method used a combination of the terraced path, tree level observations is conducted by the path, while the observation of seedlings and saplings done by way of terraced lines. Based on field observations mangrove forest vegetation on the islands of the lagoon tasilaha is done by taking a two-way lane, i.e. the direction of the horizontal path made by 37 plot observations, and Line vertical direction was made by 15 plot observations. This location is located in the Tolongano village of South Banawa District of Donggala, during the three months from September to November 2014. Quantitative result analysis for the tree level based on the index value shows that the highest tree is occupied by Rhizophora apiculata with 105.53%, then followed by Rhizophora mucronata, with 101.42%, and ends with Brugueira gymnorrhiza 93.02%. Besides, in the pacang level, the highest level occupied by Brugueira gymnorrhiza type with 104.46%, then followed by Rhizophora apiculata with 101.02%, and ended by Rhizophora mucronata with 94.49%. Furthermore, the highest level in the seedling stage occupied by Rhizophora apiculata with 122.4%, then followed by Rhizophora mucronata by 994.18%, and ends with Brugueira gymnorrhiza 83.39%
POPULASI MIKROBA TANAH PADA LAHAN AGROFORESTRI DAN MONOKULTUR KAKAO DI CAGAR ALAM PANGI BINANGGA KABUPATEN PARIGI MOUTONG
Full text linkThe biological quality of the soil increases with the presence of soil microorganisms. The microorganism of the organic material remodeling consists of fungi and bacteria. Microorganisms that overhaul organic matter in aerobic conditions are fungi, whereas in anaerobic conditions most of the decomposers of organic matter are bacteria. This study aims to determine the microbial population on agroforestry and cocoa monocultures land in the Pangi Binaggga Nature Reserve, Parigi Moutong district, Central Sulawesi. This research was conducted in January to March 2019. The collection of the soil samples were done in thre locations based on the slope (top, back and valley) on the depth of 0-10 cm. The results showed that the population of soil fungi and bacteria differed between agroforestry and cacao monoculture land. The highest population of soil fungi was found in agroforesri land (31.7 x 105 CFU g-1), while the fungus population was lowest in cocoa monoculture land (31.4 x 105 CFU g-1). The bacterial population was highest in the cocoa monoculture field (78.2 x 107 CFU g-1), while the bacterial popolation was lowest in agroforestry fields (65.7 x 107 CFU g1)
ANALISIS PERUBAHAN TUTUPAN LAHAN KAWASAN HUTAN MENGGUNAKAN CITRA LANDSAT 8 DI KECAMATAN PETASIA KABUPATEN MOROWALI UTARA SULAWESI TENGAH
Full text linkAt present the population growth is increasing which causes many people to encroach on the forest area to make ends meet. Various activities of land conversion have been carried out by the community, including the conversion of land into agricultural land, settlements, plantations, infrastructure and land conversion for mining, which has reduced the area of forest land.Based on this, this study has been conducted to know where the land cover changes, the type of land cover on the Forest Area in North Morowali County Petasia Subdistrict in the last 5-year period of the 2013 and 2018 priodes will be implemented for 2 months that is in April until May 2019. This study used a guided classification method that is classification that uses the pre-defined example regions. Based on the results of the 2013 and 2018 landsat 8 image analysis, the data on the changes in extents in each land cover class that is, primary dry land forests have decreased by an area of 2,109.40 ha, secondary dry land forests experienced an increase in area of 511.04 ha, mining experienced an increase in area of 280.64 ha, open land experienced an increase in area of 681, 82 ha, dry land mixed agriculture experienced an increase in area of 332.02 ha ha, the settlement experienced a 67.99 ha wide decline, the body of water experienced an increase in an area of 400.01 ha, the swamp saw a decrease in an area of 436.16 h
PEMETAAN TINGKAT BAHAYA EROSI MENGGUNAKAN SISTEM INFORMASI GEOGRAFIS DI DAS BAMBAPUN KECAMATAN DONDO KABUPATEN TOLI-TOLI
Full text linkA watershed is an area bounded by topography and a complex ecosystem unit starts from upstream, middle and downstream or capable of receiving, storing and draining rainwater to the main river.The current condition of the Bambapun watershed needs attention because there have been several phenomena that are detrimental to the community, such as erosion, landslides and floods when rainfall increases.Erosion rate research in the Bambapun watershed was carried out for 3 months, from February to April 2020 using the USLE method and the Geographic Information System, namely Overlay from several data (the determining parameters of erosion)to determine the level of erosion hazard in the Bambapun watershed.Based on the results of the analysis using the Geographic Information System and the USLE method, it is known that the amount of soil eroded in the Bambapun watershed is 6,894.34 tons/ha/year divided into five classes of erosion hazard levels, namely class I erosion rate 480 tons/ha/year with an area of 55.87 Ha.Keyword: DAS, Erosion, SIG, USL
PEMANFAATAN ROTAN (Calamus Sp) OLEH MASYARAKAT DI DESA BANGGA KECAMATAN DOLO SELATAN KABUPATEN SIGI
Full text linkThe use of non-timber forest products in Indonesia has long been carried out by residents around the forest to meet their daily needs. The collection and exploitation of non-timber forest products has a significant role in reducing high unemployment and as a source of livelihood. One of the non-timber forest products known by the community around the forest is rattan. This study aims to determine the types and uses of rattan in the village of Bangga, South Dolo District, Sigi Regency. The usefulness of this research can provide benefits both for the researchers themselves and for the people who live around the forest in the form of using rattan by the people of Proud Village, South Dolo District, Sigi Regency. This research was conducted in Bangga Village, South Dolo District, Sigi Regency from February to April 2020. The types of data used in this study were primary data and secondary data. The results showed that the types of rattan plants used by the people of Proud Village found 4 types of rattan plants. Namely rattan rods, rattan tohiti, symbols, rattan ronti. Villagers are proud to use rattan plants, which are very diverse, which are used as household equipment such as roofs, table chairs, baskets.Keywords : Pemanfaatan Rotan (Calamus Sp) Oleh Masyarakat Di Desa Bangga Kecamatan Dolo Selatan Kabupaten Sig
POTENSI WISATA ALAM KAWASAN HUTAN PINUS DI DESA WATUTAU KECAMATAN LORE PEORE KABUPATEN POSO
Full text linkNatural tourism pine forest area in Watutau Village Lore Peore District Poso is a natural tourism area oriented to recreational facilities as well as education introduction of pine forests in order to love nature and the environment. The purpose of this research is to determine the feasibility of natural tourism potential of pine forest areas in Watutau Village, Lore Peore District, Poso Regency, while the usefulness of this research is expected to provide an overview and information to the management (Watutau Village government). This research was conducted for two months from March to April 2021, located in Watutau Village, Lore Peore District, Poso Regency, Central Sulawesi Province. The method used is qualitative descriptive through observation and interview. Observation is to make direct observations to the object of research and interviews conducted to the public and visitors using interview guides provided earlier. The number of respondents based on statistics as many as 30 people (Cohen, et.al, 2007 in Lestari, RA, 2014), while the results of the study obtained are attractiveness 75%, accessibility 70.83%, accommodation 58.33%, facilities and infrastructure 75%. The results of calculations with the analysis of ADO-ODTWA on the Natural Tourism Potential of Pine Forest Area in Watutau Village lore peore district poso obtained an average value of 69.79% and is included in tourist attractions that are worthy to be developed.Keywords : Pine Forest Area, Attraction, Natural Touris
PENGARUH PERLAKUAN PANAS OIL HEAT TREATMENT TERHADAP PERUBAHAN WARNA KAYU JABON (Anthocephalus cadamba)
Full text linkJabon (Anthocephalus cadamba) merupakan kayu cepat tumbuh dan memiliki berat jenis dan stabilitas dimensi yang rendah sehingga perlu dilakukan modifikasi pada kayu. Modifikasi panas bertujuan untuk memperbaiki warna, stabilitas dimensi, dan keawetan. Penelitian ini bertujuan untuk mengetahui perubahan warna pada kayu jabon setelah modifikasi panas dengan oil heat treatment (OHT) pada suhu 170°C, 190°C dan 210°C selama 4 jam. Parameter warna diukur menggunakan Colorimeter yang menerapkan sistem warna CIE-Lab*. Parameter warna yang diukur meliputi kecerahan (L*), kromatisitas merah/hijau (a*), kromatisitas kuning/biru (b*), dan perubahan warna keseluruhan (∆E*). Hasil penelitian menunjukkan bahwa nilai L* kayu mengalami penurunan kecerahan. Akibatnya, terlihat bahwa warna kayu jabon yang diberi perlakuan panas minyak menjadi lebih gelap dengan meningkatnya suhu perlakuan. Nilai a* menunjukan kenaikan pada suhu 190°C dan menurun pada suhu 210°C, sedangkan nilai b* menunjukan penurunan pada suhu 190°C dan 210°C. ∆AE* pada suhu 170°C, 190°C dan 210°C menunjukan nilai > 12 yang berarti warna berubah total. Perlakuan panas dapat membuat warna kayu jabon menjadi lebih gelap menyerupai warna jenis kayu eksotis eboni sehingga meingkatkan nilai tambah produk
ESTIMASI BIOMASSA DAN KARBON DI ATAS PERMUKAAN TANAH PADA TEGAKAN MANGROVE DESA SARI BHUANA KECAMATAN TOILI KABUPATEN BANGGAI
Full text linkPemanasan global adalah meningkatnya gas rumah kaca secara berlebihan di atmosfer. Salah satu yang berkontribusi besar terhadap efek rumah kaca yaitu karbondioksida. Sektor kehutanan sangat diperlukan untuk pengurangan emisi CO2 melalui berbagai vegetasi hutan yaitu dengan keberadaan mangrove. Desa Sari Bhuana memiliki sungai besar yang merupakan habitat ekosistem mangrove. Informasi nilai biomassa dan karbon mangrove belum banyak dilakukan penelitian khususnya di desa ini. Hal ini lah yang menjadi latar belakang Penelitian tentang estimasi biomassa dan karbon bagian atas permukaan tanah pada tegakan mangrove perlu dilakukan. Penentuan plot menggunakan metode purposive sampling yang terbagi dalam 3 area yaitu terendam (muka laut), peralihan dan daratan (jauh dari laut). Setiap area terdiri dari 2 plot yang berukuran 10x10 m. Pengambilan data dengan metode non-destruktif untuk mengukur diameter batang pohon setinggi dada. Dilakukan analisis data untuk menggambarkan kondisi ekosistem mangrove berupa nilai kerapatan, frekuensi dan penutupan jenis serta indeks nilai penting. Persamaan allometrik dipakai setelah dilakukan pengambilan data untuk mendapatkan nilai biomassa dan karbon dari tiap-tiap jenis. Penelitian ini menemukan beberapa jenis mangrove yaitu Rhizopora apiculata, Rhizopora mucronata, Rhizopora stylosa, Xylocarpus granatum, Sonnearatia alba, Bruguiera gymnorhiza, dan Avicenna marina. Rhizopora apiculata memiliki biomassa dan stok karbon tertinggi masing-masing sebesar 81,25469 kg/m2 dan 38,1897 ton/ha. simpanan karbon total tegakan mangrove sebesar 48,79 ton/ha