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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management IQTISHODUNA Jurnal Penelitian Hutan dan Konservasi Alam Jurnal Penelitian Hasil Hutan Biodiversitas Journal of Biological Diversity
Elias .
Department Of Forest Management, Faculty Of Forestry And Environment, Institut Pertanian Bogor. Jl. Ulin, IPB University Campus, Dramaga, Bogor 16680, West Java, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Economics, Econometrics & Finance

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MODEL PENDUGA MASSA KARBON HUTAN RAWA GAMBUT MENGGUNAKAN CITRAALOS PALSAR Yuwono, Tomi; Jaya, I Nengah Surati; Elias, Elias
Jurnal Penelitian Hutan dan Konservasi Alam Vol 12, No 1 (2015): Jurnal Penelitian Hutan dan Konservasi Alam
Publisher : Pusat Penelitian dan Pengembangan Hutan

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Abstract

Hutan rawa gambut telah diakui sebagai ekosistem yang mampu menyimpan karbon hingga jumlah besar. Riset ini membahas pengembangan model estimasi massa karbon menggunakan data penginderaan jauh aktif. Tujuan penelitian ini adalah  mendapatkan informasi hasil untuk pengembangan  model estimasi volume massa karbon dengan menggunakan penginderaan jauh aktif, data ALOS PALSAR. Model dikembangkan atas dasar hubungan antara massa karbon rata-rata dan nilai backscatter ALOS PALSAR dari HH, HV dan band sintetik  HH/HV yang berasal dari berbagai ukuran pixel, yaitu : (a) 1 x 1 pixel, (b) 3 x 3 pixel dan (c) 5 x 5 pixel. Studi ini menemukan bahwa koefisien korelasi yang baik ditunjukkan antara nilai backscatter dan stok karbon. Penelitian ini juga menunjukkan bahwa korelasi terbaik diberikan oleh HV, korelasi tersebut lebih   baik   daripada   korelasi   yang   diperoleh   dengan   menggunakan   HH   dan   HH/HV.   Studi   ini mengidentifikasi model terbaik, yaitu ŷ = -5,337HV2– 111,8HV – 480,1;  R²=0,86 dan 3 x 3 pixel
ESTIMASI POTENSI BIOMASSA DAN MASSA KARBON HUTAN TANAMAN Acacia crassicarpa DI LAHAN GAMBUT (Studi Kasus di Areal HTI Kayu Serat di Pelalawan, Propinsi Riau) Yuniawati, Yuniawati; Budiaman, Ahmad; Elias, Elias
Jurnal Penelitian Hasil Hutan Vol 29, No 4 (2011): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3186.87 KB) | DOI: 10.20886/jphh.2011.29.4.343-355

Abstract

Peran hutan sebagai penyerap dan penyimpan karbon tidak diragukan lagi untuk mengurangi jumlah karbon di atmosfer bumi sehingga mencegah efek gas rumah kaca (GRK) yang dapat menyebabkan pemanasan global. Diantara berbagai jenis hutan, terdapat jenis hutan gambut yang berfungsi sebagai penyimpan karbon terbesar. Penelitian dilaksanakan di hutan tanaman kayu serat spesies Acacia crassicarpa yang tumbuh di lahan gambut, secara administratif di bawah perusahaan pulp dan kertas di Pelalawan, propinsi Riau. Penelitian ini bertujuan untuk memperoleh persamaan alomterik yang terkait parameter pertumbuhan pohon A. crassicarpa yaitu diameter pohon (D) dan tinggi baik sebagai total (Htot) atau cabang bebas (Hbc) untuk hasil pertumbuhan biomassa (W) dan massa karbon ( C). Metode penelitian ini dilaksanakan dengan menggunakan contoh dari pohon A. crassicarpa dengan umur berturut-turut 2,3,4 dan 5 tahun (antara lain batang utama, cabang, ranting, daun dan akar). Contoh tersebut dilakukan pengujian di laboratorium, dengan menguji kadar air, berat jenis, kadar abu, kadar zat terbang dan kadar karbon. Hasil persamaan alometrik yang diperoleh digunakan untuk mengukur dan memperkirakan potensi biomassa dan massa karbon dari tegakan pohon A. crassicarpa pada kelompok umur, yaitu 2,3,4 dan 5 tahun. Persamaan alometrik yang tepat dan paling mewakili adalah W = 0.398918D2,041Hbc0.165(untuk menghitung potensi biomassa) dan C = 0.131D1.246 Htot1.175(untuk menghitung potensi karbon). Penggunaan persamaan alometrik tersebut, akan menghasilkan potensi biomassa (W) A. crassicarpa untuk kelompok umur 2,3,4 dan 5 tahun berturut-turut yaitu 44,98 tons/ha, 70,35 tons/ha, 134,05 tons/ha dan 234,78 tons/ha. Sedangkan untuk nilai potensi massa karbon ( C ) sebesar 12,09 tons/ha, 36,23 tons/ ha, 76,09 tons/ha dan 133,10 tons/ha, masing-masing untuk kelompok umur pohon (2,3,4,5 tahun). Untuk menarik kesimpulan hasil penelitian ini bahwa pada berbagai umur tegakan pohon A. crassicarpa dan berbagai bagian pohon memberikan perbedaan nyata didalam biomassa dan massa karbon. Informasi penting ini patut mendapat perhatian secara menyeluruh untuk memperkirakan potensi biomassa dan massa karbon di pohon tertentu dengan tepat dan handal.
ANALISIS PENGARUH PUBLIC RELATION TERHADAP CUSTOMER LOYALTY YANG DIMODERASI OLEH BRAND IMAGE PADA SMARTPHONE ”X” Suhaily, Lily; Elias, Elias
IQTISHODUNA IQTISHODUNA (VOL 10, NO 2.
Publisher : Fakultas Ekonomi, UIN Maliki Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (252.619 KB) | DOI: 10.18860/iq.v10i2.3221

Abstract

Development of technology today is higly increased, especially communication tecnology. Basedon this fenomenon, many companies have opportunity to build-up smartphone. This conditions will increasedcompetition between the company. To win the competitions, company must promote their smartphone byusing public relation. According that conditions, this research evaluate the influence of public relation tocustomer loyalty which moderated by brand image. 160 questionnares were distributed to on 26 Mei 2014untill 1 July 2014by using random sampling.The result shows that public relation influences customer loyaltywhich moderated by brand image
Metode Estimasi Massa Karbon Pohon Jeunjing (Paraserianthes falcataria L Nielsen) di Hutan Rakyat (Method for Estimation of Tree Carbon Mass of Paraserianthes falcataria L Nielsen in Community Forest) Elias .; I Nyoman Jaya Wistara
Jurnal Manajemen Hutan Tropika Vol. 15 No. 2 (2009)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

The study was conducted at Jalagajaya Village, Jasinga Subdistrict, Bogor District, West Java, Indonesia. The objective of the study was to apply a methodology and method for tree carbon mass stock estimation in community forest based on a field survey of the forest and a model of tree carbon mass equation. The study revealed that there was a difference on carbon content in the parts of the tree biomass. Based on the analysis, model of tree carbon mass equation of Paraserianthes falcataria L Nielsen at Julagajaya Village was C = 0.7D1.48, with R² adj. = 95.7%. Results of the tree carbon mass estimation of the Paraserianthes falcataria L Nielsen based on the tree carbon mass-equation model were lower than the results estimated based on the tree biomass-equation model of Brown (1997), but higher than the results estimated based on the tree biomass-equation model of Ketterings et al. (2001). The study showed that the tree carbon stock of the community forest Paraserianthes falcataria L Nielsen at Julagajaya Village in 1,2,3,4,5, and 6 year age stand were 29.262, 33.555, 36.041, 39.163, 33.163, and 56.943 ton ha-1, respectively.Keywords: biomass-equation model, tree carbon mass-equation model, tree carbon stock, communityforest
Tangible economic value of non-timber forest products from peat swamp forest in Kampar, Indonesia Bintang Charles Hamonangan Simangunsong; Elisa Ganda Togu Manurung; Elias Elias; Manuntun Parulian Hutagaol; Jusupta Tarigan; Sigit Baktya Prabawa
Biodiversitas Journal of Biological Diversity Vol. 21 No. 12 (2020)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d211260

Abstract

Abstract. Simangunsong BCH, Manurung EGT, Elias, Hutagaol MP, Tarigan J, Prabawa SB. 2020. Tangible economic value of non-timber forest products from peat swamp forest in Kampar, Indonesia. Biodiversitas 21: 5954-5960. Development of alternative economy based on non-timber forest products usage is an important means to prevent forest conversion and preserve the quality of a forest ecosystem. The main objectives of this study were to identify and calculate the economic value from tangible/marketable perspective of the non-timber forest products (NTFPs) provided by peat swamp forest in Kampar, Sumatra, Indonesia. This is one of the largest remaining peat swamp forest ecosystems in the country. Seven villages located around that forest ecosystem with total forest cover area of 201,224 ha were chosen as samples. A conversion return approach was used to estimate the economic value of non-timber forest products. The results showed 18 kinds of non-timber forest products were identified, but only seven were used commercially by community. They are jungle rubber (Hevea brasiliensis), sago (Metroxylon sp.), swiftlet nest (Aerodramus fuciphagus), honey, betel nut (Areca catechu L), Agathis resin (Agathis dammara), and pandan (Pandanus amaryllifolius Roxb.) The obtained economic value of NTFPs was very low, which was about Rp 9,367.4 (or US$0.68 ha-1 yr-1). Market development of non-timber forest products is then crucial, and the government should play an important role in promoting it in collaboration with private companies. Non-marketed non-timber forest products and various environmental services should also be taken into account to measure that peat swamp forest ecosystem value. Otherwise, concerns about the sustainability of that forest ecosystem in Indonesia due to undervaluation of forest resources will continue.
Co-Authors Ahmad Budiaman Bintang C. H. Simangunsong Daniel Murdiyarso I Nengah Surati Jaya I Nyoman Jaya Wistara Juang Rata Matangaran Jusupta Tarigan Lily Suhaily Manuntun Parulian Hutagaol Manurung, Elisa Ganda Togu Muhdi Muhdi Sigit Baktya Prabawa Tomi Yuwono, Tomi Yuniawati Yuniawati