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All Journal Biotropika Jurnal Hutan Pulau-Pulau Kecil : Jurnal Ilmu-Ilmu Kehutanan dan Pertanian
Probo Santoso
Program Studi Pengelolaan Hutan, Departemen THV, Sekolah Vokasi, Universitas Gadjah Mada, Sekip Unit II, Yogyakarta, 55281; Telp (0274) 551752
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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Plants Potential of Green and Open Space Planning (RTH) to Mitigate CO2 Gas Emission in Ambon Frenly Marvi Selano; Ris Hadi Purwanto; Probo Santoso
Biotropika: Journal of Tropical Biology Vol. 9 No. 3 (2021)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.biotropika.2021.009.03.01

Abstract

The urbanization rate may give an adverse effect on a city. For example, it accrues the number of urban dwellers and induces the exploitation of land resources with a quick conversion rate, which leads to the degradation of the quality of the environment. This condition is exacerbated by deescalated green and open spaces (RTH) as a CO2 absorber. CO2 emissions in urban regions can be mitigated by exerting trees, which have a pivotal role in carbon uptake. This research imparts an analysis of plant species that are potential for absorbing carbon and storing biomass in green and open spaces in Ambon. The research method is quantitative by estimating biomass and carbon uptake of trees. Results indicate that trembesi (Samanea saman), linggua (Pterocarpus indicus), mahoni (Swietenia macrophylla), bintanggur (Calophyllum inophyllum), and kerai payung (Filicium decipiens) are typical trees planted in Ambon. The highest CO2 uptake capacity (B = 110.95 tons/ha, CO2 = 191.38 tons/ha) is identified in Trembesi (Samanea Saman), linggua (Pterocarpus indicus), the second-highest with a B = 61.66 tons/ha and CO2 = 106.36 tons/ha, and Akasia (Acacia mangium), the third-highest with a B = 25.24 tons/ha and CO2 = 41.69 tons/ha
TARIF VOLUME LOKAL POHON JATI (Tectona grandis) DI HUTAN KEMASYARAKATAN SEDYO RUKUN KABUPATEN GUNUNGKIDUL Dhea P Wijaya; Rochmad Hidayat; Probo Santoso
JURNAL HUTAN PULAU-PULAU KECIL Vol 5 No 1 (2021): JHPPK
Publisher : Program Studi Manajemen Hutan, Pascasarjana Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jhppk.v5i1.4007

Abstract

The activity of Teak (Tectona grandis) forest management on HKm in Gunungkidul is one of the wood production sources. However, the wood volume estimator for production planning is unavailable yet. Therefore, it is necessary to prepare a wood volume estimator to facilitate production planning. The goal of this research is to create a regression equation for the relationship between circumference and volume and compiling the local volume rate (TVL) of Teak trees (Tectona grandis) in the Sedyo Rukun Community Forest (Hkm) area, Banyusoco Village, Playen, Gunungkidul, Special Region of Yogyakarta. The sampling technique that used was purposive sampling with the sample was in the form of felled trees volume. The volume of the tree was calculated by using the smalian’s formula. TVL was arranged in some stages, data normality test, regression equation model, and validation test. The selection of the best model is considering into the criteria value of (coefficient of determination) R², (standard error of estimation) Se, F test, chi-square (x²), SA, SR, bias, and RMSE. Based on the research results, the best regression model is the power model with the formula V = with the value of R ² is 0.865; SE 0,390; SA -2.97; SR 0.16%; Bias 1.76%; RMSE 2.68% and chi-square 3,03.
Co-Authors Dhea P Wijaya Hidayat, Rochmad Ris Hadi Purwanto Selanno, Frenly M.