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All Journal MEDIA KONSERVASI Saintia Biologi
Jhon Marthali Simamora
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Education

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KEANEKARAGAMAN POHON DAN POLE SERTA POTENSI KARBON TERSIMPAN DI KAWASAN HUTAN SEKUNDER 30 TAHUN DAN PERKEBUNAN KOPI DI TELAGAH, LANGKAT Jhon Marthali Simamora; Retno Widhiastuti; Nursahara Pasaribu
Saintia Biologi Vol 1, No 2 (2013)
Publisher : Saintia Biologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (187.724 KB)

Abstract

The diversity of tree, pole and potential of carbon stored in 30 years secondary forest and coffee field at Telagah District of Langkat was investigated from February to June 2012. The  study site was determined by purposive sampling method with total area 40 x 200 meters. The study site is divided into 20 plots and sub plots. Result found that 15 families and 23 species for tree phase and 16 families and 26 species of pole phase. The area were dominated by Macaranga tanaria with important value 57.11% for tree, and followed by Ficus aurantiacea with important value 54. 472% for pole. The diversity index of tree is 2.650 and 2.715 for pole. Equitability index of tree is 0.520 and 0.586 for pole. The potential of carbon stored in tree is 146.519 ton/ha, 3.933 ton/ha for pole, and 0.0489 ton/ha for coffee plantation.   Keywords: Carbon, Coffee Plantation, Diversity, Important value index, pole, purposive sampling
The Effect of Biotic and Physical Environmental Factors on Total Individual of Rafflesia meijerii in Batang Gadis National Park Simamora, Jhon Marthali; Hikmat, Agus; Zuhud, Ervizal A. M.
Media Konservasi Vol. 22 No. 1 (2017): Media Konservasi Vol. 22 No. 1 April 2017
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (232.621 KB) | DOI: 10.29244/medkon.22.1.35-41

Abstract

Rafflesia meijerii was found in 2004 in Batang Gadis National Park. It was a new species of the genus Rafflesia and endemic in North Sumatra. The purpose of this study was to analyze the biotic and physical environmental factors that affect the habitat quality and the individual numbers of of R. meijerii at the research sites. Data were collected by purposive sampling method with a plot size of 0,1 hectare. The collected data such as: total of R. meijerii, total and species of vegetation, and physical environment factors. Fourty three R. meijerii was found at the sites. Fourty three individuals of R. meijerii were found in February 2016. Quercus gameliflora was dominant in tree and sapling with IVI 33,72% and 55,83% and Selaginella wildenovii was dominant in seedling and ground cover species. Sixty three individuals of Tetrastigma papillosum were found. The results of the ecological factor analysis showed that each of ecological factors did not significantly affect the numbers of R. meijerii (sig. 0,1009> 0,05).  Keywords: affect, analyze, conservation, endemic, meijerii
Co-Authors Agus Hikmat Nursahara Pasaribu Retno Widhiastuti Zuhud, Ervizal A. M.