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All Journal MEDIA KONSERVASI Warta Rimba Journal of Degraded and Mining Lands Management Planta Tropika Journal of Tropical Biodiversity and Biotechnology Jurnal Biodjati Jurnal Penelitian Kehutanan Bonita Agro Bali: Agricultural Journal Jurnal Abdi Insani Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Indonesian Journal of Applied Research (IJAR) Jurnal Ilmu Kehutanan Jurnal Pengabdian Pada Masyarakat
Witno Witno
Fakultas Kehutanan Universitas Andi Djemma Palopo
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Journal : MEDIA KONSERVASI

 1 
Biomass Estimation Model in Revegetation Area of Nickel Post-Mining Witno Witno; Nining Puspaningsih; Budi Kuncahyo
Media Konservasi Vol 23 No 3 (2018): Media Konservasi Vol. 23 No. 3 Desember 2018
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (479.814 KB) | DOI: 10.29244/medkon.23.3.293-302

Abstract

Deforestation and forest degradation are one of the most crucial issues in the forestry sector. The impact of deforestation and forest degradation due to the opening of forest areas for mining activities that causes damage to sustainable forest ecology. This condition requires companies as miners to carry out revegetation activities in post-mining areas to restore forest existence. PT. Vale of Indonesia (PTVI) is a nickel mining company located in Sorowako, South Sulawesi Province, which has carried out revegetation activities and is considered quite successful. This assessment has not included biomass as an indicator of forest productivity. Biomass is one of the determinants of forest productivity in post-mining areas needs to be further investigated to maximized revegation management. The objective of this study was to measure and construct a model for estimating biomass in the revegetation of the post-mining area in PTVI. The results of this study obtained a regression model of the rank as a biomass estimator in the revegetation of the post-mining area in PTVI. The form of the selected model equation is Y= 2,59505E-13 X1 2,489  X2 3,645. The independent variable is X1 = DVI (vegetation index) and X2 = C% (percentage of canopy). The regression model chosen has a determination coefficient of 70,60% and a standard deviation of -0,33528. Keywords: biomass, post-mining, regression model, revegetation 
The Regeneration Potential of Kasa (Castanopsis acuminatissima Blume) in Kalaena Nature Reserve, East Luwu Regency witno, Witno; Azis Karim, Hadijah; Praboowo, Arbin; Batari Putri, Andi Utami
Media Konservasi Vol. 29 No. 4 (2024): Media Konservasi Vol 29 No 4 September 2024
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/medkon.29.4.557

Abstract

Kasa is one of the important species among 120 species in the genus Castanopsis (Fagaceae), which thrives in secondary and primary lowland forest areas up to 1000 m above sea level. This plant species exhibits tolerance to full sunlight. The objective of this study is to assess the regeneration potential of Kasa (Castanopsis acuminatissima Blume) in the Kalaena Nature Reserve, Indonesia. The research plots consisted of two 50 m x 50 m plots, with a nested 10 m x 10 m subplot placed using purposive sampling. The findings regarding the regeneration potential of Kasa in the Kalaena Nature Reserve revealed varying numbers of seedlings, saplings, poles, and trees. The regeneration potential of Kasa is influenced by the growth stages of seedlings and trees. During the seedling phase, the regeneration potential of Kasa is classified as very good. However, the density of trees, although in the productive category, is low due to environmental factors and the characteristics of the parent tree. Conversely, the sapling and pole phases exhibit very poor regeneration potential. In plot 1, there were 1964 individual seedlings, 6 individual saplings, 4 individual poles, and 21 individual trees. Meanwhile, plot 2 recorded 844 individual seedlings, 5 individual saplings, 1 individual pole, and 18 individual trees. The growth of Kasa in both plots displayed a clustered pattern.
Diversity of Insect Species in PT Sumber Graha Sejahtera of Production Forest in West Wara District, Luwu Regency Batari Putri, Andi Utami; Witno; Liana; Rian Badjang; Novi Herman Sada; Maria
Media Konservasi Vol. 30 No. 1 (2025): Media Konservasi Vol 30 No 1 January 2025
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/medkon.30.1.119

Abstract

Insects are the most numerous groups of organisms in the phylum of Arthropods and have a very important role in the continuity of ecological functions. This study aims to determine the diversity of nocturnal and diurnal insect species in PT. Sumber Graha Sejahtera of production forest area in West Wara District. This study used 2 methods are plot and line transect. The traps used are Light traps for nocturnal insects used on 5 plot and Sweep Net for diurnal insects used on 3 line transect. The results showed that there were 36 species of insects consisting of 14 nocturnal species and 22 diurnal species. The diversity index of nocturnal insects were included in the medium category (2.57) with the highest population density found in the species Aedes albopictus which is 0.0160, while the diversity index of diurnal insects were included in the high category (3.02) with the highest population density found in the species Valanga nigricornis which is 0.0056.
Co-Authors Abdul Rahim Abdul Rahim Akhbar Akhbar Andang Suryana Soma Angger Angger Angger, Angger Anggra Alfian Arinal Haq Asri Subkhan Mahulette Asriyanni Asriyanni Azis Karim, Hadijah B.P, Andi Utami Baso, Harfika Sari Budi Kuncahyo Budi Kuncahyo Defara, Desya Dewi Marwati Nuryanti, Dewi Marwati Dicky Supandi Eko Rifaldo Faqi, Muh Forestri Cimbrins Hadijah Aziz Karim Heder Djamaludin Hilarius Kamis Hurria Hurria Ida Arianingsih Ikmal Ikmal Karim, Hadijah Azis Liana Liana Baharuddin Liana Liana Liana Liana Liana Liana Liana Liana Maria Maria Maria Maria Maria Maria Maria Megawati Megawati Muhammad Fajri Ramadhan Muslim Saleh Murni Mursyid Najib, Nardy Noerman Nardy Noerman Najib Nardy Noerman Najib Nining Puspaningsih Novi Herman Sada Nur Hidayanti Pitra, Pitra Praboowo, Arbin Putri, Andi Utami Batari Rian Badjang Sada, Novi Herman Srida Mitra Ayu Sugeng Prijono Uci Angraini Wahid Wahid Wardi Wardi Wiwi Pradini Yumna Yumna Yumna Yumna Yumna, Yumna