scholarly journals Finding Strategies for Peatland Rehabilitation; Agroforestry Systems on Various Types of Peat Depth in Three Villages in Central Kalimantan

2022 ◽  
Vol 23 (2) ◽  
pp. 150-158
Author(s):  
Johanna Rotinsulu ◽  
Afentina Afentina ◽  
Yanarita Yanarita ◽  
Lies Indrayanti ◽  
Nursiah Nursiah ◽  
...  
Keyword(s):  
Agroforestry Systems ◽  
Central Kalimantan

scholarly journals Socio-economic Study of Conservation and Rehabilitation of Tropical Peatland With Agroforestry Systems in Central Kalimantan, Indonesia

2021 ◽  
Author(s):  
Andrie Elia ◽  
Adi Jaya ◽  
Emmy Uthanya Antang ◽  
Merrisa Octora ◽  
Kusnida Indrajaya ◽  
...  
Keyword(s):  
Management Practices ◽  
Agroforestry Systems ◽  
Government Support ◽  
Tree Planting ◽  
Intensive Management ◽  
Market Demand ◽  
Central Kalimantan ◽  
Tropical Peatland ◽  
Study Results ◽  
Tropical Peatlands

Abstract Current studies on tropical peatlands in Indonesia are mostly focused on the impacts of management practices on the environment. Studies on efforts to conserve and rehabilitate the degradation of tropical peatland involving farmers through agroforestry systems have been limited. By employing the qualitative survey with semi-structured interviews and field observations to agroforestry locations in two villages of Tumbang Nusa and Kalampangan, Central Kalimantan, Indonesia aims to fill those research gaps. The results showed that the main motivation of farmers in starting agroforestry activities was the understanding that there would be limited trees in the future, and planting trees with a combination of intercrops provided adequate income. Agroforestry farmers who devote considerable time to agroforestry can meet the family's economic needs. Although further guidance is not typically provided, government intervention through tree planting programs also stimulates agroforestry activities. Intensive management of intercrops in various types can provide a good income. For intensive intercropping options, farmers follow market demand, while less intensive farmers prefer plants that do not require intensive management. Trees planted in agroforestry systems are only given fertilizer at the initial planting stage. Some farms receive fertilizer subsidies from government support programmes, but fertilizers are obtained from intercropping at the following stage. The study results imply that the community needs to get knowledge and training on agroforestry, which can be a way of conserving and rehabilitating tropical peatlands and a source of income.

Studi Awal Geologi di Daerah Beruang Kanan Kabupaten Gunung Mas Propinsi Kalimantan Tengah

PROMINE ◽  
2018 ◽  
Vol 6 (1) ◽  
pp. 1-11
Author(s):  
Retno Anjarwati ◽  
Arifudin Idrus ◽  
Lucas Donny Setijadji
Keyword(s):  
Gold Mineralization ◽  
Volcanic Rocks ◽  
Gold Deposits ◽  
Central Kalimantan ◽  
Magmatic Arc ◽  
Tertiary Sediment ◽  
Copper Gold ◽  
Regional Tectonic ◽  
Mineralization Processes ◽  
High Yields

The regional tectonic conditions of the KSK Contract of Work are located in the mid-Tertiary magmatic arc (Carlile and Mitchell, 1994) which host a number of epithermal gold deposits (eg, Kelian, Indon, Muro) and significant prospects such as Muyup, Masupa Ria, Gunung Mas and Mirah. Copper-gold mineralization in the KSK Contract of Work is associated with a number of intrusions that have occupied the shallow-scale crust at the Mesozoic metamorphic intercellular junction to the south and continuously into the Lower Tertiary sediment toward the water. This intrusion is interpreted to be part of the Oligocene arc of Central Kalimantan (in Carlile and Mitchell 1994) Volcanic rocks and associated volcanoes are older than intrusions, possibly aged Cretaceous and exposed together with all three contacts (Carlile and Mitchell, 1994) some researchers contribute details about the geological and mineralogical background, and some papers for that are published for the Beruang Kanan region and beyond but no one can confirm the genesis type of the Beruang Kanan region The mineralization of the Beruang Kanan area is generally composed by high yields of epithermal sulphide mineralization. with Cu-Au mineralization This high epithermal sulphide deposition coats the upper part of the Cu-Au porphyry precipitate associated with mineralization processes that are generally controlled by the structure

PENGAWETAN ROTAN KURANG DIKENAL SEBAGAI BAHAN BAKU MEBEL MENGGUNAKAN RENDAMAN DINGIN

2012 ◽  
Vol 4 (2) ◽  
pp. 11
Author(s):  
Saibatul Hamdi
Keyword(s):  
Boric Acid ◽  
Central Kalimantan

This research used the lesser known species as much 5 types rattan, consisted of i.e marau (Calamus Mettanensis Becc), toho (Calamus Spp), galang (Daemonorops Verticilaris Griff Mart), hijau (Calamus Spp) and simpurut (Calamus Panajuga Becc) from Central Kalimantan. Preservative used the mixture of boric acid with the borax and copper-8 by  the concentration of 1,0 %, 2,0 % and 3,0 %. Soaked time during 2 day, 4 day and 6 day by immersion chilled. Result of research indicated that the retention value varied, the greater of concentration condensation and soaking period, the greater average the value of retention while penetration result at all of treatment showed the value 100 %.Keywords:  rattan, preservation, retention, penetration, cold soaking.

Characterization of Amethysts from Sukamara, Central Kalimantan, Using Laser-Induced Breakdown Spectroscopy (LIBS)

2020 ◽  
Vol 1 (2) ◽  
pp. 5-8
Author(s):  
Komang Gde Suastika, Heri Suyanto, Gunarjo, Sadiana, Darmaji
Keyword(s):  
Emission Intensity ◽  
Laser Energy ◽  
Emission Spectra ◽  
Atomic Emission ◽  
Laser Induced Breakdown Spectroscopy ◽  
Chemical Formula ◽  
Central Kalimantan ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

Abstract - Laser-Induced Breakdown Spectroscopy (LIBS) is one method of atomic emission spectroscopy using laser ablation as an energy source. This method is used to characterize the type of amethysts that originally come from Sukamara, Central Kalimantan. The result of amethyst characterization can be used as a reference for claiming the natural wealth of the amethyst. The amethyst samples are directly taken from the amethyst mining field in the District Gem Amethyst and consist of four color variations: white, black, yellow, and purple. These samples were analyzed by LIBS, using laser energy of 120 mJ, delay time detection of 2 μs and accumulation of 3, with and without cleaning. The purpose of this study is to determine emission spectra characteristics, contained elements, and physical characteristics of each amethyst sample. The spectra show that the amethyst samples contain some elements such as Al, Ca, K, Fe, Gd, Ba, Si, Be, H, O, N, Cl and Pu with various emission intensities. The value of emission intensity corresponds to concentration of element in the sample. Hence, the characteristics of the amethysts are based on their concentration value. The element with the highest concentration in all samples is Si, which is related to the chemical formula of SiO2. The element with the lowest concentration in all samples is Ca that is found in black and yellow amethysts. The emission intensity of Fe element can distinguish between white, purple, and yellow amethyst. If Fe emission intensity is very low, it indicates yellow sample. Thus, we may conclude that LIBS is a method that can be used to characterize the amethyst samples.Key words: amethyst, impurity, laser-induced, breakdown spectroscopy, characteristic, gemstones

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