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Contribution of Hampangen Education Forest Central in Kalimantan to Climate Change Mitigation – An Above Ground Biomass Assessment

Afentina, Yanarita, Indrayanti Lies, Pidjath Chartina

Journal of Ecological Engineering

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2023

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Vol. 24, nr 1

97--106

EN

Hampangen Education Forest (HEF) has great potential in terms of carbon stock, biodiversity, and contribution to the local community’s livelihood. In the future, it is planned to develop its role in climate change mitigation; thus, valid and updated information regarding climate regulation services are required. The purpose of this study was to assess the above ground biomass (AGB) at different canopy densities of swamp secondary forest in (HEF) and estimated the total AGB stored in this area. The research was carried out from April 2022 until July 2022. The data collected included tree diameter at breast height (DBH), tree total height, the weight of litter, and understorey vegetation. All the information was collected using two types of observation plots (400 m2 and 0.25 m2) and AGB was calculated using allometric equations. This research found that the average AGB at sparse, medium, and dense canopy cover was 70.46 Mg.ha-1, 80.94 Mg.ha-1, and 145.03 Mg.ha-1, respectively. The total AGB stored in HEF was 367,180.08 Mg (tonnes) and equivalent to above-ground carbon stock of 172,574.64 Mg carbon. The finding of this research suggests that HEF needs conservation strategies to improve its carbon stock and conserve biodiversity.

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

Rotinsulu Johanna Maria, Afentina, Yanarita, Indrayanti Lies, Nursiah, Dewi Sevana

Journal of Ecological Engineering

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2022

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Vol. 23, nr 2

150--158

EN

Peatland rehabilitation is an urgent need in order to minimize the effects of peat degradation and to support climate change mitigation. However, the rehabilitation of degraded peatlands still faces many obstacles. This study aimed to study the agroforestry system on peatlands applied by traditional communities as an effort to discover a peatland rehabilitation strategy. This research was conducted in the Pilang, Tanjung Taruna, and Kalampangan villages from February to August 2019. The data in this study were obtained through field observations, interviews with the community, and Focus Group Discussion. The data was then synthesized using descriptive statistics. The results of data analysis showed that in the study area, six types of agroforestry systems were found. Communities develop different agroforestry systems at various types of peat depths. Farmers develop vegetable and fruit-based agroforestry on shallow peat, rubber-based agroforestry, annual crops and fruit on medium peat, fruit and rubber forestry plants on deep peat. Most farmers planted endemic species including Rubber (Havea braziliensis), Galam (Melaleuca leucadendra) and Gerunggang (Cratoxylum arborescens). The results of this study can be adopted as a peatland rehabilitation strategy since they are in accordance with the socio-culture of the local community and capable to accommodate economic and conservation interests.

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The Potential of Agroforestry in Supporting Food Security for Peatland Community – A Case Study in the Kalampangan Village, Central Kalimantan

Afentina, Yanarita, Indrayanti Lies, Rotinsulu Johanna Angga, Hidayat Nisfiatul, Sianipar Jenni

Journal of Ecological Engineering

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2021

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Vol. 22, nr 8

123--130

EN

Food security is one of the main problems under the pandemic and climate change condition that we currently face. Managing peatland to fulfill community needs faces several problems including peat fire, GHG emissions and loss of biodiversity. Agroforestry is one of land use systems on peatland that is capable of accommodating different interests while still concerning the conservation purposes. This study aimed to assess the potential of agroforestry for ensuring the food security of local communities. This research was carried out in the Kalampangan Village, Palangka Raya City central Kalimantan for six months. This study used both quantitative and qualitative approaches, including interviews and field observations. Interviews were carried out with 13 farmers in Kalampangan who applied an agroforestry system. The data gathered included all agroforestry components and number of the food production component. The data were analyzed using descriptive statistics. The results showed three agroforestry types were applied by the Village community Kalampangan, namely agrosilviculture, agrosilvopasture, and agrofisheries. The biodiversity of agroforestry in Kalapangan is relatively high, with a total of 58 different species identified. A total of 86% of all agroforestry components are sources of food, including fruits, vegetables, seeds, tubers, spices and livestock. The information above shows that the peatland agroforestry in the Kalampangan Village has the potential to support food security while maintaining the biodiversity. Thus, agroforestry can be recommended as a peatland land use and rehabilitation strategies to accommodate the basic needs of local communities and increasing their prosperity.

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Biodiversity of Soil Macrofauna in Jelutong (Dyera lowii Hook.F) based Agroforestry System on Peatlands

Yanarita, Indrayanti Lies, Johanna, Afentina

Journal of Ecological Engineering

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2021

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Vol. 22, nr 7

223--230

EN

Soil macrofauna can be an indicator of changes to the ecosystem. This study aimed to investigate the biodiversity of soil macrofauna in jelutong-based agroforestry on peatlands. Line transect sampling was used, eight transects and 32 plots were established. The sample was collected using the hand sorting technique. Species diversity and species evenness were determined using Shannon-Wiener index, while species richness with Margalef index. This study found 2179 individuals of soil macrofauna that belong to six classes, nine orders, and 13 families. The Formicidae 1 family dominated the area (951 individuals), while Lumbricidae had the least number (13 individuals). This study indicates that the species diversity of soil macrofauna in the jelutong-based agroforestry on peatlands is moderate (H’ = 1.508) with moderate species evenness (E = 0.588) and very high species richness (DMg = 281.788). It implies the capacity of the system in providing suitable habitat for macrofauna, and that it can be a potential alternative for ecological restoration in peatlands.

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Peat Swamp Forest; Management and Development of Indigenous Species to Support Economic Local People at Periphery Foret (Case Study in Central Borneo, Indonesia)

Indrayanti Lies, Rotinsulu Johanna Maria, Yanarita Yanarita, Sosilawaty Sosilawaty

Journal of Ecological Engineering

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2019

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Vol. 20, nr 4

76--83

EN

Jelutong Kapur and Sanaman are indigenous species at peat swamp forest. These plants have a great economic value. Besides the benefits from wood and sap, leaves can be used for medicinal purposes. The study aimed at obtaining the information related to the potential, distribution and increment diameter. This information was expected to be taken into consideration in the management and development of Jelutong. The study was conducted for 12 months in 12 observation plots, each plot measuring 100x100 m. The data were analyzed descriptively, while the growth patterns were shown graphically. The results showed that there were 100 Jelutong Kapur trees with a range 0–17 trees/plot, an average 8 trees/hectare. It was higher than Jelutong Sanaman, where there were 65 trees with a range of 0–13 trees/plot, an average 5 trees/hectare. However, jelutong Kapur had a diameter range 10.58–35.08 cm, the average increment diameter is 0.69 cm/year, the highest in the diameter class 10–15.9 cm and 22–26.9 cm which is 0.68 cm/year. It is lower than Jelutong Sanaman the diameter of which ranges within 12.61–37.13 cm, the average increment diameter is 0.77 cm/year, the highest increment in the class diameter of 10–15.9 cm is 0.85 cm/year. The highest and lowest number of trees is the same both in the diameter class 16–21.9 cm and 10–15.9 cm. The base area of Jelutong Kapur was 0.41789 m2/hectare, while in the case of Jelutong Sanaman it was 0.30422 m2/hectare. In both of them the 16–21.9 cm diameter class, is dominant, i.e. constitutes 40%. Both species may potentially support the economy for the local people, especially at forest periphery.