bluuebunny/crossref_metadata_2025_split huggingface dataset:
The role of mycoSilvi and silvicultural treatment towards the growth of Albizia chinensis in post-mining area
Authors: Sahara N , Budi S W , Wibowo C 
Published: January 2022

Abstract
Open-pit mining causes decreased soil quality, low land carrying capacity, and reduced soil fertility, chemical properties, and soil texture. This study aimed to identify the chemical properties of the soil and analyze the growth response of Albizia chinensis against the most optimal combination of MycoSilvi and silvicultural treatment. In this study, a randomized block design consisting of two factors, namely MycoSilvi and silviculture was applied. Each treatment was repeated five times. The results showed that the interaction of Mycosilvi and post-planting soil tillage treatment (M1D1P0) and the interaction of MycoSilvi, post-planting soil tillage, and compost fertilizer (M1D1P1) obtained the best results in terms of height and diameter, with a significant increase of 83.16% and 115.94% compared to control plants, respectively. In addition, the combination of Mycosilvi and silvicultural treatment exhibited the highest mean number of spores. In general, AMF denoted a favorable percentage of root colonization with an average of 30.62-46.96%. Furthermore, pH in the combination of post-planting soil tillage and compost fertilizer (C0D1P1) 3.66 was higher than in the control (C0D0P0) 3.10 and the P-available soil in the combination of MycoSilvi, post-planting soil tillage, and compost fertilizer (M1D1P1) was greater 45.3 ppm than control on post-silica sand mining land.
Ex-situ conservation and diversity index of greened ex-tin mine
Authors: Ang L H , Ho W M , Tang L K 
Published: January 2022

Abstract
The greened ex-tin mine comprises planted timber species of Acacia mangium, Hopea odorata and Khaya ivorensis. The ex-tin mine was formerly a lowland dipterocarps mixed forest. The man-made forest was established at 4 x 5 m spacing or 500 stem/ha on slime tailings. However, high mortality of the timber species due to damages by wild pigs and farm animals have reduced the plantation of 3.2 ha to only 93 stems of Acacia mangium, 92 stems of Hopea odorata and 130 stems of Khaya ivorensis at 20 years after planting. The regeneration covering the planting line was kept and the planting spaces in-between the planting lines were cleared for planting of another 14 species of endemic, endangered and threatened tree species (EETS). The ex-situ conservation program of planting 1500 stems of EETS to the 3 ha site was sponsored by Asian Forest Cooperation Organization (AFoCO). The 100% vegetation survey was carried out 4 years after planting. The species richness, Shannon diversity index and species evenness were computed for the nurse stand, and the nurse stands with EETS. The results obtained for species richness, Shannon Index (H) and Shannon Evenness index (EH) of the nurse stand and nurse stand with EETS was 24, 1.46, 0.46 and 38, 2.30, 0.63, respectively. The nurse stand with EETS has increased in species richness, H and EH of nurse stand to 58%. and 36.9%, respectively. More importantly, none of the introduced EETS was found in the composition of the natural regeneration of the 20 years old nurse stand. The 21 species naturally regenerated in the nurse stand were an only pioneer and late pioneer species. This shows that ex-tin mine after the reclamation efforts of planting timber species and the natural regeneration will not be able to regain the initial species composition of a lowland dipterocarps forest. The domestication technology of EETS developed in this project is reproducible. The project has successfully preserved the 14 EETS and the site shall be a demonstration plot for the future seed production area.
In situ conservation efforts of kilemo (Litsea cubeba L. Persoon) in Dieng Plateau
Authors: Heryati Y , Agustarini R , Karlina E 
Published: January 2022

Abstract
Kilemo (Litsea cubeba L. Persoon) is an endemic species in Indonesia, spread in the mountains of Java, Sumatra and Kalimantan. This species is classified as a Non Timber Forest Product because it produces essential oils from several parts of the tree, such as leaves, fruits, flowers and bark. They were generally used as traditional medicine, perfume and organic pesticides. Essential oil of kilemo is traded under the name Litsea cubeba oil or Maychang oil. Unfortunately, the raw material for Maychang oil has been obtained from natural forests, not from cultivation. Continuous exploitation without cultivation efforts will threaten the existence of this endemic species. In the past, kilemo was one of the endemic plants in the Dieng Plateau, but now it isn’t easy to find the existence of kilemo. The study aimed to determine the growth of kilemo planted under Eucalyptus stands at three different spacings in a protected forest area at Dieng RPH, Wonosobo. The design used was Block Random Design with five replications. Each replication consisted of 20 plants. The seeds come from Ciwidey, Bandung, West Java. The results showed that one-year-old kilemo planted at a spacing of 5 x 5 m showed the best growth with an average height of 118.66 m, diameter 9.49 mm and 69% survival rate.
Effect of plant growth-promoting rhizobacteria and bionanomaterial membrane applications on chemical properties of peat soils
Authors: Istikorini Y , Nurhafifah  , Hartoyo A P P , Solikhin A , Octiaviani E A 
Published: January 2022

Abstract
Peat soils have low fertility and are very acidic. Applications of plant growth-promoting rhizobacteria (PGPR) and bionanomaterial membranes (BNMs) have high potentials to alter soil pH. However, both applications have never been applied, especially in peat soils. This research aimed to analyze the effect of PGPR and BNMs applications on the chemical properties of peat soils in agroforestry sites. The method used was the sampling of disturbed peat soil. The results showed that after the application of dolomite, manure, PGPR and BNMs, pH values change from very acidic (3.60) to slightly alkaline (7.65), CN ratio from very low (1.20) to high (16), C-organic still very high (43.47%), N-total from very low (1.20%) to very high (1.47%), P-potential from moderate (26.18 mg/100g) to very high (3764.04 mg/100g), Ca-dd from low (4.11 cmol/Kg) to very high (31.59 cmol/kg), K-dd still very high (1.24 cmol/Kg), Mg-dd from high (3.72 cmol/Kg) to very high (23.68 cmol/Kg), Al-dd from very high (5.66 cmol/kg) to low (<0.05 cmol/kg), and base saturation from very low (10.36% ) to very high (100%). The soil fertility was more fertile. The applications of PGPR and BNMs are recommended to improve the peat soil fertility quickly.
Potential of Shorea roxburghii as an important species for greening of an ex-mining land in Klian Intan, Upper Perak
Authors: Zuhaidi Y A , Kamarudin K , Jeyanny V , Fakhri I M , Darshini R 
Published: January 2022

AbstractKlian Intan was formerly an ex-mining land within Rahman Hydraulic Tin Mining areas comprising remaining slime tailings of heterogeneous soil physical and chemical characteristics. A collaboration between Forest Research Institute Malaysia (FRIM) and Rahman Hydraulic Tin (RHT) was vital to establish a model plantation for rehabilitation of ex-mining lands. Soil reclamation was done by layering with mineral and topsoil, adding hydrated lime. Furthermore, planting and observing on the survival rates and total heights ofShorea roxburghii.Based on the results, this species showed a survival rate of 97%. In terms of total heights, this species showed an average mean of 2.75 m with periodic height growth increment at 0.94 m. Planting trees in ex-mining areas are very challenging due to degraded conditions, however, based on this study with modified soil conditions,S. roxburghiishowed a good response in terms of survival. Silvicultural treatments including manuring at 4 months interval, green pruning up to 5 m height, and selected slashing and climber cuttings continues for at least 5 years period before handing over to RHT. The silvicultural regime must be a continuous effort in supporting the tree growth to develop viable good stands for afforestation in ex-mining lands.
Reassessment of peatland fires in Central Kalimantan
Authors: Hayasakaand H , Putra E I 
Published: January 2022

Abstract
The El Niño–Southern Oscillation (ENSO) was used to explain fire occurrences in Indonesia’s peatlands until 2018. However, the severely spread of 2019 fires although there was no El Nino event (Niño 3.4=-0.04, neutral) in a year, urged us to reassess the peat fires using reliable data and scientific knowledge. Here, we did a series of reassessments of peatland fires in Central Kalimantan by using various data and knowledge about fire, including weather, groundwater levels (GWL), air pollutants, and other parameters related to fire. The reassessment is expected to help respond to peatland fires under rapid climate change. A recent study by the authors has shown the effectiveness of the use of the OLR-MC index as an alternative to ENSO and the peatland fire reassessment model (MODEL-0) based on groundwater level (GWL). As a result of reassessing the generation of various air pollutants from the 2002 fire using MODEL-0, we clearly showed that the air pollutants from the peat components increased rapidly with the onset of the deep peat fire. The findings obtained in this paper are expected to be useful in responding to peatland fires under climate change.
The Chemical Properties of Burnt Peat Soil in Teluk Bakung Village, West Kalimantan
Authors: Putri C S , Saharjo B H , Wasis B 
Published: January 2022

Abstract
Peatland is one of Indonesia’s unique ecosystems and has various functions in maintaining environmental stability. The increasing demand for land in various sectors has led to activities in peat areas. Land conversion and sub-optimal management of peatland can affect the properties of the peat. This study aims to analyze the chemical properties of peat soil on four land management areas in Teluk Bakung Village, West Kalimantan. The areas were rubber stand, burnt land, taro plantation with non-burning land management, and taro plantation with burnt land management. The method used was purposive sampling with a set of five points as soil sampling within the plot measuring 20 m x 100 m. Soil samples were taken at a depth of 0 – 10 cm at each site. Then, the soil samples were evenly composited for further analysis in the laboratory. The results of the study showed that the parameters of the chemical properties at each site had various values. Burnt land had higher N, P, K, Na, and CEC values. Meanwhile, the highest pH, Ca, and Mg values were in taro plantations with non-burning land management. Then, the highest ash content values were in taro plantation with burnt land management. For the value of C-organic, rubber stand had the highest percentage compared to the other land conditions.
Analysis of the distribution of hotspot and burn area in Muaro Jambi district, Jambi Province
Authors: Ayuningrum R , Nurhayati A D 
Published: January 2022

Abstract
Jambi Province is one of the fire-prone provinces in Indonesia. One of the districts in Jambi Province that experiences forest and land fires in Muaro Jambi. The objective of this study was to analyze hotspots and burned areas in the Muaro Jambi District in 2015 and 2019. The data used in this study were hotspots and spatial information on burned areas from MODIS Terra/Aqua satellite imagery and rainfall data from BMKG. The results showed that the number of hotspots in 2015 was 2731, with 2.558 hotspots located on peatland. In 2019, hotspot numbers increased by 3321 hotspots, with 3225 hotspots located on peatland. The sub-district that has the highest hotspot number is Kumpeh with 5191 hotspots. The lowest rainfall in 2015 and 2019 was in September. The rainfall in September 2015 was 15.2 mm/month and in September 2019 it was 39.3 mm/month.
Peat fire risk assessment in Central Kalimantan, Indonesia using the Standardized Precipitation Index (SPI)
Authors: Hafni D A F , Putra E I , Harahap A A N , Saharjo B H , Graham L , Nurhayati A D , Cochrane M A 
Published: January 2022

Abstract
Decreased rainfall and drought due to the long dry season affecting peat fires in Indonesia. This condition causes a decrease in the groundwater level and peat drought, bringing a dry conditions of peat that are suitable for fires. Our prolonged studies revealed a close relationship between precipitation, groundwater levels, and peat fires. This paper aims to assess the risk of peat fires by applying the Standardized Precipitation Index (SPI). We used 18-year daily rainfall data (2000–2017), 16-year hotspot data (2002–2017), and 8-year groundwater level data (2010–2017). Our results showed the strong correlation (r = -0.61) between SPI-1 (short term) and the number of fires. The combination of low rainfall. the peat fire occurrences will increase significantly following less SPI-1 value and decreased groundwater levels during the peak of the dry season. A prolonged dry season followed by less rainfall in the normal rainy season will encourage high-intensity peat fires, bring the important of the using of drought patterns for a better risk assessment of future peat fire occurrences.
Have forest and land fires been controlled properly?
Authors: Saharjo B H 
Published: January 2022

Abstract
It is certain that in almost every year forest and land fires in Indonesia will occur, no matter whether it is affected by El-Nino or not. Of course, the negative impacts it causes accompany the fires that occur, such as on health, economic development, social relations, relations between countries, and so on, including the production of greenhouse gas emissions produced during fires, especially on peat land. The results of research and field observations confirm that although the laws and regulations require corporations to construct canal blocks, monitor ground water levels, equip their business areas with fire control facilities and infrastructure, and so on, it turns out that many do not fulfil their obligations. carried out by corporations, including those that often state that they care about the environment the most in the public as well as corporations with investments from abroad. Not to mention what happened on community land where it was proven that the burning was not only a matter of the stomach but had a business nuance, where the fire was no longer 2 ha as legalized for indigenous or traditional communities, but there were already hundreds of ha. This fact confirms that the forest and land fires that occur ensure that not all obligations have been fulfilled and implemented. Not to mention that many district/city or provincial governments are still stuttering in carrying out control activities in the field, as a result of the unavailability of sufficient funds is also not a priority.
Rattan: its role for food-alternative of the community near the peatland areas in Central Kalimantan
Authors: Fambayun R A , Kalima T 
Published: January 2022

Abstract
The rattan existence in the natural habitat is decreasing due to forest and land degradation. On the other hand, an irresponsible extraction of rattan makes its natural condition worsen. At the same time, rattan has an important role in the community subsistence and economically is presumed as a multi-purpose species. The study aimed to examine the role of rattan for food alternatives and how it contributes to the daily life and culture of the community near the peatland areas in Central Kalimantan. The primary and secondary data are collected purposively through field observation and interviews with the local communities in the near peatland areas in two study sites: Mantangai and Katingan in Central Kalimantan. Calamus caesius, C. ornatus, C. trachycoleus, C. javensis, Daemonorops crinita D. fissa, D. angustifolia, and Plectocomiopsis geminiflora are the rattan potentially used as food alternatives. C. ornatus, D. angustifolia, and D. fissa are the preferable rattan used for food by the community near the peatland areas in Central Kalimantan, both for daily and cultural activities.
High yield in moringa for lowland areas was obtained from the Bogor accession
Authors: Mitariastini N L G , Suketi K , Kartika J G 
Published: January 2022

Abstract
Moringa (Moringa oleifera Lam.) is one of the non-wood forest products. Every part of the Moringa plant can be used as a source of food, medicines, and feed. The purpose of this study was to obtain information regarding the growth and production of several Moringa accessions from Indonesia with different leaves harvesting intervals. The study was conducted in January-June 2016 at the Experimental Garden Sawah Baru, Department of Agronomy and Horticulture, Faculty of Agriculture, Bogor Agricultural University, Dramaga. Experiments were arranged in a Randomized Complete Block Design (RCBD) split-plot with 3 replications. The main plot was the accession with 7 different accessions and the subplot was harvesting interval with two levels, namely 5 and 7 weeks. Accessions used were from Lhokseumawe, Bogor, Solo, Banyuwangi, Tabanan, Central Halmahera, and Palu. Results showed the interaction between Bogor accession of 7-week harvesting intervals had the best ratio of harvested leaflets per harvested leaves. Bogor accession had the best growth and production in the number of leaves and weight of harvested branches. Interval harvesting of 7 weeks delivered the best growth and yields. The use of Bogor accession with 7 weeks harvesting interval is advisable to apply for intensive Moringa cultivation in Bogor or other wet lowlands.
Characterization and analysis of nitrate content of vegetable ferns (Pleocnemia irregularis (C. Presl) Holttum) from Dramaga District, Bogor
Authors: Novasari F , Kartika J G , Agusta H 
Published: January 2022

Abstract

Pleocnemia irregularis (C. Presl) Holttum or vegetable fern is common in partial shade in lowland forest and on the edge of forested hills, especially on slopes. The edible part of this plant is its fiddlehead that serves as a vegetable. This study aimed to characterize this vegetable fern phenotype, as well as analyze the nitrate content of its leaves. The research was conducted at the Arboretum of Faculty of Forestry, Bogor Agricultural University (Arboretum 1), Dramaga Research Forest of Bogor Research Centre, and Forest Conservation (CIFOR 1 and CIFOR 2). The result showed that there were no differences in the qualitative characteristics of the fern obtained from the three locations. Based on quantitative characteristics, the vegetable fern at CIFOR 2 is the smallest. Average NO3- (mg.100 g-1) from fiddlehead extraction is below the nitrate acceptable daily intake value based on human weight, recommended by European Commission’s Scientific Committee for Food, therefore, consuming vegetable fern with an average daily consumption of 100 grams Day-1 is considered safe.
Oil palm empty bunches as a growing media for white oyster mushroom (Pleurotus ostreatus)
Authors: Maliana T , Taskirawati I , Baharuddin  
Published: January 2022

Abstract
The media used to grow oyster mushrooms is sawdust waste, such as sengon, gmelina, and candlenut. Therefore, several researchers conducted research to find alternative media to replace sawdust, such as mulberry pulp, sago pulp, coconut fibre, and bamboo pulp. This research utilizes waste of oil palm empty bunches as a medium used to grow oyster mushrooms. In addition, this study aims to determine the duration of immersion of oil palm empty bunches as a pre-treatment before being used as a growing medium for white oyster mushroom (Pleurotus ostreatus). Before being used as a medium, empty fruit bunches of oil palm are cut into small pieces and then made into powder. The stages in this research are mixing raw materials, composting, making baglog, sterilization, inoculation, incubation, maintenance, and harvesting. There were seven treatments applied in this study, namely immersion in cold water for five days (P1), for seven days (P2), and nine days (P3); immersion in 100 °C hot water for 1 hour (P4), for 2 hours (P5), and 3 hours (P6); without immersion or control (P7). The results obtained are empty oil palm fruit bunches with cold soaking for five days (P1) and hot soaking at 100 °C for two hours can be used as a medium for oyster mushroom cultivation.
Assessment of reduced impact logging technique at different logging intensity
Authors: Heriansyah I , Hamid H A , Nurudin A A , Ibrahim S , Abdu A , Alias M A 
Published: January 2022

Abstract
Despite increased recognition of the value provided by forests, the tropical forest potential continued to be seriously degraded, especially by overexploitation. In the field of harvesting, achieving sustainable forest management requires environmentally responsible logging, hence the growing interest in reduced impact logging (RIL) as an alternative strategy to promoting good forestry practices be expected can continue to fulfil the functions of forest ecosystems. The study was conducted in 100 ha of the first cutting cycle and 200 ha of the second cutting cycle of 22 years logged over the forest in Indonesia Borneo. The degraded level is measured based on disclosed area, while potential production of the residual stand is predicted by using growth increment data from a permanent sample plot. Harvest intensity influence significantly to residual stand condition with a positive correlation. Potential production of residual trees in the first logged-over forest after 35 years is almost recovered then can be achieved sustainable yield. It means that 22 years is not a sustainable cutting cycle. The disclosure area after the second logging was high of 66.89 to 69.36. Potential production of residual trees was very low and need 35.5 to 42.8 years to recover, however, the cutting cycle needs a longer time to achieve sustainable forest management as long as 57.3 to 63.2 years. Based on this study, regulation of reduced cutting cycle on logged-over forest after 20 years is not recommended to implement in natural forests.
How the growth of natural forests meets Indonesia’s demand for wood for construction and household furniture?
Authors: Abdulah L , Yulianti M , Mindawati  
Published: January 2022

AbstractTimber forest products are the main source of wood in meeting community needs such as house construction and furniture. However, in the regulation of timber forest products, the use of wood has not been considered. This has an impact on the value of wood, the value of the forest, and the availability of raw materials. For this reason, the purpose of this research is to increase the volume of natural forests that can be cut down to meet national household wood needs. The method used is a stochastic modeling method over the growth of each diameter class. The phenomenon of growth transfer includes ingrowth, upgrowth, and mortality. The results of the model simulation are the number of trees in each diameter class. Stand volume in the diameter class 40 cm up is a reference in the comparison of wood production and use of wood products. The data on the use of wood products is based on an analysis of wood consumption per FAO and Indonesian household wood consumption. The benefit of the research is to provide information on the application of an appropriate silvicultural system for forest management so that sustainable forest management can be realized.