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Journal of Sylva Indonesiana

Jsi
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Published by Universitas Sumatera Utara

ISSN : 26225093 EISSN : 26225158 DOI : 10.32734

Core Subject : Science, Agriculture,

Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences

Journal of Sylva Indonesiana (JSI) is an international peer-reviewed biannual journal (February and August) published by TALENTA Publisher, Universitas Sumatera Utara and managed by Faculty of Forestry, Universitas Sumatera Utara. It is dedicated to interchange for the articles of high-quality research in the field of forestry and natural resources including Forest Management, Social And Economic of Forestry, Forestry Policy, Sylviculture, Forest Ecology, Plantation Forestry, Biotechnology, Forest Conservation, Biodiversity And Natural Resources, Wood Sciences And Technology, Biocomposite, and Non Timber Forest Product. The journal publishes state-of-art scientific articles in fundamental theory, experiments and simulation, as well as applications, with a systematic proposed method, sufficient review on previous works, expanded discussion and concise conclusion. As our commitment to the advancement of science and technology, the Journal of Sylva Indonesiana (JSI) follows the open access policy that allows the published articles freely available online without any subscription.

Arjuna Subject : -

Articles 119 Documents

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Mapping land cover and vegetation detection in urban areas Zaitunah, Anita; Samsuri; Anggie Yohanna Mandalahi; Lailan Syaufina
Journal of Sylva Indonesiana Vol. 5 No. 01 (2022): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

The increase of population has caused land use land cover change. The development of a city has increase the need of settlements and buildings. Monitoring any land cover is important to support environmentally based and sustainable urban planning. Medan as one of big cities in Indonesia has showed a development of the areas. The aim of the study was to analyze the land cover and vegetation existence in two sub-districts of Medan. The supervised classification analysis was conducted for year 2019. Ground check was a part of the study. There were six land cover classes found in the area, namely paddy fields, grass, shrubs, trees, mixed plant, and built-up land. The largest area within two sub-districts is built up areas. The results show less vegetated areas within two sub-districts. There was 86% of built-up areas in Medan Baru and 69.3% in Medan Selayang. Vegetation as an important element in the environment needs to be preserved within the urban areas. There is a need to plant trees in less vegetated areas. Green open space should be incorporated into city planning in order to preserve and improve the quality of the urban environment.

Multi-temporal Satellite Images Analysis for Assessing and Mapping Deforestation in Um Hataba Forest, South Kordofan, Sudan Emad H.E. Yasin; Om Habiba Kamil; Budi Mulyana
Journal of Sylva Indonesiana Vol. 5 No. 01 (2022): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

. Sudan is a hot spot for deforestation, despite the increasing awareness of deforestation and its consequences. Consequences are related to increased emissions of greenhouse gases, water pollution, and loss of biodiversity. However, precise information on its forests' current state is very limited. Therefore, to intervene support of existing resources effectively, it is important to have a better understanding of the process to take place in the country and impact those resources. The objective of this study is assess and map Land use Land cover (LULC) change and analyze the anthropogenic factors causing it in Um Hataba forest, South Kordofan State. The study utilized two-free cloud images (TM 2000 and Sentinel-2 in 2018), field surveys, and questionnaires to analyze the decrease in forest cover. The results indicated there were a decrease in vegetation cover on wadis (clay soil) from 20.98% in 2000 to 15.85% in 2018 and vegetation on sandy soil decreased from 30.29% in 2000 to 30.13% in 2018. While mixed shrubs and grassland increased from 28.60% in 2000 to 33.20% in 2018 of the total area under study and the rainfed agricultural area increased from 20.13% in 2000 to 20.82% in 2018. The main factors of degradation and fragmentation as the expansion of mechanized are rain-fed agriculture, felling of trees and woodcutting, worse grazing activities, and construction of infrastructure. Information garnered from this study can provide a good basis for forest rehabilitation programs and can also be used for developing proper management plans that consider the needs of the communities utilizing the forest.

Analysis of Financial Feasibility and Added Value of Mangrove Plants Processed Product: A Case Study in Kampung Nipah, North Sumatra Province, Indonesia Agus Purwoko; Patana, Pindi; Adisti Yulia Pradita
Journal of Sylva Indonesiana Vol. 5 No. 02 (2022): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

The mangrove ecosystem provides many benefits for the environment and ecosystem services. Mangrove economically can be utilized to become any miscellaneous food and drink. One of the potential mangrove areas is Kampung Nipah, Sei Nagalawan Village, Perbaungan District, Serdang Bedagai Regency, North Sumatra. This study aims to identify the technical aspect of product processing and to analyze the financial feasibility and the added value distribution of mangrove processed products. Data collection used the sensus method and the open interview method with the leader and members of Kelompok Tani MuaraTanjung and data analyzed using the quantitative descriptive method. The result shows that the processing product is still manual and done cooperatively. The products obtained are Jeruju chips, Pedada syrup, and Dodol Api-Api. The business of mangrove processed products produces profit and worth by financial with a Revenue Cost Ratio (R/C) value of 1.6, 1.2, and 1.2, respectively. The Payback Period is 2, 5, and 4, respectively. Break Even Point (BEP) is 15, 13, and 14, respectively. And the BEP Analysis in Rupiah is Rp 5.045, Rp 10.098, and Rp 8.001. All the results show a profit. The added value for each product is Rp 52.871/kg, Rp 20.725/kg, and Rp 31.318/kg.

Community Participation Program in Forest and Land Rehabilitation in the Batutegi Forest Management Unit Rahmat Safeâ€™i; Leo Muhammad Widodo; Gunardi Djoko Winarno; Slamet Budi Yuwono
Journal of Sylva Indonesiana Vol. 5 No. 02 (2022): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Restoration of critical land so that its products can increase and contribute to the community's welfare is a special challenge at this time. One of the efforts made by the government in overcoming this problem is by carrying out Forest and Land Rehabilitation activities by involving farmers as local workers. This study analyses community participation in forest and land rehabilitation programs in Datar Lebuay Village, Air Naningan District, Tanggamus Regency. The research was conducted in June 2021. Data collection was carried out through interviews, observation, and documentation techniques. Respondents were determined using the Slovin formula with an error limit of 10%. The interview process uses a proportional simple random sampling technique. The data obtained were then analyzed descriptively quantitatively using a Likert scale. The results showed that there was several activities rehabilitation forest, namely: the planning subsystem with field technical design activities had a final value of 3, the implementation subsystem with a seedling, planting, and plant maintenance activities, with each final value of 3, except for plants which had a final value of 4 Monitoring and evaluation subsystem with monitoring and evaluation activities, with a final score of 3. The Forest and Land Rehabilitation (FLR) activities with community participation levels have Ordinary criteria (B). This shows that forest rehabilitation activities involving farmers are implemented correctly so that the land on which farmers are involved in rehabilitation activities is expected to be more sustainable.

Similarity Analysis of Understorey Plant Species in Forest Areas Sidabukke , Simon; Ternala Alexander Barus; Budi Utomo; Delvian; Fathiatul Rizkia Aulin
Journal of Sylva Indonesiana Vol. 5 No. 02 (2022): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Many forests have substantial understorey plants. These plants have an important contribution to soil and water conservation. The similarity index determines the resemblance of species structure and composition in a community. This research is aimed to see the impact and relationship of changes in the allocation of forest areas to the similarity of understorey species. The research was conducted using the line plot sampling method, sized 2 m x 2 m, with the understorey plants observed have been measured from germination to young plant (height 1.5 m). The number of plots in the plantation forest is 480 plots, protected areas 224 plots, and natural forest 96 plots. Determination of the number of understorey plots based on the minimum representative area curve. A Similarity Index was performed to analyze the data.Â The results indicated that there is an impact of changes in the forest area on the similarity of understorey species. It is known from the low similarity index value at the research location. It is due to the differences in environmental factors at the two locations such as air humidity, air temperature, the intensity of sunlight, and different patterns of forest area management.

Culm Characteristics of Yellow Bamboo (Bambusa vulgaris var. striata) from Private Forest in Sleman Regency, Yogyakarta Budi Mulyana; Rina Reorita
Journal of Sylva Indonesiana Vol. 5 No. 02 (2022): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Sleman Regency has determined bamboo as a superior non-timber forest product. Yellow bamboo (Bambusa vulgaris var. striata) is usually used for construction and craft materials. Hence, it is necessary to understand the characteristics of the culm. The study aimed to determine the predictor variables for the total internodes, and the distribution pattern of the length and bamboo wall thickness of the internodes on the yellow bamboo culms. The method used in this research was the method of destructive sampling for 30 bamboo culm samples. The samples were measured using a caliper for diameter at breast height and wall thickness, and measurement tape for the total length of the bamboo culm. For detail measurement, each sample was cut for each internode to be measured the length, diameter, and wall thickness of the internodes. The results showed that the predictor of diameter at breast height (dbh) is a predictor in estimating the total number of internodes on the culm resulting in an R2 of 0.631. While the total culm height as a predictor was able to explain the total number of internodes with an R2 value of 0.692. The length of the internodes pattern on the yellow bamboo culm from the bottom to the top side formed a bell curve. In the middle area of the culm, the length of the internode increased, but then it shrank back to the top side. The diameter and wall thickness patterns of the internode were non-linear. In addition, the predictors of diameter at breast height and total height are less accurate to explain the total number of internodes in yellow bamboo culms.

Destruction to Mangrove Forests in East Luwuk, Banggai Regency, Central Sulawesi Kalsum, Ummu; Ris Hadi Purwanto; Lies Rahayu Wijayanti Faida; Sumardi
Journal of Sylva Indonesiana Vol. 5 No. 02 (2022): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

According to the results of interactions between humans and mangrove forests, the causes of mangrove forest destruction are developing very dynamically. In the sub-district of East Luwuk, Banggai Regency, this study aims to determine the causes of mangrove forest damage. With descriptive analysis, this study utilizes qualitative methods. To determine the factors causing damage to mangroves was done by purposive sampling through interviews. The results showed that the damage to mangrove forests was caused by the conversion of mangrove forests into ponds, rice fields, and settlements. By carrying out restoration, rehabilitation, and restoration of damaged areas and recommending pond management by implementing a silvofishery pattern that can meet community welfare and maintain the survival of the mangrove ecosystem.

Empowerment of Abandoned Ponds for Sustainable Mangrove Rehabilitation Activities in Percut Sei Tuan, Deli Serdang, Indonesia Mohammad Basyuni; Rizka Amelia; Dwi Suryanto; Ipanna Enggar Susetya; Yuntha Bimantara
Journal of Sylva Indonesiana Vol. 5 No. 02 (2022): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Mangrove ecosystems provide important functions for ecosystem service. However, the degradation of mangrove forests, especially conversion to aquaculture ponds is a driver for deforestation. Therefore, this study aimed to analyze the mangrove vegetation and duration of inundation in ponds before and after rehabilitation activities were conducted on abandoned ponds. In this analysis, we used the census method to collect structural data, the Important Value Index (IVI), composition and structure, and the diversity index. To determine the duration of inundation at the observation sites in a pond in Tanjung Rejo, Percut Sei Tuan village, we deployed one water logger and two Mini Buoys at ponds. At the observation site, eight pure mangrove species have been founded, namely Avicennia alba, A. marina, Bruguiera gymnorrhiza, Excoecaria agallocha, Rhizophora apiculata, R. mucronata, R. stylosa, and Nypa fruticans. The main species was A. marina which is a total of 756 idv/ha at the seedling stage 52.81 idv/ha at the sapling stage, and 268.09 idv/ha at the tree level. The highest IVI has founded in seedlings, saplings, and trees at A. marina, which was 99.30%. 80.41% and 94.49%, respectively. Rehabilitated Avicennia spp that grew only 2.4% from 2000 seedlings. The low growth of seedlings was influenced by the pond condition which was always in a state of flooding. The current study provides important information that in carrying out planting or rehabilitation activities it is necessary to determine which inundation rotation should be a priority considered.

The Diversity Species of Medicinal Plants in The Martelu Purba Nature Reserve, North Sumatra Rambey, Ridahati; Jelly Permana Purba; Ahmad Baiquni Rangkuti; Arida Susilowati; Onrizal
Journal of Sylva Indonesiana Vol. 5 No. 02 (2022): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Indonesia was known as a country that has high biodiversity, some of them are various types of medicinal plants. Since the first, Indonesian people have used medicinal plants in traditional medicine. This research was conducted in the Martelu Purba Nature Reserve (MPNR), Purba District, Simalungun Regency, North Sumatra. MPNR is a nature reserve consisting of high biodiversity, some of them are medicinal plants. However, the information on medicinal plants in this area is rarely documented even though they have a meaningful contribution as traditional medical treatments for indigenous communities. This study aims to identify all plant species found in the MPNR. This method of research was carried out by exploring key informants, namely the manager of the nature reserve and the local community. Determination of the number of respondents is done by the snowball sampling method. The results showed that there were 44 species of medicinal plants found in the MPNR consisting of 33 families, where the most families were from the Arecaceae family, which was 17.24%. Based on habitus, medicinal plants found inÂ MPNR consist of 20 tree species (45.45%), 13 herb species (29.54%), 5 palm species (11.36%), 4 shrub species (9.09 %), and 2 species from epiphytes (4,54%). Based on the intended use of medicinal plants used as fever, cough, diarrhea, diabetes, wounds, asthma, malaria, and others. Based on the part of the plant that has been used, 19 species from leaves (42.22%), 7 species from fruit/seed (15.90%), 6 species from all plant parts (13.63%), 5 species from bark (11.36%), 2 species from roots (4.54%), 1 species from resin (9.09%), 1 species from the flower (9.09%), 1 species from bark and seeds (9.09%), 1 species from wood (9 .09%), and 1 species from bark and leaves (9.09%). Medicinal plant species found in the MPNR must be conserved to maintain their sustainability and can be used sustainably.

Correlation Between Community Knowledge Level of River Ecosystem Services and Littering Behavior in Belawan Hilir Sub-watershed Ulfa, Mariah; Bejo Slamet; Masrizal Saraan; Harry Kurniawan
Journal of Sylva Indonesiana Vol. 5 No. 02 (2022): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Belawan watershed is one of the watersheds that have a primary role in North Sumatra Province. The flow of the Belawan watershed crosses 2 (two) regencies/cities, i.e., Deli Serdang Regency and Medan City. In more detail, Medan City is located in the Belawan Hilir Sub-watershed. Several main rivers in Medan have been polluted and shallowed, as a result of people's habit of littering the river. People who live around the Belawan watershed have a significant role in the sustainability of the river and its ecosystem services. This study aims to analyze the level of community knowledge of river ecosystem services in the Belawan Hilir sub-watershed and to measure the correlation between the community knowledge level and the behavior of river littering. The respondents were sampled using Simple Random Sampling, while the number of samples was calculated using the Slovin formula. Data was collected through structured interviews by compiling a list of questions (questionnaires). The correlation between community knowledge levels and behavior of river littering was determined using spearman correlation analysis. The community knowledge level was 63% (good category). There was a moderate-positive correlation between the community knowledge level and the behavior of river littering (0.512 correlation coefficient). Community awareness can be increased through online-based socialization using social media or by providing more waste management training programs.

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Editorial Address Campus 2 USU Bekala, Deli Serdang, North Sumatera, 20353, Indonesia

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Contact Name
Moehar Harahap

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mhr_mrghy@usu.ac.id

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Journal Mail Official
jsi@usu.ac.id

Editorial Address
Campus 2 USU Bekala, Deli Serdang, North Sumatera, 20353, Indonesia

Location
Kota medan,

Sumatera utara

INDONESIA