Journal of Sylva Indonesiana

Vegetation Composition of the Succession Forest of Sumatran Orangutan (Pongo abelii) Habitat in Tropical Lowland Forest, Gunung Leuser National Park

2023-10-26T10:51:09+07:00

The Gunung Leuser National Park (GLNP) area, among others, consist of tropical lowland-forest ecosystems that becomes the habitat of Sumatran orangutans (Pongo abelii). The GLNP is located at Aceh dan North Sumatra Provinces and lies on 830,268,95 hectares of land. To date, the area is not free from the pressure of forest degradation, such as encroachment and land conversion to plantations. This is a perturbing condition, especially concerning the biodiversity in its lowland-forest ecosystem. The vegetation composition that renders the succession of Sumatran orangutans in the GLNP lowland-forest was obtained by conducting vegetation analysis on the restoration sites in the forest. The analysis method adopted on this research was the grid-path method. Two transect lines, 1,000 metres each, were made for this purpose. Each line consisted of 10 plots with a distance of 100 metres between plots. The measurements were made on the growth rate of seedling, sapling, pole, and tree. The data were then processed to determine the Important Value Index (IVI), Diversity Index, Richness Index of vegetation, and Dominance Index of the research area. The results showed that the vegetation composition that rendered the succession of lowland-forests of GLNP consisted of 58 species and 26 families. Ficus fistulosa had the highest IVI at the growth-stages of seedling and sapling. And Macaranga tanarius had the highest IVI at the growth-stages of pole and tree. The species Diversity Index (Shannon-Wiener index) of the vegetation on the restoration site in lowland forests of GLNP showed moderate values at the growth-stage of seedling and pole, and high values at the growth-stages of sapling and tree. The Richness Index of vegetation showed moderate values at the growth-stages of seedling and pole. As for at the stages of sapling and tree, it showed high values. The Dominance Index of the restoration site in lowland forests of GLNP showed high values at all growth-stages.

Gayo Lues Regency Community Perception and Participation in the Implementation of Forest and Land Rehabilitation Activities (RHL)

2023-07-26T09:18:39+07:00

Perceptions and participation of the community must be encouraged cso that forest and land rehabilitation activities become a shared responsibility so that forests do not experience degradation which is very worrying. The purpose of this study is to determine the perception, participation and factors that influence community participation in forest and land rehabilitation activities. The flock that will be conducted research related to Forest and Land Rehabilitation consists of 3 sub-districts namely Terangun, Blangkejeren, and Blangjerango sub-districts of Gayo Lues Regency with a total sample of 91 people. The findings showed that the level of community perception in Terangun, Blangkejeren, and Blangjerango sub-districts on Land and Forest Rehabilitation activities obtained a perception value classified as good in each aspect, namely aspects of planning, implementation, utilization and evaluation. Furthermore, the level of community participation in forest and land rehabilitation (RHL) activities in Terangun, Bangkejeren, and Blangjerango sub-districts can be said to have high participation in each aspect, namely planning, implementation, utilization and evaluation. Then the factors that influence the level of community participation in Land and Forest Rehabilitation activities are age, education level, and income

Buhunuah Hill Tourism Supporting Capacity of Tunggul Boyok Village, Bonti Sub-District, Sanggau Regency

2025-02-05T14:54:05+07:00

Buhunuah Hill is a tourist destination located in Petuo Hamlet, Tunggul Boyok Village, Bonti District, Sanggau Regency, West Kalimantan Province. This Buhunuah Hill tourist attraction is still relatively new, so there is a lack of information about the number of proper tourist capacities in the Buhunuah Hill camping area, which is not optimal. Therefore, it is necessary to conduct research on the Buhunuah Hill Tourism Carrying Capacity for its development. This study aims to obtain the value of the carrying capacity of the area, including physical carrying capacity, real carrying capacity, and effective carrying capacity. This study used survey, observation, and interview methods. The analysis used is quantitative descriptive analysis. This study shows that the physical carrying capacity (PCC) value of the camping area is 11, the real carrying capacity (RCC) value for Buhunuah Hill tourism is 11, and the effective carrying capacity (ECC) value for Buhunuah Hill tourism is 11. The carrying capacity value results are obtained by the equation PCC = RCC = ECC. This means that the carrying capacity value of Buhunuah Hill tourism is optimal and can accommodate tourists with all tourism activities as long as it does not exceed the maximum value of tourism carrying capacity.

Model Forest and Land Fires in Kahayan Central Forest Management Unit

2025-01-30T17:23:10+07:00

In 2015 and 2019, the Central Kahayan Forest Management Unit (FMU) experienced forest fires on peatlands that had significant impacts on ecological, economic, and social aspects. Consequently, it is imperative to devise a comprehensive strategy aimed at the enhancement of a susceptibility map for forest and land fires. This research endeavor seeks to construct a detailed framework that assesses the susceptibility of forested areas and land to fire incidents inside of the Kahayan Central Forest Management Unit (FMU). The frameworking procedure will employ an integrated approach that synergizes the Analytical Hierarchy procedure (AHP) by Geographic Information System (GIS) technologies to achieve a more robust analysis of fire susceptibility. The outcomes showed that there are three classes of forest and land fire susceptibility, namely the unsusceptible class covering 152,760 hectares (41%), the moderately susceptible class covering 150,171 hectares (40%), and the very susceptible class covering 72,585 hectares (19%). The outcomes of this research are anticipated to provide a foundational framework for the effective management and mitigation of forest and land fires inside of the Central Kahayan Forest Management Unit (FMU), thereby aiming to alleviate the adverse impacts associated by such incidents.

Mangrove Vegetation Analysis in Forest Area of Batu Bara Regency

2024-07-04T15:35:44+07:00

The forest area in Batu Bara Regency is managed by Unit X KPHL Batu Bara, which has a coastal area with coastal forest characteristics and is dominated by mangrove ecosystems. Currently, the condition of land cover in the forest area in Batu Bara Regency has undergone many changes in terms of function and designation, so an analysis is needed to determine the condition of the mangrove ecosystem. Spatial analysis was carried out to ensure the area with mangrove vegetation land cover in the Unit X Batu Bara management area, which will then be the basis for determining the location of the mangrove vegetation analysis. Based on the results of spatial analysis of changes in land cover, land cover in Unit X KPHL Batu Bara is dominated by dry land agriculture and ponds. Meanwhile, land covered with secondary mangrove forest criteria has increased in area from previously ± 297.79 Ha (8.11%) to ± 535.89 Ha (14.59%). Based on vegetation analysis, the results of the study indicate that the condition of the mangrove ecosystem in KPH Unit X KPHL Batu Bara is currently in a condition of sparse density for tree classification, moderate density for sapling classification, and dense for seedling classification with moderate species diversity.

Co-situation of Using Sonki in Gum Arabic Production in Abu Zabad Locality, West Kordofan State, Sudan

2025-02-05T09:08:06+07:00

This study investigated the adaptation and use of the Sonki tapping tool for gum Arabic production from Acacia senegal in Abu Zabad locality, West Kordofan, Sudan. Data were collected from 140 randomly selected producers (63 % of the total producersâ€™ population) using structured questionnaires and 11 focus group discussions. Descriptive statistic and Chi-square tests were conducted using SPSS, OriginPro 2024b, and Microsoft Excel. Results indicated that 78.6 % of respondents practiced farming alongside gum Arabic production, predominantly as an inherited tradition. About 72.9 % tapped gum trees in October. However, awareness of the Sonki tools was reported by 62 % of respondents, with 52.9 % utilizing it. Although, the access to the Sonki tool was primarily through market (94.9 %), with a smaller portion obtaining it from the Forest National Corporation and NGOs. Further, provision and training was identified by 83 % of respondents as a critical factors in promoting adaptation. Chi-square analysis showed that significant differences (P â‰¤ 0.05) between years of experience, knowledge of Sonki and usage. The proportion of the producers owing and using Sonki was 72 %. Despite the access and knowledge barriers. The study concluded that while progress has been made, broader dissemination and adaptation are essential. The findings of study recommend that, facilitating access, promoting proper use, and emphasizing provision Sonki and training to ensure sustainable tapping practices.

Comparative Study of Physiochemical Properties and Microbial Population in Forest and Shifting Cultivation Soil in Mizoram, India

2025-02-05T09:08:58+07:00

Forest loss due to shifting cultivation (jhum) is believed to have intensified in recent years, primarily due to increasing population pressures and shorter fallow cycles. This study aims to examine the physiochemical properties and microbial population in forest soil and soil under shifting cultivation (jhum) in Mizoram, India. Soil samples were collected randomly in forest and shifting area using three depths (0 – 15 cm, 16 – 30 cm and 31 – 45 cm). Forest soil exhibited higher nitrogen (N) level, organic carbon content, moisture content and microbial diversity compared to shifting cultivation soil, which showed slightly higher phosphorus (P) level and comparable potassium (K) concentrations. Correlation revealed that forest soil had lower bulk density and higher water-holding capacity, linked to their enhanced organic matter and microbial activity. Additionally, shifting cultivation was associated with soil compaction, reduced nutrient availability and lower microbial populations, highlighting the negative impact of land-use change on soil health and ecosystem functioning. Moreover, these findings emphasize the need for sustainable land management practices to mitigate soil degradation and support soil fertility in shifting cultivation system