Wahana Forestra: Jurnal Kehutanan (Online ISSN: 2548-608X | Print ISSN : 1858-4209) published by Fakultas Kehutanan, Universitas Lancang Kuning Pekanbaru. Topics covered are all aspects of forest planning, forestry policy, forest ecology, forest resource utilization, forest inventory, silviculture, forest product processing, forest resource conservation, forest socio-economics and evironment. This journal publish two periode in a year on January and July. Wahana Forestra: Jurnal Kehutanan has been accredited by National Journal Accreditation (ARJUNA) Managed by Ministry of Research, Technology, and Higher Education, Republic Indonesia since year 2022 to 2027 according to the decree No. 79/E/KPT/2023
Fakultas Kehutanan Universitas Lancang Kuning
Perencanaan Jalur Interpretasi Wisata Kampung Klaogin, Kabupaten Sorong Selatan
This research aims to develop an interpretation trail in the Klaogin Village Tourist Site, Seremuk District, South Sorong Regency, Southwest Papua Province. The methodology involved landscape observation and structured interviews with local community members to acquire data regarding the activities within the Klaogin Tourist Site. The research findings indicate that Klaogin Village possesses several potential objects suitable for development, such as the Klaogin River, Klaogin Waterfall, and traditional shrimp fishing spots. The presence of these objects demonstrates that the area holds significant educational and conservation value, along with opportunities for community empowerment through sustainable tourism development. The tourist route is designed with a circular pattern, commencing with shrimp fishing activities, continuing with river navigation using traditional boats, and concluding at the Klaogin Waterfall.
Copyright (c) 2026 Wahana Forestra: Jurnal Kehutanan
Studi Keanekaragaman Spesies Anggrek (Orchidaceae) Pada Blok Pemanfaatan Resort Konservasi Wilayah III Taman Wisata Alam Ruteng
This study aims to identify orchid species and analyze the diversity of orchid species (Orchidaceae) found in the utilization block of Conservation Resort III Ranamese Ruteng Nature Park, East Manggarai Regency, East Nusa Tenggara Province. The method used was a transect plot with deliberately determined observation plots. Data analysis included the Shannon-Wiener diversity index (H'), Importance Value Index (INP), Dominance Index (C), Species Richness Index (R), and Morisita's Dispersion Index. The results showed that 23 orchid species were found, consisting of 5 epiphytic orchid species and 18 terrestrial orchid species with a total of 231 individuals. The orchid species diversity index value was 2.85, which is classified as moderate (1<H'<3). The highest Importance Value Index of epiphytic orchids was A. undulata with a value of 15.68%, while the orchid species with the lowest INP were P. imbricata and B. lobii, each with a value of 2.40%. Meanwhile, the highest INP for terrestrial orchids was found in the orchid species C. sylvatica with a value of 29.48%, and the orchid species with the lowest INP value was A. graminifolia at 1.97%.
Doktrin Hutan Negara Dalam Uu No. 5 Tahun 1967: Awal Sentralisasi Kekuasaan Dan Birokratisasi Hutan Di Indonesia
The transition from colonial rule to independence in Indonesia did not immediately end the paradigm of state control over natural resources. This research examines how the Basic Forestry Law (Law No. 5 of 1967) became a fundamental legal instrument that legitimised the state's authoritarian control over forests. Using qualitative content analysis of Law No. 5 of 1967 and its explanation, this study aims to reveal the legal mechanisms used by the New Order regime to institutionalise the state forest doctrine, as well as to design a highly centralised and bureaucratic management structure. The findings indicate that this law effectively consolidates state power in the hands of the central forestry bureaucracy, marginalises the rights of indigenous communities, and provides legal justification for large-scale forest exploitation. Thus, this article argues that Law No. 5 of 1967 was not merely a product of technical regulation, but a political document that laid the foundation for a state-centric model of forest governance, the impact of which is still strongly felt in contemporary forestry issues. This study confirms the need to understand the historical roots of existing forestry policies in order to formulate future reforms.
Pengaruh Formulasi Serbuk Kayu dan Perekat terhadap Karakteristik Dasar Briket Arang Kayu Ulin
Charcoal briquettes are a type of biomass-based alternative fuel regarded as having greater ecological compatibility and economically advantageous compared to fossil fuels. The present study is intended to transform ironwood (Eusideroxylon zwageri) sawdust waste into charcoal briquettes, utilizing tapioca starch binder in varying proportions. The research methods include the carbonization of ironwood sawdust, charcoal pulverization, mixing with tapioca binder, moulding, drying, and evaluation of the briquettes’ physical and chemical attributes. The findings reveal that the proportion of sawdust to binder has no influence on the density, moisture content, or volatile matter of the briquettes; however, it markedly affects the ash content. The calorific values of all the samples comply with the quality requirements specified in SNI 01-6235-2000, although the volatile matter content exceeds the permissible limit. The briquette with formulation C (formulation of sawdust, tapioca, and water namely 2000 g, 300 g, and 300 ml) demonstrated the most optimal performance, with the highest calorific value. This study confirms that ironwood sawdust waste can be effectively utilized in the manufacture of superior charcoal briquettes, representing a sustainable and economically attractive substitute for conventional energy source.
Keanekaragaman Jenis Burung Di Zona Pemanfaatan Dan Zona Tradisional Resort Musuk Cepogo Taman Nasional Gunung Merapi
A high diversity of bird species in an area indicates that the region has a healthy environmental condition. The natural habitat conditions support various bird species living in the Mount Merapi National Park (TNGM) area. The purpose of this research is to determine the species diversity index, feeding guild types, and conservation status of birds in the utilization zone and traditional zone. This research was conducted in May 2025 at the Musuk Cepogo Resort, Mount Merapi National Park (TNGM). The method used was fixed-radius point count along transects. The distance between counting points was 150 meters with an observation radius of 50 meters. Observations were carried out in the morning and evening, with each counting point observed for 10 minutes. There were 15 counting points in the utilization zone (total effort: 150 minutes) and 20 in the traditional zone (total effort: 200 minutes). To account for unequal sampling effort, rarefaction analysis was performed. The results showed that in the utilization zone, 28 species with 167 individuals from 20 families were found, with a moderate species diversity value (H' = 2.98), high evenness (E = 0.90), no dominant species (D = 0.07), and high species richness (R = 5.28).
Sifat Fisika dan Kimia Tanah pada Tegakan Eucalyptus pellita di Hutan Tanaman Industri PT. Arara Abadi, Distrik Sorek, Provinsi Riau
Eucalyptus pellita is one of the main species in Industrial Plantation Forests (HTI) due to its rapid growth, short harvesting rotation, high productivity, and resistance to pests and diseases. However, land clearing and repeated harvesting activities may degrade soil physical and chemical properties. This study aimed to analyze the characteristics and differences in soil physical and chemical properties under Eucalyptus pellita stands aged 0–4 years in the Industrial Plantation Forest of PT Arara Abadi, Sorek District, Riau Province. A quantitative descriptive approach was applied with purposive sampling, followed by laboratory analysis. The results revealed that the soil physical properties were dominated by sandy clay loam texture with high bulk density (>1.65 g/cm³). This condition limits nutrient-holding capacity and potentially restricts root growth. Based on the chemical analysis, the soil was classified as very acidic (pH 3.92–4.34), with very low until low Cation Exchange Capacity (2.028–6.931 meq/100g), very low C-Organic (0.25–0.62%), very low until low Nitrogen (0.07–0.12%), very low Phosphorus (0.01–0.02%), and very low Potassium (<0.001–0.02%). These findings indicate a decline in soil quality, both physically and chemically, with increasing stand age.
Identifikasi Jenis Tumbuhan Pewarna Alami di Hutan Lindung Ile Lewotolok Kabupaten Lembata Provinsi Nusa Tenggara Timur
The community of Waowala Village, in Ile Ape Subdistrict, Lembata Regency, utilizes Non-Timber Forest Products (NTFPs) in the Ile Lewotolok Protected Forest for their daily needs, one of which is natural dye plants used to dye yarn in the production of ikat woven fabrics. The objectives of this study are (1) to identify the types of natural dye plants used by the Dasawisma ikat weaving group in Waowala Village and (2) to identify the factors threatening natural dye plants and the conservation efforts undertaken by the community for natural dye plants used in ikat weaving. This research was conducted in the Ile Lewotolok Protected Forest and in Waowala Village, Ile Ape District, Lembata Regency for one month, from January to February 2025. Data collection techniques used interviews, observation, coordinate point collection, and vegetation analysis. Data analysis used qualitative and quantitative methods. The results showed that there are six types of plants used as dyes for ikat fabrics, namely Tarum (Indigofera tinctoria L), Turmeric (Curcuma longa), Forest Mengkudu (Morinda tinctoria), Kelor (Ceiba pentandra), Teak (Tectona grandis), and Forest Kapok (Ceiba pentandra).
Analisis Peran Kelompok Tani Hutan Konservasi dalam Rehabilitasi Ekosistem di Zona Rehabilitasi Resort Lawe Mamas, Taman Nasional Gunung Leuser
This study aims to analyse the level of effectiveness and contribution of the Conservation Forest Farmers Group (KTHK) as a management partner in supporting ecosystem rehabilitation in the Lawe Mamas Resort Rehabilitation Zone, Gunung Leuser National Park (TNGL). The study used a mixed methods approach with a qualitative approach reinforced by descriptive quantitative analysis through tabulation of KTHK role scores. Data were collected through in-depth interviews, field observations, and questionnaires from 41 informants consisting of government representatives, NGOs, community leaders, and KTHK chairpersons and members. The results of the study show that the educational role has the highest score (2.9), indicating a high level of effectiveness in providing information and raising awareness of conservation, while the economic and social roles are the lowest (2.1) due to limited market access and production facilities. In general, the institutional, participatory, and supervisory roles show fairly strong results with scores between 2.4 and 2.8. These findings confirm that the existence of KTHK contributes significantly to the sustainability of forest area rehabilitation, but requires institutional strengthening and economic support for more sustainable community participation.
Karbonisasi Limbah Biomassa Ampas Sagu Sebagai Bahan Baku Bioenergi
One source of biomass raw material is the sago plant (Metroroxylon sp). Sago (Metroroxylon sp) is vegetation that can produce starch to be used as a food source. Unt il now, sago tree processing waste, especially sago dregs, has not been utilized optimally and only a small portion is used as feed, especially for ruminants. Apart from that, sago dregs are dumped in shelters or along river flows at sago processing locations which results in environmental pollution. Because sago bark waste is biomass waste, it can potentially be used as raw material for bioenergy such as biopellets, biobriquettes, charcoal. The aim of the research is to look at the physical and chemical characteristics of raw materials. The method used refers to the Indonesian National Standard 01-6235 of 2000. The results obtained from this research are the physical properties, namely water content 11.3%, ash content 4.3%, volatile matter content 2.4% and calorific value 6,430 cal. /gram. Meanwhile, the chemical properties analyzed by GCMS contained 18.93% hydrocarbon compounds. Phenol compounds 57.4 %, Benzene compounds 11.41 %
Analisis Kesehatan Tegakan Di Kawasan Hutan Lindung KHdTK Pujon Hill Universitas Muhammadiyah Malang
Protected Forest Area in KHdTK Pujon Hill at Risk of Damage Due to Land Use for Agriculture. This study aims to analyze the health of forest stands in KHdTK Pujon Hill UMM. The research was conducted from November to December 2023 at KHdTK Pujon Hill UMM. Data collection was carried out using the Forest Health Monitoring (FHM) method, paying attention to pre-determined site criteria. The analysis of stand health involves assessing damage by calculating the percentage of frequency and the level of damage to the forest stands.The results show that the damage frequency reaches 91.8%. The most common damaged parts are the lower trunk, branches, and leaves. The most frequently observed types of damage include open wounds, broken/dead branches, termite attacks, and leaves changing color. The level of damage to the stands in KHdTK Pujon Hill UMM is 52.9%, classified as “moderate.” If left untreated, this could potentially escalate to more severe damage, disrupting the growth and development of the stands. This will negatively affect the health status of the forest area.
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Analisis Kelayakan Finansial Usaha Mata Air Sikumbang Di Sekitar Hutan Larangan Adat Kenagarian Rumbio (Studi Kasus : Desa Pulau Sarak)
The Customary Prohibited Forest of Kenagarian Rumbio offers numerous benefits to surrounding communities, including water springs that serve as an economic resource for Pulau Sarak village. It is crucial to assess the financial feasibility of the Sikumbang Spring business in Pulau Sarak village by calculating Net Present Value (NPV), Internal Rate of Return (IRR), Benefit-Cost Ratio (B/CR), and conducting sensitivity analysis. This study employed descriptive quantitative and qualitative methods, with data collected through a census of 8 respondents. The financial feasibility analysis of the Sikumbang Spring business yielded positive results, including a positive NPV, an IRR exceeding the interest rate, a positive Net B/C, and a Payback Period averaging 3 years and 8 months. These findings indicate that continuing the Sikumbang Spring business is feasible. Sensitivity analysis with a 10% cost increase showed a positive NPV, higher IRR, positive Net B/C, and a Payback Period averaging 4 years and 8 months, further supporting the business's viability.
The Customary Prohibited Forest of Kenagarian Rumbio
Analisis Nonparametrik Laju Deforestasi dengan Model Spline Truncated Berbasis Faktor Sosial Ekonomi di Indonesiaic Analysis of Deforestation Rate with Truncated Spline Model Based on Socio-Economic Factors in Indonesia)
Indonesia is known as the "lungs of the world" due to its vast tropical rainforests, which play a crucial role in absorbing carbon dioxide and maintaining global climate stability. However, the sustainability of Indonesia's forests is increasingly threatened by population growth, agricultural land expansion, and the influx of foreign direct investment—defined as capital inflow from abroad into Indonesia in the form of physical assets or corporate ownership—which can lead to land-use changes and potentially accelerate deforestation if not managed sustainably. These factors have caused fluctuations in the deforestation rate over the past twelve years. This study aims to model the deforestation rate by considering relevant social, economic, and environmental variables. The method used is nonparametric truncated spline regression with a single knot point, which satisfies the assumptions of identically distributed, independent, and normally distributed residuals. The model explains 64.20% of the variation in deforestation rates, while the remaining variation is influenced by other factors outside the model. Forest cover area has been proven to have a significant effect on deforestation. These findings highlight the importance of adaptive and evidence-based policies to reduce deforestation, particularly through forest protection and controlling land conversion, in order to preserve Indonesia's ecosystem sustainability and biodiversity.
Truncated Spline Nonparametric Regression
Etnobotani Tumbuhan Upacara Adat Pernikahan Masyarakat Suku Melayu Rokan Hilir, Provinsi Riau
Ceremony Kelurahan Bagan Barat Kecamatan Bangko District Rokan Hilir Riau Province, was conducted in December 2021. The purpose of this study was to determine the types of plants, plant parts used and the method of cultivating plants by the Malay people. The method used in this exploratory survey research and the sampling technique used snowball sampling. Field data collection was in the form of recording local plant names, the parts used, cultivation methods and utilization methods. The data collected was then analyzed descriptively. The results of the study found 12 types of plants from families. The most common family found is aracaceae (Areca Catechu, cocos nucifera). The plant parts used are divided into four parts, namely leaves, fruits, stems and flowers. For the part that is most widely used namely, fruit. Cultivation carried out by the community is by planting it around local residents' houses, in rice fields and in forests. The most cultivated method is by planting it around local residents' houses.
Keanekaragaman Jenis Vegetasi pada Pola Penanaman Agroforestri Kapulaga dan Non Kapulaga di Gapoktanhut Pujo Makmur KPH Pesawaran
The structure and planting pattern of agroforestry land are determined by its plant diversity. Each pattern has a different management method based on the type of plant and the way the land is managed. Therefore, it is crucial to evaluate the variety of plants that comprise the area. The purpose of this study is to identify the diversity of vegetation in cardamom and non-cardamom agroforestry planting patterns in Gapoktanhut Pujo Makmur, KPH Pesawaran. This study was carried out between October and December of 2024, using a quantitative descriptive method and selective sampling to analyze the vegetation. The results showed that cardamom agroforestry had 19 plant species from 13 families. The stand has 1 forestry plant, 2 agricultural plants, 14 MPTS plants, and 2 bushes. Non-cardamom has 17 plant species from 11 families. The stand has 3 forestry, 2 agriculture, and 12 MPTS plants. Cardamom plants have the highest relative density in Random Mixture agroforestry at 67%. Cocoa plants have the highest density in non-cardamom agroforestry at 37%.
Keanekaragaman Jenis Burung Sebagai Daya Tarik Ekowisata Di Ruang Terbuka Hijau Kota Bogor
Bogor City is an area that has a lot of green open space with an area of ​​2,031.66 Ha or 20% of the total area of ​​Bogor City. The city of Bogor has green open spaces that are designated for the community as spaces for interaction. Green open spaces in the city of Bogor can be a habitat for urban birds. The aim of the research is to identify the potential of birds that can be used as ecotourism resources. The research will be carried out from April to June 2024 in Ahmad Yani City Forest Park, Sempur Park and Heulang Park. Bird data was obtained using the IPA (Index Point of Abundance) method or counting point method and listing bird types based on MacKinnon. Ethnoornithological data and perceptions of sustainability were obtained using structured interview methods and open question questionnaires. Data regarding threats to birds was carried out using a purposive sampling interview method. Bogor City's Green Open Space has bird resources that have the potential to be used as bird ecotourism planning. Resources that can be utilized are objects in the form of 28 types of birds and ethnoornithology.
Potensi Simpanan Biomassa dan Karbon di Jalur Hijau Kota Kupang (Studi Kasus: Jalan Piet A. Tallo, Jalan Frans Seda dan Jalan El Tari)
The increase in the number of motorized vehicles and industrial development can increase air pollution in the form of CO2 gas emissions and causes global warming. Efforts that can be made to reduce the impact of global warming are through building green lanes. The presence of vegetation, especially trees in the green belt, can absorb CO2 gas through the leaves and then store them as carbon reserves. This research aims to look at biomass potential, carbon storage and sequestration potential, and look at the economic value of carbon in the green belt area of ​​Kupang City. Tree data was collected using the census method. Understory plant data collection used techniques purposive sampling with 30 sample plots, each measuring 2 m x 2 m, based on different land cover types. Data analysis includes calculated tree biomass used the allometric equation, estimated understory biomass used the biomass formula, carbon content used a carbon percentage of 47%, and calculated CO2 uptake by multiplyed the carbon value by 3,67. The research results show the biomass potential, carbon storage capacity, and CO2 absorption rate in the green belt area respectively 105,67 tonnes/ha, 49,66 tonnes/ha, and 181,72 tonnes/ha, and an economic valuation of IDR 115,997,639.
Pemetaan Wilayah Rawan Kebakaran Hutan dan Lahan terhadap Keberadaan Budidaya Lebah Madu di Kecamatan Mempura, Siak
Wildland fires are one of the threats to forest ecosystems. Human activities are positively correlated and have a significant impact on fires. Therefore, the mapping of vulnerability classes is carried out as an effort to control fires. The necessary control efforts are suppressive, preventive and productive for the community, such as honey bee cultivation. Beekeeping will conserve forests and land and become a source of income through honey harvested by the community. This study aims to mapping the forest and land fire vulnerability class in Siak Regency, Riau Province, and conduct a spatial analysis of the presence of honey bee cultivation on forest and land vulnerability classes. The variables used are natural factors in the form of land cover, vegetation index, humidity index, and surface temperature. Furthermore, human factor variables consist of distance to accessibility and community activity centers. These two factors were scored and weighted. The formula used gave a weight of 0.1 to natural factors and 0.9 to human factors. This research resulted in the class of forest and land fire vulnerability in Mempura District, Siak Regency consisting of 3 classes, namely low (3,095.03 ha or 11.58%), medium (9,002.84 ha or 33.70%) and high (14,620.41 ha or 54.72%). Honey bee cultivation is found in the medium vulnerability class (5 sites) in the cover type and land use of plantations or gardens and in the high vulnerability class (4 sites) in the cover type and land use of plantation forests.
Analisis Perubahan Penutupan Lahan di Taman Hutan Raya Pocut Meurah Intan (Tahura-PMI) Aceh
The study focuses on the analysis of land cover changes in the PMI Forest Park (Tahura PMI) area from 2012 to 2018. It aims to understand the reasons for these changes by utilizing the Geographic Information System (GIS) method and comparing three land use interpretation maps derived from Landsat ETM+ images taken in 2012, 2015, and 2018. The results of the classification show that TAHURA PMI has eight land cover classes, with 2 categorized as forest and 6 as non-forest. Forest management in this area is crucial to prevent further forest degradation and is therefore a key focus of the study.
Uji Akurasi Foto Udara di Kawasan Objek Wisata Alam Pulau Semut Pekanbaru
One of the most prominent forms tourism today is ecotourism, and Pulau Semut Nature Tourism Object in Pekanbaru is a prime example of natural tourism area that has embraced this trend. The successful development of this tourist attraction hinges on meticulous planning. Utilizing aerial photographs captured by Unmanned Aircraft Technology (PUTA), managers can access high-quality data that adheres to the standards of the Geospatial Information Agency (BIG) of the Republic of Indonesia. This study aims to assess the accuracy of PUTA aerial photography at Pulau Semut Nature Tourism Object in Pekanbaru. By comparing measurement from aerial photographs and the actual field, accuracy values were calculated using the Commission Omissions method. The resuls showed an impressive accuracy value of 99.03%, with an accuracy error of 0.97%, based on 25 samples of 10 types of research objects. As a consequence, , it can be concluede that PUTA aerial photography can be effectively utilized for regional monitoring, regional development planning, and mapping due to their exceptionally high level of accuracy.
Dampak Proses Bleaching terhadap Sifat Kimia dan Mekanis Kayu Karet yang Terinfeksi Blue Stain pada Produk Furnitur
The use of wood for a specific purpose can be done by considering the level of wood durability against wood-destroying organisms. The purpose of this study was to analyze the weight loss and durability level of six types of sawmill industries in Pringgarata District Pemepek Village, Central Lombok using the grave yard test method. This research method used a non-factorial Completely Randomized Design (CRD), including the preparation and making of test samples, testing the natural durability of wood, and determining the resistance class and weight loss of wood after the burial test. The results showed that the value of the loss of weight of the natural durability of sawmill industrial wood in Pemepek Village, Pringgarata District, Central Lombok against subterranean termite attacks with the grave yard test ranged from 3.43 to 8.10%, with moisture content below 10% and a density of 0.34 to 0.89 gr/cm3. The species of wood did not significantly affect the weight loss of wood, but significantly affected the moisture content and density of wood. Overall, the types of sawmill for the wood industry in Pemepek Village, Pringgarata District, Central Lombok is in the clases I, II, and III, classified as highly to moderately resistant
Faktor Penyebab dan Peran Stakeholder Terhadap Permasalahan Perambahan di Kawasan Hutan Produksi (Studi Kasus: Hutan Produksi Manus Mbengan RTK 110 di Desa Rana Kolong Kecamatan Kota Komba, Kabupaten Manggarai Timur Provinsi Nusa Tenggara Timur)
The Manus Mbengan RTK 110 Production Forest Area is one of the forest areas that has undergone changes due to deforestation, manifested in land clearing or the expansion of plantations by the surrounding communities. This research aims to explore the factors driving encroachment and examine the roles played by various stakeholders in managing these issues within the Manus Mbengan RTK 110 Production Forest area, located in Rana Kolong Village, Kota Komba District, East Manggarai Regency. The study adopted a qualitative method with a case study design. For the community, participants were selected using snowball sampling, while stakeholders were chosen through purposive sampling. Data were collected thorough in-depth interviews, observations, documentation and document reviews. The instrument used was an in-depth interview guideline. Data were analised using qualitative thematic. The findings identified five key factors contributing to encroachment (social and economic, forest access, culture, legal leniency toward the perpetrators, and limited personnel for supervising and securing the forest area). Stakeholders have played their respective roles in addressing these challenges.
Evaluasi Pengelolaan Hutan Kemasyarakatan (HKm) dan Dampaknya Terhadap Kondisi Hutan di Kelompok Perhutanan Hkm Buli Uher, Desa Ilinmedo Kecamatan Waiblama Kabupaten Sikka
The aims of evaluation of the community forest management of HKm Buli Uher, Ilinmedo Village, Waiblama District, Sikka Regency to observe and assess the implementation of HKm. The method used mixed method between qualitative and quantitative methods. The results of the quantitative method were a scoring evaluation of HKm management, which is based on the weight of several variables, including institutional, community empowerment, HKm area governance, and HKm business governance, as well as data collection on land cover analysis and vegetation analysis. A simple random sample is the first step method in the vegetation analysis process, and a line transect is subsequently used. Meanwhile, the qualitative method is information or data from interviews, observations, and documents related to the management of Buli Uher HKm. The results showed that the management of the Buli Uher HKm in Ilinmedo Village received an assessment with good criteria. In the meantime, the Ilinmedo Protected Forest in HKm Buli Uher experienced a notable reduction in forest conditions in 2023, according to the results of a vegetation study and land cover changes, with vegetation that is changing after being damaged. It happened as a result of the community's logging and forest burning.
Model Alometrik untuk menduga volume pohon berdiri Shorea leprosula Miq, PT Gunung Muro Wahana Jaya
The potential of timber forest products is usually assessed using ITSP (Inventarisasi Tegakan Sebelum Penebangan) activities. However, ITSP activities require expensive costs and, a long time, and measurement of branch-free height is difficult due to environmental factors such as topography in the field. One way is to create an allometric model of standing tree volume estimation with the independent variable of diameter at breast height. The study used a purposive sampling method and made 19 plots. The measuring plot area is 5 m x 5 m, 10 m x 10 m, 20 m x 20 m. Measurement of diameter at the breast heigh >10 cm and branch-free height. Conduct R2-adj model fit test, residual standard error, F test, and t-test with 0.05 test level. Validation test using NRMSE and MAPE. The result of the study is the best allometric model to estimate the volume of standing trees is the power model Y= 0.001 D2.380, Y as the volume of standing trees and D as the diameter at breast height. The NRMSE validation test value is 1.02% and MAPE is, 0.32% meaning that the power model has excellent estimation capabilities.
Analisis Korelasi Keanekaragaman Jenis Pohon dan Burung pada Hutan Kemasyarakatan KPH Batutegi
The Community Forest (HKm) in KPH Batutegi, which functions as a protected forest, provides an ideal habitat for birds through a maintained ecosystem. Birds play an important role as seed dispersers, insect controllers and pollinators, so their diversity needs to be preserved. The aim of this research is to analyze the relationship between bird diversity and tree species diversity. The method used is purposive sampling for counting trees and points for birds, with descriptive analysis using indices of diversity, richness and evenness of species, as well as the Spearman rank correlation test. Research shows that bird diversity (3.07) is classified as high. Species richness (6.49) is good. Species evenness (0.94) indicates a relatively balanced number of individuals. The test stated that there was a significant relationship between bird species diversity and tree diversity at the research location. The more diverse the vegetation, the greater the diversity of birds.
Keawetan 6 Jenis Kayu Industri Penggergajian di Desa Pemepek, Kecamatan Pringgarata Lombok Tengah
Keanekaragaman Tanaman Lokal di Areal Reklamasi Pasca Tambang PT. Mifa Bersaudara, Aceh Barat
The diversity of local plant types is crucial for building a healthy and sustainable ecosystem. The objectives of this research are: (1) Identifying and counting the number of local plants in the reclamation area at the Rina location; (2) Calculate the Importance Value Index, Diversity Index, Dominance Index and Species Evenness Index in the reclamation area at the Rina location. This research uses a survey method with data collection using the census method. All local plants found were identified and counted in number and the circumference and height (strata of saplings, poles and trees) were measured. The results of this research show that 22 types of forest plants were found growing in the PIT Rina PT Reclamation Area. Mifa Brothers, West Aceh with a total of 1112 individuals in a row, in the seedling strata of 603 individuals, saplings of 457 individuals, poles of 43 individuals and trees of 9 individuals; (2) The Species Diversity Index (H') and Species Evenness Index (E) in the PIT Rina Reclamation Area respectively are 2.013 and 0.651, which are moderate. Meanwhile, the Type Dominance Index (C) is 0.223, which is relatively low, dominated by the Laban type (Vitex pinnata).
Optimalisasi Penggunaan Lahan dengan Pola Agroforestri di Kampus IV Dusun Bangko, Halmahera Barat
Good forest management practices are hoped to have a positive impact on the economic conditions of local communities around the forest. One form of forest management in Indonesia is agroforestry. Agroforestry is a form of land management system designed to increase productivity and biodiversity, so it is often used as an example of a sustainable land management system. The purpose of this study is to analyze the types of plants planted and the agroforestry planting patterns used. The research method is through observation, inventory and careful documentation of the research being researched. The results of the study show that the agroforestry developed to utilize the land on campus IV, Bangko Hamlet is a simple agroforestry and complex agroforestry with an alternative rows planting pattern or also known as the path system. The types of forest plants developed are white teak (Gmelina arborea), motoa (Pometia pinnata), linggua (Petrocarpus Indicus), lofasa (Vitex cofasuss) and other MPTS plants, namely mango (Mangifera indica), durian (Durio), dragon fruit and banana agricultural crops (Musa Paradisiac), cassava (Manihot esculenta), corn (Zea mays) and several types of horticultural plants.
Kehilangan Karbon Akibat Drainase Lahan Gambut Pada Pengelolaan Hutan Tanaman Acacia crassicarpa
The development of drainage in Acacia crassicarpa plantations in order to control groundwater levels has an impact on CO2 emissions in the atmosphere. The research aims to predict and analyze the amount of CO2 emissions from drainage development activities in the management of Acacia crassicarpa plantations. The study was conducted in Acacia crassicarpa plantations located in Siak Regency, Riau Province. In this research, peat soil samples were purposively taken from three locations near the drainage points. Measurements were taken for bulk density, water content, ash content, organic carbon content, and emissions from the decomposition process due to drainage channel construction. Peat water content ranged from 542.56 to 1021.62%, bulk density ranged from 0.13 to 0.07 grams/cm3, ash content ranged from 0.66 to 2.48%, and carbon content ranged from 56.55 to 57.62%. The construction of a 3-meter deep canal is projected to result in emissions of 273 tons/ha/year.
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Analisis Tingkat Kesehatan Hutan Lindung Mutis Timau di Desa Fatumnasi Kecamatan Fatumnasi Kabupaten Timor Tengah Selatan
Meeting the needs of the community in the village buffer zone of the protected forest area continues to increase due to the increase in population population that continues to grow every year. Probability of impact increasing population negatively affects the utilization of forest areas and their health. forest area and its health. This study aims to determine the condition of health of the Mutis Timau Protection Forest through indicators of vitality, biodiversity and productivity. This paper uses the Forest Health Monitoring (FHM) method. Results identification results found that there were 475 individuals of 5 tree species that experienced damage, including ampupu (Eucalyptus urophylla), santigi (Vaccinium varingiaefolium), cassowary (Casuarina junghuhniana), pulai (Alstonia scholaris) and mahang (Macaranga mauritiana). The health condition of the Mutis Timau protected forest is in the medium damage category as assessed by the from the vitality indicator, low category for the assessment of the species richness index, medium category for the species diversity index. species richness index, medium category for species diversity index, and low category for evenness index, as well as low category for the for the evenness index, and a high category for the productivity indicator.
Pengaruh Kompos Terhadap Pertumbuhan Cabutan Anakan Bebira (Fagraea crenulata)
The bebira tree (Fagraea crenulata) is a type of plant that grows in the lowlands on flooded land in Indonesia, especially in the provinces of Riau and Central Kalimantan. To reproduce this plant, the right type of media and fertilizer has not yet been found. The research aims to determine the appropriate dose of compost fertilizer as a planting medium for plucked bebira (F. crenulata) seedlings. The study used a completely randomized design consisting of 5 treatments Topsoil PMK 100% + NPK 2 g, Topsoil PMK 75% + Compost 25% + NPK 2 g, Topsoil PMK 50% + Compost 50% + NPK 2 g, Topsoil PMK 25% + Compost 75% + NPK 2 g, Compost 100% + NPK 2 g). The results showed that compost and NPK fertilizers in all treatments produced a survival percentage of 100%, had a significant effect on the increase in height and stem diameter and had no significant effect on the increase in the number of bebira (F. crenulata) leaves. Treatment of 100% compost + 2 g NPK resulted in better growth of bebira seedlings