Journal of Tropical Silviculture

Analisis Kualitas Air untuk Pengembangan Sarana Rekreasi dan Budidaya Perikanan di Situ Cicadas

2023-09-26T13:25:00+07:00

The existence of Situ Cicadas is very important for the survival of the community both socio-economically and psychologically. In the future, the development of Situ Cicadas will be developed into a water recreation area and aquaculture. However, the problem faced is that the upstream condition of Situ Cicadas is a company and community settlements are suspected of being a source of pollution to the water body of Situ Cicadas. So, it is necessary to know the water quality and the value of pollution parameters in Situ Cicadas. The results of this study are expected to be important information for future management planning for Cicadas lakes. The results showed that the waters in Cicadas Lake had good brightness and pH for aquaculture and water recreation. However, the content of TSS, BOD, and COD far exceeds the water quality standard values determined by the government through PP No. 22 of 2021. Thus, joint action is needed by the parties to maintain and improve the quality of the waters in Cicadas Lake.

Keywords: Pollutant parameters, Situ Cicadas, water quality

Keanekaragaman Vegetasi pada Sistem Agroforestri Berbasis Kopi di Desa Rowosari Kecamatan Sumberjambe Kabupaten Jember

2023-09-26T13:24:56+07:00

The coffee-based agroforestry system is one of the agroforestry systems that has a variety
of plants and support ecosystem services. This study aims to determine the diversity of vegetation in coffee-based agroforestry systems in Rowosari Village, Sumberjambe District, Jember Regency. The research was conducted on simple agroforestry and complex agroforestry using purposive sampling to collect vegetation data using the single square method. The results showed that the highest importance value index was for undergrowth, namely Oplismenus hirtellus in complex agroforestry lands (INP = 36,607%) and simple agroforestry lands (INP = 36,301%). The highest importance value index was for trees in complex agroforestry, namely Coffea canephora (INP = 101,158%) and in simple agroforestry, namely Pinus merkusii (INP = 107,104%) and Coffea canephora (INP = 105,832%). The index of species diversity, evenness, and species richness of the undergrowth had the highest value.

Keywords: agroforestry, diversity, vegetation structure

Aplikasi Seedballs untuk Pertumbuhan Benih Nangka (Artocarpus heterophyllus), Bisbul (Diospyros blancoi), dan Merbau (Intsia bijuga)

2023-09-26T13:24:52+07:00

The area of critical land in Indonesia is increasing. Critical land rehabilitation has been carried out by one of the methods used is direct planting. However, direct planting has drawbacks, namely the seeds are very prone to be eaten by insects and birds, and the seeds are easily damaged due to environmental factors. One method that can be tested is the application of seedballs using adaptive plants, such as jackfruit (Artocarpus heterophyllus), bisbul (Diospyros blancoi), and merbau (Intsia bijuga). The purpose of this study was to formulate seedballs and their application for the growth of jackfruit (A. heterophyllus), bisbul (D. blancoi), and merbau (I. bijuga) plants. This study used a quantitative descriptive analysis method with 3 types of seedballs’ formulas. The results showed the fastest germination rate was produced by formula 1 (clay) on bisbul, formula 2 (clay: topsoil) on jackfruit, and formula 3 (clay: topsoil: husk charcoal: palm waste) on merbau. The highest seed germination capacities were formulas 1 and 3 for jackfruit species, formulas 2 and 3 for bisbul species, as well as formulas 1 and 2 for merbau species. Formula 3 is generally able to increase the height, diameter, and number of leaves of plants.

Keywords: acceleration of rehabilitation, adaptive plant, oil palm waste

Pola Kebakaran Hutan di Areal Konservasi Studi Kasus di Taman Nasional Bromo Tengger Semeru

2023-09-26T13:24:48+07:00

Forest fires are disasters that can occur due to environmental conditions that support one of them, such as El Nino events or extreme climatic conditions. One of the factors that influences the occurrence of extreme climates is rainfall. Forest fires in Indonesia are mostly caused by human activities, which are supported by extreme climatic conditions. Forest areas that have the potential to cause forest fires include conservation areas that are closely related to human activities. Conservation areas that are closely related to humans include the Bromo Tengger Semeru National Park (TNBTS). TNBTS has the function of a conservation area as well as a tourist area. The existence of humans who become tourists or visitors in conservation area locations creates opportunities for forest fires in conservation areas that are supported by extreme climatic conditions. TNBTS has a rainfall pattern, with the lowest rainfall occurring in May-Jun-Jul-Aug-Sept, while the highest is in Nov-Dec-Jan-Feb-Mar. When there is low rainfall, it can cause the TNBTS area to be prone to fire, so it is necessary to take preventive measures in the month before the dry season occurs. Prevention as an effort to control forest fires can be done by keeping the area tighter at the start of the dry season, namely in May. Based on hotspot data of fire incidents from 2001–2020, the most frequent occurrences were in other nationalities in 2001, 2014, and 2019. Based on the results of identification using data, not all hotspots can be declared fire incidents, but heat generated from the existing crater of Mount Semeru at the TNBTS location.

Keywords: Bromo Tengger Semeru, Forest Fire, Conservation Area, Hotspot, National Park

Evaluasi Pertumbuhan Anakan Mangrove Hasil Restorasi di Suaka Margasatwa Pulau Rambut, Kepulauan Seribu

2023-09-26T13:24:45+07:00

Pulau Rambut Wildlife Reserve (SMPR) is a conservation area located in the Thousand Islands. The status of a conservation area makes Pulau Rambut an area that must be preserved so its ecosystem functions can run optimally. One of the efforts to restore the function of the mangrove ecosystem in SMPR is to carry out the restoration. This study aims to determine the success rate of mangrove planting in the Pulau Rambut Wildlife Reserve (SMPR) and measure the growth and health condition of the planted seedlings. The data taken in this study were the number of seedlings, the height of the shoots of the seedlings, the diameter of the seedlings' stems, and the seedlings' health conditions. Mangrove planting at SMPR showed a low survival rate of 27,19% at Station I the northwestern part of the island) and 13% at Station II (northern part of the island). Station, I had an average height of seedlings of 31,08 cm, lower than the average height at Station II, which was 43.48 cm. The average diameter of seedlings at Station I (0,76 cm) is relatively the same as the average of seedlings at Station II (0,75 cm). In contrast, the proportion of healthy mangrove seedlings at both stations is relatively low (<11%).

Keywords: Evaluation of planting, mangrove, Pulau Rambut Wildlife Reserve, restoration

Pengaruh Curah Hujan dan Terjadinya Kebakaran Hutan dan Lahan Gambut di Kabupaten Tanjung Jabung Timur, Provinsi Jambi

2023-09-26T13:24:41+07:00

East Tanjung Jabung Regency is one of the easternmost districts of Jambi Province and has the largest peatland area in Jambi Province. The research aims to determine the effect of rainfall and its relation to hotspots as an indicator of forest and peatland fires in East Tanjung Jabung Regency, Jambi Province. The data used in this study were sourced from NASA FIRMS for hotspots and NASA POWER for rainfall, which were analyzed descriptively and correlationally. The results of the study show that the number of annual hotspots from 2018 to 2022 is 1696, with 1075 points on peatlands and 621 others on mineral lands. The increase occurred in 2019 by 1636 points due to fire incidents that covered 5,151.02 ha. The results of the correlation analysis show that rainfall with hotspots does not have a significant correlation with a strong negative correlation coefficient, so an increase in hotspots is followed by a decrease in rainfall, and vice versa.

Keywords: forest and land fire, hotspot, rainfall, Tanjung Jabung Timur Regency

Komposisi Jenis dan Struktur Hutan di Taman Hutan Raya Dr. Moh. Hatta, Padang, Sumatera Barat

2023-09-26T13:24:37+07:00

According to Law of Republic of Indonesia No. 5 of 1990, the Forest Park is a nature conservation area which collects natural and unnatural plants and animals. The composition and structure of stands can be used to estimate the density of trees in various diameter classes. This study aims to determine the composition and structure of the vegetation contained in the block protection, utilization, and collection. The research was conducted from January to February 2021 at Bung Hatta Forest Park Conservation Area Padang, West Sumatera. The research result show that dominant type found in the protection block for the tree’s level was Glochidion obscurum. In the utilization block, the dominant type called Pinus merkusii, then in the collection block dominated by Swietenia macrophylla. The diversity index value (H') on the three blocks is classified as the moderate with H' value between 1-2. Meanwhile, the wealth index is classified as the low with a value of R1 <3.5. The result also found that the pattern of species distribution is clumped. The stratification of Bung Hatta Forest Park Conservation Area’s crown is in the B and C stratum.

Keywords: diversity index (H'), dominant type, composition, richness index (R1), vegetation structure

Distribusi Ruang Vertikal Burung di Hutan UB Forest Malang Jawa Timur

2023-09-26T13:24:33+07:00

The sustainability of birds is also influenced by the dynamics that occur in nature. Conditions like this can be studied by looking at various patterns and habits such as distribution patterns, activities, and other habits. In a habitat type, the same species can fill different vertical spaces. This is also related to the components that support bird life, starting from shelter, cover, feed, and other habitat components. UB Forest as a bird habitat is managed by Universitas Brawijaya. There is a conservation program in its management to maintain the sustainability of the resources in it. The physical form of UB Forest has various Forest strata, so that the vertical distribution of birds can determine the sustainability and health of the Forest. This study aims to analyse the vertical use of space for birds in UB Forest to see the proportion of bird preservation in the Forest area. The research was conducted in three types of habitats, namely Coffee Pine, Coffee Mahogany, and Natural Forest. The results of the observations found 59 species of birds from 27 families spread over the three types of habitats. Then the vertical distribution of the most common bird species is in strata B and C. The value of bird conservation when viewed from the conservation status, UB Forest's Forest has a fairly high value. There are two species that have NT status, one VU, and one EN based on the IUCN red list. Six are included in CITES Appendix II, and seven species are protected by the government. The uniqueness possessed by birds can be offered as one of the ecotourism packages.

Keywords: Forest birds, insectivore, ecotourism, sustainable management

Potensi Simpanan Karbon pada Beberapa Tipe Agroforestri Berbasis Kopi Robusta di Desa Rowosari, Jember

2023-09-26T13:24:30+07:00

The phenomenon of forest destruction can be found in various regions of the world through deforestation activities and has an impact on environmental sustainability. One of the impacts caused by climate change due to deforestation is at the same time threatening the activities of the agricultural sector, namely the sustainability of food production. Agroforestry is a sustainable agricultural system by cultivating tree components with agricultural plant species. The role of trees in agroforestry is thought to have similarities with the potential for carbon sequestration in forests through carbon storage sources on the ground surface. Agroforestry models based on robusta coffee (Coffea canephora) are found in Indonesia, both with simple agroforestry and complex agroforestry types. This research was conducted in Rowosari Village, Sumberjambe District, Jember Regency on several types of robusta coffee-based agroforestry. Based on the results of the study, simple agroforestry has a potential for carbon storage of 73.89% greater than complex agroforestry. The total potential for carbon storage in simple agroforestry is 166.55 tonnes/ha, while in complex agroforestry it is 58.86 tonnes/ha. The potential for carbon storage in agroforestry is affected by the composition of the tree stands.

Keywords: agroforestry, biomass, carbon storage

Keanekaragaman Jenis Arthropoda Tajuk di Hutan Mangrove Ciletuh, Sukabumi, Jawa Barat

2023-09-26T13:24:26+07:00

This research was conducted in the mangrove areas Ciletuh, Sukabumi managed by Pokmasi Mandrajaya. Ciletuh mangrove area is occupied by mixed mangrove tree species. Mangrove is the habitat of a wide variety of arthropods and other canopy arthropods. Arthropods are one of the biotic components that play a role in multiple levels in an ecosystem. The existence of arthropods can be an indicator of the balance of the ecosystem. The purpose of this study was to estimate the abundance and diversity of arthropods in the canopy of Ciletuh mangrove areas. The study was conducted by analyzing vegetation, canopy arthropod catching by the beating-tray method, measurements of temperature and humidity. The results showed that canopy arthropods at 6 mangrove zoning in Ciletuh mangrove forest consisting of 21 families. Family that dominate in Ciletuh mangrove forest are family Formicidae in the class of Insecta and family Salticidae in the class of Arachnida.

Keywords: arboreal arthropods, beating-tray, Ciletuh, mangrove

Systematic Review: Sejarah Persebaran dan Konservasi Famili Dipterocarpaceae melalui Perbanyakan Vegetatif

2023-09-26T13:24:22+07:00

Dipterocarpaceae dominate plants of tropical forests, and their wood is exploiting until it's been rare plants. Conservation through generative propagation has several problems, and vegetative propagation then being as an alternative. This study has two purposes that to understand the history of distribution of Dipterocarpaceae and do research about the development of vegetative propagation techniques that apply for Dipterocarpaceae. This study was using a systematic review method. Commonly, vegetative propagation techniques that have been applied are cuttings and culture in vitro but other vegetative techniques have not to use yet. Research on the vegetative propagation of Upuna and Parashorea has not been available. Cutting is the most propagation technique used and has a good effect on several species of Dipterocarpaceae. Culture in vitro techniques have been used for several genus and need further research.

Keywords: conservation, dipterocarpaceae, rare tree, systematic review, vegetative propagation

Model Agroforestri di Desa Leimea Sorinbalo Kabupaten Ermera Timor-Leste

2023-10-04T13:40:42+07:00

Agroforestry is the management of optimal and sustainable land use, by combining forestry and agricultural activities in the same land management unit by taking into account physical, social, and economic environmental conditions. This research was carried out in Leimea Sorinbalo village, Ermera Regency, East Timor, in March and May 2021 using qualitative and quantitative methods. The data used in this study are data obtained directly from agroforestry farmers in Ermera District, East Timor by means of direct interviews with 30 respondents (farmers) regarding the agroforestry model with the help of questionnaires. Analysis of economic data using the three criteria of NPV, BCR and IRR, social and ecological analysis of Descriptive qualitative. The results of the financial analysis showed that the NPV was the results of the financial analysis showed that the NPV was $ 220,184.66, the BCR was 28.7 and the IRR was 35 %. The results the ecological analysis showed that the biodiversity is vanilla, chocolate, Agarwood teak, gamal, jackfruit, orange etc, and social analysis showed that the Local institutions and culture are studies on social aspects. The central institution that serves as a driving force for farmers The non-formal institution in Leimea Sorinbalo village is recorded only as a customary institution that maintains the preservation of agroforestry land through the application of customary laws.

Key words: Agroforestry model, ecologicalm, economy, social