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Hubungan Dominansi Pohon dengan Temperature Humidity Index (Thi) Di Hutan Kota Babakan Siliwangi Bandung Jawa Barat Solihat, Raizal Fahmi; Nurfajri, Muhamad Elvan
Wanamukti: Jurnal Penelitian Kehutanan Vol. 21 No. 2 (2018)
Publisher : Fakultas Kehutanan Universitas Winaya Mukti

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Physical development in the city of Bandung which is increasing causes a decrease in green open space. Babakan Siliwangi Bandung City Forest is one of the green open spaces so it is necessary to know the correlation between tree dominance and the Temperature Humidity Index (THI) value in the formation of micro climates. The object research is to determine the relationship between tree dominance and THI. The method by vegetation analysed, measuring temperature and humidity. The results of research are: 1) Comfort index (THI) in the Babakan Siliwangi City Forest Park in Bandung in August 2017 is relatively comfortable <26 THI. 2) The correlation value of tree dominance with THI is -0.14 which means that there is no relationship between the dominance value and THI.Â Keywords : Tree, Forest urban, THI, BandungÂ

Tree Vegetation Diversity In The Natural Reserve Of Jagat Mountain Sumedang Sri Wilujeng; Raizal Fahmi Solihat; Reni Anggraini
International Journal of Advanced Multidisciplinary Vol. 2 No. 4 (2024): International Journal of Advanced Multidisciplinary (January-March 2024)
Publisher : Green Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/ijam.v2i4.473

Mount Jagat is a 133.64-hectare nature reserve area that is directly adjacent to the village and community agricultural land. The designation and management of nature reserves aim to conserve biodiversity, prevent species extinction, protect the forest as a life-support system, and sustainably utilize biodiversity. The threats posed by anthropogenic activities in the Mount Jagat area indicate the need for an inventory and analysis of species diversity, especially tree vegetation, as a first step for conservation. Data collection was carried out using nested quadrats which were placed systematically based on the Land Mapping Unit (LMU). The quadrats were 20 m x 20 m for trees, 10 m x 10 m for poles, 5 m x 5 m for saplings, and 2 m x 2 m for seedlings. The data were then analyzed using Family Importance Value (FIV), Importance Value Index (IVI), Shannon's Diversity Index (H'), and global conservation status by the International Union for Conservation of Nature (IUCN). There are 78 species from 32 families found in the study area. The results showed that the highest FIV for trees was the Moraceae family, 15.43%. The highest FIV for polishes and saplings were in the family Euphorbiaceae with 20.65% and 23.60% respectively. The highest FIV at the seedlings level was the Lauraceae family at 28.47%. Two species were found that had IVI above 10% in almost every growth stage, namely Machilus rimosa (Blume) Blume. and Orophea hexandra Blume. Machilus rimosa (Blume) Blume. found at the tree, pole, sapling, and seedling levels. Orophea hexandra Blume. found at the pole, sapling, and seedling levels. The H' values for the stages of tree growth, polishing, sapling, and seedling were 1.71, 1.63, 1.47, and 1.39, respectively, included in the moderate diversity category. Globally, there are 2 species categorized as vulnerable (VU) and 1 species near threatened (NT) based on IUCN data.

Penyuluhan Pentingnya Menjaga Hutan Konservasi Dengan Pelibatan Remaja Desa Ciwidey Melalui Pembentukan Youth Forest Guardians Solihat, Raizal Fahmi; Purwanto, Asep; Widodo, Prasetyo; Luth, Fahriza; Tan, Ishak
Jurnal Pengabdian Kepada Masyarakat (JPKM) TABIKPUN Vol. 5 No. 2 (2024)
Publisher : Faculty of Mathematics and Natural Sciences - Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpkmt.v5i2.163

Jawa Barat merupakan daerah rawan longsor, banjir dan lainnya. Kondisi alam ini memprihatinkan jika berlanjut sampai ke generasi berikut. Agen perubahan remaja perlu dipersiapkan untuk membawa masa depan hutan yang berkelanjutan. Fakultas Kehutanan Universitas Winaya Mukti melakukan pengabdian terhadap 43 remaja. Tema pengabdian adalah Kelestarian Hutan yang dilaksanakan pada 28 November 2023 – 23 Maret 2024 di Desa Ciwidey, Kecamatan Ciwidey, Kabupaten Bandung. Pelaksanaan pengabdian ini terdiri dari pemberian beberapa materi seperti pengenalan dasar-dasar hutan dan kehutanan, pemanfaatan hutan berkelanjutan, dasar-dasar konservasi, dasar-dasar organisasi kepemimpinan, dan praktik pengenalan flora dan fauna di Desa Ciwidey. Pengabdian ini memperoleh tanggapan positif dan meningkatkan pemahaman peserta sebesar 50,4%. Keberhasilan ini secara resmi membentuk komunitas Youth Forest Guardians, yang bertugas untuk menjaga kelestarian alam di Desa Ciwidey.

Produktivitas Getah Pinus (Pinus merkusii) pada Berbagai Diameter Batang (Studi Kasus di Hutan Lindung Gn Manglayang, BKPH Manglayang Barat Perum Perhutani Divre III Jabar Banten) Irawan, Guntur; Darliana, Ina; Solihat, Raizal Fahmi
Wanamukti: Jurnal Penelitian Kehutanan Vol. 27 No. 2 (2024)
Publisher : Fakultas Kehutanan Universitas Winaya Mukti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35138/wanamukti.v27i2.566

The object of research is to examine the effect of various diameter on the productivity of pine resin (Pinus merkusii) in the Gunung Manglayang Protected Forest. The research was conducted in the protected forest area of compartment 43G RPH Arcamanik BKPH Manglayang Barat, Perum Perhutani KPH Bandung Utara, using a Completely Randomized Design (CRD) with four diameter classes of trees: 20–25 cm, 30–35 cm, 40–45 cm, and 50–55 cm. Each diameter class consisted of 5 trees, with 5 repetitions of resin tapping. The results showed that pine resin productivity increased with the growth of stem diameter. The 20–25 cm diameter class produced 18.55 grams/tree/7 days, while the 50–55 cm diameter class produced 30.89 grams/tree/7 days. The analysis of variance (ANOVA) showed that tree diameter had a significant effect on resin productivity (Sig. = 0.000). The Duncan’s multiple range test further confirmed that the 50–55 cm diameter class yielded the highest resin productivity. In conclusion, the larger the stem diameter, the higher the resin productivity. Therefore, tapping should be carried out on trees with a minimum diameter of 20 cm to achieve optimal results without damaging tree growth.Keywords: Resin productivity, Pinus merkusii, various diameter

Carbon Reserve Potential, Carbon Dioxide Absorption Capacity, and Oxygen Release in The Conservation Forest of Kamojang, West Java Maulana Abdul Ghani, Dadang; Fahmi Solihat, Raizal; Wilujeng, Sri
Greenation International Journal of Engineering Science Vol. 1 No. 2 (2023): (GIJES) Greenation International Journal of Engineering Science (June 2023)
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijes.v1i2.90

This research aims to identify and measure the carbon reserve potential, carbon dioxide absorption capacity, and oxygen release of tree vegetation in the conservation forest area of Kamojang, West Java. The research method includes field data collection by measuring tree biomass and specific gravity analysis, using systematic sampling techniques to determine research plots. The results of the study indicate that the Cikaro and Cibeunying blocks have a potential carbon reserve of approximately 202,577 tons, a karbon dioxide absorption capacity of around 742,781 tons, and an oxygen release of about 540,132 tons. Tree species such as Pinus (Pinus merkusii), Kibeureum (Dystilium stellare), Manglid (Maglietia glauca), Puspa (Schima wallichii), and Ki Badak (Fagraea fragrans) contribute the most to the total carbon amount. This research provides essential information for the management of the Kamojang conservation forest area in forest management policies as a crucial carbon reserve source for climate change mitigation.

Carbon Reserve Potential, Carbon Dioxide Absorption Capacity, and Oxygen Release in The Conservation Forest of Kamojang, West Java Maulana Abdul Ghani, Dadang; Fahmi Solihat, Raizal; Wilujeng, Sri
Greenation International Journal of Engineering Science Vol. 1 No. 2 (2023): (GIJES) Greenation International Journal of Engineering Science (June 2023)
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijes.v1i2.90

This research aims to identify and measure the carbon reserve potential, carbon dioxide absorption capacity, and oxygen release of tree vegetation in the conservation forest area of Kamojang, West Java. The research method includes field data collection by measuring tree biomass and specific gravity analysis, using systematic sampling techniques to determine research plots. The results of the study indicate that the Cikaro and Cibeunying blocks have a potential carbon reserve of approximately 202,577 tons, a karbon dioxide absorption capacity of around 742,781 tons, and an oxygen release of about 540,132 tons. Tree species such as Pinus (Pinus merkusii), Kibeureum (Dystilium stellare), Manglid (Maglietia glauca), Puspa (Schima wallichii), and Ki Badak (Fagraea fragrans) contribute the most to the total carbon amount. This research provides essential information for the management of the Kamojang conservation forest area in forest management policies as a crucial carbon reserve source for climate change mitigation.

Populasi Sonokeling (Dalbergia latifolia Roxb) di Cagar Alam Gunung Jagat Sumedang Wilujeng, Sri; Fahmi Solihat, Raizal; Darliana, Ina
Rekayasa Vol 18, No 2: Agustus, 2025
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v18i2.29456

Rosewood (Dalbergia latifolia Roxb.) is a tree species with high economic value. The latest data on the global rosewood population was reported in 2020 to be in a vulnerable state of extinction, due to exploitation and regeneration constraints. The initial step in analyzing to restore and manage the existence of a tree species in an area is to observe the population density, population distribution patterns and determine associated plants. The sampling technique was carried out by determining a quadrant of 20 m x 20 m with 37 sampling units. The average density parameters of rosewood per plot were analyzed descriptively, the distribution pattern of rosewood populations was analyzed using the Standardized Morisita Index and the determination of the type of association between rosewood and other species was obtained through the Chi-square Test and Percent Co Occurrence. The results showed that there was a decrease in rosewood density per plot from the seedling level to the tree level. The sharpest decline occurred at the seedling level to the sapling level. The analysis of the rosewood distribution pattern showed a clumped pattern with a Standardized Morisita Index of 0.628. Analysis of rosewood association type, showed that 34 tree species were not associated with rosewood, negatively associated with Orophea hexandra (Blume) and positively associated with Swietenia macrophylla King. Between rosewood and 9 other species has percent Co Occurrence = 0, which shows that there is no interdependence between rosewood and other species. This finding is an important basis for conservation and habitat management efforts, with a focus on the regenerative phase and interspecies relationships to support the sustainability of rosewood populations.

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