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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management FORESTA Jurnal Geografi Jurnal Serambi Engineering Sarwahita : Jurnal Pengabdian Kepada Masyarakat Journal of Sylva Indonesiana ABDI MOESTOPO: Jurnal Pengabdian pada Masyarakat Prosiding Konferensi Nasional PKM-CSR

Bejo Slamet

Faculty Of Forestry, Universitas Sumatera Utara, Medan, Indonesia 20155

Author-ID : 3700159

Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Nursing Public Health Social Sciences Other

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Stemflow Variability in Tropical Lowland Forest Landscape Transformation System: Case Study at Jambi Province, Indonesia Bejo Slamet; I Nengah Surati Jaya; Hendrayanto Hendrayanto; Suria Darma Tarigan
Jurnal Manajemen Hutan Tropika Vol. 21 No. 1 (2015)
Publisher : Institut Pertanian Bogor (IPB University)

Land cover change may cause change on the hydrological function of an area, particularly on the distribution of rainfall that reach land surface. This study describes the characteristic of stemflow occurred within 4 ecosystems in Jambi, namely logged forest, jungle rubber, rubber plantation, and oil palm plantation. The main objective of the study was to measure the variability of stemflow in those 4 ecosystems. The main data used were rainfall and stemflow data that were directly measured for 5 months. The derived regression equation model showed that stemflow increase with rainfall depth. It was shown that values of stemflow amongs plantation types was varied indicated by the difference of its regression coefficients, as well as variations of the rainfall at the same transformation type. The percentage of stemflow to rainfall was ranging from 0.04–0.21% for rubber, 0.10–0.38% for jungle rubber, 0.28–0.54% for forest, and 0.84–3.07% for oil palm. The oil palm provided the highest stemflow volume compared to other land cover type. The uniqueness of oil palm canopy may cause the drainage of water from the canopy to the main stem that indicated by highest stemflow funneling ratio value. Rainfall significantly affected the amount of stemflow compared with the characteristics of the plant.

Fungsi Hidrologi Kebun Karet (Hevea brasiliensis Muell. Arg) dalam Mereduksi Besaran Curah Hujan Bersih (Hydrological Function of Rubber Plantation (Hevea brasiliensis Muell. Arg) to Reducing the Magnitude of Net Rainfall) Bejo Slamet; Achmad Siddik Thoha; Riki Jaya Dinata
FORESTA Vol 1, No 2 (2012): Indonesian Journal Of Forestry Volume 1 No. 2 (Juli 2012)
Publisher : FORESTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (724.796 KB)

Forest conversion resulted in loss of various forest functions, mainly the hydrological function changes. Mostly of the conversion of forests were to be oil palm and rubber plantations. Rubber plantation although an artificial ecosystem but had the similarity to forest condition. The purpose of this research was to examine the role of rubber plantation to reducing net rainfall that reached the plantation ground through the interception loss mechanism. Water volume balance was used to measure the interception loss.The results showed that the interception on the rubber plantation increased with the increasing of rubber age. Through fall tend to decreased with the increasing of rubber age were 60.56%, 53.62% and 43.79% of the total precipitation for 10 years, 15 years and 25 years of age respectively during the research period. The percentage of stem flow was 5.98% 7.94%, and 4.39% of total precipitation for 10 years, 15 years and 25 years of age respectively. The percentage of interception on rubber plantation for 10 years, 15 years and 25 years were 331.76 mm (19.6%), 428.73 mm (25.3%), and 545.79 mm (51.81%) of the total rainfall (1053.3 mm) respectively. Rubber plantation had good potency to reducing the net rainfall that reached the ground. This condition also informed that rubber plantation could reduce the risk of floods occurrence.Key words: rubber plantation, net rainfall, interception, through fall, stem flow

Pelatihan Pembuatan Produk Kerajinan Berbahan Cabang Kayu Mangrove Ridwanti Batubara; Mohammad Basyuni; Apri Heri Iswanto; Bejo Slamet; Arida Susilowati; Deni Elfiati; Mariah Ulfa; Ryzki Pebriansyah
ABDI MOESTOPO: Jurnal Pengabdian Pada Masyarakat Vol 4, No 01 (2021): Januari 2021
Publisher : Universitas Prof. Dr. Moestopo (Beragama)

Cabang kayu mangrove merupakan limbah kayu yang bisa dimanfaatkan untuk berbagai produk kerajinan kayu. Tujuan dari kegiatan pelatihan yang dilakukan adalah melatih masyarakat membuat kerajinan berbahan cabang kayu mangrove dan memberikan pengetahuan tentang sifat-sifat dasar cabang kayu dalam pengolahannya. Metode pelatihan meliputi pemberian materi pelatihan, praktek langsung pembuatan kerajinan dan diskusi. Hasil pelatihan dari praktek tiap-tiap kelompok membuat kerajinan dari cabang kayu mangrove yang berbeda-beda, antara lainn aneka gantungan kunci, cup lampu dan tongkat kayu. Setelah pelatihan peserta bertambah pengetahuan tentang sifat-sifat dasar cabang kayu dan produk-produk kerajinan yang dibuat dari cabang kayu.

PENGOLAHAN LIMBAH TANAMAN MANGROVE SEBAGAI BAHAN PEWARNA ALAMI PADA PRODUK ECOPRINT DI DESA LUBUK KERTANG KABUPATEN LANGKAT, SUMATERA UTARA Iwan Risnasari Risnasari; Deni Elfiati; Arif Nuryawan; Harisyah Manurung; Mohammad Basyuni; Apri Heri Iswanto; Erman Munir; Bejo Slamet; Arida Susilowati
Bahasa Indonesia Vol 18 No 01 (2021): Sarwahita : Jurnal Pengabdian Kepada Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/sarwahita.181.7

Lubuk Kertang Village has the potential for mangrove ecotourism which is currently being developed as a source of income for the community's economy apart from fishermen and agriculture. Even the mangrove ecosystem in Lubuk Kertang Village has become a tourist icon for Langkat. Apart from mangrove ecotourism, Lubuk Kertang is also unique with its processed mangrove products in the form of foods such as mangrove dodol, jeruju crackers, and mangrove syrup. However, productivity is constrained by the availability of mangrove fruit which depends on the season. Moving on from this, it is necessary to carry out community service activities to provide education about the potential and benefits of mangrove waste in the form of stems, twigs, leaves, and fruit from other aspects. Namely that apart from being processed as food material, mangrove waste can also be processed into other high-value products, one of which is a natural dye. Activities carried out are in the form of socialization and education about the potential and benefits of mangrove waste as a natural coloring agent to the manufacturing process. Furthermore, the natural dyes that have been produced are applied in the coloring process through the ecoprint workshop/training. The media used are cloth/textiles, paper, sheepskin, and ceramics (mugs). The response of the community, represented by women from independent women farmer groups as well as some students of Madrasah Tsanawiyah and the Village Head was very good. Even some mothers from independent women farmer groups routinely continue to make ecoprints in the form of cloth, pashmina, and t-shirts. Their products have also been included in exhibition activities in Lubuk Kertang Village. The Head of Lubuk Kertang Village hopes that there will be sustainability from independent women farmer groups to make ecoprint products to increase income from the Lubuk Kertang community. Abstrak Desa Lubuk Kertang memiliki potensi ekowisata mangrove yang saat ini terus dikembangkan sebagai salah satu pemasukan sumber pendapatan ekonomi masyarakat selain nelayan dan pertanian. Bahkan ekosistem mangrove di Desa Lubuk Kertang menjadi ikon wisata Langkat. Selain ekowisata mangrove, Lubuk Kertang juga khas dengan produk olahan mangrovenya berupa makanan seperti dodol mangrove, kerupuk jeruju dan sirup dari buah mangrove. Namun produktivitasnya terkendala oleh ketersediaan buah mangrove yang tergantung dengan musim. Beranjak dari hal tersebut maka perlu dilakukan kegiatan pengabdian pada masyarakat untuk memberikan edukasi tentang potensi dan manfaat limbah tanaman mangrove baik berupa batang, ranting, daun dan buah dari aspek yang lain. Yaitu bahwa selain dapat diolah sebagai bahan pangan limbah tanaman mangrove juga dapat diolah menjadi produk bernilai tinggi lainnya, salah satunya sebagai pewarna alami. Kegiatan yang dilakukan adalah dalam bentuk sosialisasi dan edukasi tentang potensi dan manfaat limbah tanaman mangrove sebagai zat pewarna alami hingga proses pembuatannya. Selanjutnya pewarna alami yang telah dihasilkan diaplikasikan dalam proses pewarnaan melalui kegiatan workshop/pelatihan ecoprint. Media yang digunakan adalah kain/tekstil, kertas, kulit domba dan keramik (mug). Respon masyarakat yang diwakili oleh ibu-ibu kelompok tani wanita mandiri serta beberapa siswa Madrasah Tsanawiyah dan Kepala Desa sangat baik. Bahkan beberapa ibu-ibu dari kelompok tani wanita mandiri secara rutin terus membuat olahan ecoprint berupa kain, pashmina dan kaos. Hasil produksi mereka juga telah diikutserakan pada kegiatan pameran di Desa Lubuk Kertang. Kepala Desa Lubuk Kertang mengharapkan adanya keberlanjutan dari kelompok tani wanita mandiri untuk membuat produk-produk ecoprint dalam rangka menambah pemasukan dari masyarakat Lubuk Kertang.

Carbon Emissions and Sequestration Due to Land Conversion In The Padang Watershed, North Sumatera (incomplete) Suci Arisa Purba; Bejo Slamet; Abdul Rauf
Jurnal Serambi Engineering Vol 6, No 1: Januari 2021
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v6i1.2510

Land conversion activities cause changes in the area of vegetation and carbon storage in the air. These changes can lead to emissions (reduction of carbon stocks) or sequestration (addition of carbon stocks). This study aims to calculate stored carbon in the Padang watershed in 2009 and 2019 and to determine the dynamics of emissions and carbon sequestration due to land conversion in the Padang watershed, North Sumatra Province from 2009 to 2019. The method used in this research is spatial data processing using software Arc Gis. Processing, interpretation and classification of land cover are obtained from land cover data for 2009 and 2019 from the Ministry of Environment and Forestry. Furthermore, the analysis of emissions and carbon sequestration in the Padang watershed was carried out using the REDD Abacus SP software. The results showed that the total carbon stored in 2009 was 5,168,464.09 tons. Meanwhile, the total carbon stored in 2019 was 5,150,784.81 tons. This means that there is a decrease or carbon emission during the 2009-2019 period of 17,679.28 tons. The total net emissions and sequestration that occurred in the Padang watershed due to changes in land use from 2009 - 2019 were 22,851,751.43 tonnes CO2-eq / year and 3,100,199.00 tonnes CO2-eq / year, respectively. Efforts to reduce emissions include planting and developing forests and community-based forest management.

Analisis Sebaran Spasial Kerentanan Longsor Sebagai Upaya Mitigasi Bencana di Kecamatan Berastagi Kabupaten Karo Provinsi Sumatera Utara Dinda Ayu Pertiwi Sitorus; Slamet Bejo; Said Muzambiq
Jurnal Serambi Engineering Vol 6, No 3 (2021): Juli 2021
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v6i3.3040

Kabupaten Karo has several areas that have the potential to occurrence of a landslide.Therefore, the mitigation of landslide disaster is very important, it has long-term negative impacts on humanity and the environment. This study attempts to analyze the distribution of vulnerability landslides in Berastagi mitigation and management and provide the right environment. The causes of a movement occur landslides in Berastagi is the state of a steep slope around 35, 55 % - percent of lithological building materials / unstable material among other volcanic breccias and, riodasit tufa and the factor triggering rainfall andinfiltration water . The research method was descriptive , whereas scoring with Shapefile (SHP) data in 2019 was based on the 2004 Puslittanak. The results of the field are the weightings of the respective parameter with overlay uses arcgis 10.6 software. The result showed that the DouluVillage, SempaJaya Village, Raya Village, as well as Tambak Lau Mulgap II in the Berastagi District have a high vulnerability to landslides. Thus, recommendations for mitigation of calamity , by revegetation erosion including planting crops.

Kajian Tingkat Bahaya Erosi Pada Berbagai Tipe Penggunaan Lahan di Kecamatan Merdeka Kabupaten Karo Parlin Hotmartua Putra Pasaribu; Abdul Rauf; Bejo Slamet
Jurnal Serambi Engineering Vol 3, No 1 (2018)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v3i1.357

The purpose of this study is to determine the level of erosion in various types of land use in Merdeka District. This research used erotic prediction analysis survey method with Universal Soil Loss Equation (USLE) method. The parameters measured in this research are erosivitas, erodibility, length and slope of the slope, cover vegetation, conservation measures, soil effective depth, soil density. The techniques of collecting and analyzing the research data are: making of land unit, field data collection, rainfall data analysis, soil analysis, and map analysis. The results showed that the rate of erosion in Merdeka District was 13,250,049 ton / ha / year with average erosion rate reached 1,261,909 ton / ha / year. The highest erosion rate was found in land use area of 2,959,018 tons / ha / year, while the lowest erosion was found on the use of settlement land of 29,810 tons / ha / year.

Pelatihan Pembuatan Produk Kerajinan Berbahan Ranting Kayu Mangrove Ridwanti Batubara; Mohammad Basyuni; Apri Heri Iswanto; Bejo Slamet; Arida Susilowati; Deni Elfiati; Mariah Ulfa; Ryzki Pebriansyah
Prosiding Konferensi Nasional Pengabdian Kepada Masyarakat dan Corporate Social Responsibility (PKM-CSR) Vol 3 (2020): Peran Perguruan Tinggi dan Dunia Usaha Dalam Pemberdayaan Masyarakat Untuk Menyongsong
Publisher : Asosiasi Sinergi Pengabdi dan Pemberdaya Indonesia (ASPPI)

Ranting kayu mangrove sampai saat ini merupakan limbah yang belum termanfaatkan. Limbah ranting ini sangat potensial untuk dimanfaatkan sebagai bahan baku kerajinan. Tujuan dari kegiatan pelatihan ini adalah melatih masyarakat tentang pembuatan kerajinan berbahan ranting kayu mangrove dan memberikan pengetahuan tentang sifat-sifat pengerjaan kayu khususnya ranting sebagai bahan baku kerajinan. Metode pelatihan meliputi pemberian kuisioner dan materi pelatihan, diskusi dan praktek langsung pembuatan kerajinan. Hasil pelatihan dari praktek masyarakat membuat kerajinan dari ranting kayu mangrove antara lain pas bunga, bonsai, miniatur saung, miniatur kursi dan tempat tissue. Pelatihan ini merupakan pelatihan pertama yang diikuti oleh peserta terkait pelatihan pembuatan kerajinan. Peserta pelatihan mendapatkan pengetahuan tentang sifat-sifat pengerjaan kayu dan produk-produk kerajinan berbahan ranting kayu. Dampak dari kegiatan ini adalah masyarakat menjadi terampil membuat kerajinan berbahan ranting kayu mangrove.

Editorial of the First Edition Journal of Sylva Indonesiana Bejo Slamet; Arif Nuryawan
Journal of Sylva Indonesiana Vol. 1 No. 01 (2018): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

This editorial is an opening remark of the first edition Journal of Sylva Indonesiana (JSI) containing the growth and development of the journal managed by Faculty of Forestry Universitas Sumatera Utara (“Fahutan USU”). In the first stage, “Jurnal Ilmiah Pertanian Kultura” published by Faculty of Agriculture USU has been targeted by faculty member of “Fahutan USU” for dissemination of their research results. This journal has been accredited by Directorate General of Higher Education in 2003 consequently its scope become specific, forestry science did not include therein. Hence, at that time, Program Study of Forestry Science under management of Faculty of Agriculture USU initiated the issuing of Peronema Forestry Science Journal in 2005 in order to accommodate scope of forestry science. Unfortunately the service and production of this journal become stagnant because most of the editorial staff pursued higher education in outside Medan city and the funding for publishing and printing vanished. In 2012, with the new spirit, Program of Forestry Science re-issued the new journal called “Foresta” Indonesian Journal of Forestry. It was a pity, the production process of this journal discontinued regarding to no submission of the manuscripts. All of the research results of undergraduate students of Program Study of Forestry Science have been uploaded into Peronema Forestry Science Journal in online version since 2014. In connection with establishment of organization structure of Faculty of Forestry completely, the publishing of JSI has been started in 2018 even though the editorial works of this journal has been begin since 2017, comprise call of paper, blind-review process, correspondence with the authors, layout and editing, including upload in the journal website. Supply of the manuscripts is provided not only from undergraduate research results of Faculty of Forestry’s students but also from the outside. With the commitment of the funding from the Faculty of Forestry USU, hopefully JSI can reach the target as the national accredited journal and it can achieve the status to be a reputation journal in the field of forestry in the future.

ANALYSIS OF THE NEED FOR GREEN OPEN SPACE BASED ON OXYGEN REQUIREMENT IN MEDAN CITY Wahyu Fahreza; Bejo Slamet; Delvian Delvian
JURNAL GEOGRAFI Vol 14, No 2 (2022): JURNAL GEOGRAFI
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jg.v14i2.33363

Medan City is a Metropolitan City with a high population growth rate, in line with the growth rate of regional development. These problems spur the occurrence of land use change. The need for land for residential locations, transportation infrastructure facilities and others will impact the reduced availability of green open space as an oxygen producer in the city of Medan. This study aims to examine the distribution of green open space, estimate the need and adequacy of green open space, and develop directions for developing green open space. This research was conducted from January to completion, using the method of interpretation and analysis of spatial data from quick bird images taken from the SAS Planet application, and calculations were carried out using the Gerarchic formula to determine oxygen demand. The results showed that the area of green open space in Medan City was 86.27 km2 (33%), and non-vegetated/non-green open space was 178.83 km2 or equivalent to (67%) of the Medan City area of 265.10 km2. The oxygen plants produce in green open spaces is 4,367,418.75 kg/day. Meanwhile, the oxygen demand in Medan City is 5,150,425.98 kg/day, and when converted into green open space, it is 101.74 km2. Directions for the development of green open spaces can be carried out in several ways, namely managing green spaces, synergizing the natural and artificial environment, implementing a low-cost transportation system, empowering population policy strategies, utilizing water and energy resources, maintaining environmental health based on city planning that favours development principles sustainable.Keywords: Green open space, Oxygen, Quickbird Image, Medan

Co-Authors Abdul Rauf Abdul Rauf Achmad Siddik Thoha Apri Heri Iswanto Arida Susilowati Arif Nuryawan Delvian Delvian Deni Elfiati Dinda Ayu Pertiwi Sitorus Erman Munir Harisyah Manurung Hendrayanto . I Nengah Surati Jaya Iwan Risnasari Risnasari Mariah Ulfa Mohammad Basyuni Mohammad Basyuni Parlin Hotmartua Putra Pasaribu Ridwanti Batubara Riki Jaya Dinata Ryzki Pebriansyah Said Muzambiq Suci Arisa Purba Suria Darma Tarigan Wahyu Fahreza

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