Article Per Year (5 Year)
p-Index From 2021 - 2026
4.951
P-Index
This Author published in this journals
All Journal Bionatura Jurnal Ilmu Dasar Jurnal Natur Indonesia JBIO: jurnal biosains (the journal of biosciences) Tunas Geografi Jurnal Agrista Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter Peronema Forestry Science Journal Jurnal Ilmu-Ilmu Pertanian Indonesia Jurnal Agribisnis Indonesia (Journal of Indonesian Agribusiness) Journal of Degraded and Mining Lands Management Jurnal Geografi Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Serambi Engineering Journal of Sylva Indonesiana Jurnal Agrium Pelita Masyarakat Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Multidiciplinary Output Research for Actual and International Issue (Morfai Journal) Golden Ratio of Social Science and Education CONSEN: Indonesian Journal of Community Services and Engagement Innovative: Journal Of Social Science Research Rona Teknik Pertanian Global Forest Journal Journal of Environmental and Development Studies INTERNATIONAL JOURNAL OF FINANCIAL ECONOMICS (IJEFE) Biodiversitas Journal of Biological Diversity
Delvian
Faculty Of Forestry, Universitas Sumatera Utara, Durin Tunggal, Pancur Batu Regency, Deli Serdang, 20353, North Sumatra, Indonesia
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

Published : 70 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 70 Documents
Search

 2   3   4   5   6 
Eksplorasi Mikoriza pada Lahan Bekas Tambang Emas Masyarakat di Mandailing Natal Sahat A. Sihombing; Delvian Delvian; Deni Elfiati
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (408.69 KB)

Abstract

The mycorrhizal is affected by biotic and abiotic factor. The purpose of this research is to explore the mycorrhizal on the soil of former gold mine community in Mandailing Natal so that we know the types of native mycorrhizal of the area. The data got from this research used to helps land reclamation efforts by the application of mycorrhizal on land mine. This activity will improve the condition of the damaged environment or increase productivity of the land. This research use soil separating method to obtain spores and root coloring method to find out root colonization. Result from this research is 2 genus spores are found they are genus Acaulospora 5 types of spores / 10 g soil and genus Glomus 11 types of spores / 10 g soil. The percentage of mycorrhizal colonization on former gold mine community in  Mandailing Natal is revolve between 8,12% - 28,55% .Key words: Mycorrhizal, genus Acaulospora and genus Glomus, former gold mine land community
Presence of Arbuscular Mycorrhizal Fungi in Coastal Forest Based on The Salinity Gradients D Delvian
Jurnal ILMU DASAR Vol 11 No 2 (2010)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (135.532 KB)

Abstract

The role of arbuscular mycorrhizal fungi is very important in a coastal area with sandy soil, high salinity level and low available of phosphate. However, the salinity levels also affect the diversity and activities of mycorrhizal fungi. This research was aimed to learn about arbuscular mycorrhizal fungi in coastal forest based on the salinity gradients. The results demonstrated that spore density and percentage of mycorrhizal colonization decreased by increasing the soil salinity. The same effect was also showed on the observed spore types. Glomus was found as the dominant spore in the research area.
PENGGUNAAN ASAM HUMIK DALAM KULTUR TRAPPING CENDAWAN MIKORIZA ARBUSKULA DARI EKOSISTEM DENGAN SALINITAS TINGGI Delvian Delvian
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 9, No 2 (2007)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.9.2.124-129

Abstract

It has been reported that humic acid can increase plant growth and benefecial soil microbe population.   A glasshouse experiment was conducted to study the effect of humic acid on growth of host plant and sporulation of arbuscular mycorrhizal fungi under salt stress in trap pot culture. Trap cultures were maintenance at various salinity levels as according to field salinity.  Half of the pots received 2.5% humic acid and control treatment received no humic acid. Result of research indicate that humic acid  can increase growth of host plant and mycorrhizae sporulation at all salinity levels. Acaulospora  is highest   its spore production   followed by of Glomus and Gigaspora .
Sistem Pertanian Berkelanjutan Pada Lahan Dataran Tinggi di Kawasan Hulu DAS Deli Sumatera Utar Shanti Desima Simbolon; Zulkifli Nasution; Abdul Rauf; Delvian Delvian
Jurnal Serambi Engineering Vol 1, No 2 (2017)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v1i2.504

Abstract

DAS Deli merupakan salah satu DAS kritis di propinsi Sumatera Utara yang memerlukan penanganan sebagai lokasi sasaran rehabilitasi. Mata pencaharian sebagian besar penduduk pada lahan dataran tinggi di kawasan hulu DAS Deli adalah bertani. Mereka mengolah lahan pertanian sebesar 82% terutama pada desa-desa di DAS Deli bagian hulu. Keadaan ini menimbulkan kerawanan terhadap erosi dan banjir di daerah hilirnya bila pengelolaan lahan tidak disertai dengan upaya-upaya rehabilitasi lahan dan konservasi tanah dan air. Makalah ini membahas salah satu upaya pengembangan pertanian berkelanjutan berbasis agroekologi yang perlu ditekankan dalam mempertahankan dan meningkatkan produksi pertanian. Penjabarannya mencakup 4 dimensi yaitu dimensi sosial ekonomi, sumberdaya sebagai asset produksi dalam usahatani, peningkatan peranan masyarakat, dan program aksi/implementasi yang realistis. Usaha tani berbasis agroekologi dalam pengelolaan lahan dataran tinggi yang tepat guna dan tepat sasaran dapat memberikan keuntungan ekonomi dan melindungi lahan dan lingkungan secara simultan. Dengan demikian pembangunan pertanian secara berkelanjutan dapat terwujud.
Degradasi Zat Organik Pada Limbah Cair Industri Kelapa Sawit Oleh Mikroalga Hijau Elvitriana Elvitriana; Erman Munir; Delvian Delvian; Hesti Wahyuningsih
Jurnal Serambi Engineering Vol 1, No 2 (2017)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v1i2.497

Abstract

Penelitian ini bertujuan untuk mempelajari kemampuan mikroalga dalam mendegradasi zat-zat organik pada Palm Oil Mill Effluent (POME) sebagai upaya memperbaiki kualitas limbah cair industri kelapa sawit. Kultivasi mikroalga dilakukan untuk menurunkan zat organik (nutrien) dalam POME pada konsentrasi yang berbeda menggunakan pencahayaan dan aerasi terhadap pertumbuhan biomassa alga yang dihasilkan. Berdasarkan hasil penelitian menunjukan bahwa pertumbuhan mikroalga hijau terbaik dengan kandungan biomassa tertinggi diperoleh dalam kultur  konsentrasi 30 % dan pencahayaan 4x8 watt selama 8 jam, biomassa alga yang diperoleh adalah 1,20 g-BK/L. Proses metabolisme sel membuktikan bahwa mikroalga hijau mampu mendegradasi zat-zat organik (nutrien) dalam POME mencapai 40 - 80 % dengan menurunnya konsentrasi COD dan BOD. Hasil penelitian menyimpulkan bahwa mikroalga dapat digunakan sebagai salah satu alternative dalam pengolahan limbah cair industri kelapa sawit.
Potensi Aliran Permukaan dan Sedimentasi pada Drainase Alami Permukiman Pengungsi Erupsi Gunung Sinabung di Siosar, Kabupaten Karo Nius Abdi Ginting; Rauf Rauf; Delvian Delvian
Jurnal Serambi Engineering Vol 7, No 1 (2022): Januari 2022
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v7i1.3925

Abstract

Transformation from forest ecosystem to be residential and farming ecosystems generally causes changes and damages due to open land surface and groundwater run off which can decrease organic substances in that area. The research employs a survey method by comparing Watershed with forest, part of forest, and part of settlement as land covering and settlement with topographic boundaries in order to estimate the potency of groundwater run off surface. Primary data are collected by measuring discharge in field and measuring the parameter of water quality. Secondary data are collected from geographical position, history of Siosar forest, digital RBI map, meteorological data, and population statistic data. The result of research shows that deforestation for settlement increases water discharge of surface runoff and sedimentation especially in the rainy season. The quality of water in the forest area is relatively good whereas the quality of water in settlement is slightly polluted.
Pertumbuhan Dan Produksi Kedelai Varietas Anjasmoro Pada Tanah Salin Usnawiyah Usnawiyah; Delvian Delvian
Agrium Vol 9, No 1 (2012)
Publisher : Faculty of Agriculture, Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/agrium.v9i1.1269

Abstract

 Increased soybean production  is  competing with the extension of the  use of agricultural land for  non- agricultural needs. Therefore the future expansion of agricultural land can only use marginal lands such as peatlands, wetlands and tidal lands. This paper discusses the growth and production of soybean varieties Anjasmoro in saline environments. Varieties Anjasmoro have total leaf area and the percentage ratio of the canopy  which  is  not  significantly  different  from  the  other  varieties  tested  except  Kipas  Merah.  In  the production of components, seed weight Anjasmoro 100 seeds varieties including higher and statistically the same as the varieties Kipas Putih dan Kipas Merah
Vegetation and Species Diversity in a Mountain Region of Sipiso-piso, North Sumatra Ariasta Bereona Tarigan; Delvian Delvian; T Alief Aththorick
Budapest International Research and Critics Institute-Journal (BIRCI-Journal) Vol 5, No 3 (2022): Budapest International Research and Critics Institute August
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birci.v5i3.6833

Abstract

The mountain region of Sipiso-piso is located adjacent to the water catchment area in Lake Toba. The region is known to have a notable uniqueness in plant species diversity from the valley to the ridge of the mountain which is only inhabited by shrubs and less stands. However, near the top of the mountain, it was characterized by a dense forest community and diverse forest vegetation with unknown information. The purpose of this study was to determine the vegetation and species diversity in the Sipiso-piso mountain region. Vegetation observation in the field used a combination method between the line transect and quadratic plots. The study documented a total of 40 plant species, with 20 families and 23 species in the forest region; 9 families and 19 species in shrubland while 2 species were recorded in both plant communities. Based on the importance value index (IVI), the forest community was evenly dominated by certain species that in shrubland. Based on the diversity index, the diversity in the forest community was classified as moderately abundant for each structure, while the shrub community was classified as moderately abundant only in the seedling but lower in the sapling, pole and tree. The evenness in the studied region was categorized as low with a distinct of species similarity among forest and shrub community.
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

Abstract

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
Vegetation Analysis of Mount Sipiso-Piso Forest Area, Merek District, Karo Regency, North Sumatra Ariasta Bereona Tarigan; Delvian Delvian; T Alief Aththorick
Tunas Geografi Vol 11, No 2 (2022): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v11i2.39140

Abstract

Mount Sipiso-piso is an Old Volcanic Mountain and part of the Lake Toba Catchment Area (DTA). The location of the Forest on Mount Sipiso-piso is unique because the site of the Forest is at the top of Mount Sipiso-Piso. The area below the mountain is a dense Forest that stands in the peak area of Mount Sipiso-Piso has a role in maintaining water flows in the Mount Sipiso-Piso area, becoming a place for rainwater absorption, and maintaining ecosystem stability so that erosion or landslides do not occur in vulnerable areas. This study aimed to look at the diversity and evenness of Mount Sipiso-piso Forest vegetation types. Data analysis techniques include Important Value Index (INP), Diversity Index (H'), and Evenness Index (E). The results showed that 20 families and 23 plant species from 1539 individuals were found in the field. The Important Value Index (INP) indicates that different individuals dominate the forest community at each level. The index of the diversity of Mount Sipiso-Piso Forest vegetation is categorized as moderate in the saplings, poles, and trees class and the low category in the undergrowth, woody shrubs, and seedlings class. For the species evenness index, the category is expected in the undergrowth and seedling class, the medium type is in the woody shrub and tree class, and the high sort is in the sapling and pole class.Keywords: Sipiso-Piso Mountain, Forest, Vegetation, Diversity, Evenness. 
Co-Authors . Elvitriana . Rosmayati . Zulfan Abda Abda ABDUL RAUF Abdul Rauf ABDUL RAUF ABDUL RAUF ADRIAN HARTANTO Agree Hutami Sinaga AGUS PURWOKO Agustrisno, Agustrisno Alan Syahputra Simamora Alief Aththorick Ameilia Zuliyanti Siregar Ameilia Zuliyanti Siregar Annie N Hutagalung Ariasta Bereona Tarigan Ariasta Bereona Tarigan Arida Susilowati Arida Susilowati Iswanto Arrasyid, Nurfida Khairina Aulia, Dwira Nirfalini Aznawi, Andi Aznan Bejo Slamet Budi Utomo BUDI UTOMO Budi Utomo Ceriati Magdalena Simanjuntak D Elfiati D Elfiati, D Dendi Parasian Pane Deni Elfiati Deni Elfiati Deni Elfiati Deni Elfiati Diana Sofia Hanafiah Dianingrum, Tengku Edy Batara Mulya Siregar Elfiati, D. - Elfiati, Deni Elfiati ENDANG HILMI Erman Munir ESTHER SORTA MAULI NABABAN etti sartina siregar Fadhilah, Amanatul Fahriza Zuhri Fathiatul Rizkia Aulin Febri Yoanita Harahap Febri Yoanita Harahap Fikarwin Zuska Gita Nasrani Sembiring Hamdani Harahap Hamidah Hanum Helmud Putra Anas Hutasoit Heni Pujiastuti Henti Hendalastuti Rachmat Herna Sianipar Hesti Wahyuningsih Ichwana Ichwana Indirawati, Sri Malem Ipanna Enggar Susetya, Ipanna Enggar IRWANDI IRWANDI Isnen Fitri Jamson H Tampubolon Jeskiel Sipayung Jumilawaty, Erni Jumilawaty Juneith O S Nadeak Kansih Sri Hartini Kiking Ritarwan Lusi Astri Simamora M. Basyuni Manurung, Cristo Mori Romario Masitta Tanjung MASRIZAL SARAAN Ma’ruf Tafsin Mohammad Basyuni MOHD HASMADI ISMAIL Mohd Hasmadi Ismail MOHD NAZIP SURATMAN Mona Fhitri Srena Mubaraq, Alfian Mubaraq Muhammad Iko Pratama Mukhlis Nauly, Meutia Nauly Nelly Anna Netti Herlina Nini Rahmawati Nini Rahmawati Nius Abdi Ginting Oding affandi Oding Affandi Pulungan, Afran Rouzani Puput Sarah Purnama Sari Sagala R. Hamdani Harahap R. HAMDANI HARAHAP R. Hamdani Harahap RAHMAWATY RAHMAWATY Rahmawaty Rahmawaty RAHMAWATY RAHMAWATY RAHMAWATY RAHMAWATY Rahmawaty, Rahmawaty Rangkuti, Ahmad Baiquni Rauf Rauf Reza Dimas Putra Ria Pertiwi Sianturi RIDAHATI RAMBEY Ridwanti Batubara Risnasari, Iwan Risnasari ROBERT SIBARANI Ronald Pandapotan Marpaung Sahat A. Sihombing SECA GENDASECA Shanti Desima Simbolon Siahaan, Indri Marita Siahaan, Nelson Manumpak Sidabukke , Simon Sihotang, Krisda Fadila SIMON H. SIDABUKKE Simon Sidabukke Sinuraya, Sofyanurrazaq Sivaipram, Itchika Sivaipram Slamet, Bejo Slamet Solihin Solihin Sumono Sumono Suryanti Saragih Susilowati, Arida Susilowati T Alief Aththorick T. ALIEF ATHTHORICK T. Alief Aththorick Ternala Alexander Barus Ternala Alexander Barus Ternala Alexander Barus Usnawiyah Usnawiyah, Usnawiyah Wahyu Fahreza Wika Astuti Sagala Zulfansyah, Ichfan Zulfredi Zulfredi Zulkifli Nasution Zumar Halim Rambe