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All Journal FORESTA Jurnal Serambi Engineering Journal of Sylva Indonesiana Jurnal Ilmiah Edunomika (JIE) JURNAL ILMIAH GLOBAL EDUCATION Journal of International Conference Proceedings Global Forest Journal International Journal of Global Sustainable Research Serambi Engineering
Achmad Siddik Thoha
Fakultas Kehutanan, Universitas Sumatera Utara, Medan
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Other

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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)

Abstract

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
Analisis Kesesuaian Lahan Permukiman Menggunakan Sistem Informasi Geografis Di Kota Binjai Geniusmaniat Laia; Zulkifli Nasution; Achmad Siddik Thoha
Jurnal Serambi Engineering Vol 5, No 2 (2020)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v5i2.1919

Abstract

A determination location for residential areas was influenced by physical factors, accessibility, socioeconomics, existing land use conditions, etc. Binjai is a municipality that has the highest population growth and resulting in the development of settlement highest growth. It is necessary to analyze land suitability for settlement development that provides appropriate residential location direction to realize productive and effective land use by utilizing Geographic Information Technology (GIS). This study aims to analyze residential development direction in Binjai as well as determine potential location into a residential area by considering carrying land capacity, land use effectiveness, and productivity. The suitability land capacity analysis for settlements development results: Very High (ST) 2,616.12 Ha, High (T) 4,295.65 Ha, Medium (S) 2,332.15 Ha, Low (R) 465.67 Ha, and Very Low (SR) 65.16 Ha. Suitability effectiveness analysis for settlements development results: Very High (ST) 4,560.08 Ha, High (T) 2,636.54 Ha, Medium (S) 1,533.04 Ha, Low (R) 417.36 Ha, and Very Low (SR) 167.65 Ha. Conformity analysis productivity utilization for settlements development results; Very High (ST) 4,216.52 Ha, High (T) 2,036.35 Ha, Medium (S) 1,249.72 Ha, Low (R) 1,122.23 Ha, and Very Low (SR) 451.52 Ha.
Analisis Daerah Rawan Bencana Tsunami Terhadap Pemanfaatan Lahan Perumahan dan Permukiman Kota Gunungsitoli Berbasis Geospasial Junalisman Harefa; Zulkifli Zulkifli; Achmad Siddik Thoha
Jurnal Serambi Engineering Vol 5, No 1 (2020)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v5i1.1654

Abstract

Land-use pattern of Gunungsitoli municipality cannot be controlled yet, where land originally designated for the Local Protection Zone or the coastal green zone has been converted to function as built-up land for housing and settlement activities. Spatial Planning Law Number 26/2007, Regional Regulation No. 12/2012, and Presidential Regulation Number 51/2016 in Article (1) has regulated spatial layout and coastline. Research type used in this research is descriptive research with a qualitative-quantitative approach. This study aims to predict population growth in 2020-2039, land changes in 2010-2019 and distribution of tsunami prone areas analysis. The results of this study predict population growth in Gunungsitoli municipality for the next 20 years, 2020-2039, to 148.341 people. The biggest land use change / change analysis occurred in Gunungsitoli sub-district with a percentage of 25,38% of the total area of change in all Gunungsitoli sub-districts, and the smallest land use change’s percentage that occurred in Gunungsitoli West sub-district because this sub-district has a sloping and bumpy topography. The results of the tsunami disaster area analysis showed Gunungsitoli sub-district is the most extensive vulnerability impacted of 3.449 hectares. Subsequently followed by Gunungsitoli Idanoi sub-district, South Gunungsitoli sub-district and North Gunungsitoli sub-district.
Analisis Tata Ruang Pada Kawasan Bergambut Di Kecamatan Dolok Sanggul Kabupaten Humbang Hasundutan Edwar Darmansyah Pohan; Erwin Nyak; Achmad Siddik Thoha
Jurnal Serambi Engineering Vol. 9 No. 3 (2024): Juli 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Peatland conversion has become a serious issue in recent years. The dynamic between peatland protection and limited space for urban development is a strategic issue in spatial planning. This research aims to evaluate the spatial pattern planning of peatland areas in the 2018 Regional Spatial Plan of Humbang Hasundutan District. The focus of this research is a peatland area of 666.77 hectares. The method used in this research is descriptive qualitative with a spatial data exploration approach using ArGIS 10.8 application. The results show that the spatial pattern plan of peatland in 2018 has a mismatch in spatial use, non-peatland reaches 357.06 hectares (53.55%), most of which is used as fields/crops (39.10%) and settlements (3.04%). The extent of land rights reaches 118.47 hectares (17.77%), while land without land rights is dominated by swamp land use (32.96 hectares or 41.51%). Cultivated land has the largest share (62.72%) as a potential cultivation function. Improvements to the spatial pattern plan for peatlands have decreased in area by -295.84 hectares (-44.37%), which needs to be considered in the future revision of the Humbang Hasundutan District Spatial Plan, including the regulation of general zoning provisions.
Analisis Spasial Pengembangan Kawasan Air Terjun Janji Kabupaten Humbang Hasundutan Darmanto Silaban; Achmad Siddik Thoha; Muhammad Taufiq
Jurnal Serambi Engineering Vol. 9 No. 3 (2024): Juli 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Spatial-based tourism development planning can help various parties to develop tourism in Lake Toba, especially in villages in Humbang Hasundutan Regency. The purpose of this research is to spatially analyse the physical characteristics and level of suitability of Janji Waterfall tourism development to support tourism development plans. The data used in this study are administrative boundary maps, soil type maps, land cover maps, slope maps, coordinates of the location of attractions and tourism facilities. Spatial analysis using Geographic Information System tools with join-space and overlay methods were used to describe the physical characteristics of the area, accessibility conditions, tourism facilities conditions and the level of suitability for tourism development. Based on the physical characteristics of the area, Janji Waterfall has supporting aspects in the form of beautiful natural scenery in the form of water flow, hills, vegetation and lakes. Accessibility to the tourism areas is easy from different locations as good quality road access already exists. Many support facilities are built in flat areas and close to settlements. The site or location of the waterfall is mostly in the criteria for the suitability of the development area, which is quite suitable and very suitable. For future development plans, it is recommended that managers, village governments and local governments work together. Visitor safety needs attention as the potential danger of landslides and flash floods is a threat that needs to be anticipated.
THE ROLE OF WOMEN FARMERS' HUMAN RESOURCES IN PRODUCTION ACTIVITIES IN CORN FARMING IN KARO DISTRICT, NORTH SUMATRA PROVINCE Surbakti, Supriadi; Nasution, Zulkifli; Sihombing, Marlon; Thoha, Achmad Siddik
Journal of International Conference Proceedings Vol 7, No 1 (2024): 2024 ICPM Malaysia Proceeding
Publisher : AIBPM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32535/jicp.v7i1.2977

Abstract

The food crop commodity whose production continues to be increased to support national food needs is corn. Karo Regency is the largest corn producer in North Sumatra. In production activities on corn farming, the role ratio between the human resources of male farmers and female farmers is balanced, but the ratio of workers is more female farmers than male farmers. This research aims to analyze the role of female farmers' human resources in production activities and decision making in corn farming in Karo Regency. This type of research is a quantitative research method. The method for determining the research area was carried out purposively. The sampling method was carried out using Nonprobability Sampling using the Accidental Sampling technique. The data analysis method is in the form of qualitative and quantitative analysis based on the primary data and secondary data obtained. The research results show that the amount of labor provided by female farmers is higher than that of male farmers and the contribution of female farmers in decision making is very influential in production activities in corn farming in Karo Regency. Keywords: Human Resources, Women Farmers, Production, Corn Farming 
Community perception toward mangrove restoration program in Kampung Nelayan Seberang, Medan Thoha, Achmad Siddik; Onrizal; Agus Purwoko; Alfan Gunawan Ahmad; Tika Yuana Sari
Global Forest Journal Vol. 2 No. 02 (2024): Global Forest Journal
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/gfj.v2i02.15693

Abstract

Indonesia has the largest mangrove forests in the world. However, Indonesia is also listed as the largest contributor to loss of the world's mangrove forests. Good mangroves will support the lives of coastal communities and vice versa. Mangrove forests in the area of Kampung Nelayan Seberang, Medan Belawan and its surroundings were also degraded. Therefore, degraded mangrove forests need to be restored through mangrove restoration activities with the involvement of the surrounding community. This community service activity through the Assisted Village Program will carry out mangrove restoration activities with the people of Kampung Nelayan Seberang. The success of restoration activities is determined by good understanding of the mangrove ecosystem and the commitment of the community to be involved in restoring it. The objective of this study was to identify understanding related to mangrove ecosystems and community perceptions of its restoration efforts. Collecting data was carried out by interviewing respondents who represented the population. Descriptive analysis is used to describe the socio-economic conditions, understanding and perceptions of the community regarding ecosystems and mangrove restoration. Generally, respondents understand the role of mangrove forests and agree that mangrove restoration must be done together. Amount of 53 - 83% of respondents agreed and understood that mangrove restoration is important for life and has an impact on income, social and cultural life. The results showed that 60 - 90% of respondents around the restoration area need a rehabilitation program and are willing to be involved in a mangrove restoration program with the parties.
Spatial Analysis of Tourism Objects and Facilities in Simarjarunjung Natural Tourism Area, North Sumatra Province, Indonesia Ambarita, Rolasdo; Agus Purwoko; Thoha, Achmad Siddik
Journal of Sylva Indonesiana Vol. 6 No. 02 (2023): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsi.v6i02.9270

Abstract

North Sumatra is one of the provinces in Indonesia that has a wealth of natural resources in the form of natural beauty.  One place whose potential natural beauty stands out is the Simarjarunjung area, which is on the north side of Lake Toba. The purpose of this study was to analyze the spatial distribution of tourist objects, natural tourism amenities, and infrastructure in the Simarjarunjung nature tourism area. This research method uses spatial analysis. There are 11 tourist attractions located in the Simarjarunjung natural tourism area that have the potential to be utilized by the manager for natural tourism activities. My Maps technology from Google is used to facilitate access to information so that it is expected to have a positive impact. One of them is the promotion of tourist attractions so that they can be easily accessed by anyone through online networks. The availability of data on the distribution of tourist attractions, attractions and facilities / infrastructure resulting from this research is expected to be a means to be able to increase visitor access to find out information about tourism contained in Simarjarunjung tourist attractions. Each tourist attraction in the Simarjarunjung area has various attractions and tourist facilities, each of which is the attraction and uniqueness of each tourist attraction
Analisis Strategi Pengelolaan Sampah Berbasis Pengurangan (Reduksi) di Kecamatan Medan Helvetia Kota Medan Koilola, Farakh Yolanda; Hadinugroho, Dwi Lindarto; Thoha, Achmad Siddik
Jurnal Ilmiah Global Education Vol. 5 No. 2 (2024): JURNAL ILMIAH GLOBAL EDUCATION, Volume 5 Nomor 2, Juni 2024
Publisher : LPPM Institut Pendidikan Nusantara Global

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55681/jige.v5i2.2821

Abstract

This research aims to analyze reduction-based waste management strategies in Medan Helvetia District, Medan City. The method used is qualitative with a survey approach and using SWOT and AHP analysis. This research began by identifying waste reduction efforts that had been carried out by residents of Medan Helvetia District and then a Focus Group Discussion (FGD) was carried out which resulted in 3 activity targets to be developed, namely (1) strategies to increase community participation to join environmental care communities; (2) strategy to improve the performance of waste banks, and (3) strategy to implement the circular economy concept in waste management to support the improvement of the people's economy. Based on the results of the SWOT analysis, the appropriate strategy for realizing the first activity target is the integration of the waste management education program with the TP PKK work program as well as providing waste reduction information on social media and banners in each sub-district. The priority target for the second activity is placing outlets receiving segregated waste in strategic location in the sub-district as well as waste bank management training, and the third priority strategy target, namely partner collaboration and capital assistance as well as assistance with composter equipment to produce organic fertilizer. The results of the AHP analysis show that the priority strategy in waste management based on reduction is increasing community participation to join environmental care communities with a weight value of 0.446 with an inconsistency value of 0.00001. This research shows that to increase community participation, continuous education is needed to be able to sort organic and inorganic waste, as well as disseminate information and waste reduction campaigns on social media and banners in each sub-district.
Identification of the Potential for Development of the Rainforest Lodges Kedah Ecotourism Area, Gayo Lues District, Aceh Province Sulaiman Sulaiman; Achmad Siddik Thoha; Nurdin Sulistiyono
International Journal of Global Sustainable Research Vol. 2 No. 4 (2024): April 2024
Publisher : MultiTech Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59890/ijgsr.v2i4.1771

Abstract

Aceh Province's natural resource wealth is diverse, offering natural panoramas, flora and fauna, and rainforest areas with attractive attractions for both domestic and foreign tourists. Forestry-based ecotourism has the potential to become a leading sector in the tourism industry. This research aims to map potential attractions, amenities, and regional accessibility of the Rainforest Lodges Kedah ecotourism area in Gayo Regency Lues Aceh Province. The area has unique natural resources, including beautiful flora and fauna, clear river flow, and tourist activities such as nature viewing, facilities, research/education, and sports. The area can accommodate up to 1,642 people per day. The ecotourism development strategy is in the quadrant one (I) SWOT matrix, allowing for optimal utilization of existing opportunities and support for aggressive growth
Co-Authors Agus Purwoko Alfan Gunawan Ahmad Ambarita, Rolasdo Ardi, Rio Badaruddin Bejo Slamet Charloq Darmanto Silaban Dwi Lindarto Hadinugroho Edwar Darmansyah Pohan Erwin Nyak Farakh Yolanda Koilola Geniusmaniat Laia Hadinugroho, Dwi Lindarto Juliana, Asima Junalisman Harefa Koilola, Farakh Yolanda Mansor, Mashhor Marlon Sihombing Muhammad Taufiq Munthe, Mirian Jacquiline Nurdin Sulistiyono Onrizal Onrizal Riki Jaya Dinata Satia Negara Lubis Sembiring, Elfiyanti Simanungkalit, Chrissanty Sugianto Sulaiman Sulaiman Surbakti, Supriadi Tika Yuana Sari Uliwati, Elisa Zulkifli Nasution Zulkifli Nasution Zulkifli Zulkifli