Journal of Environmental and Development Studies

Identification of Factors and Variables in Orangutan Habitat Conservation in Central Tapanuli Using DPSIR Approach

2025-01-06T13:53:47+07:00

The habitat of the Tapanuli orangutan remains under threat from deforestation, fragmentation, development, and hunting, with only 11,787.7 hectares left. Conservation efforts have not been optimal due to the lack of a systematic approach and synergy among stakeholders. A long-term, data-driven management model integrating social, economic, ecological, and policy aspects is yet to be developed. This study aims to develop a scenario model for conserving the habitat of the Tapanuli orangutan in Central Tapanuli Regency. The method used in this research includes a literature review conducted over one year (November 2022–November 2023), secondary data collection, field surveys, and the DPSIR framework as an analysis tool. Four scenarios were analyzed: Business as Usual (BAU), land conversion threats, area strengthening policies, and habitat rehabilitation. The model was validated using historical data to ensure the accuracy of the results. The findings indicate that, although national and regional policies exist to protect the Tapanuli orangutan, their implementation is often hindered by weak law enforcement, corruption, and resistance from local communities. Thus, protecting the habitat of the Tapanuli orangutan requires a more holistic approach, including enhanced monitoring, forest restoration, community education, the development of sustainable alternative livelihoods, and multi-stakeholder collaboration. Continuous evaluation and strengthening of science-based policies are essential to ensuring the long-term effectiveness of conservation efforts.

Spatial Analysis of the Distribution of Heavy Metals Pb and Cb in Well Water Around Terjun Landfill in Medan City

2025-01-06T14:17:43+07:00

The study analyzed the spatial distribution of lead (Pb) and cadmium (Cd) in well water around the Terjun Landfill in Medan City. The research aimed to determine Pb and Cd concentrations in dug and drilled wells, compare their levels, and assess the impact of proximity to the landfill's active zone. A total of 22 wells located 50–500 meters from the landfill were sampled using purposive sampling. Spatial analysis was conducted using GPS, while differences in Pb and Cd levels between well types were analyzed using a t-test (α = 0.05, CI 95%). Results showed that Pb concentrations in dug wells ranged from 0.0039 to 0.0379 mg/L, with the highest levels found near SG1 and SG4, indicating landfill influence. In contrast, Pb levels in drilled wells were lower (<0.0001 to 0.0158 mg/L) and primarily influenced by external sources. Cd concentrations ranged from 0.0008 to 0.0032 mg/L in dug wells and 0.0005 to 0.0102 mg/L in drilled wells, with contamination in drilled wells linked to external activities. Proximity to the landfill significantly affected Pb levels in dug wells but had no impact on drilled wells, while Cd levels were unaffected by distance in both well types. The findings suggest that transitioning from dug wells to drilled wells is essential to reduce heavy metal exposure and ensure safer water quality for residents.

The Condition of Coral Reefs Ecosystem in Poncan Gadang Island Sibolga City and Management Efforts

2025-01-06T14:21:17+07:00

Poncan Gadang Island is one of the islands in Sibolga City. The island is utilized by the community for various activities, such as beach tourism, underwater tourism and capture fisheries. This study aims to assess the coral reef condition of Poncan Gadang Island and provide recommendations for its management efforts. The research was conducted in February 2023 using the Underwater Photo Transect method to assess coral cover. The Underwater Photo Transect method was selected for its ability to provide permanent photographic records for further analysis, comparison over time and efficiency in capturing large- scale coral conditions. Management recommendations were analyzed using the SWOT analysis method. SWOT analysis was selected because provided a structured framework for management decision-making. The results indicated that the average percentage of live coral cover was 24.01%, classifying the coral reefs as damaged condition. This degradation is likely influenced by anthropogenic activities and environmental stressors. Based on the SWOT analysis, it is recommended that Poncan Gadang Island’s management address internal weakness to mitigate external threats. The SWOT analysis shows that management efforts should focus on addressing internal weaknesses, such as inadequate of local awareness and conservation policies to counteract external threats like unsustainable tourism practices and climate change. Implementing stricter tourism regulations, community- based conservation efforts and coral reef restoration for enhance reef resilience.

Accelerating Hydropower Investment for Economic Growth in North Tapanuli, Indonesia

2025-02-06T10:08:51+07:00

TThis study aims to analyze the influence of infrastructure availability, human resources, tax incentives, political stability, and the investment climate on accelerating investment in the renewable energy sector—specifically hydropower—and regional economic development in North Tapanuli Regency. The study involved a saturated sample of 308 respondents: hydropower investors from 23 project sites, government officials, and local communities. Data analysis was conducted using both descriptive and quantitative methods. The findings reveal that infrastructure availability, human resources, tax incentives, political stability, and the investment climate all significantly influence the acceleration of investment in the renewable energy sector (hydropower) and regional economic development, both partially and simultaneously, in North Tapanuli. Human resources and political stability have the most substantial impact on these variables. High-quality human resources contribute to productivity and innovation, attracting investors, while political stability creates an optimal environment for investment—both critical for regional economic growth. This research serves as a vital foundation for creating a conducive investment climate, accelerating regional economic development, and fostering sustainable opportunities for future economic growth.

Reimagining the Langkat Museum: Developing a Hybrid Museum and Cultural Heritage Center in Tanjung Pura, Langkat

2025-04-11T13:29:54+07:00

Museum Langkat is located in North Sumatra Province and serves as a cultural heritage site in Tanjung Pura, Langkat Regency. This museum building possesses significant architectural and historical value, with considerable potential as a cultural center due to its strategic location near other cultural heritage sites, including the Azizi mosque and the former site of the second Palace of the Sultan of Langkat. This article examines the evolution of the Langkat Museum in Tanjung Pura, North Sumatra, into a hybrid museum and cultural heritage center. The structure, formerly the administrative office of the Langkat Sultanate, currently exhibits physical decay and restricted utility. This research presents a hybrid model that combines physical restoration, digital accessibility, and community-oriented programming. The paper advocates for a sustainable and inclusive strategy to rejuvenate regional museums in Indonesia, utilizing global and regional precedents. It delineates critical research deficiencies concerning hybrid museums, community involvement, and the amalgamation of disparate cultural resources. The proposed paradigm designates the museum as a catalyst for cultural continuity, education, and regional development.