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All Journal Journal of Sylva Indonesiana Global Forest Journal
Evalina Herawati
Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Materials Science & Nanotechnology

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Analysis of Vegetation Density and Distribution of Green Belts in the City Center of Medan Using the Normalized Difference Vegetation Index Nur Hidayat; Anita Zaitunah; Nelly Anna; Samsuri; Evalina Herawati; Alfan Gunawan Ahmad
Journal of Sylva Indonesiana Vol. 9 No. 01 (2026): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsi.v9i01.23249

Abstract

This study evaluates the distribution and condition of vegetation within the green belts of Medan City Center in 2025 by employing the Normalized Difference Vegetation Index (NDVI) derived from Sentinel-2 satellite imagery, supplemented by field verification through purposive sampling. The analysis reveals that the findings indicate that non-vegetated category (NDVI < 0.1) dominated, encompassing 12,240.98 hectares or approximately 43.98%, whereas the dense vegetation class (NDVI 0.3–0.4) represents the smallest portion, covering only 3,009.70 hectares (10.81%) of the total area.Vegetation index values within these urban corridors range from a maximum of 0.55 to a minimum of -0.04, where lower values are predominantly associated with built-up areas and open land, while higher values are restricted to riparian buffers and fragmented green spaces. Spatial pattern analysis, utilizing a 500-meter buffer, highlights significant disparities in vegetation distribution and underscores the mounting pressure of urbanization, which has compromised the ecological functions of the city’s green infrastructure. Consequently, these findings emphasize the critical need for strategic planning and robust policy interventions to revitalize green open spaces as essential ecological infrastructure; therefore, the primary recommendation focuses on expanding green belt vegetation through intensification and protection efforts to ensure that ecological, social, and aesthetic functions are maintained sustainably within the Medan City Center.
The influence of online bamboo product marketing strategy on consumer buying interest Hafizah Arinah; Muhammad Dimas; Iwan Risnasari; Evalina Herawati; Alisyah Madani; Wahyu Andayani
Global Forest Journal. Vol. 4 No. 2 (2026): Global Forest Journal
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/gfj.v4i2.25146

Abstract

Compared with the large literature on generic e-commerce goods, research on how online marketing strategy shapes consumer interest in traditional non-timber forest products (NTFPs) is thin. Bamboo ulos bags illustrate the gap well: they combine everyday functionality with cultural and local wisdom, so consumers may not respond to their online marketing the same way they do to mass-market products. That is the question this study tests. The study examines the effect of online marketing strategy on purchase interest at Etnobambu Craft, an online store in North Sumatra, Indonesia that sells bamboo ulos bags. It uses an associative-descriptive design and covers the store's full population of 20 customers who bought a bag between August and September 2024, via census sampling. Data collection relied on a five-point Likert questionnaire adapted from established digital marketing mix and purchase intention indicators. The analysis was conducted using SPSS 25, which included several tests: the Pearson product-moment correlation test, Cronbach's alpha for reliability, the Kolmogorov-Smirnov normality test, and a simple linear regression model. From the data analysis, it is known that the online marketing strategy received an average score of 77.8 and a purchase interest score of 76.4, both in the "good" category. The results of the simple linear regression model analysis are significant from the marketing strategy to purchase interest (p = 0.000 < 0.05; Y = 38.200 + 1.000X). Therefore, social media promotions, discounts, and free shipping are the most important and beneficial strategies for forest product-based SMEs seeking to drive purchase interest in bamboo-based craft products through online marketing
Co-Authors Alfan Gunawan Ahmad Alisyah Madani Anita Zaitunah Hafizah Arinah Iwan RISNASARI Muhammad Dimas Nelly Anna Nur Hidayat Samsuri, Samsuri Wahyu Andayani