
A mechanical engineering lecturer at North Sumatra University, is an environmental practitioner since 1980 whose deep expertise in plantation industry processes, EIA consulting, and conservation projects has made him a respected voice in environmental media and advocacy across North Sumatra.
An academic researcher at University of HKBP Nommensen and Royal Thai Consulate representative in Medan, is known for his work on technological change, environmental issues, and legal expertise across the region.
Founder of Relawan Dunia Eco Enzyme, CEO of Yayasan Budaya Hijau Indonesia, environmental activist, and statistician from Medan, Indonesia.
Trees absorb CO₂, helping mitigate climate change.
They act as carbon sinks, reducing greenhouse gases in the atmosphere.
Reforestation restores degraded ecosystems, protects biodiversity, and combats desertification.
Trees provide habitat for thousands of species.
Tree roots help improve water filtration, maintain healthy watersheds, and reduce runoff and erosion.
Agroforestry (mixing trees with crops) improves soil health, increases yields, and provides fruit, nuts, or timber for food security and income.
Tree planting projects create green jobs—from nursery workers to reforestation teams and eco-tourism guides.
Urban tree planting reduces heat island effects, improves air quality, and enhances livability.
Sustainable forestry practices from planted trees promote ethical resource use and reduce reliance on old-growth logging.
Many tree-planting initiatives are done in collaboration with governments, communities, and international organizations.