An important effort to preserve the ecosystem is the replanting of mangrove seedlings in Wonorejo Village, Surabaya. This activity not only focuses on environmental preservation but also seeks to increase economic potential through processing mangrove products, such as mangrove syrup. The purpose of this activity is to increase public awareness of the importance of protecting the environment and the use of mangrove fruit as a basic ingredient for making syrup, which is very nutritious and economically beneficial. The method used is the Asset-Based Community Development (ABCD) approach. This method includes location selection, selection of mangrove types, socialization, and community involvement and training during the planting and processing process. The results of the activity show that the community is more aware of the importance of preserving the environment and improving the local economy through the use of mangrove syrup products, which helps the sustainability of the mangrove ecosystem and progress in local products.

Important conceptual activities are carried out to deal with the environmental crisis by preserving the environment through reforestation. The condition of developing areas and the changing function of space for development requires the concept of greening. Humans are one of the determining factors for efforts to preserve the environment while having the role and responsibility of empowering environmental wealth for the survival of the ecosystem. The purpose of this community service activity is to revive natural aesthetics, trees as air fresheners, and flood mitigation. Community service with greening efforts to preserve the environment uses the Participatory Action Research (PAR) method as a basis. The results obtained include the creation of a fresh, healthy, and cool atmosphere, nature becomes maintained and clean, and the addition of new knowledge to do reforestation through planting tree seedlings.