The Environmental Service of Rokan Hilir Regency and UPT KPH Bagansiapiapi are responsible for the conservation of mangrove forests, the problem of this research is the change in the function of mangrove forests into oil palm plantations and the occurrence of very extensive abrasion in Sungai Daun Village, Pasir Limau Kapas District, Rokan Hilir Regency in 2019. This study aims to find out…