Monitoring the Spatial Distribution of Mangrove Ecosystem Damage in Percut Sei Tuan

: Mangrove ecosystem has many economic and ecological benefits, but the presence of mangrove forests is increasingly threatened. Information about the damage of mangrove ecosystems is very much needed in mangrove rehabilitation activities. This study aims to get information about the level of damage to the mangrove ecosystem in Percut Sei Tuan for the period 2006 - 2016. The approach of the methodology used is overlain technique by giving weight and scores to the types of land use factors, canopy density and soil resistance to abrasion. The use of Geographic Information System (GIS) technology and remote sensing is used as a tool to determine the distribution of mangrove damage in the period 2006 to 2016. The results of the study indicate that the level of damage of the mangrove ecosystem in Percut Sei Tuan tends to increase. In 2006 it was identified 3,217.59 ha (70.55%) and increased in 2016 by 3,648.71 ha (80.01%). While the mangrove ecosystem that experienced a high level of damage to mangrove damage increased from 292.77 ha (6.42%) to 452.33 ha (9.92%).