摘要：Mangroves are plants that can live in tidal areas. The study aims to determine the condition of the mangrove ecosystem through a mangrove community structure approach in Lambadeuk Village, Peukan Bada District, Aceh Besar District. This research was conducted in November 2017 using the stratified sampling method. The results showed that there were only 2 types of mangrove species found in Lambadeuk Village, Peukan Bada District, Aceh Besar District, the first is Rhizophora apiculata as many as 36 individuals and the second one is Rhizophora mucronata as many as 116 individuals. The important value index (INP) tree and sapling of Rhizophora apiculata at station 1 and station 3 of 253.655% and station 2 of 183.789%. While seedling of Rhizophora apiculata at station 1 and station 3 of 250.04% and station 2 of 175.02%. The important value index (INP) tree and sapling of Rhizophora mucronata at station 1 and station 3 of 253.655%. While seedling of Rhizophora mucronata at station 1 and station 3 of 250.04%. The diversity (H') obtained is low where H' 2.0, dominance (C) is low where 0 < C 0.5 and evenness (E) is also low where 0 < E 0.5.
