The correlation between mangrove density and suspended sediment transport in Lamreh Estuary, Mesjid Raya Subdistrict, Aceh Besar, Indonesia

International Conference on Fisheries, Aquatic, and Environmental Sciences 2018

地球科学;农业科学;生态环境科学

Permatasari, I.^1 ; Dewiyanti, I.^1 ; Purnawan, S.^1 ; Yuni, S.M.^2 ; Irham, M.^1 ; Setiawan, I.^1

Department of Marine Sciences, Faculty of Marine and Fisheries, Syiah Kuala University, Banda Aceh

23111, Indonesia^1

Department of Mathematics, Faculty of Mathematics and Natural Sciences, Syiah Kuala University, Banda Aceh

23111, Indonesia^2

关键词: Coastal area;    Indonesia;    Land transfer;    Marine productivity;    Negative correlation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/216/1/012004/pdf
DOI  :  10.1088/1755-1315/216/1/012004

来源: IOP

【 摘 要 】

Abrasion and sedimentation of mangrove land transfer in Lamreh estuary is believed to reduce the marine productivity. The objectives of the study were to determine the relationship between mangrove density and suspended sediment transport occurred in the coastal area of Lamreh Estuary. Sampling was conducted on March until May 2014, three substations were established in this site. The 1st Substation was toward the sea, the 2nd substation was in the middle land and the 3rd substation was toward the land. Square transects method used for mangrove sampling and sediment trap used to ensnare sediment. Three species found in this area were Rhizophora apiculata, Bruguiera gymnorhiza, and Avicennia marina. Furthermore, Rhizophora apiculata dominated in this area. The highest density was Bruguiera gymnorhiza with average 11 ind/100m2 and the lowest density was Heritiera littoralis with average 1 ind/100m2 in the 2nd substation. The highest sediment transport was in 1st substation and the lowest was in the 3rd substation. Sediment transport in the 1st substation for one month was 5.54 to 6.63 g/cm2/day with mangrove density was 12 ind/100m2 and sediment transport in the 3rd substation was 4.87 to 5.52g/cm2/day with mangrove density was 32 ind/100m2. The correlation between mangrove density and suspended sediment transport in this area was a negative correlation with the correlation between the two coefficients was ranged from -0.999-0.863 till. The Negative correlation was indicated resources would the high density decrease mangrove sediment transport and the opposite.