SPATIAL DISTRIBUTION OF HYDROCARBON CONTAMINANT AND THEIR LEVEL OF DISTURBANCE TO THE MANGROVE ECOSYSTEM AT PUSAKAJAYA UTARA COAST KARAWANG, WEST JAVA

• Main Author: Naufal Faryzan, Qistan
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/51075
• Institution: Institut Teknologi Bandung

Oil spills in the sea are a serious problem that has a huge impact on the environment. The oil leak that occurred on July 12, 2019 off the coast of Karawang is one of the incidents of environmental pollution that has had a negative impact, both on vegetation and public health. Oil deposition needs to be handled properly. One of the processes that can support this treatment is phytoremediation, which is played out by mangrove vegetation. However, this role has the risk of disrupting the growth and resilience of mangroves to the environment, so it is necessary to handle it by knowing the distribution of areas that are prone to damage using spatial information. The purpose of this study was to determine the distribution map of hydrocarbon contamination and the level of disturbance to the mangrove ecosystem in Pusakajaya Utara Karawang Coast using remote sensing technology in the form of multispectral images. The images used are Landsat 7 imagery and SPOT 7. These images are used in analyzing hydrocarbons and mangrove morphometric dispersion values using SWIR II Band on Landsat 7,Index Fluorescence, and Vegetation Index (Green Leaf Index and Global Environmental Monitoring Index) which are modeled. The results showed that the model is obtained PAH PAH = 18.9 + (629.3 * B7) - (95.9 * FI) + 10.4 with R2 = 0.6. The map of the distribution of hydrocarbon concentrations obtained shows that the area is dominated by low classes with a concentration value range of 31-34%. The area is quite good although it still needs treatment because the PAH content is still above the minimum water quality standard. Model leaf morphometric values obtained CV = 10.5 + (239.99 * GLI) + (7.29E-06 * GEMI) + 1.7 with R2 = 0.89. The distribution of mangrove disturbance levels in the area is dominated by medium and low classes with an area of 1.9 and 1.8 ha, respectively. The distribution of the resulting damage area was dominated by medium class with an area of 6.7 ha. The area of damage in each class needs to be treated differently according to the level of damage.