The Relationship between the Health of Coral Reefs to The Damages of Jelateng Sub Watersheds in the Northern Coast of Sekotong, West Nusa Tenggara

2nd International Conference of Indonesian Society for Remote Sensing 2016

地球科学;计算机科学

Zaenuri, A.^1 ; Saputra, A.N.^1 ; Kudiastuti, D.A.^1 ; Fajria, I.^1 ; Awijayanti, L.^1 ; Aryaguna, P.A.^1

Masters Program of Remote Sensing, Faculty of Geography, Universitas Gadjah Mada, Indonesia^1

关键词: Classification-tree analysis;    Coral reef;    LANDSAT;    Marine resources;    Remote sensing images;    Remote sensing technology;    Sekotong;    Spatial informations;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/47/1/012019/pdf
DOI  :  10.1088/1755-1315/47/1/012019

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Coral reefs are unique ecosystem and most of them are found in tropical areas. Remote sensing technology has the ability to present the information about the existence of marine resources, such as coral reefs. Remote sensing technology also provide the spatial information on wider area. This study is aimed to see how significant the effect of watersheds damage toward the condition of coral reefs because of erosion which is occurred in the upstream and sedimentation which is occurred in the downstream of the watershed. Acquisition of the data in this study used remote sensing image Landsat 7 ETM+ and Lansat 8 OLI in multi temporal, the data collection of this study used photo-quadrate technique and taking sample in the field. Spectral analysis and transformation of CTA (Classification Tree Analysis) was used to generate the level of the health of coral reefs. The method of RSI (Red Silt Index) was used to find out the degree of turbidity of the water. Analysis of the changes was done to find out the changes which were occurred on coral reefs based on the changes of turbidity that were occurred between 2000 till 2015. Based on the result, it shows that there is no effect on the changes of turbidity value toward the health condition of coral reefs in the northern coast of Sekotong Sub District 2000 till 2015. This is due to the use of RSI index or turbidity index that cannot be used in the condition of shallow water.