Variation in Vegetation Area caused by Topographical Change at Jinudo in the Nakdong Estuary

J. Ocean Eng. Technol. 2009;23(4):19-24.

Ryu Sung-Hoon,Lee In-Cheol,Park So-Young

Department of Ocean Engineering Pukyong National University,Department of Ocean Engineering Pukyong National University,Department of Ocean Engineering Pukyong National University

낙동강 하구역 진우도내 지형변동에 따른 식생면적의 변화

류성훈,이인철,박소영

부경대학교 해양공학과,부경대학교 해양공학과,부경대학교 해양공학과

Keywords: Topographical change, Vegetation area, Correlation analysis, Jinudo, Nakdong estuary

핵심용어: 지형변화, 식생면적, 상관분석, 진우도, 낙동강하구

Abstract

In order to analysis the variation in vegetation area caused by topographical change at Jinudo in the Nakdong estuary, we used aerial photographs of Jinudo from 1998 to 2006. To extract an accuracy shoreline from these aerial photographs, a tide calibration was performed. We also estimated the annual variation in topographic area and vegetation area, and then analyzed the relationship between them by a correlation analysis. The following results were obtained: 1) The calibrated shoreline distance of Jinudo from 1998 to 2006 was estimated to have a range of (-)1,927 cm to (+)4,671 cm. 2) Annual changes in the topographic area and vegetation area in Jinudo have been increasing gradually from 1998, and the correlation coefficient between topographic area and vegetation area is 0.97. 3) The estimated topographic areas were with following order: southern (III), eastern (IV), northern (II) and western (I), while for the vegetation area, the order was southern (III), northern (II), eastern (IV) and western (I). 4) The vegetation area of the southern region (III) of Jinudo had the largest size among the regions, and was calculated to be $4.3{sim}5.4$ times larger than the eastern region (IV).