CAJ | 학술논문

通过采用先进的遥感技术,基于光学和雷达时间序列卫星影像(陆地卫星,SPOT和雷达卫星),本文对金瓯半岛(位于湄公河三角洲南部)土地覆被变化及湄公河河岸侵蚀情况进行了检测研究.鉴于金瓯半岛典型的土地覆被类型为红树林,通过对1973-2008年红树林遥感影像分析发现,近年来红树林林地面积急尉下降,超过一半的红树林已经转变为虾养殖场.与此同时,检测发现湄公河河岸已经被严重侵蚀,且侵蚀趋势正加速恶化.具体而言,田河和口河的左右两岸被认为是遭受严重侵蚀的热点区域.本文以1966-1968年地形图作为基准线数据,与1989-2009年卫星影像数据进行比照分析,此外采用数字海岸线分析系统(DSAS)模型对未来变化趋势进行了预测.
통과채용선진적요감기술,기우광학화뢰체시간서렬위성영상(륙지위성,SPOT화뢰체위성),본문대금구반도(위우미공하삼각주남부)토지복피변화급미공하하안침식정황진행료검측연구.감우금구반도전형적토지복피류형위홍수림,통과대1973-2008년홍수림요감영상분석발현,근년래홍수림임지면적급위하강,초과일반적홍수림이경전변위하양식장.여차동시,검측발현미공하하안이경피엄중침식,차침식추세정가속악화.구체이언,전하화구하적좌우량안피인위시조수엄중침식적열점구역.본문이1966-1968년지형도작위기준선수거,여1989-2009년위성영상수거진행비조분석,차외채용수자해안선분석계통(DSAS)모형대미래변화추세진행료예측.
By taking the advantages of remote sensing technology,changes of land cover in Ca Mau Peninsular(the Southern part of the Mekong delta)and erosion of riverbank of the Mekong River have been defined.Change detection using time-series optical and radar satellite images(Landsat,SPOT and Radarsat)is the main approach in this study.Typical land cover in Ca Mau Peninsular is mangrove; its changes are observable by analysing imageries from 1973 to 2008.The results showed that more than half of the mangrove area was converted into shrimp farms.This made forest cover severely declined.Riverbank of the Mekong River also was detected to be eroded and accreted in a complicated form.Locations along the left and right banks of Tien and Hau river are defined as hot spots that are seriously suffered erosions.Topographic maps in 1966-1968 were taken into account as base line data,which was analyzed along with satellite images from 1989 to 2009.In addition,the Digital Shoreline Analysis System (DSAS)package was taken to analyze trend of changes in terms of changing prediction.