CAJ | 학술논문

浒苔是我国近海一种新型的海洋生态灾害，自2008年以来，每年5-8月份在黄海海域周期性暴发与消亡，给沿海地区造成不同的环境影响和经济损失。基于2008年-2012年五年的M ODIS数据，计算了山东半岛海域长时间序列NDVI ，利用阈值分割法提取浒苔信息，并进一步获得爆发的时间、面积、相对聚集密度、影响范围及浒苔漂浮路径。结果表明：2008年以来各年浒苔最早发生在5月中旬至6月上旬，6月中旬至7上旬进入爆发期，浒苔面积、影响范围及浒苔密度达到最大值，其相对聚集密度峰值一般早于或晚于爆发期一个生长阶段，最终于7月下旬或8月上旬进入消亡期，平均持续时间约为71天。浒苔漂浮路径整体为从东南外海逐渐开始向西北近海海域靠近。从浒苔面积、影响范围、相对聚集密度等多项指标综合看，2008年和2009年两年浒苔爆发较为严重。
호태시아국근해일충신형적해양생태재해，자2008년이래，매년5-8월빈재황해해역주기성폭발여소망，급연해지구조성불동적배경영향화경제손실。기우2008년-2012년오년적M ODIS수거，계산료산동반도해역장시간서렬NDVI ，이용역치분할법제취호태신식，병진일보획득폭발적시간、면적、상대취집밀도、영향범위급호태표부로경。결과표명：2008년이래각년호태최조발생재5월중순지6월상순，6월중순지7상순진입폭발기，호태면적、영향범위급호태밀도체도최대치，기상대취집밀도봉치일반조우혹만우폭발기일개생장계단，최종우7월하순혹8월상순진입소망기，평균지속시간약위71천。호태표부로경정체위종동남외해축점개시향서북근해해역고근。종호태면적、영향범위、상대취집밀도등다항지표종합간，2008년화2009년량년호태폭발교위엄중。
In the present study ,the MODIS data were used to monitor the situation of Ulva .proliferain the Shandong Peninsu-la waters during the period of 2008-2012 .Those studies mainly calculate the area of NDVI ,and get the information of the time , area ,scope ,floating path of Ulva .prolifera by using threshold segmentation method .The feasibility of monitoring Ulva .pro-lifera information based on MODIS data and the macroscopic regularity of the outburst of Ulva .proliferawas elementally stud-ied .The results showed that Ulva .proliferafirst generated in the middle of May or early June ,the time ,area ,scope of Ulva . prolifera reached a maximum ,but the relative crowding density was earlier or later when Ulva .proliferadeveloped into a out-burst .Finally ,Ulva .prolifera died away after existing for 71 days in the late July or the early August .Wholly ,the floating path moved to the northwest from off the coast to offshore .Based on those aspects above ,the outburst of Ulva .prolifera in 2008 and 2009 was more serious than others .