2015年南黄海海域浒苔时空分布特征

Tempo-spatial Distribution Features of Ulva prolifera in South Yellow Sea in 2015

利用2015年获得的MODIS、GF-1号等卫星遥感影像资料,分析南黄海海域浒苔发生的时空分布特征,以期对南黄海海域今后的浒苔预防及综合治理提供参考依据.结果显示:2015年度首次发现浒苔时间较2014年晚12d,浒苔灾情严重时期较2014年提前10d左右,月累计覆盖面积最大值从7月提前到6月,受台风连续过境影响,浒苔消亡时间比2014年提前了15d;2015年浒苔的发现位置、分布趋势情况与2014年基本一致,但高频分布区域有向外海及向北延伸的趋势.

Objective to provide reference basis for Ulva prolifera prevention and integrated management South Yellow Sea area, tempo-spatial distribution features of Ulva prolifera were analyzed utilizing satellite remote sensing image data from MODIS ＆ GF-1 in 2015. The result showed that the date that Ulva proZifera first detected was 12 days later than that in 2014, blooming period was 15 days earlier than that in 2014, peak of the cumulative monthly covering area was almost 1 month ahead in the comparison to that in 2014. Influenced by the successive typhoon, decay date was almost 15 days early. Initial detected location, tendency of development and drift of Ulva prolifera in the 2 years were basically in line, whereas the high frequency distribution area was extending northeastward.