黄、东海海域浒苔时空分布变化特征研究

发布时间：2018-06-26 20:15

本文选题：浒苔 + 漂移路径　；参考：《海洋环境科学》2017年03期

【摘要】：选取黄海、东海海域为研究区域,以MODIS遥感影像数据为数据源,计算了研究区的比值植被指数,利用动态阈值分割和ArcGIS空间分析方法获取了2008~2015年浒苔发生初期空间分布特点、漂移路径、空间分布和聚集度变化特征等信息。结果表明:1)浒苔最初于五月中旬到六月上旬期间出现在江苏盐城市北部和长江口附近海域。2)随着浒苔的生长和爆发,浒苔均会先向西北漂移至苏北外海海域,然后再进入黄海。其漂移路径具有明显的年际变化特征。3)在生长过程中,浒苔斑块空间分布状态整体由南向北生长、汇聚和扩张,少部分年份会出现整体漂移现象。4)进入治理期后,覆盖密度不断减小直至浒苔完全消失。通过该研究可以更好地了解浒苔灾害发生和发展规律,为其有效治理提供技术支持。
[Abstract]:Using Huang Hai and East China Sea as the study area, the ratio vegetation index of the study area was calculated using MODIS remote sensing image data as the data source. The spatial distribution characteristics of Enteromorpha margin in the initial stage of occurrence from 2008 to 2015 were obtained by using dynamic threshold segmentation and ArcGIS spatial analysis method. Drift path, spatial distribution and aggregation characteristics, and so on. The results showed that Enteromorpha enteromorpha first appeared in the northern part of Yancheng City, Jiangsu Province and in the sea area near the Changjiang Estuary from mid-May to early June.) with the growth and eruption of Enteromorpha enteromorpha, Enteromorpha enteromorpha first drifted northwestward to the waters off the coast of northern Jiangsu and then entered Huang Hai. During the growth process, the spatial distribution state of the patches of Enteromorpha margin grew, converged and expanded from south to north, and in a few years, the phenomenon of global drift appeared in a few years. 4) after the treatment period, the spatial distribution of the patches of Enteromorpha enteromorpha grew from the south to the north. The coverage density decreased continuously until Enteromorpha enteromorpha disappeared completely. Through this study, we can better understand the occurrence and development of Enteromorpha margin, and provide technical support for its effective management.
【作者单位】：淮海工学院测绘工程学院;淮海工学院设备与实验室管理处;
【基金】：国家自然科学基金项目(31270745) 江苏省海洋资源开发研究院开放课题基金项目(JSIMR201503) 江苏省高等学校实验室研究会资助项目(201213)
【分类号】：X55

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