Zhai,Z K1,2; Lu,S L1,5; Wang,P3; Wang,C1; Tang,H L1; Liu,D Y4; Han,Q Y4; Guo,J4; Liu,X H4; Wei,T L5
发表期刊IOP Conference Series: Earth and Environmental Science
ISSN1755-1307
2021
卷号626期号:1
关键词Chlorophyll-a RetrievalGF1-WFV DataRemote SensingBohai Sea
DOI10.1088/1755-1315/626/1/012021
英文摘要AbstractChlorophyll-a (Chl-a) concentration is an important indicator of phytoplankton bloom and water eutrophication. It is also a basic parameter of water quality. Remote sensing technology has been widely used for water quality monitoring in the past. In this study, the Chinese GF1 (Gaofen-1) WFV (Wide Field of View) images acquired on May 19th, 2016 were used to retrieve Chl-a concentration of central Bohai sea in order to assess the recovery condition of marine ecosystem which has been seriously polluted by the Penglai 19-3 platform oil spill accident in 2011. The remote sensing model of Chl-a concentration was developed using the linear regression method. The leave-one-out cross-validation (LOOCV) method showed that the average relative error and root mean square error (RMSE) between retrieved Chl-a concentration and in situ measurement was 11.67% and 0.1808, respectively. It indicated that the remote sensing model could correctly reflect the Chl-a concentration and its spatial distribution of the study area. The average Chl-a concentration in the buffer regions with the distance of 2km, 4km, 6km to the Penglai 19-3 platform was 0.32μg/L, 0.37μg/L and 0.40μg/L, respectively. They were in normal range and lower than that of the coastal waters. The spatial distribution of the result was similar to previous studies of Bohai sea in spring. These results indicated that Chl-a concentration of central Bohai sea was returned to normal after oil spill accident occurred for 5 years. The growth of phytoplankton in surface seawater has been returned to normal. The major causes for Chl-a concentration in the Bohai Sea was the land-sourced pollutant during the study period.
语种英语
WOS记录号IOP:1755-1307-626-1-012021
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/27586
专题中科院海岸带环境过程与生态修复重点实验室
中科院海岸带环境过程与生态修复重点实验室_海岸带信息集成与战略规划研究中心
作者单位1.Key Laboratory of Digital Earth Science, Aerospace Information Research Institute, Chinese Academy of Sciences, State Key Laboratory of Remote Sensing Science, Beijing, China, 100101
2.National Geomatics Center of China, Beijing, China,100830
3.College of Geomatics, Shandong University of Science and Technology, Qingdao, China,266590
4.Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China,264003
5.China Biodiversity Conservation and Green Development Foundation, Beijing, China,100089
推荐引用方式
GB/T 7714Zhai,Z K,Lu,S L,Wang,P,et al. Ocean Chlorophyll-a retrieval using GF1-WFV data-a case study of the central Bohai Sea[J]. IOP Conference Series: Earth and Environmental Science,2021,626(1).
APAZhai,Z K.,Lu,S L.,Wang,P.,Wang,C.,Tang,H L.,...&Wei,T L.(2021).Ocean Chlorophyll-a retrieval using GF1-WFV data-a case study of the central Bohai Sea.IOP Conference Series: Earth and Environmental Science,626(1).
MLAZhai,Z K,et al."Ocean Chlorophyll-a retrieval using GF1-WFV data-a case study of the central Bohai Sea".IOP Conference Series: Earth and Environmental Science 626.1(2021).
PDF全文下载地址:
点我下载PDF
