IOCAS-IR  > 海洋生态与环境科学重点实验室
Long-Term Changes in the Unique and Largest Seagrass Meadows in the Bohai Sea (China) Using Satellite (1974-2019) and Sonar Data: Implication for Conservation and Restoration
Xu, Shaochun1,2,3,4,5; Xu, Shuai1,2,3,4,5; Zhou, Yi1,2,3,4,5; Yue, Shidong1,2,3,4,5; Zhang, Xiaomei1,2,3,4; Gu, Ruiting1,2,3,4,5; Zhang, Yu1,2,3,4,5; Qiao, Yongliang6; Liu, Mingjie1,2,3,4,5
2021-03-01
发表期刊REMOTE SENSING
卷号13期号:5页码:16
摘要

Seagrass meadows play critical roles in supporting a high level of biodiversity but are continuously threatened by human activities, such as sea reclamation. In this study, we reported on a large seagrass (Zostera marina L.) meadow in Caofeidian shoal harbor in the Bohai Sea of northern China. We evaluated the environmental impact of sea reclamation activities using Landsat imagery (1974-2019) by mapping seagrass meadow distribution changes. ISODATA was adopted for the unsupervised classification and mapping of seagrass beds. The error matrix developed using the in situ data obtained from acoustic surveys for Landsat 8OLI image classification was 87.20% accurate. The maps showed rapidly increasing changes in seagrass meadows as the amount of reclaimed land increased. Some seagrass meadows experienced large-scale changes, and sea reclamation has been suggested as the main factor responsible for habitat loss, which results from physical damage, excessive sedimentation, and increased turbidity caused by reclamation. In addition, habitat degradation may have resulted from three storm surges induced by typhoons in 1992-1998. Fortunately, land reclamation, forming an artificial "longshore bar", buffers seagrass meadows from wave actions, providing relatively sheltered conditions, which has allowed a large habitat increase since 2012. These were the largest eelgrass meadows (3,217.32 ha), with a peripheral area of similar to 100 km(2), in the Bohai Sea of northern China in 2019. However, the existing largest eelgrass beds in China are threatened by trawling, clam harvesting (especially clam sucking), channel dredging, and culture pond construction. Our work will help coastal managers monitor the environmental impacts of reclamation activities on seagrass meadows on a large spatio-temporal scale and will also provide information for seagrass restoration using artificial "longshore bars".

关键词seagrass Zostera marina L. remote sensing reclamation spatial and temporal changes
DOI10.3390/rs13050856
收录类别SCI
语种英语
资助项目National Key R&D Program of China[2019YFD0901300] ; National Science & Technology Basic Work Program[2015FY110600] ; Key Research Project of Frontier Sciences of CAS[QYZDB-SSW-DQC041-1] ; Taishan Scholars Program (Distinguished Taishan Scholars)
WOS研究方向Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS类目Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号WOS:000628494100001
出版者MDPI
引用统计
被引频次:15[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/170176
专题海洋生态与环境科学重点实验室
通讯作者Zhou, Yi
作者单位1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China
3.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China
4.Chinese Acad Sci, Inst Oceanol, CAS Engn Lab Marine Ranching, Qingdao 266071, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Qingdao Univ Sci & Technol, Qingdao 266000, Peoples R China
第一作者单位海洋生态与环境科学重点实验室;  中国科学院海洋研究所
通讯作者单位海洋生态与环境科学重点实验室;  中国科学院海洋研究所
推荐引用方式
GB/T 7714
Xu, Shaochun,Xu, Shuai,Zhou, Yi,et al. Long-Term Changes in the Unique and Largest Seagrass Meadows in the Bohai Sea (China) Using Satellite (1974-2019) and Sonar Data: Implication for Conservation and Restoration[J]. REMOTE SENSING,2021,13(5):16.
APA Xu, Shaochun.,Xu, Shuai.,Zhou, Yi.,Yue, Shidong.,Zhang, Xiaomei.,...&Liu, Mingjie.(2021).Long-Term Changes in the Unique and Largest Seagrass Meadows in the Bohai Sea (China) Using Satellite (1974-2019) and Sonar Data: Implication for Conservation and Restoration.REMOTE SENSING,13(5),16.
MLA Xu, Shaochun,et al."Long-Term Changes in the Unique and Largest Seagrass Meadows in the Bohai Sea (China) Using Satellite (1974-2019) and Sonar Data: Implication for Conservation and Restoration".REMOTE SENSING 13.5(2021):16.
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