A detailed mangrove map of China for 2019 derived from Sentinel-1 and-2 images and Google Earth images

doi:10.1002/gdj3.119

	A detailed mangrove map of China for 2019 derived from Sentinel-1 and-2 images and Google Earth images
	Zhao, Chuan-Peng 1,2; Qin, Cheng-Zhi 1,2,3
刊名	GEOSCIENCE DATA JOURNAL
	2021-03-30
页码	15
关键词	fragmented mangroves Google Earth Engine Google Earth images mangrove map Sentinel
ISSN号	2049-6060
DOI	10.1002/gdj3.119
通讯作者	Qin, Cheng-Zhi(qincz@lreis.ac.cn)
英文摘要	Mangroves straddle terrestrial and marine ecosystems, thus are relevant to many United Nations Sustainable Development Goals (SDG), especially to SDG-13 and SDG-14, as they are linked to blue carbon strategies and fisheries. To better achieve SDGs, China has been restoring mangroves for their ecological and societal values through strict protection and afforestation, even in areas beyond their natural northern limits. However, small fragmented mangrove patches, especially those in marginal climates, have been historically neglected by existing mangrove maps, which, because they were derived from 30-m-resolution Landsat data, are too coarse to resolve them. To overcome this problem, we applied a classification to 10-m-resolution Sentinel-1 and -2 images for 2019 and then an enhanced post-processing to identify missing mangrove patches by utilizing Google Earth images. Thus, we produced the first publicly accessible detailed mangrove map supplementing the main 10-m-resolution results with submetre data from Google Earth images. According to general quantitative evaluations, the produced map achieved an overall accuracy of 96.4 +/- 0.3% based on validation data sets, an accuracy of 96.2% based on a total of 1,096 field sample plots. By evaluations in marginal climates, the produced map identified six areas with a total of seven mangrove planting areas, which is twice the number of identified areas by current publicly accessible mangrove maps. The produced map also outperformed the competitors in the identification of small mangrove patches in suitable climates, and in the determination of neat and tidy boundaries of large mangrove patches. The map paid attention to these small mangrove patches because they can provide substantial ecosystem services, such as increasing the community diversity and providing habitats for local species. The map does not only serve as a basis for mangrove species mapping, leaf area index estimation and carbon stock assessment, but also improves other mangrove maps by mutual corrections.
资助项目	Ministry of Science and Technology of the People's Republic of China[2017FY100706]
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences
语种	英语
出版者	WILEY
WOS记录号	WOS:000634731500001
资助机构	Ministry of Science and Technology of the People's Republic of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/161892]
专题	中国科学院地理科学与资源研究所
通讯作者	Qin, Cheng-Zhi
作者单位	1.Chinese Acad Sci, State Key Lab Resources & Environm Informat Syst, Inst Geog Sci & Nat Resources Res, 11A,Datun Rd, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 3.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Chuan-Peng,Qin, Cheng-Zhi. A detailed mangrove map of China for 2019 derived from Sentinel-1 and-2 images and Google Earth images[J]. GEOSCIENCE DATA JOURNAL,2021:15.
APA	Zhao, Chuan-Peng,&Qin, Cheng-Zhi.(2021).A detailed mangrove map of China for 2019 derived from Sentinel-1 and-2 images and Google Earth images.GEOSCIENCE DATA JOURNAL,15.
MLA	Zhao, Chuan-Peng,et al."A detailed mangrove map of China for 2019 derived from Sentinel-1 and-2 images and Google Earth images".GEOSCIENCE DATA JOURNAL (2021):15.