An Assessment of Water Color for Inland Water in China Using a Landsat 8-Derived Forel-Ule Index and the Google Earth Engine Platform

	An Assessment of Water Color for Inland Water in China Using a Landsat 8-Derived Forel-Ule Index and the Google Earth Engine Platform
	Chen, Xidong; Liu, Liangyun; Zhang, Xiao; Li, Junsheng; Wang, Shenglei; Liu, Dong; Duan, Hongtao; Song, Kaishan
刊名	IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
	2021
卷号	14 页码:5773-5785
英文摘要	Water color is an important parameter in water quality assessment. However, the existing water color investigations have mostly focused on the lakes with areas greater 1 km(2). In order to improve the understanding of the color of water bodies in China, a cloud-free composite image of China for the summer of 2015 was generated using time-series of Landsat-8 imagery and the best-available-pixel (BAP) compositing algorithm. Then, the first Forel-Ule index (FUI) water color product with a resolution of 30 m was produced for China using the generated BAP composite and the Google Earth Engine computing platform. Finally, the first national-scale assessment of the FUI of natural lakes with an area >0.01 km(2) (N = 60026) was conducted based on the generated FUI product. The generated FUI product was shown to have a high degree of consistency with in situ water surface reflectance-derived FUI (R-2 = 0.90, P < 0.001). Also, it had a high degree of consistency with the in situ Secchi depth (R-2 = 0.90, P < 0.001) and trophic level index (R-2 = 0.62, P < 0.001) datasets. In addition, we found that the most prevalent lake colors in China were yellow (about 49%) and green (about 41%). Besides, the proportion of small lakes (areas < 1 km(2)) found to be yellow was much larger than for large lakes (area >= 1 km(2)) (50% against 28%). Our results will provide important information that can be used for preserving and restoring inland water resources.
内容类型	期刊论文
源URL	[http://159.226.73.51/handle/332005/20689]
专题	中国科学院南京地理与湖泊研究所
推荐引用方式 GB/T 7714	Chen, Xidong,Liu, Liangyun,Zhang, Xiao,et al. An Assessment of Water Color for Inland Water in China Using a Landsat 8-Derived Forel-Ule Index and the Google Earth Engine Platform[J]. IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING,2021,14:5773-5785.
APA	Chen, Xidong.,Liu, Liangyun.,Zhang, Xiao.,Li, Junsheng.,Wang, Shenglei.,...&Song, Kaishan.(2021).An Assessment of Water Color for Inland Water in China Using a Landsat 8-Derived Forel-Ule Index and the Google Earth Engine Platform.IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING,14,5773-5785.
MLA	Chen, Xidong,et al."An Assessment of Water Color for Inland Water in China Using a Landsat 8-Derived Forel-Ule Index and the Google Earth Engine Platform".IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING 14(2021):5773-5785.