Spatiotemporal Distribution of Total Suspended Matter Concentration in Changdang Lake Based on In Situ Hyperspectral Data and Sentinel-2 Images

The concentration of total suspended matter (TSM) is an important parameter for evaluating lake water quality. We determined in situ hyperspectral data and TSM concentration data for Changdang Lake, China, to establish a TSM concentration inversion model. The model was applied using 60 Sentinel-2 im...

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Autores principales:	Zuoyan Gao, Qian Shen, Xuelei Wang, Hongchun Peng, Yue Yao, Mingxiu Wang, Libing Wang, Ru Wang, Jiarui Shi, Dawei Shi, Wenguang Liang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Changdang Lake total suspended matter concentration Sentinel-2 image ecological dredging Science Q
Acceso en línea:	https://doaj.org/article/a17b123250bf401193081182705f91ef
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spelling	oai:doaj.org-article:a17b123250bf401193081182705f91ef2021-11-11T18:50:42ZSpatiotemporal Distribution of Total Suspended Matter Concentration in Changdang Lake Based on In Situ Hyperspectral Data and Sentinel-2 Images10.3390/rs132142302072-4292https://doaj.org/article/a17b123250bf401193081182705f91ef2021-10-01T00:00:00Zhttps://www.mdpi.com/2072-4292/13/21/4230https://doaj.org/toc/2072-4292The concentration of total suspended matter (TSM) is an important parameter for evaluating lake water quality. We determined in situ hyperspectral data and TSM concentration data for Changdang Lake, China, to establish a TSM concentration inversion model. The model was applied using 60 Sentinel-2 images acquired from 2016 to 2021 to determine the temporal and spatial distribution of TSM concentration. Remote sensing images were also utilized to monitor the effect of ecological dredging in Changdang Lake. The following results were obtained: (1) Compared with four existing models, the TSM concentration inversion model established in this study exhibited higher accuracy and was suitable for Changdang Lake. (2) TSM concentrations obtained for the period 2016–2021 were higher in spring and summer, and lower in autumn and winter. (3) The dredging process influenced a small area of the surrounding water body, resulting in higher TSM concentrations. However, a subsequent reduction in TSM concentrations indicated that the ecological dredging project might improve the water quality of Changdang Lake to a considerable extent. Therefore, it was inferred that the use of Sentinel-2 images was effective for the long-term monitoring of water quality changes in small and medium-sized lakes.Zuoyan GaoQian ShenXuelei WangHongchun PengYue YaoMingxiu WangLibing WangRu WangJiarui ShiDawei ShiWenguang LiangMDPI AGarticleChangdang Laketotal suspended matter concentrationSentinel-2 imageecological dredgingScienceQENRemote Sensing, Vol 13, Iss 4230, p 4230 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Changdang Lake total suspended matter concentration Sentinel-2 image ecological dredging Science Q
spellingShingle	Changdang Lake total suspended matter concentration Sentinel-2 image ecological dredging Science Q Zuoyan Gao Qian Shen Xuelei Wang Hongchun Peng Yue Yao Mingxiu Wang Libing Wang Ru Wang Jiarui Shi Dawei Shi Wenguang Liang Spatiotemporal Distribution of Total Suspended Matter Concentration in Changdang Lake Based on In Situ Hyperspectral Data and Sentinel-2 Images
description	The concentration of total suspended matter (TSM) is an important parameter for evaluating lake water quality. We determined in situ hyperspectral data and TSM concentration data for Changdang Lake, China, to establish a TSM concentration inversion model. The model was applied using 60 Sentinel-2 images acquired from 2016 to 2021 to determine the temporal and spatial distribution of TSM concentration. Remote sensing images were also utilized to monitor the effect of ecological dredging in Changdang Lake. The following results were obtained: (1) Compared with four existing models, the TSM concentration inversion model established in this study exhibited higher accuracy and was suitable for Changdang Lake. (2) TSM concentrations obtained for the period 2016–2021 were higher in spring and summer, and lower in autumn and winter. (3) The dredging process influenced a small area of the surrounding water body, resulting in higher TSM concentrations. However, a subsequent reduction in TSM concentrations indicated that the ecological dredging project might improve the water quality of Changdang Lake to a considerable extent. Therefore, it was inferred that the use of Sentinel-2 images was effective for the long-term monitoring of water quality changes in small and medium-sized lakes.
format	article
author	Zuoyan Gao Qian Shen Xuelei Wang Hongchun Peng Yue Yao Mingxiu Wang Libing Wang Ru Wang Jiarui Shi Dawei Shi Wenguang Liang
author_facet	Zuoyan Gao Qian Shen Xuelei Wang Hongchun Peng Yue Yao Mingxiu Wang Libing Wang Ru Wang Jiarui Shi Dawei Shi Wenguang Liang
author_sort	Zuoyan Gao
title	Spatiotemporal Distribution of Total Suspended Matter Concentration in Changdang Lake Based on In Situ Hyperspectral Data and Sentinel-2 Images
title_short	Spatiotemporal Distribution of Total Suspended Matter Concentration in Changdang Lake Based on In Situ Hyperspectral Data and Sentinel-2 Images
title_full	Spatiotemporal Distribution of Total Suspended Matter Concentration in Changdang Lake Based on In Situ Hyperspectral Data and Sentinel-2 Images
title_fullStr	Spatiotemporal Distribution of Total Suspended Matter Concentration in Changdang Lake Based on In Situ Hyperspectral Data and Sentinel-2 Images
title_full_unstemmed	Spatiotemporal Distribution of Total Suspended Matter Concentration in Changdang Lake Based on In Situ Hyperspectral Data and Sentinel-2 Images
title_sort	spatiotemporal distribution of total suspended matter concentration in changdang lake based on in situ hyperspectral data and sentinel-2 images
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/a17b123250bf401193081182705f91ef
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Spatiotemporal Distribution of Total Suspended Matter Concentration in Changdang Lake Based on In Situ Hyperspectral Data and Sentinel-2 Images

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