Impact of anthropogenic activities on morphological and deposition flux changes in the Pearl River Estuary, China

Abstract The evolution of the Pearl River Estuary (PRE), China in recent decades has been dominated by human activities. Historical admiralty charts and remote sensing images indicated that from 1936 to 2017, the tidal flat area and water area decreased by 23.6 × 107 m2 and 60.7 × 107 m2, respective...

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Autores principales:	Xing Wei, Shuqun Cai, Weikang Zhan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f83d24d9681f42f286d065f19317553a
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spelling	oai:doaj.org-article:f83d24d9681f42f286d065f19317553a2021-12-02T15:10:39ZImpact of anthropogenic activities on morphological and deposition flux changes in the Pearl River Estuary, China10.1038/s41598-021-96183-02045-2322https://doaj.org/article/f83d24d9681f42f286d065f19317553a2021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96183-0https://doaj.org/toc/2045-2322Abstract The evolution of the Pearl River Estuary (PRE), China in recent decades has been dominated by human activities. Historical admiralty charts and remote sensing images indicated that from 1936 to 2017, the tidal flat area and water area decreased by 23.6 × 107 m2 and 60.7 × 107 m2, respectively. The average advancing rate of the coastline of the PRE to the sea from 1972 to 2017 reached approximately 64.8 m/year, which is several times or even dozens of times that since the mid-Holocene. Land reclamation was the main reason for the dramatic changes in the water area and coastline. Although the water volume of the PRE showed a decreasing trend from 1936 to 2017, the water volume reduction rates for 1996–2005 and 2005–2017 were only 29% (1.27 × 107 m3/year) and 12% (0.53 × 107 m3/year), respectively, of that for 1936–1972. The combined influences of channel dredging, sand mining, and sediment load reduction caused by dam construction have contributed to this change. From the perspective of the filling up of the estuary, channel dredging, sand mining, and dam construction in the river basin are beneficial for prolonging the life of the estuary.Xing WeiShuqun CaiWeikang ZhanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xing Wei Shuqun Cai Weikang Zhan Impact of anthropogenic activities on morphological and deposition flux changes in the Pearl River Estuary, China
description	Abstract The evolution of the Pearl River Estuary (PRE), China in recent decades has been dominated by human activities. Historical admiralty charts and remote sensing images indicated that from 1936 to 2017, the tidal flat area and water area decreased by 23.6 × 107 m2 and 60.7 × 107 m2, respectively. The average advancing rate of the coastline of the PRE to the sea from 1972 to 2017 reached approximately 64.8 m/year, which is several times or even dozens of times that since the mid-Holocene. Land reclamation was the main reason for the dramatic changes in the water area and coastline. Although the water volume of the PRE showed a decreasing trend from 1936 to 2017, the water volume reduction rates for 1996–2005 and 2005–2017 were only 29% (1.27 × 107 m3/year) and 12% (0.53 × 107 m3/year), respectively, of that for 1936–1972. The combined influences of channel dredging, sand mining, and sediment load reduction caused by dam construction have contributed to this change. From the perspective of the filling up of the estuary, channel dredging, sand mining, and dam construction in the river basin are beneficial for prolonging the life of the estuary.
format	article
author	Xing Wei Shuqun Cai Weikang Zhan
author_facet	Xing Wei Shuqun Cai Weikang Zhan
author_sort	Xing Wei
title	Impact of anthropogenic activities on morphological and deposition flux changes in the Pearl River Estuary, China
title_short	Impact of anthropogenic activities on morphological and deposition flux changes in the Pearl River Estuary, China
title_full	Impact of anthropogenic activities on morphological and deposition flux changes in the Pearl River Estuary, China
title_fullStr	Impact of anthropogenic activities on morphological and deposition flux changes in the Pearl River Estuary, China
title_full_unstemmed	Impact of anthropogenic activities on morphological and deposition flux changes in the Pearl River Estuary, China
title_sort	impact of anthropogenic activities on morphological and deposition flux changes in the pearl river estuary, china
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f83d24d9681f42f286d065f19317553a
work_keys_str_mv	AT xingwei impactofanthropogenicactivitiesonmorphologicalanddepositionfluxchangesinthepearlriverestuarychina AT shuquncai impactofanthropogenicactivitiesonmorphologicalanddepositionfluxchangesinthepearlriverestuarychina AT weikangzhan impactofanthropogenicactivitiesonmorphologicalanddepositionfluxchangesinthepearlriverestuarychina
_version_	1718387730923126784

Impact of anthropogenic activities on morphological and deposition flux changes in the Pearl River Estuary, China

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