Determining the Optimal Biomass of Macrophytes during the Ecological Restoration Process of Eutrophic Shallow Lakes

Many studies have shown that macrophytes play a significant role in controlling eutrophication; however, only a few of these are based on macrophyte biomass. Based on the growth characteristic of macrophytes, we propose an approach for the assessment of the optimal biomass of macrophytes in the deca...

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Autores principales:	Wen Hu, Weiwei Wei, Chun Ye, Chunhua Li, Ye Zheng, Xiaogang Shi, Manqi Chang, Hongsen Chen
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	shallow lake macrophytes optimal biomass PCLake Lake Datong lake management Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
Acceso en línea:	https://doaj.org/article/b2beb78a804e4cb382afdbf1ce2990ae
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spelling	oai:doaj.org-article:b2beb78a804e4cb382afdbf1ce2990ae2021-11-11T19:58:29ZDetermining the Optimal Biomass of Macrophytes during the Ecological Restoration Process of Eutrophic Shallow Lakes10.3390/w132131422073-4441https://doaj.org/article/b2beb78a804e4cb382afdbf1ce2990ae2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4441/13/21/3142https://doaj.org/toc/2073-4441Many studies have shown that macrophytes play a significant role in controlling eutrophication; however, only a few of these are based on macrophyte biomass. Based on the growth characteristic of macrophytes, we propose an approach for the assessment of the optimal biomass of macrophytes in the decay and growth periods in Lake Datong (a shallow lake), using a lake ecological model. The results showed that the pollution load of the lake should be reduced by 50% while conforming to the Environmental Quality Standards for Surface Water (EQSSW) Class Ⅲ. In contrast, with an increase in the pollution load of 5%, the results indicate that the lake may deteriorate to a turbid state over the next few years. The macrophyte biomass should be harvested during the decay period, when 80% biomass is beneficial to the water quality of the eutrophic shallow lake. Based on macrophyte simulation from 2020–2024, the wet biomass of macrophytes should be controlled at 5.5 kg/m<sup>2</sup>. The current macrophyte biomass in Lake Datong is four-fold higher than the simulated optimal biomass. This study provides a reference for the adequate ecological restoration of the lake and its subsequent maintenance, as well as scientific support for improving the comprehensive evaluation standard of healthy lakes and the theoretical basis of lake ecological restoration.Wen HuWeiwei WeiChun YeChunhua LiYe ZhengXiaogang ShiManqi ChangHongsen ChenMDPI AGarticleshallow lakemacrophytesoptimal biomassPCLakeLake Datonglake managementHydraulic engineeringTC1-978Water supply for domestic and industrial purposesTD201-500ENWater, Vol 13, Iss 3142, p 3142 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	shallow lake macrophytes optimal biomass PCLake Lake Datong lake management Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
spellingShingle	shallow lake macrophytes optimal biomass PCLake Lake Datong lake management Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Wen Hu Weiwei Wei Chun Ye Chunhua Li Ye Zheng Xiaogang Shi Manqi Chang Hongsen Chen Determining the Optimal Biomass of Macrophytes during the Ecological Restoration Process of Eutrophic Shallow Lakes
description	Many studies have shown that macrophytes play a significant role in controlling eutrophication; however, only a few of these are based on macrophyte biomass. Based on the growth characteristic of macrophytes, we propose an approach for the assessment of the optimal biomass of macrophytes in the decay and growth periods in Lake Datong (a shallow lake), using a lake ecological model. The results showed that the pollution load of the lake should be reduced by 50% while conforming to the Environmental Quality Standards for Surface Water (EQSSW) Class Ⅲ. In contrast, with an increase in the pollution load of 5%, the results indicate that the lake may deteriorate to a turbid state over the next few years. The macrophyte biomass should be harvested during the decay period, when 80% biomass is beneficial to the water quality of the eutrophic shallow lake. Based on macrophyte simulation from 2020–2024, the wet biomass of macrophytes should be controlled at 5.5 kg/m<sup>2</sup>. The current macrophyte biomass in Lake Datong is four-fold higher than the simulated optimal biomass. This study provides a reference for the adequate ecological restoration of the lake and its subsequent maintenance, as well as scientific support for improving the comprehensive evaluation standard of healthy lakes and the theoretical basis of lake ecological restoration.
format	article
author	Wen Hu Weiwei Wei Chun Ye Chunhua Li Ye Zheng Xiaogang Shi Manqi Chang Hongsen Chen
author_facet	Wen Hu Weiwei Wei Chun Ye Chunhua Li Ye Zheng Xiaogang Shi Manqi Chang Hongsen Chen
author_sort	Wen Hu
title	Determining the Optimal Biomass of Macrophytes during the Ecological Restoration Process of Eutrophic Shallow Lakes
title_short	Determining the Optimal Biomass of Macrophytes during the Ecological Restoration Process of Eutrophic Shallow Lakes
title_full	Determining the Optimal Biomass of Macrophytes during the Ecological Restoration Process of Eutrophic Shallow Lakes
title_fullStr	Determining the Optimal Biomass of Macrophytes during the Ecological Restoration Process of Eutrophic Shallow Lakes
title_full_unstemmed	Determining the Optimal Biomass of Macrophytes during the Ecological Restoration Process of Eutrophic Shallow Lakes
title_sort	determining the optimal biomass of macrophytes during the ecological restoration process of eutrophic shallow lakes
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b2beb78a804e4cb382afdbf1ce2990ae
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Determining the Optimal Biomass of Macrophytes during the Ecological Restoration Process of Eutrophic Shallow Lakes

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