Understanding the water quality change of the Yilong Lake based on comprehensive assessment methods

To understand the water quality changes of the Yilong Lake and reveal the driving factors of water quality changes in different periods, in this study, based on 13 water quality parameters, the water quality of Yilong Lake from 2008 to 2018 was comprehensively evaluated by water quality health compr...

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Autores principales:	Tao Wu, Shengrui Wang, Baolin Su, Huaxin Wu, Guoqiang Wang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Water quality index Water quality assessment Water quality parameters Yilong Lake Comprehensive assessment Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/71fe2002a0264ed3b6a2cb94a5f6f566
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spelling	oai:doaj.org-article:71fe2002a0264ed3b6a2cb94a5f6f5662021-12-01T04:51:54ZUnderstanding the water quality change of the Yilong Lake based on comprehensive assessment methods1470-160X10.1016/j.ecolind.2021.107714https://doaj.org/article/71fe2002a0264ed3b6a2cb94a5f6f5662021-07-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21003794https://doaj.org/toc/1470-160XTo understand the water quality changes of the Yilong Lake and reveal the driving factors of water quality changes in different periods, in this study, based on 13 water quality parameters, the water quality of Yilong Lake from 2008 to 2018 was comprehensively evaluated by water quality health comprehensive assessment method (ETI) and water quality index method (WQI), and 6 key parameters were determined by WQI method to develop a more convenient WQImin comprehensive evaluation model. The results showed that: (1) Yilong Lake’s single-factor water quality evaluation result was inferior to category V, CODCr and TN had a greater impact on the water quality evaluation results; while the ETI and WQI evaluation methods show the water quality of Yilong Lake is at a moderate level (53.58 ± 7.46 and 0.53 ± 0.13). Among them, nutrients such as nitrogen and phosphorus have the greatest impact on WQI and ETI values. (2) The comprehensive evaluation method reveals that the water quality changes of Yilong Lake can be divided into two stages. Among them, the water quality of lakes declined from 2008 to 2013, and the main driving factors are the increase in industrial sewage discharge and the increase in pollution load caused by tourism development; and from 2014 to 2018, lake water quality showed an improving trend, and the spatial change shows that the water quality of the west is slightly better than the middle and the east, which is mainly due to the increase of the lake's self-purification ability, the implementation of various treatment measures, the water supplement project and the location of pollutant discharge; (3) Based on the WQI method, six key parameters of DO, CODMn, EC, TN, Hg, and Chla were determined and the Yilong Lake WQImin model was developed. The water quality evaluation results of the WQImin model considering the weight are more accurate, and the water quality change characteristics of Yilong Lake can be understood simply and quickly.Tao WuShengrui WangBaolin SuHuaxin WuGuoqiang WangElsevierarticleWater quality indexWater quality assessmentWater quality parametersYilong LakeComprehensive assessmentEcologyQH540-549.5ENEcological Indicators, Vol 126, Iss , Pp 107714- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Water quality index Water quality assessment Water quality parameters Yilong Lake Comprehensive assessment Ecology QH540-549.5
spellingShingle	Water quality index Water quality assessment Water quality parameters Yilong Lake Comprehensive assessment Ecology QH540-549.5 Tao Wu Shengrui Wang Baolin Su Huaxin Wu Guoqiang Wang Understanding the water quality change of the Yilong Lake based on comprehensive assessment methods
description	To understand the water quality changes of the Yilong Lake and reveal the driving factors of water quality changes in different periods, in this study, based on 13 water quality parameters, the water quality of Yilong Lake from 2008 to 2018 was comprehensively evaluated by water quality health comprehensive assessment method (ETI) and water quality index method (WQI), and 6 key parameters were determined by WQI method to develop a more convenient WQImin comprehensive evaluation model. The results showed that: (1) Yilong Lake’s single-factor water quality evaluation result was inferior to category V, CODCr and TN had a greater impact on the water quality evaluation results; while the ETI and WQI evaluation methods show the water quality of Yilong Lake is at a moderate level (53.58 ± 7.46 and 0.53 ± 0.13). Among them, nutrients such as nitrogen and phosphorus have the greatest impact on WQI and ETI values. (2) The comprehensive evaluation method reveals that the water quality changes of Yilong Lake can be divided into two stages. Among them, the water quality of lakes declined from 2008 to 2013, and the main driving factors are the increase in industrial sewage discharge and the increase in pollution load caused by tourism development; and from 2014 to 2018, lake water quality showed an improving trend, and the spatial change shows that the water quality of the west is slightly better than the middle and the east, which is mainly due to the increase of the lake's self-purification ability, the implementation of various treatment measures, the water supplement project and the location of pollutant discharge; (3) Based on the WQI method, six key parameters of DO, CODMn, EC, TN, Hg, and Chla were determined and the Yilong Lake WQImin model was developed. The water quality evaluation results of the WQImin model considering the weight are more accurate, and the water quality change characteristics of Yilong Lake can be understood simply and quickly.
format	article
author	Tao Wu Shengrui Wang Baolin Su Huaxin Wu Guoqiang Wang
author_facet	Tao Wu Shengrui Wang Baolin Su Huaxin Wu Guoqiang Wang
author_sort	Tao Wu
title	Understanding the water quality change of the Yilong Lake based on comprehensive assessment methods
title_short	Understanding the water quality change of the Yilong Lake based on comprehensive assessment methods
title_full	Understanding the water quality change of the Yilong Lake based on comprehensive assessment methods
title_fullStr	Understanding the water quality change of the Yilong Lake based on comprehensive assessment methods
title_full_unstemmed	Understanding the water quality change of the Yilong Lake based on comprehensive assessment methods
title_sort	understanding the water quality change of the yilong lake based on comprehensive assessment methods
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/71fe2002a0264ed3b6a2cb94a5f6f566
work_keys_str_mv	AT taowu understandingthewaterqualitychangeoftheyilonglakebasedoncomprehensiveassessmentmethods AT shengruiwang understandingthewaterqualitychangeoftheyilonglakebasedoncomprehensiveassessmentmethods AT baolinsu understandingthewaterqualitychangeoftheyilonglakebasedoncomprehensiveassessmentmethods AT huaxinwu understandingthewaterqualitychangeoftheyilonglakebasedoncomprehensiveassessmentmethods AT guoqiangwang understandingthewaterqualitychangeoftheyilonglakebasedoncomprehensiveassessmentmethods
_version_	1718405729691369472

Understanding the water quality change of the Yilong Lake based on comprehensive assessment methods

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