Reservoir ecological operation considering outflow variations across different time scales

The regulation of reservoirs contributes huge socioeconomic benefits to society at the expense of inducing adverse effects on downstream ecosystems. The reservoir average outflow (such as monthly) can be out of the ecological flow range while the partial daily outflow is suitable due to the outflow...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Yibo Wang, Pan Liu, Ming Dou, He Li, Bo Ming, Yu Gong, Zhikai Yang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Ecological indicator Ecological flow Outflow variations Multi-objective Reservoir operation Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/0054254713de4e7493217f9169c73645
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:0054254713de4e7493217f9169c73645
record_format	dspace
spelling	oai:doaj.org-article:0054254713de4e7493217f9169c736452021-12-01T04:48:35ZReservoir ecological operation considering outflow variations across different time scales1470-160X10.1016/j.ecolind.2021.107582https://doaj.org/article/0054254713de4e7493217f9169c736452021-06-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21002478https://doaj.org/toc/1470-160XThe regulation of reservoirs contributes huge socioeconomic benefits to society at the expense of inducing adverse effects on downstream ecosystems. The reservoir average outflow (such as monthly) can be out of the ecological flow range while the partial daily outflow is suitable due to the outflow fluctuations. To address this issue, the reservoir outflow variations across different time scales (OVDTS) were proposed to form a novel ecological indicator. First, the ecological flow for the full life cycles of indicative native and nonnative species was calculated. Then, the reservoir OVDTS were proposed to describe the streamflow difference between long (e.g., 10-day) and short (e.g., daily) time intervals, and the ecological fitness (namely ecofit) was then formed. Finally, the reservoir operating rule curves were optimized by considering ecofit as well as average annual water supply, water supply reliability, average annual hydropower generation and hydropower generation reliability. The China’s Danjiangkou Reservoir was selected as the case study. It is validated that the established ecofit was almost equal to the proportion of reservoir outflow that met ecological flow range. The ecofit of optimized operating rule curves was improved by 4.19% compared with conventional operation without decreasing the performance of other objectives, also with ecofit improvements of wet, normal, and dry years. It was unexpected that the ecological objective of the optimized operating rule curves was significantly better than that of natural flow mimicry in dry years. The proposed OVDTS and ecofit could be helpful to reservoir ecological operations.Yibo WangPan LiuMing DouHe LiBo MingYu GongZhikai YangElsevierarticleEcological indicatorEcological flowOutflow variationsMulti-objectiveReservoir operationEcologyQH540-549.5ENEcological Indicators, Vol 125, Iss , Pp 107582- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ecological indicator Ecological flow Outflow variations Multi-objective Reservoir operation Ecology QH540-549.5
spellingShingle	Ecological indicator Ecological flow Outflow variations Multi-objective Reservoir operation Ecology QH540-549.5 Yibo Wang Pan Liu Ming Dou He Li Bo Ming Yu Gong Zhikai Yang Reservoir ecological operation considering outflow variations across different time scales
description	The regulation of reservoirs contributes huge socioeconomic benefits to society at the expense of inducing adverse effects on downstream ecosystems. The reservoir average outflow (such as monthly) can be out of the ecological flow range while the partial daily outflow is suitable due to the outflow fluctuations. To address this issue, the reservoir outflow variations across different time scales (OVDTS) were proposed to form a novel ecological indicator. First, the ecological flow for the full life cycles of indicative native and nonnative species was calculated. Then, the reservoir OVDTS were proposed to describe the streamflow difference between long (e.g., 10-day) and short (e.g., daily) time intervals, and the ecological fitness (namely ecofit) was then formed. Finally, the reservoir operating rule curves were optimized by considering ecofit as well as average annual water supply, water supply reliability, average annual hydropower generation and hydropower generation reliability. The China’s Danjiangkou Reservoir was selected as the case study. It is validated that the established ecofit was almost equal to the proportion of reservoir outflow that met ecological flow range. The ecofit of optimized operating rule curves was improved by 4.19% compared with conventional operation without decreasing the performance of other objectives, also with ecofit improvements of wet, normal, and dry years. It was unexpected that the ecological objective of the optimized operating rule curves was significantly better than that of natural flow mimicry in dry years. The proposed OVDTS and ecofit could be helpful to reservoir ecological operations.
format	article
author	Yibo Wang Pan Liu Ming Dou He Li Bo Ming Yu Gong Zhikai Yang
author_facet	Yibo Wang Pan Liu Ming Dou He Li Bo Ming Yu Gong Zhikai Yang
author_sort	Yibo Wang
title	Reservoir ecological operation considering outflow variations across different time scales
title_short	Reservoir ecological operation considering outflow variations across different time scales
title_full	Reservoir ecological operation considering outflow variations across different time scales
title_fullStr	Reservoir ecological operation considering outflow variations across different time scales
title_full_unstemmed	Reservoir ecological operation considering outflow variations across different time scales
title_sort	reservoir ecological operation considering outflow variations across different time scales
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/0054254713de4e7493217f9169c73645
work_keys_str_mv	AT yibowang reservoirecologicaloperationconsideringoutflowvariationsacrossdifferenttimescales AT panliu reservoirecologicaloperationconsideringoutflowvariationsacrossdifferenttimescales AT mingdou reservoirecologicaloperationconsideringoutflowvariationsacrossdifferenttimescales AT heli reservoirecologicaloperationconsideringoutflowvariationsacrossdifferenttimescales AT boming reservoirecologicaloperationconsideringoutflowvariationsacrossdifferenttimescales AT yugong reservoirecologicaloperationconsideringoutflowvariationsacrossdifferenttimescales AT zhikaiyang reservoirecologicaloperationconsideringoutflowvariationsacrossdifferenttimescales
_version_	1718405703068024832

Reservoir ecological operation considering outflow variations across different time scales

Ejemplares similares