Establishment of the watershed health indicators and health check of reservoirs

This study analyzed big data collected from 95 public water supply, power generation, and irrigation reservoirs in Taiwan and its outlying islands to establish and quantify the standards for seven watershed health indicators. The water supply reservoirs have high forest coverage and a low soil erosi...

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Autores principales:	Yie-Wen Tsai, Jen-Yang Lin, Ying-Chu Chen
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Ecosystem Indicator Reservoir Watershed Water Sedimentation Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/9a98dfeebb304714bdcd535f419fdb2f
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spelling	oai:doaj.org-article:9a98dfeebb304714bdcd535f419fdb2f2021-12-01T04:53:31ZEstablishment of the watershed health indicators and health check of reservoirs1470-160X10.1016/j.ecolind.2021.107779https://doaj.org/article/9a98dfeebb304714bdcd535f419fdb2f2021-08-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21004441https://doaj.org/toc/1470-160XThis study analyzed big data collected from 95 public water supply, power generation, and irrigation reservoirs in Taiwan and its outlying islands to establish and quantify the standards for seven watershed health indicators. The water supply reservoirs have high forest coverage and a low soil erosion depth; however, these reservoirs have a low water quality due to a low point source pollution was treated (9.1%–17.7%) and 44–65.8 kg nonpoint source pollution per area (km2). Most irrigation reservoirs are located in the flat plains, which have low forest coverage (50.5%) and high sediment accumulation (36.7%). The power generation reservoirs are located on steep mountains with high forest coverage and only natural soil erosion. The 30 outlying reservoirs have a Carlson’s trophic state index value higher than 50, which is primarily a function of transparency. The chemical oxygen demand achievement rate is a more suitable health indicator for the outlying reservoirs than the other aforementioned indicators. The forest coverage rate and point source pollution reduction were positively associated with watershed health, whereas sediment accumulation, nonpoint source pollution, and CTSI/RPI were negatively associated with watershed health. The results of this study suggest that management strategies need to be tailored to the type of watershed.Yie-Wen TsaiJen-Yang LinYing-Chu ChenElsevierarticleEcosystemIndicatorReservoirWatershedWaterSedimentationEcologyQH540-549.5ENEcological Indicators, Vol 127, Iss , Pp 107779- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ecosystem Indicator Reservoir Watershed Water Sedimentation Ecology QH540-549.5
spellingShingle	Ecosystem Indicator Reservoir Watershed Water Sedimentation Ecology QH540-549.5 Yie-Wen Tsai Jen-Yang Lin Ying-Chu Chen Establishment of the watershed health indicators and health check of reservoirs
description	This study analyzed big data collected from 95 public water supply, power generation, and irrigation reservoirs in Taiwan and its outlying islands to establish and quantify the standards for seven watershed health indicators. The water supply reservoirs have high forest coverage and a low soil erosion depth; however, these reservoirs have a low water quality due to a low point source pollution was treated (9.1%–17.7%) and 44–65.8 kg nonpoint source pollution per area (km2). Most irrigation reservoirs are located in the flat plains, which have low forest coverage (50.5%) and high sediment accumulation (36.7%). The power generation reservoirs are located on steep mountains with high forest coverage and only natural soil erosion. The 30 outlying reservoirs have a Carlson’s trophic state index value higher than 50, which is primarily a function of transparency. The chemical oxygen demand achievement rate is a more suitable health indicator for the outlying reservoirs than the other aforementioned indicators. The forest coverage rate and point source pollution reduction were positively associated with watershed health, whereas sediment accumulation, nonpoint source pollution, and CTSI/RPI were negatively associated with watershed health. The results of this study suggest that management strategies need to be tailored to the type of watershed.
format	article
author	Yie-Wen Tsai Jen-Yang Lin Ying-Chu Chen
author_facet	Yie-Wen Tsai Jen-Yang Lin Ying-Chu Chen
author_sort	Yie-Wen Tsai
title	Establishment of the watershed health indicators and health check of reservoirs
title_short	Establishment of the watershed health indicators and health check of reservoirs
title_full	Establishment of the watershed health indicators and health check of reservoirs
title_fullStr	Establishment of the watershed health indicators and health check of reservoirs
title_full_unstemmed	Establishment of the watershed health indicators and health check of reservoirs
title_sort	establishment of the watershed health indicators and health check of reservoirs
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/9a98dfeebb304714bdcd535f419fdb2f
work_keys_str_mv	AT yiewentsai establishmentofthewatershedhealthindicatorsandhealthcheckofreservoirs AT jenyanglin establishmentofthewatershedhealthindicatorsandhealthcheckofreservoirs AT yingchuchen establishmentofthewatershedhealthindicatorsandhealthcheckofreservoirs
_version_	1718405678737915904

Establishment of the watershed health indicators and health check of reservoirs

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