Improving water saving measures is the necessary way to protect the ecological base flow of rivers in water shortage areas of Northwest China

Low efficiency of water use in agricultural irrigation is the main obstacle preventing river ecological base flow protection in water shortage areas in Northwest China. By constructing a quantitative calculation model, the important contribution agricultural irrigation water-saving measures have on...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Bo Cheng, Huaien Li
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Water saving measures Ecological base flow Protection degree and rate Surplus and shortage analysis Water shortage area of Northwest China Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/edd5ac54aec24bb4aaf498a4fa303105
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:edd5ac54aec24bb4aaf498a4fa303105
record_format	dspace
spelling	oai:doaj.org-article:edd5ac54aec24bb4aaf498a4fa3031052021-12-01T04:43:35ZImproving water saving measures is the necessary way to protect the ecological base flow of rivers in water shortage areas of Northwest China1470-160X10.1016/j.ecolind.2021.107347https://doaj.org/article/edd5ac54aec24bb4aaf498a4fa3031052021-04-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21000121https://doaj.org/toc/1470-160XLow efficiency of water use in agricultural irrigation is the main obstacle preventing river ecological base flow protection in water shortage areas in Northwest China. By constructing a quantitative calculation model, the important contribution agricultural irrigation water-saving measures have on river ecological base flow protection are quantitatively analyzed in this study. Firstly, we determine water demand of the river ecological base flow combined with the river protection goal, determining water shortage in non-flood seasons combined with residual water in rivers after irrigation diversion. Secondly, we quantitatively determine water saving by combining water saving measures. Finally, we use water balance analysis to quantitatively calculate the protection degree and the protection rate of the river ecological base flow. Calculation results indicate that river ecological base flow from October to May of the next year is [5.66, 7.42 m3/s] and is greater than or equal to 21.69 m3/s from June to September. Total water saving after improving water saving measures are 66.55, 133.11 and 205.66 million m3 under three proposed scenarios; protection degree and protection rate after improving water saving measures in non-flood seasons under the three scenarios are 59.38%, 93.66% and 100%, and 45.92%, 74.02% and 100%, respectively, which gradually reached the target protection rate of 90% for river ecological base flow required by administrative departments. Comparison of advantages, disadvantages and costs of the three main protection modes indicated that improving water saving measures are the most reasonable protection measure to protect the ecological base flow of rivers. By using a quantitative study, a basis for reasonable safeguard measures of the ecological base flow of rivers in water shortage areas of Northwest China are presented.Bo ChengHuaien LiElsevierarticleWater saving measuresEcological base flowProtection degree and rateSurplus and shortage analysisWater shortage area of Northwest ChinaEcologyQH540-549.5ENEcological Indicators, Vol 123, Iss , Pp 107347- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Water saving measures Ecological base flow Protection degree and rate Surplus and shortage analysis Water shortage area of Northwest China Ecology QH540-549.5
spellingShingle	Water saving measures Ecological base flow Protection degree and rate Surplus and shortage analysis Water shortage area of Northwest China Ecology QH540-549.5 Bo Cheng Huaien Li Improving water saving measures is the necessary way to protect the ecological base flow of rivers in water shortage areas of Northwest China
description	Low efficiency of water use in agricultural irrigation is the main obstacle preventing river ecological base flow protection in water shortage areas in Northwest China. By constructing a quantitative calculation model, the important contribution agricultural irrigation water-saving measures have on river ecological base flow protection are quantitatively analyzed in this study. Firstly, we determine water demand of the river ecological base flow combined with the river protection goal, determining water shortage in non-flood seasons combined with residual water in rivers after irrigation diversion. Secondly, we quantitatively determine water saving by combining water saving measures. Finally, we use water balance analysis to quantitatively calculate the protection degree and the protection rate of the river ecological base flow. Calculation results indicate that river ecological base flow from October to May of the next year is [5.66, 7.42 m3/s] and is greater than or equal to 21.69 m3/s from June to September. Total water saving after improving water saving measures are 66.55, 133.11 and 205.66 million m3 under three proposed scenarios; protection degree and protection rate after improving water saving measures in non-flood seasons under the three scenarios are 59.38%, 93.66% and 100%, and 45.92%, 74.02% and 100%, respectively, which gradually reached the target protection rate of 90% for river ecological base flow required by administrative departments. Comparison of advantages, disadvantages and costs of the three main protection modes indicated that improving water saving measures are the most reasonable protection measure to protect the ecological base flow of rivers. By using a quantitative study, a basis for reasonable safeguard measures of the ecological base flow of rivers in water shortage areas of Northwest China are presented.
format	article
author	Bo Cheng Huaien Li
author_facet	Bo Cheng Huaien Li
author_sort	Bo Cheng
title	Improving water saving measures is the necessary way to protect the ecological base flow of rivers in water shortage areas of Northwest China
title_short	Improving water saving measures is the necessary way to protect the ecological base flow of rivers in water shortage areas of Northwest China
title_full	Improving water saving measures is the necessary way to protect the ecological base flow of rivers in water shortage areas of Northwest China
title_fullStr	Improving water saving measures is the necessary way to protect the ecological base flow of rivers in water shortage areas of Northwest China
title_full_unstemmed	Improving water saving measures is the necessary way to protect the ecological base flow of rivers in water shortage areas of Northwest China
title_sort	improving water saving measures is the necessary way to protect the ecological base flow of rivers in water shortage areas of northwest china
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/edd5ac54aec24bb4aaf498a4fa303105
work_keys_str_mv	AT bocheng improvingwatersavingmeasuresisthenecessarywaytoprotecttheecologicalbaseflowofriversinwatershortageareasofnorthwestchina AT huaienli improvingwatersavingmeasuresisthenecessarywaytoprotecttheecologicalbaseflowofriversinwatershortageareasofnorthwestchina
_version_	1718405798718078976

Improving water saving measures is the necessary way to protect the ecological base flow of rivers in water shortage areas of Northwest China

Ejemplares similares