干旱区生态环境知识资源中心(Arid): Classification of instream ecological water demand and crucial values in a semi-arid river basin

Arid

DOI	10.1016/j.scitotenv.2019.136409
	Classification of instream ecological water demand and crucial values in a semi-arid river basin
	Liu, Fang 1,2; Qin, Tianling 1; Yan, Denghua 1; Wang, Yu 3; Dong, Biqiong 1; Wang, Jianwei 1; Nie, Hanjiang 1,4; He, Shan 1; Liu, Shanshan 1
通讯作者	Qin, Tianling
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	712
英文摘要	Analyzing the instream environmental flow demand by coupling the hydrological cycle and the hydrodynamic process with aquatic ecological processes at watershed scale remains one of the most important yet most difficult issues. One or two of the above processes have been the focus in the evaluation of intra-annual ecological water demand in recent studies. In this study, a hydrology-hydrodynamic-habitat model was developed and applied to the Huangshui River basin. A new classification method for instream ecological water demand (LEWD), which considered sensitive species was proposed. The suitable level of LEWD and crucial values with different flow frequencies were analysed, including runoff, water level, water surface width and weighted usable areas (WUA). The results of the study indicated that monthly LEWD had an increasing trend during the flood season and a decreasing trend during the non-flood season in three sections at different suitable levels. With the increase of suitable levels, the range of LEWD in three sections also increased. The LEWD and crucial values were the lowest in March with the smallest range and were the highest from July to October because the amount of precipitation during that period accounted for nearly 84.3%, of that of the entire year. Furthermore, the lower the flow frequency in three sections, the higher the suitable levels of LEWD, as well as water level and water surface width every month. When the flow frequency of 90% decreased to 75%, the value of LEWD increased by at least 55% during the wet season and doubled during the dry season. The WUA with the lowest or highest flow frequencies were relatively poor, especially reproduction period. The LEWD and crucial values at different suitable levels agreed with the actual situations. Thus, this study provided a new method for implementing river ecosystem restoration and aquatic ecosystem management. (C) 2020 The Authors. Published by Elsevier B.V.
英文关键词	Instream ecological water demand Crucial values Hydrology-hydrodynamic-habitat model Classification
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000512369600026
WOS关键词	ENVIRONMENTAL FLOW REQUIREMENTS ; PRAGUE METROPOLITAN-AREA ; YANGTZE-RIVER ; HABITAT SUITABILITY ; MODEL ; MANAGEMENT ; PRECIPITATION ; SIMULATION ; RESOURCES ; QUANTITY
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	清华大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315521
作者单位	1.China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing 100038, Peoples R China; 2.Donghua Univ, Coll Environm Sci & Engn, Shanghai 201620, Peoples R China; 3.Yellow River Engn Consulting Co Ltd, Yellow River Inst Hydraul Res, Zhengzhou 450003, Peoples R China; 4.Tsinghua Univ, Dept Hydraul Engn, Beijing 100084, Peoples R China
推荐引用方式 GB/T 7714	Liu, Fang,Qin, Tianling,Yan, Denghua,et al. Classification of instream ecological water demand and crucial values in a semi-arid river basin[J]. 清华大学,2020,712.
APA	Liu, Fang.,Qin, Tianling.,Yan, Denghua.,Wang, Yu.,Dong, Biqiong.,...&Liu, Shanshan.(2020).Classification of instream ecological water demand and crucial values in a semi-arid river basin.SCIENCE OF THE TOTAL ENVIRONMENT,712.
MLA	Liu, Fang,et al."Classification of instream ecological water demand and crucial values in a semi-arid river basin".SCIENCE OF THE TOTAL ENVIRONMENT 712(2020).