气候变化领域集成服务门户(CCPortal): Evaluation of hydrological regime alteration and ecological flow processes in the changing environment of the Jialing River, China

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DOI	10.2166/wcc.2024.402
	Evaluation of hydrological regime alteration and ecological flow processes in the changing environment of the Jialing River, China
	Guo, Wenxian; Wang, Gaozhen; Ma, Yinchu; Hong, Fengtian; Huang, Lintong; Yang, Huan; Jiao, Xuyang; He, Ning; Wang, Hongxiang
发表日期	2024
ISSN	2040-2244
EISSN	2408-9354
起始页码	15
结束页码	3
卷号	15 期号:3
英文摘要	Ecological flow is a key element in maintaining the biodiversity of a basin's aquatic ecosystem. This study quantifies the degree of hydrological regime alteration in the Jialing River and the contributions of various driving factors using the indicators of hydrologic alteration and range of variability approach (IHA-RVA), the river impact method (RI), and the elasticity coefficient method based on long-term hydro-meteorological data. Cross-wavelet analysis is used to reveal the periodicity and coherence of runoff and driving factors. Additionally, the improved Q(90) method presents a more effective annual ecological flow process. The results show that the overall hydrological regime in the Jialing River has undergone a moderate change, with RVA and RI values of 45.02% and 0.66. Human activities contribute 54.68% to the changes in streamflow. Streamflow has an extremely significant correlation with precipitation and aridity index (phi). Approximately 85% of the wavelet cone of influence (COI) area, tested at a 95% confidence level, falls within the region. The study also found that the ecological flow obtained through the improved Q(90) method is more conducive to the healthy development of the river ecosystem in the Jialing River. These findings can provide some assistance for aquatic ecosystem restoration in the Jialing River.
英文关键词	climate change; guarantee degree; human activities; Jialing River; periodicity and coherence
语种	英语
WOS研究方向	Water Resources
WOS类目	Water Resources
WOS记录号	WOS:001174214800001
来源期刊	JOURNAL OF WATER AND CLIMATE CHANGE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/295680
作者单位	North China University of Water Resources & Electric Power
推荐引用方式 GB/T 7714	Guo, Wenxian,Wang, Gaozhen,Ma, Yinchu,et al. Evaluation of hydrological regime alteration and ecological flow processes in the changing environment of the Jialing River, China[J],2024,15(3).
APA	Guo, Wenxian.,Wang, Gaozhen.,Ma, Yinchu.,Hong, Fengtian.,Huang, Lintong.,...&Wang, Hongxiang.(2024).Evaluation of hydrological regime alteration and ecological flow processes in the changing environment of the Jialing River, China.JOURNAL OF WATER AND CLIMATE CHANGE,15(3).
MLA	Guo, Wenxian,et al."Evaluation of hydrological regime alteration and ecological flow processes in the changing environment of the Jialing River, China".JOURNAL OF WATER AND CLIMATE CHANGE 15.3(2024).