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DOI | 10.1016/j.watres.2024.121496 |
Weakened hydrological oscillation period increased the frequency of river algal blooms | |
Hu, Qiang; Chen, Yan; Xia, Rui; Liu, Xiaoyu; Jia, Ruining; Zhang, Kai; Li, Xiaoxuan; Yan, Chao; Wang, Yao; Yin, Yingze; Li, Xiang; Ming, Junde | |
发表日期 | 2024 |
ISSN | 0043-1354 |
EISSN | 1879-2448 |
起始页码 | 255 |
卷号 | 255 |
英文摘要 | The evolution of riverine aquatic ecosystems typically exhibits notable characteristic with cumulative, enduring, and hysteresis. Exploring the non-linear response of riverine ecology to long-term hydrological fluctuations become a major challenge in contemporary interdisciplinary research. In response to the critical issue of frequent river algal blooms in the lower Han River, which is impacted by Asian largest inter-basin water diversion project. We identified the non-linear response of eco-hydrology across various time scales through the integration of Continuous Wavelet Transform (CWT) and Inverse Wavelet Transform (IWT). Our study revealed that: 1) Over the past half century, the hydrological regime in the lower Han river showed a significant downward trend, and existed three significant hydrological oscillation periods (HOPs), including the short-scale Intra-AC (180 days), the medium-scale AC (365 days, the first major period), and the long-scale Inter-AC (2500 days), the variation of Inter-AC changed most dramatically. 2) We further found that the Inter-AC variation of hydrology is more closely related to the formation of river algal blooms in the Han River, and when the hydrological Inter-AC shows steady state or downward trend, the frequency of algal blooms in the lower Han River increases significantly. 3) The river algal blooms in the lower Han River is a cumulative consequence to the long-term hydrological influences. Weakened hydrological Inter-AC is more likely to increase the frequency of river algal blooms, and 10-years Inter-AC cumulation increased the frequency by 60%. Therefore, the weaken of long-scale HOP will significantly increase the frequency of river algal blooms in the future. This study received a critical scientific insight and aimed at provide guidance for the optimization of ecological management within the framework of national large-scale water conservation. |
英文关键词 | Han River; River algal blooms; Hydrological oscillation period; Non-linear response; Wavelet transform; Long-term impact |
语种 | 英语 |
WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Water Resources |
WOS类目 | Engineering, Environmental ; Environmental Sciences ; Water Resources |
WOS记录号 | WOS:001218182900001 |
来源期刊 | WATER RESEARCH
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/301756 |
作者单位 | Chinese Research Academy of Environmental Sciences; Chinese Academy of Sciences; Chongqing Institute of Green & Intelligent Technology, CAS; Northwest University Xi'an; Chinese Research Academy of Environmental Sciences |
推荐引用方式 GB/T 7714 | Hu, Qiang,Chen, Yan,Xia, Rui,et al. Weakened hydrological oscillation period increased the frequency of river algal blooms[J],2024,255. |
APA | Hu, Qiang.,Chen, Yan.,Xia, Rui.,Liu, Xiaoyu.,Jia, Ruining.,...&Ming, Junde.(2024).Weakened hydrological oscillation period increased the frequency of river algal blooms.WATER RESEARCH,255. |
MLA | Hu, Qiang,et al."Weakened hydrological oscillation period increased the frequency of river algal blooms".WATER RESEARCH 255(2024). |
条目包含的文件 | 条目无相关文件。 |
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