Hydrologic Alteration at the Upper and Middle Part of the Yangtze River, China: Towards Sustainable Water Resource Management Under Increasing Water Exploitation

Ali, Rawshan; Kuriqi, Alban; Abubaker, Shadan; Kişi, Özgür

doi:10.3390/su11195176

Cited by 116 publications

(29 citation statements)

References 52 publications

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“…moderate alteration). Our results proved that the IHA method encasing RVA targets is an easy and useful tool to quantify the hydrologic alteration in the study area as already reported for many rivers worldwide 36 – 40 . However, these results were preliminary since only three years of data (2011–2013) were used for IHA calculation for the post-weir period.…”

Section: Resultssupporting

confidence: 85%

Impacts of streamflow alteration on benthic macroinvertebrates by mini-hydro diversion in Sri Lanka

Munasinghe

Najim

Quadroni

et al. 2021

Sci Rep

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Our study focused on quantifying the alterations of streamflow at a weir site due to the construction of a mini-hydropower plant in the Gurugoda Oya (Sri Lanka), and evaluating the spatial responses of benthic macroinvertebrates to altered flow regime. The HEC–HMS 3.5 model was applied to the Gurugoda Oya sub-catchment to generate streamflows for the time period 1991–2013. Pre-weir flows were compared to post-weir flows with 32 Indicators of Hydrologic Alteration using the range of variability approach (RVA). Concurrently, six study sites were established upstream and downstream of the weir, and benthic macroinvertebrates were sampled monthly from May to November 2013 (during the wet season). The key water physico-chemical parameters were also determined. RVA analysis showed that environmental flow was not maintained below the weir. The mean rate of non-attainment was ~ 45% suggesting a moderate level of hydrologic alteration. Benthic macroinvertebrate communities significantly differed between the study sites located above and below the weir, with a richness reduction due to water diversion. The spatial distribution of zoobenthic fauna was governed by water depth, dissolved oxygen content and volume flow rate. Our work provides first evidence on the effects of small hydropower on river ecosystem in a largely understudied region. Studies like this are important to setting-up adequate e-flows.

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Section: Resultssupporting

confidence: 85%

Impacts of streamflow alteration on benthic macroinvertebrates by mini-hydro diversion in Sri Lanka

Munasinghe

Najim

Quadroni

et al. 2021

Sci Rep

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“…In the context of global warming and frequent human activities, a series of changes have taken place in global and local precipitation patterns, resulting in changes in regional and global water cycles [1][2][3]. The precipitation characteristics (amount, frequency, and intensity) of different grades are expected to change [4].…”

Section: Introductionmentioning

confidence: 99%

Trends in Different Grades of Precipitation over the Yangtze River Basin from 1960 to 2017

Dong

Tian

et al. 2021

Atmosphere

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Under the background of global warming, the trends and variabilities of different grades of precipitation have significant effects on the management of regional ecosystems and water resources. Based on a daily precipitation dataset collected from 148 meteorological stations in the Yangtze River Basin from 1960 to 2017, precipitation events were divided into four grades (small, moderate, large, and heavy precipitation events) according to the precipitation intensity to analyze the temporal and spatial change trends of different grades of precipitation amounts and frequencies, and the influence of different grades of precipitation on total precipitation was also discussed in this study. The results revealed that small precipitation amounts over the Yangtze River Basin decreased significantly, with a rate of −1.22%/10a, while heavy precipitation amounts showed a significant increasing trend (4.27%/10a) during the study period. The precipitation frequency of small and total events decreased significantly, with rates of −3.86%/10a and −2.97%/10a, respectively. Regionally, from the upper reaches to the lower reaches of the Yangtze River Basin, the contribution rate of small precipitation amounts and frequencies to the total precipitation gradually decreased, while heavy precipitation amounts and frequencies increased. The different grades of precipitation in region II showed a decreasing trend due to its unique geographical features. Furthermore, a Pearson correlation analysis was used to analyze the response of precipitation to long-term air temperature, demonstrating that small and moderate precipitation amounts and frequencies were mainly negatively correlated with long-term air temperature and that heavy precipitation amounts showed a stronger positive correlation with long-term air temperature (13.35%/K). Based on this, the rate of change in heavy precipitation in the Yangtze River Basin may be higher under the background of climate warming, which will lead to greater risks of extreme floods in the future. Evaluating and predicting the trends of different grades can provide a theoretical reference for agricultural production, flood control, and drought mitigation.

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“…Climate change has altered the seasonal variation in atmospheric circulation-controlled precipitation [38,39]. Climate change has increasingly affected dryness, as well as contributes to the extreme rainfall shortage, more and more, which has become more severe due to anthropogenic pressures [40,41]. For example, North China's droughts in 2009 affected 157 million acres of farmland, and the extreme dryness in Southwest China between 2009 and 2010 reduced bread-basket production to 120 million acres.…”

Section: Introductionmentioning

confidence: 99%

Human–Environment Natural Disasters Interconnection in China: A Review

Ali

Kuriqi

Kisi³

2020

Climate

Self Cite

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This study aimed to assess the interrelationship among extreme natural events and their impacts on environments and humans through a systematic and quantitative review based on the up-to-date scientific literature. Namely, the main goal was to add additional knowledge to the existing evidence of the impacts related to floods, droughts, and landslides on humans and the environment in China; this in order to identify knowledge gaps in research and practice to aid in improving the adaptation and mitigation measures against extreme natural events in China. In this study, 110 documents were analyzed in the evaluation of several impacts triggered by extreme events. Records were obtained from Scopus and Web of Science and examined with a text mining instrument to assess the pattern of publications over the years; the problems linked to extreme weather events were investigated, and the study gaps were discussed. This paper extends work by systematically reviewing recent evidence related to floods, droughts, and landslides in China. We listed the critical studies that focused on the impact of extreme events on both humans and the environment described in current reviews. The findings revealed that goods safety, social safety, and financial losses are of significant concern to the scientific community due to extreme natural events, which from our analysis resulted in being more frequent and intense. It is still underdeveloped to implement distant sensing and imaging methods to monitor and detect the impact of severe weather occurrences. There are still significant study gaps in the fields of the effects of extreme weather events. The analysis result shows that extreme events are increased during the time, so more in-depth investigation and efforts on adaptation, mitigation measures, and strategical governance plans are desperately required.

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Hydrologic Alteration at the Upper and Middle Part of the Yangtze River, China: Towards Sustainable Water Resource Management Under Increasing Water Exploitation

Cited by 116 publications

References 52 publications

Impacts of streamflow alteration on benthic macroinvertebrates by mini-hydro diversion in Sri Lanka

Impacts of streamflow alteration on benthic macroinvertebrates by mini-hydro diversion in Sri Lanka

Trends in Different Grades of Precipitation over the Yangtze River Basin from 1960 to 2017

Human–Environment Natural Disasters Interconnection in China: A Review

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