Characterization of the evolution of runoff‐sediment relationship in Min River based on coupling coordination theory

Wang, Hongxiang; Wang, Wenping; Hu, Jianwen; Sang, Ye; Guo, Wenjuan

doi:10.1002/rra.4143

Cited by 4 publications

(2 citation statements)

References 66 publications

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“…They found that climate and anthropogenic factors contributed 30.20% and 69.80%, respectively, to the changes in runoff from the MRB. With runoff-sediment modeling, Wang et al [31] discovered that between 1970 and 2019, the yearly runoff from the MRB exhibited a non-significant declining trend. Climate and anthropogenic activities were identified as important drivers of runoff changes, with anthropogenic factors contributing 78.92-66.71% of the runoff changes, while climate contributed 21.08-33.29%.…”

Section: Introductionmentioning

confidence: 99%

Attribution Analysis of Climate Change and Human Activities on Runoff and Vegetation Changes in the Min River Basin

Liu,

Gu,

Wang

et al. 2024

Water

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Hydrological processes and the sustainable use of water resources in a river basin are altered by climate change and changes in human variables. This study examined the significant effects of vegetation and hydrological, climatic, and human activity changes on the basin’s biological environment and usage of water resources. The Min River Basin (MRB) in the upper Yangtze River served as the study location. Mann–Kendall and Pettitt mutation test techniques were used to examine the features of runoff changes in the basin. The effects of meteorological and anthropogenic factors on runoff and vegetation changes in the MRB from 1982 to 2020 were quantitatively evaluated using the expanded Budyko equation. Following this, spatial and temporal variations in land use and the NDVI in the basin were studied. The results of the research demonstrated the following: (1) The MRB yearly runoff trended downward and that an abrupt change in runoff happened in 1994. (2) Precipitation (Pr) showed a decreasing tendency from the base period (S1) to the change period (S2), but potential evapotranspiration (ET0) showed an increasing trend. (3) From 1985 to 2020, the land use area of the MRB changed rapidly, and the construction land and water area increased by 322% and 58.85%, respectively, while the cultivated land area decreased by 11.72%. (4) From S1 to S2, there was a rising trend in both the NDVI and the Budyko parameter n. The contributions of Pr, ET0, NDVI, and n to the runoff change were 32.41%, 9.43%, 27.51%, and 30.65%, respectively.

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Section: Introductionmentioning

confidence: 99%

Attribution Analysis of Climate Change and Human Activities on Runoff and Vegetation Changes in the Min River Basin

Liu,

Gu,

Wang

et al. 2024

Water

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“…Compared to the period of 1966-1993, Shao et al concluded that the average annual runoff decreased by 49.58% and the annual sediment load decreased by 77.77% in the period of 1994-2016 in the Jialing River [5]. Wang et al concluded that the annual runoff and sediment load showed a downward trend during the period of 1970-2019 in the Min River basin [6]. Berkun et al found that dams reduced water discharge by 7% and suspended sediment by 98% in the rivers located along the southeast Black Sea coast of Turkey and Georgia [7].…”

Section: Introductionmentioning

confidence: 99%

Variations of Runoff-Sediment Processes at Flood Event Scale at a Typical Catchment in the Loess Plateau of China

Fan

Gao

et al. 2023

Water

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The flood season is the main period for runoff and sediment yield, and understanding the variations of runoff and sediment of flood events is of great significance for distinguishing the runoff-sediment processes in the Loess Plateau. In this study, we analyzed the variations of runoff and sediment at the flood event scale in the Qiaogou catchment and investigated the influencing factors. The results showed that runoff and sediment of flood events were mainly produced by rainfall with short rainfall duration and heavy rainfall intensity in the study area. Based on the 28 flood events and corresponding precipitation data from the reference period (P-I, 1986–1989) and the revegetation period (P-II, 2001–2009), we analyzed the variations of runoff-sediment processes at the flood event scale in the Qiaogou catchment, a typical catchment of the Loess Plateau. The results showed that the flood variables were lower in the revegetation period than those in the reference period, except for the flood peak discharge time and the flood duration. The sediment transport capacity per unit runoff depth in the revegetation period was weaker than that in the reference period. The hysteresis analysis indicated that the patterns of the hysteretic loop were dominated by the figure-of-eight pattern and the compound pattern, respectively, in the reference period and revegetation period. Compared to the reference period, runoff and sediment-related variables for flood events of counter-clockwise, figure-of-eight, and compound patterns were less in the revegetation period. With similar rainfall conditions, the main reason for the noticeable difference in runoff and sediment of flood events for the two periods was the variations in vegetation cover. The mentioned results indicated that revegetation performed a critical function in the variations of runoff and sediment at the flood event scale. This study revealed the variations of runoff-sediment processes of flood events and their responses to rainfall and revegetation in a typical catchment of the Loess Plateau, which can provide a basis for decision-making on soil erosion management and sustainable development of the ecological environment in the Loess Plateau.

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Impact of the coupling relationship between marine industry and regional development on the marine economy

Zhang

2024

Journal of Sea Research

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Characterization of the evolution of runoff‐sediment relationship in Min River based on coupling coordination theory

Cited by 4 publications

References 66 publications

Attribution Analysis of Climate Change and Human Activities on Runoff and Vegetation Changes in the Min River Basin

Attribution Analysis of Climate Change and Human Activities on Runoff and Vegetation Changes in the Min River Basin

Variations of Runoff-Sediment Processes at Flood Event Scale at a Typical Catchment in the Loess Plateau of China

Impact of the coupling relationship between marine industry and regional development on the marine economy

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