Modelling interannual variations in catchment evapotranspiration considering vegetation and climate seasonality using the Budyko framework

Wang, Yaqin; Luo, Yi; Shafeeque, Muhammad; Zhou, Meilin; Li, Hongyu

doi:10.1002/hyp.14118

Cited by 6 publications

(1 citation statement)

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“…Ning et al (2017) reported that the underlying surface parameter n is closely related to the climate anomaly index. Wang et al (2021) reported that it is related to, among others, the Arctic Oscillation and El Niño. In addition, human activities are closely related to the underlying surface parameter n. Jiang et al (2015) found that it is related to agricultural irrigation area.…”

Section: Introductionmentioning

confidence: 99%

Attribution analysis of runoff evolution in Kuye River Basin based on the time-varying budyko framework

Huang

Wang

et al. 2023

Front. Earth Sci.

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The underlying surface parameters in the Budyko framework (such as parameter n in the Choudhury–Yang equation) are crucial for studying the relationship between precipitation, evapotranspiration, and runoff. It is important to accurately quantify the influence of climate and human activities on the evolution of underlying surface characteristic parameters. However, due to the spatiotemporal heterogeneity of underlying surface parameters, it is often difficult to accurately quantify these relationships. In this study, taking the Kuye River Basin located in the northern Loess Plateau as the research object, we first used trend analysis and non-linear regression methods to estimate the evolution characteristics of runoff and underlying surface parameter n. We then determined the contribution of runoff changes by using the elasticity coefficient method under the 9-year moving average window. The results showed that: 1) the Kuye River Basin runoff underwent a sudden change in 1997, and the complex human activities are the main reasons for the sharp runoff decrease. 2) In addition to precipitation and potential evapotranspiration, temperature changes will alter the basin’s underlying surface parameters, ultimately changing the runoff. Moreover, climate change first inhibited and then promoted the runoff reduction trend. 3) Human activities, represented by changes in vegetation coverage and coal mining, considerably influenced runoff evolution in Kuye River Basin. More importantly, the change of runoff in the Kuye River Basin caused by coal mining is approximately four times that of the normalized vegetation index. This study can improve the applicability of the Budyko framework in the Loess Plateau sub-basin and provide scientific guidance for water resource management.

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Section: Introductionmentioning

confidence: 99%