Next Article in Journal
Comparative Study on Using Various Recovery Stimulation Methods to Boost Nitrification Recovery in SBRs Inhibited by Hazardous Events
Next Article in Special Issue
Dynamics of Land and Water Resources and Utilization of Cultivated Land in the Yellow River Beach Area of China
Previous Article in Journal
Application of Extraction and Determination Based on Deep Eutectic Solvents in Different Types of Environmental Samples
Previous Article in Special Issue
Study on Water Rights Allocation of Irrigation Water Users in Irrigation Districts of the Yellow River Basin
Article

Trend and Attribution Analysis of Runoff Changes in the Weihe River Basin in the Last 50 Years

Department of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
*
Author to whom correspondence should be addressed.
Academic Editors: Qiting Zuo, Xiangyi Ding, Guotao Cui and Wei Zhang
Water 2022, 14(1), 47; https://doi.org/10.3390/w14010047
Received: 28 November 2021 / Revised: 19 December 2021 / Accepted: 21 December 2021 / Published: 25 December 2021
In recent years, the Weihe River basin has experienced dramatic changes and a sharp decrease in runoff, which has constrained the sustainable development of the local society, economy, and ecology. Quantitative attribution analysis of runoff changes in the Weihe River basin can help to illustrate reasons for dramatic runoff changes and to understand its complex hydrological response. In this paper, the trends of hydrological elements in the Weihe River basin from 1970 to 2019 were systematically analyzed using the M–K analysis method, and the effects of meteorological elements and underlying surface changes on runoff were quantitatively analyzed using the Budyko theoretical framework. The results show that potential evapotranspiration and precipitation in the Weihe River basin have no significant change in 1970–2019; runoff depth has an abrupt change around 1990 and then decrease significantly. The study period is divided into the base period (1970–1989), PΙ (1990–2009), and PII (2010–2019). Compared with the base period, the elasticity coefficients (absolute values) of each element show an increasing trend in PΙ and PII. The sensitivity of runoff to these coefficients is increasing. The sensitivity of the precipitation is the highest (2.72~3.17), followed by that of the underlying surface parameter (−2.01~−2.35); the sensitivity of the potential evapotranspiration is the weakest (−1.72~−2.17). In the PΙ period, the runoff depth decreased significantly due to the combination effects of precipitation and underlying surface with the values of 6.18 mm and 13.92 mm, respectively. In the PII period, rainfall turned to an increasing trend, contributing to the increase in runoff by 11.80 mm; the further increase in underlying surface parameters was the main reason for the decrease in runoff by 22.19 mm. The significant increase in runoff by 8.54 mm because of the increased rainfall, compared with the PΙ periods. Overall, the increasing underlying surface parameter makes the largest contribution to the runoff changes while the precipitation change is also an important factor. View Full-Text
Keywords: Weihe River basin; Budyko framework; runoff changes; climate change; underlying surface parameters; human activities Weihe River basin; Budyko framework; runoff changes; climate change; underlying surface parameters; human activities
Show Figures

Figure 1

MDPI and ACS Style

Xu, J.; Gao, X.; Yang, Z.; Xu, T. Trend and Attribution Analysis of Runoff Changes in the Weihe River Basin in the Last 50 Years. Water 2022, 14, 47. https://doi.org/10.3390/w14010047

AMA Style

Xu J, Gao X, Yang Z, Xu T. Trend and Attribution Analysis of Runoff Changes in the Weihe River Basin in the Last 50 Years. Water. 2022; 14(1):47. https://doi.org/10.3390/w14010047

Chicago/Turabian Style

Xu, Junjie, Xichao Gao, Zhiyong Yang, and Tianyin Xu. 2022. "Trend and Attribution Analysis of Runoff Changes in the Weihe River Basin in the Last 50 Years" Water 14, no. 1: 47. https://doi.org/10.3390/w14010047

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop