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Using Budyko-Type Equations for Separating the Impacts of Climate and Vegetation Change on Runoff in the Source Area of the Yellow River

by 1,2, 3 and 3,*
1
Center for Energy, Environment & Economy Research, Zhengzhou University, No. 100 Science Avenue, Gaoxin District, Zhengzhou 450001, China
2
Tourism Management School, Zhengzhou University, No. 100 Science Avenue, Gaoxin District, Zhengzhou 450001, China
3
Key Laboratory of Geographic Information Science, Ministry of Education, East China Normal University, Shanghai 200241, China
*
Author to whom correspondence should be addressed.
Water 2020, 12(12), 3418; https://doi.org/10.3390/w12123418
Received: 26 October 2020 / Revised: 28 November 2020 / Accepted: 1 December 2020 / Published: 4 December 2020
(This article belongs to the Section Hydrology and Hydrogeology)
Assessing the contribution rates of climate change and human activities to the runoff change in the source area of the Yellow River can provide support for water management in the Yellow River Basin. This paper firstly uses a multiple linear regression method to evaluate the contribution rates of climate change and human activities to the vegetation change in the source area of the Yellow River. Next, the paper uses the Budyko hypothesis method to calculate the contribution rates of climatic factors (including precipitation, potential evaporation, and subsequent vegetation changes) and vegetation changes caused by human activities to the runoff change of the Tangnaihai Hydrometric Station. The results showed that: (1) the annual runoff and precipitation in the source area of the Yellow River have a downward trend, while the annual potential evaporation and NDVI (Normalized Difference Vegetation Index) show an increasing trend; (2) The contribution rates of climate change and human activities to the vegetation change in the source area of the Yellow River is 62.79% and 37.21%, respectively; (3) The runoff change became more and more sensitive to changes in climate and underlying surface characteristic parameters; (4) The contribution rates of climatic factors (including precipitation, potential evaporation, and subsequent vegetation changes) and vegetation changes caused by human activities to the runoff change at Tangnaihai Hydrological Station are 75.33% and 24.67%, respectively; (5) The impact of precipitation on runoff reduction is more substantial than that of potential evaporation. View Full-Text
Keywords: climate change; vegetation change; runoff; human activities; the source area of the Yellow River climate change; vegetation change; runoff; human activities; the source area of the Yellow River
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MDPI and ACS Style

Yan, D.; Lai, Z.; Ji, G. Using Budyko-Type Equations for Separating the Impacts of Climate and Vegetation Change on Runoff in the Source Area of the Yellow River. Water 2020, 12, 3418. https://doi.org/10.3390/w12123418

AMA Style

Yan D, Lai Z, Ji G. Using Budyko-Type Equations for Separating the Impacts of Climate and Vegetation Change on Runoff in the Source Area of the Yellow River. Water. 2020; 12(12):3418. https://doi.org/10.3390/w12123418

Chicago/Turabian Style

Yan, Dan; Lai, Zhizhu; Ji, Guangxing. 2020. "Using Budyko-Type Equations for Separating the Impacts of Climate and Vegetation Change on Runoff in the Source Area of the Yellow River" Water 12, no. 12: 3418. https://doi.org/10.3390/w12123418

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