The impacts of climate and land use changes on water yield in the Beisan River Basin

LI Wenjing; WANG Sheng; LI Qing; WU Taoli; ZHAO Xinyue

doi:10.3969/j.issn.1000-5641.2021.04.012

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LI Wenjing, WANG Sheng, LI Qing, WU Taoli, ZHAO Xinyue. The impacts of climate and land use changes on water yield in the Beisan River Basin[J]. Journal of East China Normal University (Natural Sciences), 2021, (4): 99-108. doi: 10.3969/j.issn.1000-5641.2021.04.012

Citation:

LI Wenjing, WANG Sheng, LI Qing, WU Taoli, ZHAO Xinyue. The impacts of climate and land use changes on water yield in the Beisan River Basin[J]. Journal of East China Normal University (Natural Sciences), 2021, (4): 99-108. doi: 10.3969/j.issn.1000-5641.2021.04.012

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The impacts of climate and land use changes on water yield in the Beisan River Basin

doi: 10.3969/j.issn.1000-5641.2021.04.012

1.
Geography Science Institute, Shanxi Normal University, Linfen Shanxi　041000, China
2.
Hebei Engineering Research Center for Geographic Information Application, Institute of Geographical Sciences, Hebei Academy of Sciences, Shijiazhuang　050011, China

Received Date: 2020-05-12
Publish Date: 2021-07-25

Abstract

Abstract

The Beisan River Basin is an important water source for the Jing-Jin-Ji region. It is important to analyze the temporal and spatial changes in basin water yield and the corresponding driving factors to maintain the security and stability of the ecosystem. Based on meteorology, land use, and soil data, the water production module of the InVEST model was used to analyze the temporal and spatial change characteristics of water yield in the Beisan River Basin from 2000 to 2017. The contribution of climate and land use change to the change in water yield was explored through scenario simulation. The results showed that from 2000 to 2017, the average annual water yield of the Beisan River Basin was 17.8 × 10⁸ m³; the annual change showed an increasing trend at a rate of 1.03 × 10⁸ m³/a. The spatial distribution pattern of water yield was high in the south and low in the north. The average depth of water production in the south and north was 70.85 mm and 8.83 mm, respectively. The high value area of water yield was transferred from the southeast Juhe River and Huanxiang River Basin to the southwest Wenhe River and Yongdingbei River Basin. The water supply per unit area, ranked from high to low, across different land use types showed the following order: construction land > cultivated land > water area > unused land > forest land > grassland. From 2000 to 2015, the water yield of cultivated land was the highest, accounting for 51.3% of the total water yield of the basin, while that of construction land increased the most, reaching 144.3%. Scenario simulation results showed that climate and land use change contributed 70.7% and 29.3%, respectively, to the water yield increase, and the surge in precipitation played a leading role.
- water yield,
- InVEST model,
- ecosystem services,
- the Beisan River Basin

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References(24)

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