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Effect of highway greenbelt constrution on groundwater flow in a semi-arid region

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Abstract

The highway greenbelt, vigorously promoted in arid and semi-arid areas, has obvious impacts on beautifying the environment, absorbing dust, reducing noise, and maintaining soil and water. Moreover, it affects the characteristics of how water resources are distributed and the regional groundwater cycle. However, the impact of highway greenbelt construction on groundwater flow in semi-arid areas is unknown. The Hubao Highway greenbelt in the north part of the Tumochuan Plain was studied as an example. The paper combines field investigation, remote sensing and mathematical modeling to quantify the impact of highway green space construction on regional groundwater circulation. The results showed that: Trees, shrubs and grasses were the dominant vegetation types in the landscaped area, accounting for 42.17% of the studied area. The total evapotranspiration water consumption of the green belt during the growing season was 471.35 × 104m3. The groundwater recharge in the study area was mainly derived from the lateral recharge in front of the mountain, and the main discharge was the evapotranspiration water consumption of the green belt. This evapotranspiration accounts for 3.31% of the total groundwater recharge. Under the condition that the recharge in front of the mountain remains constant, the evapotranspiration water consumption of the green belt will still have an increasing trend in the future. Appropriate planting of poplar and other high water-consuming trees may be the best way to mitigate the adverse effects of greenbelt evapotranspiration on groundwater resources. The results of this study provide valuable insights for environmental protection and infrastructure development in similar areas.

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(Adapted from Dong et al., 2022)

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Acknowledgements

This research was jointly funded by the National Natural Science Foundation of China (42267025, 41702250).

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M.Xia.: Conceptualization, Methodology, Funding Acquisition, Validation, Formal Analysis, Investigation, Data Curation, Writing—Original Draft and Visualization. S.D.: Writing—Review and Editing, Resources, Supervision, Project Administration and Funding acquisition. M.M.: Software, English Editing. L.L.: Writing – review & editing. C.J.: Writing – review & editing.

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Correspondence to Shaogang Dong.

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Xia, M., Dong, S., Ma, M. et al. Effect of highway greenbelt constrution on groundwater flow in a semi-arid region. Environ Geochem Health 46, 228 (2024). https://doi.org/10.1007/s10653-024-02008-0

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  • DOI: https://doi.org/10.1007/s10653-024-02008-0

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