The relationship between groundwater and natural vegetation in Qaidam Basin

Xue-ya Dang; Na Lu; Xiao-fan Gu; Xiao-mei Jin

doi:10.19637/j.cnki.2305-7068.2021.04.007

Volume 9 Issue 4

Dec. 2021

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Article Navigation > Journal of Groundwater Science and Engineering > 2021 > 9(4): 341-349

Dang XY, Lu N, Gu XF, et al. 2021. The relationship between groundwater and natural vegetation in Qaidam Basin. Journal of Groundwater Science and Engineering, 9(4): 341-349 doi: 10.19637/j.cnki.2305-7068.2021.04.007

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The relationship between groundwater and natural vegetation in Qaidam Basin

doi: 10.19637/j.cnki.2305-7068.2021.04.007

Xue-ya Dang^{1, 2, 3
,
,},
Na Lu^{1, 2, 3},
Xiao-fan Gu^{1, 2, 3},
Xiao-mei Jin⁴

1.
Xi 'an Center of China Geological Survey, Xi'an 710054, China
2.
Key Laboratory for Groundwater and Ecology in Arid and Semi-arid Areas, Xi'an 710054, China
3.
Shaanxi Province Engineering Research Centre of Water Resources and Environment, Xi'an 710054, China
4.
China University of Geosciences (Beijing), Beijing, 100083, China

More Information

Corresponding author: 474767944@qq.com
Received Date: 2021-08-05
Accepted Date: 2021-10-23
Publish Date: 2021-12-15

Abstract

Abstract

To accurately evaluate ecological risks trigged by groundwater exploitation, it must be clarified the relationship between vegetation and groundwater. Based on remote sensing data sets MOD13Q1, groundwater table depth (WTD) and total dissolved solids (TDS), the relationship between groundwater and natural vegetation was analyzed statistically in the main plain areas of Qaidam Basin. The results indicate that natural vegetation is groundwater-dependent in areas where WTD is less than 5.5 m and TDS is less than 7.5 g/L. Aquatic vegetation, hygrophytic vegetation and hygrophytic saline-alkali tolerant vegetation are mainly distributed in areas with WTD <1.1 m. Salt-tolerant and mesophytic vegetation mainly occur in areas with WTD of 1.4-3.5 m, while the xerophytic vegetation isprimarily present in areas where WTD ranges from 1.4 m to 5.5 m. Natural vegetation does not necessarily depend on groundwater in areas with WTD >5.5 m. For natural vegetation, the most suitable water TDS is less than 1.5 g/L, the moderately suitable TDS is 1.5-5.0 g/L, the basically suitable TDS is 5.0-7.5 g/L, and the unsuitable TDS is more than 7.5 g/L.
- Qaidam Basin,
- Natural vegetation,
- Water table depth,
- Total dissolved solids,
- Dependencies

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References(24)

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