戈壁近地表风压梯度对砾石覆盖度的分层响应

廖承贤; 王海兵; 杨皓钦; 郭晓敏; 张雪

doi:10.3799/dqkx.2025.080

Volume 50 Issue 9

Sep. 2025

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Article Navigation > Earth Science > 2025 > 50(9): 3521-3529

Liao Chengxian, Wang Haibing, Yang Haoqin, Guo Xiaomin, Zhang Xue, 2025. Stratified Response Characteristics of Near-Surface Wind Pressure Gradient to Gravel Coverage over Gobi. Earth Science, 50(9): 3521-3529. doi: 10.3799/dqkx.2025.080

Citation:

Liao Chengxian, Wang Haibing, Yang Haoqin, Guo Xiaomin, Zhang Xue, 2025. Stratified Response Characteristics of Near-Surface Wind Pressure Gradient to Gravel Coverage over Gobi. Earth Science, 50(9): 3521-3529. doi: 10.3799/dqkx.2025.080

Citation:

Liao Chengxian, Wang Haibing, Yang Haoqin, Guo Xiaomin, Zhang Xue, 2025. Stratified Response Characteristics of Near-Surface Wind Pressure Gradient to Gravel Coverage over Gobi. Earth Science, 50(9): 3521-3529. doi: 10.3799/dqkx.2025.080

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Stratified Response Characteristics of Near-Surface Wind Pressure Gradient to Gravel Coverage over Gobi

doi: 10.3799/dqkx.2025.080

Liao Chengxian^{1
,
,},
Wang Haibing^{1, 2, 3
,
,},
Yang Haoqin¹,
Guo Xiaomin¹,
Zhang Xue¹

1.
College of Desert Control Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
2.
State Key Laboratory of Water Engineering Ecology and Environment in Arid Area, Inner Mongolia Agricultural University, Hohhot 010018, China
3.
Inner Mongolia Key Laboratory of Aeolian Physics and Desertification Control Engineering, Hohhot 010018, China

Received Date: 2025-02-25
Publish Date: 2025-09-25

Abstract

Abstract

The Gobi Desert is a critical source area for cross-border dust transport, where the interaction between surface gravel coverage and the near-surface wind pressure gradient exerts a significant influence on the dust emission mechanism. Through two-phase flow wind tunnel experiments, the near-surface wind field characteristics of the Gobi were simulated. Nonlinear regression models and two-factor analysis were employed to reveal the regulatory mechanisms. (1) The wind pressure increase exhibits stratified variation, with the wind pressure gradient decaying linearly or exponentially with increasing height. (2) Gravel coverage significantly regulates the vertical differentiation of the wind pressure gradient. (3) Incoming wind speeds directly controls the intensity of the wind pressure gradient, while gravel coverage induces energy absorption and momentum transfer. Surface heterogeneity in the Gobi Desert dynamically regulates wind pressure gradient through the interplay between near-surface roughness and wind forces. Maintaining optimal gravel coverage (40%-50%) effectively balances aeolian erosion control and momentum transfer, providing a mechanistic foundation for refining dust emission models and developing precision windbreak-sand stabilization strategies in arid ecosystems.
- Gobi,
- wind pressure gradient,
- gravel coverage,
- dynamic regulation,
- wind erosion,
- wind speed

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References(42)

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Stratified Response Characteristics of Near-Surface Wind Pressure Gradient to Gravel Coverage over Gobi

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