测绘通报 ›› 2026, Vol. 0 ›› Issue (9): 89-94,137.doi: 10.13474/j.cnki.11-2246.2026.0913

• 学术研究 • 上一篇    下一篇

龙羊峡水库两侧沙区沙尘天气时空演变特征及驱动因素分析

张乐春1, 张登山2, 董凤翎3, 拓万兵4   

  1. 1. 青海大学地质工程学院, 青海 西宁 810016;
    2. 青海大学省部共建三江源生态与高原农牧业国家重点实验室, 青海 西宁 810016;
    3. 青海省地理空间信息技术与应用重点实验室, 青海 西宁 810008;
    4. 青海理工学院工学院, 青海 西宁 810016
  • 收稿日期:2026-01-14 发布日期:2026-10-09
  • 通讯作者: 张登山。E-mail:dshzhang2008@sina.com
  • 作者简介:张乐春(1975—),男,博士,讲师,主要从事风沙运动与干旱区地貌研究。E-mail:zlclccee@sina.com
  • 基金资助:
    青海省科技专项(海南州高寒沙区综合防沙治沙关键技术研发与综合示范)

Analysis of the spatio-temporal evolution characteristics and driving factors of sand-dust weather in the sandy areas on both sides of the Longyangxia Reservoir

Zhang Lechun1, Zhang Dengshan2, Dong Fengling3, Tuo Wanbing4   

  1. 1. College of Geological Engineering, Qinghai University, Xining 810016, China;
    2. State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China;
    3. Qinghai Provincial Key Laboratory of Geospatial Information Technology and Application, Xining 810008, China;
    4. College of Engineering, Qinghai Institute of Technology, Xining 810016, China
  • Received:2026-01-14 Published:2026-10-09

摘要: [目的]本文旨在阐明龙羊峡水库周边沙区风沙活动的动力机制。[方法]以水库两侧塔拉滩与木格滩沙区为对象,基于2019—2023年冬春季气象与遥感数据,引入输沙势(DP)作为综合风动力指标,结合植被覆盖度、降水量等因子,系统分析沙尘天气的时空特征及其成因。[结果]①研究区冬春季沙尘天数整体呈上升趋势,空间分异显著,塔拉滩沙尘活动强度(月均1.83 d)远高于木格滩(月均0.17 d);②沙尘天数与DP呈高度正相关,塔拉滩两者的Pearson相关系数r=0.794,木格滩r=0.857;③植被覆盖度与沙尘天数呈较低至低负相关,塔拉滩与木格滩的相关系数分别为-0.343与-0.186。[结论]该区域沙尘天气主要受风力驱动,DP较风速或起沙风频率能更全面地表征风沙动力过程,尤其在风力整体较弱的木格滩地区更具解释力。

关键词: 沙尘天气, 输沙势, 植被覆盖度, 降水量, 龙羊峡水库

Abstract: [Purposes] This study aimes to elucidate the dynamic mechanisms of wind-sand activities around the Longyangxia Reservoir.[Methods]Focusing on the Talatan and Mugetan sandy areas on both sides of the reservoir,this research systematically analyzed the spatiotemporal characteristics and driving factors of dust weather based on meteorological and remote sensing data from the winter and spring seasons of 2019—2023.The sand drift potential (DP)was introduced as a comprehensive wind dynamic indicator,combined with factors such as vegetation coverage and precipitation.[Findings] ①The number of dust days in the study areas showed an overall increasing trend during winter and spring,with significant spatial heterogeneity.Dust activity intensity in Talatan (monthly average of 1.83 d)was much higher than that in Mugetan (monthly average of 0.17 d).②Dust days were highly positively correlated with DP,with Pearson correlation coefficients of r=0.794 in Talatan and r=0.857 in Mugetan.③Both vegetation coverage and precipitation showed low to moderately low negative correlations with dust days,with correlation coefficients of -0.343 and -0.186 in Talatan and Mugetan respectively.[Conclusions] Dust weather in this region is primarily driven by wind forces.Compared to wind speed or frequency of sand-driving winds,DP provides a more comprehensive representation of the wind-sand dynamic process,particularly offering superior explanatory power in areas with generally weaker wind forces,such as the Mugetan area.

Key words: dust weather, sand drift potential, vegetation coverage, precipitation, Longyangxia Reservoir

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