卢艳莹,王文科,赵明,马稚桐,闫姿呈,井江楠

• 1:长安大学水利与环境学院
• 2:长安大学旱区地下水文与生态效应教育部重点实验室

摘要(Abstract)：

在干旱半干旱地区，湖盆生态系统是流域安全屏障的重要组成部分，在维持生态格局稳定性方面具有重要作用。然而，近年来湖盆生态环境逐渐退化，其变化过程伴随着复杂的动力学机制。为探究湖盆生态环境空间变异及其驱动力，以鄂尔多斯盆地毛乌素沙地堡寨淖为研究区，采用原位动态监测、样方调查、统计分析与数值模拟相结合的方法，分析了堡寨淖湖盆地区典型植被的分布特征，揭示了地下水文过程与湖岸生态系统的互馈机制。结果表明，堡寨淖湖盆生态系统由4种分带类型组成，分别是湖泊带、湖泊近岸波动带、湖岸滩地带和湖岸风沙滩地带，地下水位埋深从湖泊带至湖岸风沙滩地带呈逐渐增大的趋势，植被类型由喜水耐盐植物过渡到耐旱植被，证实湖岸植被的存在显著地影响地下水流系统的循环模式，湖泊与地下水转化主要发生在局部水流系统，造成地下水对湖泊补给量明显减小。研究结果可以为旱区湖泊波动带-风沙滩地带植被物种多样性以及植被生态系统的修复与保护提供科学依据。

关键词(KeyWords)： 鄂尔多斯盆地;湖盆系统;生态环境变化;驱动力;互馈机制

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学重点基金项目(42130710);; 陕西省重点研发计划项目(2019ZDLSF05-01);; 陕西省自然科学基础研究计划项目(2021JCW-16)

作者(Author): 卢艳莹,王文科,赵明,马稚桐,闫姿呈,井江楠

DOI: 10.19509/j.cnki.dzkq.2022.0080

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