王浩浩, 岩峰, 林昱奇, et al. 土壤含水率测量与冻土冰-水相态辨识方法研究综述[J]. Bulletin of Geological Science and Technology, 2026, 45(4): 248-268.
DOI:
王浩浩, 岩峰, 林昱奇, et al. 土壤含水率测量与冻土冰-水相态辨识方法研究综述[J]. Bulletin of Geological Science and Technology, 2026, 45(4): 248-268.DOI: 10.19509/j.cnki.dzkq.tb202603037.
土壤含水率测量与冻土冰-水相态辨识方法研究综述
摘要
土壤含水率是刻画土体三相、冰-水多相介质、表征冻融相变过程的核心物理参数,广泛支撑水文循环解析、农田墒情调控、生态演化评估与岩土工程稳定性评价。当前现有综述多局限单一监测尺度或单一测量技术,缺少面向冻土场景冰、水组分定量解耦的系统性对比,难以满足冻土路基、边坡、滑坡等工程冻胀融沉风险精准评估需求。以2005—2026年CNKI、Web of Science核心文献为基础开展文献计量分析,梳理国内外发文时序、核心科研机构与关键词演化规律,明确领域研究热点由传统单点监测逐步转向多源数据智能融合。系统梳理土壤含水率全套监测技术,划分为接触式基准/原位传感、非接触浅层地球物理/遥感两大体系,涵盖烘干基准法、时域反射(TDR)/频域反射(FDR)介电传感、热脉冲、核磁共振(NMR)、探地雷达(GPR)、电阻率成像(ERT)、卫星遥感等手段,从测量原理、适用尺度、误差来源、冻土冰-水辨识能力开展全面对比评价;围绕冻融相变带来的热、介电、核磁、弹性波物性差异,剖析未冻水、冰晶赋存形态对各类传感信号的干扰机制;系统归纳土壤质地、盐分、温度、植被覆盖、设备耦合条件3类测量误差来源,给出配套标定与校正方案。研究表明:烘干法仅可作为标定基准,无法实现长期连续监测;原位传感可点位实时观测,但易受土体理化条件干扰;地球物理、遥感可拓宽监测空间范围,但存在物性多解与尺度偏差;冻土冰、水组分区分是现有监测体系核心短板,单一手段识别可靠性低,必须多源观测交叉验证。对比纯物理机理、纯数据驱动、物理-数据融合3类反演路径,物理约束智能模型兼顾机理解释与预测精度,优势显著。未来应推进天-空-地一体化协同观测网络构建,发展多源传感融合、物理信息神经网络反演技术,实现跨尺度、高精度土壤含水率与冻土冰-水组分同步监测,为寒区地质工程防灾减灾提供理论支撑。
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