摘要
风化盐析是影响土遗址最为严重的病害之一。了解不同深度处土遗址可溶盐的含量以及变化规律可为土遗址的盐析病害提供理论依据和技术支撑。为此,本实验采用有机玻璃土柱装置和应用EM50传感器探头监测土柱不同深度处的含水率、电导率的变化规律,并结合实验室分析测定了不同时间土柱表面的含盐种类以及含盐量、不同深度处的含盐量等。结果表明,不同深度处土样的含水率越小电导率越大,且土壤表面的含水率最小,电导率最大;利用离子色谱法测定结果表明,除K+之外,Na^+,Mg^(2+),Ca^(2+),Cl-and SO_4^(2-)的含量随深度的变化趋势与含盐量随深度的变化趋势一致。本研究可为土遗址盐析病害的防治提供理论参考。
The damage caused by the salt weathering is one of the biggest problems at soil ruins.Understanding the rules of soluble salt content and concentration in soils can provide theoretical and technical support for soil site conservation.Soil columns were prepared in plexiglass containers having EM50 detectors to study the moisture content and conductivity of the soil column longitudinally at different depths.The results were used to understand the type and migration of various salts in the soil column.It was found that the lower the moisture content,the greater the conductivity.Ion chromatography showed that Na^＋,Mg^2＋,Ca^2＋,Cl^-and SO4^2- contents all change together with salinity at various depths.This study provides a theoretical reference for the soil ruins management.
出处
《文物保护与考古科学》
北大核心
2015年第A01期56-63,共8页
Sciences of Conservation and Archaeology
基金
国家科技部支撑计划资助(2012BAK14B02)
关键词
土柱
可溶盐运移
盐分含量
Soil column
Soluble salt movement
Salt content
