土壤中砾石含量的测定方法研究进展

石质土壤中含有大量砾石,大量砾石的存在会影响土壤理化特性和水力特性。土壤中砾石含量的研究会影响土石介质的生产力评估、水文及风化过程的研究水平。本文主要介绍了国内外土壤中砾石含量的现有测定方法,对环刀取样法、挖坑法、Viro插钎法,γ射线法、探地雷达及电阻率断层扫描技术的实际应用进行了讨论。在实际研究中应根据实际情况选择合适的砾石含量测定方法。土壤中砾石含量的测定应该引起国内相关研究的重视,为土壤研究提供重要信息并为土壤学研究水平的提高提供帮助。

Methodology on rock fragments content evaluation: A review

Soils may contain large numbers of rock fragments in the soil matrix.Rock fragments affect physiochemical soil properties and hydraulic soil properties by their presence in soil matrix.Thus,quantifying the rock fragments can influence the assessment of productivity and research on hydraulic properties of stony soils.There are different methods now available for measuring the rock fragments content.The methodology and application of ring sampler,digging pits,Viro rod,γ attenuation and electrical resistivity tomography were discussed in this paper.Method should be favored according to the case of the studying field.More attentions should be paid to the measurement of rock fragments content,aiming at providing important information for soil study and improving the research level of soil science.