复合指纹技术示踪泥沙来源研究进展

Progresses of composite fingerprinting technique to trace sediment sources

复合指纹技术是研究泥沙来源的有效手段,能反映土壤侵蚀、泥沙输移和沉积特征。该技术基于侵蚀源地的土壤特征筛选具有诊断能力的复合指纹因子,利用质量平衡模型建立源地土壤与淤积泥沙的定量关系,最终获取各侵蚀源地的相对产沙率,以达到因源制宜地制定水土保持方案的目的。综合分析了复合指纹技术的理论基础以及潜在泥沙源地分类、复合指纹因子确定和质量平衡模型应用的研究进展。通过Web of Science核心合集和中国知网数据库获取相关文献,并借助CiteSpace软件对文献计量信息的可视化分析,总结近20年来国内外利用复合指纹技术示踪泥沙来源的现状和热点,并提出该技术的不足和发展趋势。

Composite fingerprinting technique is an effective method to study sediment sources in the watershed,which can reflect the soil erosion,sediment transport and sedimentary character. Composite fingerprints tracing sediment source is to screen out compound fingerprint factors with diagnostic ability based on soil characteristics of the source area,establish quantitative relationship between source materials and sediment by using mass balance model,and finally obtain the relative sediment yield of different potential source areas,so as to achieve the purpose of formulating soil and water conservation plans according to the source conditions. The theoretical basis of composite fingerprinting technique and the research progress were reviewed. Furthermore,the relevant literatures were pulled from Web of Science and China National Knowledge Infrastructure. The status and hot spot about composite fingerprinting technique in tracing sediment sources at home and abroad in recent 20 years were presented visually by CiteSpace software. Finally,the limitation and research trend of this technique were put forward.