水保所知识产出(1956---)知识库

泥沙来源研究作为土壤侵蚀研究的关键内容之一，对水土保持措施的科学布设具有重要意义。复合指纹
识别法是目前研究泥沙来源的较先进方法之一，在泥沙来源研究中具有较大的应用潜力。然而，颗粒分选作用
对运用复合指纹识别法判别沉积物来源的准确性有重大影响。加之，有机质等代表的土壤属性（指纹因子）随颗
粒分选在不同粒径范围发生富集或贫化也对源地的正确分类与贡献的准确估算有重要影响。因此，本文基于前
人对复合指纹识别水力侵蚀泥沙来源的相关研究，总结侵蚀泥沙中指纹因子的富集或贫化、颗粒分选对指纹因
子的颗粒粒径分布特征、指纹因子载体颗粒粒径范围选择、土壤团聚体对泥沙来源识别的影响、模型中颗粒分
选和有机质因子的量化等方面的研究成果，明确颗粒分选和有机质因子对复合指纹识别泥沙来源的影响，有利
于正确运用复合指纹识别法准确判定泥沙来源。

 Sediment source study is one of the key aspects of soil erosion research, which is significant for the
implementation of erosion control measures. The composite fingerprints, which has good utilization potential-
ity, is one of the most advanced approaches for sediment source study to data. However, particles sorting has
significant influence on accuracy of sediment source discriminant based on the composite fingerprints. Addi-
tionally, the properties of soil (such as organic matter), using as fingerprints enrich or deplete in some grain
size ranges, which further affect the correctness of sediment source classification and the discriminating accur-
acy of sediment sources. Thus, this study focused on sediment formed by water erosion, summarized the en-
riching or depleting characteristics of fingerprints, distribution of fingerprints in different grain size ranges, se-
lection of particles size ranges for fingerprints, influence of aggregates on sediment source discrimination, and
correction of particle sorting and organic matter content in the estimation models for sediment sources. This re-
view is helpful for insightful understanding to the effect of particle sorting and organic matter on sediment
source study using the composite fingerprints.