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研究结果表明 ,土壤有机质和全氮与 <1 0μm土壤颗粒相关系数分别为 0 .63 1 4和 0 .6750 ,与 <1 μm粘粒的相关系数分别达到 0 .72 54和 0 .73 2 9;有机质和全氮在泥沙中的富集现象主要由侵蚀泥沙 <1 μm粘粒富集造成 ;坡度与侵蚀泥沙粘粒、有机质和全氮的富集率的相关系数分别为 -0 .983 2、-0 .93 95和-0 .81 46。
The results showed that the correlation coefficients of soil organic matter and total nitrogen with <10μm soil particles were 0.63 1 4 and 0.6750 respectively, and the correlation coefficients with 0-172μm and 0 .73 2 9 ; The enrichment of organic matter and total nitrogen in sediment was mainly caused by the accumulation of <1 μm clay; the correlation coefficient between the slope and the erosion clay, organic matter and total nitrogen enrichment was -0 .983 2, -0 .93 95 and -0 .81 46.