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研究论文

摘要：测定了中国东部地区主要河流河水、悬浮物和沉积物中腐殖酸含量,研究了该地区河水腐殖酸含量的地域分异规律,并探讨了河水腐殖酸的可能来源。结果表明,所研究河流河水腐殖酸含量在0.9—14.4mg/L范围内,中值为4.16mg/L,并有北高南低的一般趋势。黑龙江上游及松花江北部支流的河水腐殖酸含量在8.5mg/L以上,滦河以北其它地区在3.9—6.4mg/L范围内,黄河以南区域则在0.9—3.3mg/L之间,所研究地区河水中的腐殖酸为混合起源的,它既来自河流悬浮物和沉积物中腐殖酸的释放,又来自流域表土中腐殖酸的淋溶。

Abstract：The concentrations of stream humic substances in the east of China were determined and were found in a range of 0.9 to 14.4 mgL^-1 with a medium value of 4.56 mgL^-1. The contents of stream humic substances generally decrease from north to south, a tread similar to humic substances contents in aquatic sediments and soils. The results of multiple regression analysis and path analysis showed that the stream humic substances are derived both from autochthonous and allochthonous sources.