森林沼泽景观区水系沉积物中腐殖作用的地球化学特征  

GEOCHEMICAL CHARACTERISTICS OF HUMIFICATION IN STREAM SEDIMENTS OF THE FOREST SWAMP LANDSCAPE AREA

作　　者：杨少平[1] 刘还林[2] 刘新华 王会锋 孔牧[1] 刘华忠[1] 徐仁廷[1] 

机构地区：[1]中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000 [2]内蒙古自治区地质调查院,内蒙古呼和浩特010000 [3]中石油长城钻探工程分公司录井分公司地质检测中心,辽宁盘锦124010 [4]陕西省地质调查院,陕西西安710000

出　　处：《物探与化探》2009年第5期529-532,共4页Geophysical and Geochemical Exploration

摘　　要：水系沉积物是森林沼泽区的主要表生介质之一,对其中的有机碳、胡敏酸、富里酸和胡敏素分布状况以及富里酸相和胡敏酸相Cu、Pb、Zn、Ag、Sb、Mn、Mo、Ni、As、Hg的分布特征进行了研究。发现有机质主要由胡敏素组成,其含量可占有机质的2/3左右,地球化学活性很强的富里酸和胡敏酸占腐殖质总量1/3左右。影响半数多元素在水系沉积物中地球化学活动性的主要腐殖酸是富里酸,而影响Hg、Ag、Pb、Sb的是胡敏酸。Stream sediments constitute one of the main surface media. The compositions of organic carbon, fulvic acid, humic acid and humin in stream sediments were analyzed, and the distribution characteristics of Cu, Pb, Zn, Ag, Sb, Mn, Mo, Ni, As and Hg in fulvic acid and humie acid were investigated. The results show that humin occupies two thirds of the organic matter, which is the dominant part of the organic matter, whereas fulvic acid and humic acids occupy one third of the organic matter, which exert strong geochemical effects. Geochemical activities of most elements in stream sediments are affected by fulvic acid, but Hg, Ag, Pb and Sb are affected by humic acid.

关 键 词：森林沼泽景观 水系沉积物 腐殖作用 地球化学特征 

分 类 号：P632[天文地球—地质矿产勘探]