我国东部冲积平原区水成土壤元素背景值地域分异规律  

REGIONAL DISTRIBUTION OF TRACE ELEMENT CONTENTS IN SOILS FROM THE ALLUVIAL PLALNS OF EASTERN CHINA

作　　者：陈静生[1] 王学军[1] 

机构地区：[1]北京大学城市与环境学系

出　　处：《环境科学学报》1994年第1期11-16,共6页Acta Scientiae Circumstantiae

摘　　要：从气候条件、母质物质组成的差异以及河流上下游物质之间的联系等角度，讨论了我国东部冲积平原区土壤中１３种元素的地理分布趋势及影响因素．研究表明，大多数元素具有明显的南北向地域分布趋势，这种趋势是地带性和非地带性因素共同决定的，而以非地带因素更重要．此外，东部平原土壤与相应主要河流上游侵蚀区土壤微量元素含量具有很好的共轭关系．In this paper,the authors discuss the regional distribution,as well asthe relationships between the erosional areas and sedimentary areas of 13 tra-ce element contents in Chinese eastern plain.The effects of climate condition,parent materials on the regional distribution of trace element contents werealso discussed.The results showed that contents of most elements expressedsignificant north-south regional distribution trend.This trend were formed byzonal and non-zonal effects,and the latter is more important.Besides,greatinheritance exists between trace element contents from soils in erosional areasand sedimentary areas of eastern China.

关 键 词：土壤 微量元素 地理分布 东部平原 

分 类 号：S153.61[农业科学—土壤学]