%0 Journal Article
%T MAPPING OF SOIL BACKGROUND CONTENT IN BEIJING AREA<br>北京地区土壤背景值图的编制
%A Li Tmgfang
%A <br>李廷芳
%A 刘宝元
%J 地理学报
%D 1989
%I 
%X Mapping of soil background content in Beijing area is comprehensively and systematically presented in this paper. Basic data in mapping soil background content has 302 analytical data of soil elements and regional distribution which are mapped with computer plotting and factor analysis. The soil background content map is in statistic form and divided into grades; Criteria for dividing grades are parent rock in mountains and soil parent material and soil texture in plain area. Counties and districts are used as mapping units. Significant test is used by dividing grades of background content Maximum values of statistic error of background content in soil is mercury element in brown earth and cha soil, 18.4% and 12.9% respectively: All others are below 10%.
%K Soil background content
%K Mapping unit
%K Statistic map of grades<br>北京地区
%K 成土母质
%K 土壤质地
%K 母岩
%K 区域分布
%K 分级
%K 平原地区
%K 土壤背景值
%K 显著性检验
%K 制图
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=869B153A4C6B5B85&jid=F7B5B947C24B9D649491012214E4BEF4&aid=0CDA2D5F24033DDE&yid=1833A6AA51F779C1&vid=1AE5323881A5ECDC&iid=CA4FD0336C81A37A&sid=708DD6B15D2464E8&eid=659D3B06EBF534A7&journal_id=0375-5444&journal_name=地理学报&referenced_num=2&reference_num=0