不同土壤中Zn有效态含量与全量关系的统计研究  

Statistical relationship between bio-available Zn and total Zn concentration in soil under non-continous spatio-temporal condition

作　　者：高怀友[1] 师荣光[1] 赵玉杰[1] 

机构地区：[1]农业部环境保护科研监测所,天津300191

出　　处：《环境科学学报》2006年第8期1400-1403,共4页Acta Scientiae Circumstantiae

基　　金：国家科技基础性工作专项资金项目(No.2001DEB30065);国家科技部重点科技攻关项目(No.2004BA608B-01-04)~~

摘　　要：以＂全国重点区域土壤环境质量数据库＂为数据源,依据pH值、有机质含量、阳离子交换量筛选出时间、空间分布不连续的3组402个土壤样品,对土壤中Zn有效态含量与全量的相关性进行了统计分析.结果表明,在pH值5.0～6.5、有机质含量1.0%～2.5%,pH值5.0～6.5、有机质含量2.5%～4.0%,pH值7.5～8.5、有机质含量1%～2.5%等3类土壤条件下（阳离子交换量均介于15～30cmol·kg^-1）,土壤中的Zn有效态含量与全量之间均存在显著的相关性,且均能在Zn有效态含量与全量之间建立起有意义的回归方程.Bio-available Zn and total Zn data （mg· kg^-1 ） of 402 soil samples in 3 subgroups with non-continous spatio-temporal distribution were chosen from a key regional soil environmental quality monitoring database in term of pH, organic matter concentration （ OMC）, cation exchange capacity （ CEC ）. The statistical relationship between bio-available Zn and total Zn concentration was studied. Results showed that there were evident correlations between soil bio-available Zn and total Zn under 3 types of soil conditions with CEC range 15 - 30 cmol·kg^-1 , e.g. （ 1 ） pH range 5.0 - 6.5 with OMC range 1.0% -2.5%, （2） pH range 5.0-6.5 withOMC range 2.5% -4.0%, （3） pH range 7.5 -8.5 with OMC range 1.0%-2.5%. The curvilinear regression function based on bio-available Zn and total Zn are established.

关 键 词：相关性 ZN 有效态含量 全量 

分 类 号：X131.3[环境科学与工程—环境科学]