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高怀友,师荣光,赵玉杰.不同土壤中Zn有效态含量与全量关系的统计研究[J].环境科学学报,2006,26(8):1400-1403
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
- 基金项目：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)
- 作者
- 单位
- 高怀友
- 农业部环境保护科研监测所, 天津 300191
- 师荣光
- 农业部环境保护科研监测所, 天津 300191
- 赵玉杰
- 农业部环境保护科研监测所, 天津 300191
- 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.
- Abstract：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 with OMC 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.
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