物探与化探2016，Vol.40Issue(1)：148-153,6.DOI:10.11720/wtyht.2016.1.26
安溪土壤—茶叶铅含量关系与土壤铅临界值研究
The relationship of lead concentration between soils and tea leaves and the critical value of lead for soil in Anxi, Fujian Province
摘要
Abstract
Top ( 0~20 cm) and sub-layer ( 20~40 cm) soil samples as well as corresponding tea leaf samples were collected at seventy-nine tea gardens in Anxi County and other areas, Fujian Province. Lead concentrations of tea leaves as well as soil geochemical indica-tors including macro-and micro-elements were determined. There is a significant correlation between the lead concentration of tea leav-es and that of the corresponding soils. Therefore, a linear regression model was established, and transfer factors( Ft ) for lead from soils to tea leaves was calculated. It seems that Ft values are affected by the concentrations of lead, manganese, phosphorus and zinc in soils. The critical value of soil lead for tea production was derived from the regression model and Ft value according to tea quality crite-ria. The result demonstrates that the lead values of tea uptake from soils would not exceed tea quality criteria (5×10-6) under normal soil lead concentration. Multivariable linear regression model can preferably explain the relationship between lead concentration in tea leaves and soil physicochemical indicators.关键词
茶叶/土壤/铅/迁移系数/安全临界值/线性回归分析/福建安溪Key words
tea leaf/soil/lead/transfer factor/critical value/linear regression analysis/Anxi/Fujian分类
天文与地球科学引用本文复制引用
周国华,孙彬彬,贺灵,白金峰,曾道明,候树军,刘占元..安溪土壤—茶叶铅含量关系与土壤铅临界值研究[J].物探与化探,2016,40(1):148-153,6.基金项目
中国地质调查局地质矿产调查与评价子项目(12120113002400) （12120113002400）
