STRONTIUM ISOTOPES IN TREES AS AN INDICATOR FOR CALCIUM AVAILABILITY

被引：72

作者：

ABERG, G

JACKS, G

WICKMAN, T

HAMILTON, PJ

机构：

[1] Department of Land, Water Resources Royal Institute of Technology

[2] SURRC, East Kilbride Glasgow

来源：

CATENA | 1990年 / 17卷 / 01期

关键词：

D O I：

10.1016/0341-8162(90)90011-2

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The increasing acidification and impoverishment of soil poses a great environmental problem today and in the future and is exemplified by the decreased availability of calcium in the soil pool. Unfortunately, budgeting the inputs and outputs of calcium in the soil-vegetation ecosystem is a very laborious task. Some of the fluxes are internal in the ecosystem and cannot be measured explicitely, like weathering of primary minerals. However, since strontium and calcium exhibit similar geochemical behaviour, it is possible to make an estimation of the calcium content in different media in the soil-vegetation eco-system using natural strontium isotopes. Preliminary analyses of water (precipitation, throughfall, runoff, soil-water), soil (mineral matter) and biological material (trees, mussel-shells) show that the use of the strontium isotope ratio 87Sr/86Sr is a powerful tool in estimating and understanding environmental changes. © 1990.

引用

页码：1 / 11

页数：11