SOURCES AND TRANSFORMATION OF DISSOLVED ORGANIC-CARBON IN THE HARP LAKE FORESTED CATCHMENT - THE ROLE OF SOILS

被引：50

作者：

TRUMBORE, SE

SCHIFF, SL

ARAVENA, R

ELGOOD, R

机构：

[1] LAWRENCE LIVERMORE NATL LAB,CTR ACCELERATOR MASS SPECTROMETRY,LIVERMORE,CA 94550

[2] UNIV WATERLOO,CTR GROUNDWATER RES,WATERLOO N2J 3E6,ON,CANADA

来源：

RADIOCARBON | 1992年 / 34卷 / 03期

关键词：

D O I：

10.1017/S0033822200063918

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The C-14 content of dissolved organic carbon (DOC) in streams, soil water and groundwaters in the Harp Lake catchment in Ontario, Canada, reflect a mixture of DOC sources, including both contemporary plant material and C-14-depleted soil organic matter. The concentration and isotopic content of DOC in streams is highly variable, reflecting the complex flow path of the source water entering the streams. The characteristics of groundwater DOC are set in the soil column, either through DOC production in the deeper soil layers, or through preferential decomposition and/or sorption of C-14-enriched DOC components from percolating waters. We estimate the relative magnitudes of decomposition, transport and sorption as sinks for DOC produced in forested catchment soils.

引用

页码：626 / 635

页数：10

共 29 条

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