NUTRIENT AND METAL ACCUMULATION IN A FRESH-WATER TIDAL MARSH

被引：53

作者：

KHAN, H

BRUSH, GS

机构：

[1] Department of Geography and Environmental Engineering, The Johns Hopkins University, Baltimore, 21218, Maryland

来源：

ESTUARIES | 1994年 / 17卷 / 02期

关键词：

D O I：

10.2307/1352668

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Stratigraphic records from sediment cores collected in a freshwater tidal marsh and in the estuary up stream and downstream from the marsh were used to determine the accumulation of nutrients and trace metals over long time periods. Analysis of pollen and seeds show that the high marsh has formed only within the past 100 yr, following increased sedimentation rates in the area. Variations in nutrient and trace metal accumulations over several decades show that pollutants from agricultural runoff and wastewater discharge are stored to a greater extent in high-marsh than in low-marsh sediments. Greater accumulation rates in the high marsh are probably related to its greater sedimentary organic carbon concentration.

引用

页码：345 / 360

页数：16

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