SPATIAL VARIABILITY OF CHEMICAL-COMPOUNDS RELATED TO S-CYCLING IN 2 MOORLAND POOLS

被引:7
作者
MARNETTE, ECL
STEIN, A
机构
[1] Department of Soil Science and Geology, Agricultural University Wageningen, 6700 AA Wageningen
关键词
SPATIAL VARIABILITY; GEOSTATISTICS; SULFUR CYCLING; MOORLAND POOLS; SAMPLING SCHEME;
D O I
10.1016/0043-1354(93)90064-O
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Underwater sediments of two Dutch moorland pools, Gerritsfles and Kliplo, have been compared statistically with respect to total S and S-related sediment contents. Horizontal and vertical distribution of S in the two pools are significantly different from each other. Statistical analyses indicate that spatial variation of S in Gerritsfles is probably due to variation in inorganic S contents and in Kliplo due to variations in organically bound S. As evidenced by this study, a choice for a measurement unit like mass fraction (g g-1) or volumetric Mass (mg cm-3) is crucial for the interpretation of spatial variability. In spatial studies of sediment constituents, it is essential to express contents of these constituents in volumetric mass fractions, since spatial sediment patterns are often obscured by spatial variations in bulk density. Taking spatial variability into account may highly affect the quantification of S-budgets of pools or lakes.
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页码:1003 / 1012
页数:10
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