期刊
BIOLOGY AND FERTILITY OF SOILS
卷 38, 期 5, 页码 327-332出版社
SPRINGER
DOI: 10.1007/s00374-003-0660-z
关键词
soil enzymes; air-dried soils; soil quality indicators; canonical discriminant analysis
类别
The influence of air-drying on dehydrogenase, invertase, P-glucosidase, urease, phosphatase, arylsulphatase and phenoloxidase activities was measured in three soils affected by anthropogenic activities and in control soils sampled from neighbouring areas. The air-drying changed enzyme activity, but the behaviour was neither site-specific nor enzyme-sensitive. Canonical discriminant analysis of enzymatic activities of both moist fresh and air-dried samples was able to discriminate between altered and unaltered soils irrespective of the site. Numerical alteration indices were developed as a linear function of the seven enzyme activities and the one obtained from fresh sample data was more successful. Air-drying, apparently alters in unpredictable ways enzyme activities of soils, which could lead to misinterpretation of results.
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