Enzymatic activity inside and outside of water-stable aggregates in soil under different land useстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 25 апреля 2017 г.
Аннотация:A method is presented for assessing the distribution of enzymatic activity inside and outside of
water-stable aggregates. Two samples of water-stable aggregates >1 mm have been isolated from dry aggregates
of 1–2 mm. To determine the enzymatic activity, a substrate has been added to one of the samples without
disaggregation; the other sample has been preliminarily disaggregated. Enzymatic activity within waterstable
aggregates has been assessed from the difference between the obtained results under the supposition
that the penetration of substrate within the water-saturated aggregates is hampered, and enzymatic reactions
occur only at the periphery. The levels and distributions of enzymatic (peroxidase, polyphenol oxidase, and
catalase) activities in water-stable aggregates of soddy-podzolic soils under forest and plowland and typical
chernozems of long-term field experiments have been studied. The peroxidase, polyphenol oxidase, and catalase
activities of water-stable aggregates vary from 6 to 23, from 7 to 30, and from 5 to 7 mmol/(g h), respectively.
The ratio between the enzymatic activities inside and outside of soil aggregates showed a higher dependence
on soil type and land use, as well as on the input of organic matter and the structural state, than the
general activity level in water-stable aggregates.