Enzymatic activity in a semi-gley soil under the floodplain forest in South Moravia.

In three profiles of a semi-gley soil under the floodplain forest, variations were studied in the activities of invertase, amylase, cellobiase, cellulase, proteases, and phosphatases. In the surface soil layer, enzymatic activity was found affected by the soil moisture at a significant level, whereas in the deeper soil layers the influence of aeration was more effective. Moreover, significant correlations could be detected between the amount of available nitrogen and protease activity, while the water-soluble phosphorus acted as a represeive agent on the activity of phosphatases. Existence of correlations between the numbers of microbes and enzymes could be demonstrated for invertase and protases only.