Esteri Ohenoja , Liisa Pohjola

Metsämaan lämpöolojen mittaaminen ruokosokerin inversioon perustuvalla menetelmällä.

Ohenoja E., Pohjola L. (1981). Metsämaan lämpöolojen mittaaminen ruokosokerin inversioon perustuvalla menetelmällä. Silva Fennica vol. 15 no. 2 article id 5109. https://doi.org/10.14214/sf.a15050

Abstract

The use and problems of the sucrose inversion method for the study of forest humus and soil are discussed. The method is based on the temperature dependence of sucrose inversion, changes in rotation angle being determined with a circle polarimeter. Average temperatures and thermal sums for forest humus in different forests in Finland were measured, using this method, for a period of ca. 100 days. The results are not considered definitive but are regarded rather as examples. Average temperatures were somewhat higher in the humus of dry and poor heath forests than in that of moist and herb-rich forests, with exceptions that could be explicable by topographic position.

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Original keywords
metsämaa; maaperä; lämpötila; mittausmenetelmät; sakkaroosi-inversiomenetelmä

English keywords
forest soil; soil temperature; measurement methods; Sucrose inversion method

Published in 1981

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Available at https://doi.org/10.14214/sf.a15050 | Download PDF