The Atmosphere of the Soil: Its Composition and the Causes of Variation
Open Access
- 27 March 1915
- journal article
- research article
- Published by Cambridge University Press (CUP) in The Journal of Agricultural Science
- Vol. 7 (1) , 1-48
- https://doi.org/10.1017/s0021859600002410
Abstract
1. The free air in the pores of the soil to a depth of 6 inches is very similar in composition to the atmospheric air but it differs in two respects:(a) It contains more CO2 and correspondingly less oxygen, the average in 100 volumes being 0–25 volume CO2 and 20–6 of oxygen against 0–03 volume CO2. and 20–96 oxygen in atmospheric air.(b) It shows greater fluctuations in composition.Usually the sum of the CO2 and oxygen is only slightly less than in atmospheric air but at periods when nitrates rapidly increase there is a perceptible falling off of oxygen, and a still greater one in waterlogged soils.Keywords
This publication has 1 reference indexed in Scilit:
- The Nature and Amount of the Fluctuations in Nitrate Contents of Arable SoilsThe Journal of Agricultural Science, 1914