Back to Search
Start Over
24-h variation in soil respiration after a long dry season in a Sudano-Sahelian region
- Source :
- Scientia Agricola, Vol 72, Iss 5, Pp 452-458 (2015)
- Publication Year :
- 2015
- Publisher :
- Universidade de São Paulo, 2015.
-
Abstract
- Soil respiration is a major component of the global carbon cycle which links ecosystems and the atmosphere. To evaluate the reaction of soil respiration after wetting, during a dry period, soil respiration and associated environmental factors were measured over a 24-h period, during the dry season in North Cameroon after wetting the soil. Over 24-h, soil respiration rates followed a quadratic curve during the day coming close to linear at night, while soil temperature and moisture together explained at least 73 % of the variations during the 24-h observed. These soil respiration rates increased during the morning, peaked between 11h00 and 13h00 and then decreased gradually to the minimum around 06h00. These observations were used to propose a method for estimating mean daytime and nighttime soil respiration after wetting the soil. The method proposed in this study has the advantage of being based on a small number of measurements and is, therefore, easier to implement for monitoring 24-h soil respiration after the first rains following a long dry period.
- Subjects :
- diel soil respiration
soil temperature
soil moisture
Agriculture (General)
S1-972
Subjects
Details
- Language :
- English, Spanish; Castilian, Portuguese
- ISSN :
- 1678992X and 01039016
- Volume :
- 72
- Issue :
- 5
- Database :
- Directory of Open Access Journals
- Journal :
- Scientia Agricola
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.fcc5d1aaac5f43aab9ad7cd5b69a671e
- Document Type :
- article
- Full Text :
- https://doi.org/10.1590/0103-9016-2014-0412