Geophysics

   

Co2 Flush Rates After Soil Crumbling as Related to Soil Carbon Pools and Soil Fragmentation Characteristics

Authors: Magnus Carlsson, Olof Andrén, Vera Kainiemi, Thomas Kätterer

Sensible use of tillage requires knowledge about different aspects of soil crumbling. Decisions of best management practices must be based on complex considerations regarding e.g. effective tractor use, long-term soil health, etc. Research on soil carbon fluxes in tilled soils is an area of investigation which has received much attention recently, but ideally it should be approached in a combined bio-physical manner. We conducted studies on respiration from freshly fragmented clay soil in different aggregate size fractions with help of a multi-channel respirometer. The fragmented soil was characterized in terms of different soil carbon pools. The physical fragmentation itself was characterized in a manner that should be relevant to the three existing ways of relating use of a specific tool configuration to physical outcome of the operation, namely soil mechanical tillage experiments in situ, tests in soil bins and computational soil mechanics. Linear regressions showed that higher specific aggregate surface area, more free organic C per dry soil and more occluded C per dry soil led to higher soil respiration rates.

Comments: 9 Pages.

Download: PDF

Submission history

[v1] 2018-10-27 08:24:57

Unique-IP document downloads: 9 times

Vixra.org is a pre-print repository rather than a journal. Articles hosted may not yet have been verified by peer-review and should be treated as preliminary. In particular, anything that appears to include financial or legal advice or proposed medical treatments should be treated with due caution. Vixra.org will not be responsible for any consequences of actions that result from any form of use of any documents on this website.

Add your own feedback and questions here:
You are equally welcome to be positive or negative about any paper but please be polite. If you are being critical you must mention at least one specific error, otherwise your comment will be deleted as unhelpful.

comments powered by Disqus