Diagram, see description above for more details

Fig. 5.1.1. Top: pie chart showing the typical physical composition of most soils used in food production; Bottom: Basic cross-section of approximately 20 mm wide of soil as a porous, biologically active mineral-organic matrix. Red arrows show non-living components while purple arrows show biological components. Large macropores resulting from good soil <em>structure</em> allow adequate drainage and air entry to a soil for biological activity, while smaller mesopores and micropores hold water at varying degree of availability for plant roots. Macrofauna such as earthworms (&gt;2mm approximate dimension) are also very important but would occupy too much of the diagram to show.
Originally uploaded in Integrate:Teaching for Sustainability:InTeGrate Modules:Future of Food:Student Materials.

Image 174162 is a 366 by 636 pixel PNG
Uploaded: Jan3 18

Last Modified: 2018-01-03 11:28:09
Permanent URL: https://serc.carleton.edu/download/images/174162/diagram_see_description_above.png

The file is referred to in 1 page
Credit: Steven Vanek, adapted from Steven Fonte.
No information about limits on reusing this item have been recorded. You will need to contact the original creator for permission in cases that exceed fair use (see http://fairuse.stanford.edu/).