UC Davis Department of Plant Sciences

RIPARIAN ECOSYSTEM RESPONSE TO TIMBER HARVSESTING FOR THE PURPOSE OF RESTORING ASPEN


Soil Bulk Density

Soil Bulk Density

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Soil bulk density is the soil quality parameter most likely to respond immediately to conifer removal treatments. Soil bulk density is a surrogate measurement of soil compaction, a common impact of silvicultural practices such as skidding fallen logs to load landings. As a soil is compacted bulk density will increase.

There was no significant change in the difference (Δ) between treatment and reference soil bulk density at the 0-6 inches or the 6-12 inches depth Pine-Bogard Project Phase 2, Phase 3, and Bailey Project treatment implementations (Fig. 10). This indicates that there was no soil compaction at either the Pine-Bogard or Bailey Creek soil bulk density monitoring stations, which were located in harvest unit areas outside of defined skid trails and log landings.

   

 

Figure 10. Mean and standard error of soil bulk density for treatment and reference aspen stands before and after Pine-Bogard Phase 2, Pine-Bogard Phase 3, and Bailey Project conifer removal.  

 

       

© 2011-2012 UC Davis | California Rangeland Watershed Laboratory | One Shields Ave | Davis, CA 95616 | Last update: September 26, 2013