The Effect of Industrialised Logging on Forest Water Yields
Logging affects water yields
'Immediately following logging, water yield is high because there
are few live trees (they have been cut down) and water enters
creeks and rivers easily.
As the time since logging increases beyond about eight years, there is a
sharp decrease in water yield as the rapidly regrowing forest
uses lots of water and decreases water yield. After approximately
40 years, self - thinning (competition between trees that results
in some trees dying) begins to occur which lowers stem density and
increases water yield. But recovery of water yields to pre-logging levels takes centuries.
Logging leaves a legacy that our grandchildren will still encounter.'