If trees are cut and removed from the site (ie logged or pulped), the calcium they extracted from the soil is lost.
Repeat the process a few times.
Calcium levels fall.
Soil becomes acidic.
Very little will grow except moss.
This is why plantations and repeated harvesting of forests is bad, and why recycling is necessary.
Slashdot Mirror
If trees are cut and removed from the site (ie logged or pulped), the calcium they extracted from the soil is lost.
Repeat the process a few times.
Calcium levels fall.
Soil becomes acidic.
Very little will grow except moss.
This is why plantations and repeated harvesting of forests is bad, and why recycling is necessary.