Data sets reveal long-term trends as follows:
- A significant decline in soil solution SO4 and S uptake which is consistent with the reduction in S deposition as a result of emissions control policies.
- A significant decline in soil solution K+ in the majority of the Level II plots, possibly due to enhanced K leaching and/or uptake in response to management intervention.
- Variable NO3 in soil solution, with a distinct increase in NO3 observed in peat soils under Sitka spruce.
- The first signs of recovery from soil acidification at previously polluted sites.
- Soil acidification at a site with high N deposition from local sources.
What’s of interest
Ten Years of Intensive Environmental Monitoring in British Forests (PDF-1295K)
Foresty Commission Information Note 88