Effects of forest age on surface drainage water and soil solution aluminium chemistry in stagnopodzols in Wales |
| |
| Authors: | S. Hughes D. A. Norris P. A. Stevens B. Reynolds T. G. Williams C. Woods |
| |
| Affiliation: | 1. Institute of Terrestrial Ecology, Bangor Research Unit, University College of North Wales, Deiniol Road, LL57 2UP, Bangor, Gwynedd, UK
2. Institute of Terrestrial Ecology, Merlewood Research Station, Grange-over-Sands, LA11 6JU, Cumbria, UK
|
| |
| Abstract: | The influence of forest development on soil solution and surface drainage water aluminium chemistry was investigated in Sitka spruce (Picea sitchensis) plantations in Wales. Comparisons with semi-natural grassland and moorland sites are described. A highly significant positive relationship was shown between increasing forest age and soilwater aluminium concentrations in the B horizons. Shortterm/episodic peaks in Al concentrations were strongly related to incidences of high concentrations of neutral, marine-derived, salts in the soilwater. Nitrification may be an important factor in soil acidification and the mobilization of Al in soilwaters beneath the older mature-forest plantations in Wales. Labile monomeric Al concentrations were largest in surface waters draining the oldest forestry plantations compared with younger forest catchments and moorland, although response to discharge of soilwater acidity to the surface waters at individual sites was dependent on the acid neutralizing capacity of the groundwater component of the surface waters. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
