ISSN:
1435-0661
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
,
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Pinus taeda L.) forest growth, soil pH, (pH in 0.01 M CaCl2) decreased by 1 unit in the upper 0- to 15-cm of soils and by 0.4 and 0.3 units in the 15- 35- and 35- to 60-cm layers, respectively. Throughout the 0- to 60-cm horizon, base cation depletion averaged 1.57 kmolc ha-1 yr-1 and effective and total acidity increased by 1.26 and 3.28 kmolc ha-1 yr-1, respectively. A forest H+ budget estimated for these decades indicated that 38% of soil acidification was due to acid deposition, while 62% of soil acidification was attributed to the internal functioning of the ecosystem. Soil samples archived during the three-decade experiment also document decreases in soil-adsorbed SO2 4 -, presumably in response to decreasing atmospheric inputs in recent years.
Type of Medium:
Electronic Resource
