- Minocha, Rakesh
U.S. Forest Service
Acidic deposition has caused a depletion of calcium in Northern Forest soils. Calcium plays a vital role in the growth and productivity of forest trees. Several studies have demonstrated that calcium and other essential cations (ions with a positive charge) are available in less-than-adequate quantities in various forest ecosystems in the United States, including the Hubbard Brook Experimental Forest, a Long Term Ecological Research site in New Hampshire.