‘Poor rich fen mosses’: atmospheric N-deposition and P-eutrophication in base-rich fens

[摘要] Base-rich fens in the Netherlands are threatened by acidification and replacement of rich-fen bryophytes by Sphagnum spp. Acidification is a natural process when input of base-rich water is reduced, and is probably accelerated by high atmospheric deposition, leading to lower pH at similar calcium levels, and increased acidification capacity of Sphagnum. However, acidification may also be due to eutrophication, especially with P, which leads to a shift in stable states from base-rich to Sphagnum-dominated fen.

[学科分类] 植物学