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Acid deposition at Rothamsted, Saxmundham and Woburn, 1969–83
Author(s) -
Goulding K. W. T.,
Poulton P. R.
Publication year - 1985
Publication title -
soil use and management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.709
H-Index - 81
eISSN - 1475-2743
pISSN - 0266-0032
DOI - 10.1111/j.1475-2743.1985.tb00641.x
Subject(s) - deposition (geology) , chemistry , salt (chemistry) , environmental chemistry , zoology , biology , geology , geomorphology , sediment
. Rainfall has become less acid at Rothamsted and Saxmundham over the period 1969–83. The pH of rain at these two sites has increased from 4.4–4.6 to about 4.8–4.9; at Woburn it has remained approximately constant at 4.4–4.6. Amounts of NH 4 ‐N and NO 3 ‐N deposited at present are 10–15 and 5–10 kg ha −1 a −1 respectively. They have been increasing at Rothamsted and Woburn. Some 50–60 kg ha −1 a −1 of Cl and 25–35 kg ha −1 a −1 of SO 4 ‐S are presently deposited. Deposition of non‐sea Cl and SO 4 ‐S has been increasing markedly at all three sites. Non‐sea salts comprise 35% of the total salt deposition near the coast at Saxmundham, 58% inland at Rothamsted and Woburn.