Jeff Skousen, Jarrett Fowler, Loren Gormley, Ida Holaskova, Adrienne Nottingham, Stephanie Connolly
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引用次数: 0
摘要
用直升机对西弗吉尼亚州Monongahela国家森林（MNF）的酸性森林土壤进行了10 Mg ha−1的治理。通过测量石灰和未石灰土壤的pH值、酸度、铝（Al）和钙（Ca）浓度，在石灰化后1年和5年评估石灰化的效果。Fowler等人报道了第一年的结果。石灰化5年后，未石灰化土壤pH值为4.2，石灰化土壤pH值为5.6。石灰化前Ca浓度平均为6.4 cmolc kg - 1，而石灰化后15年为31 cmolc kg - 1。5年后，石灰土壤的酸性和O层的铝浓度比未石灰土壤低5倍。石灰化这些酸性森林土壤的有益效果持续了5年。
Beneficial effects persist 5 years after liming acid forest soils in West Virginia
Acid forest soils in the Monongahela National Forest (MNF), West Virginia, were limed at 10 Mg ha−1 by helicopter. Effects of liming were evaluated 1 and 5 years after liming by measuring pH, acidity, and aluminum (Al) and calcium (Ca) concentrations in limed and unlimed soils. First-year results were reported by Fowler et al. Unlimed soils had soil pH of 4.2, while limed soils had pH of 5.6 in O horizons 5 years after liming. Ca concentrations averaged 6.4 cmolc kg−1 without liming compared to 31 cmolc kg−1 5 years after liming. Soil acidity and Al concentrations in O horizons were five times lower in limed soils compared to unlimed soils after 5 years. The beneficial effects of liming these acid forest soils have persisted through 5 years.
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