Fertilizer nitrogen budget in a Scots pine ecosystem attained by using root-isolated plots and15N tracer technique

Melin, J.; Nômmik, Hans; Lohm, Ulrik; Flower-Ellis, J. G. K.

doi:10.1007/bf02143615

Cited by 65 publications

(48 citation statements)

References 5 publications

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“…Plant uptake was still an important N retention mechanism, however, in an old-growth, uneven-aged forest in Washington state (Edmonds et al 1995). In some forests, N retention in understory vegetation can be significant relative to the overstory (Melin et al 1983, Mugasha and Pluth 1994, Preston and Mead 1994, Buchmann et al 1996.…”

Section: Retention In Plant Biomassmentioning

confidence: 99%

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Nitrogen Excess in North American Ecosystems: Predisposing Factors, Ecosystem Responses, and Management Strategies

Fenn¹,

Poth²,

Aber³

et al. 1998

Ecological Applications

328

492

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Abstract. Most forests in North America remain nitrogen limited, although recent studies have identified forested areas that exhibit symptoms of N excess, analogous to overfertilization of arable land. Nitrogen excess in watersheds is detrimental because of disruptions in plant/soil nutrient relations, increased soil acidification and aluminum mobility, increased emissions of nitrogenous greenhouse gases from soil, reduced methane consumption in soil, decreased water quality, toxic effects on freshwater biota, and eutrophication of coastal marine waters. Elevated nitrate ( ) loss to groundwater Ϫ

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Section: Retention In Plant Biomassmentioning

confidence: 99%

“…Forest fertilization studies have shown that litter and soils are major N sinks (Heilman and Gessel 1963, Mead and Pritchett 1975, Miller et al 1976, Melin et al 1983, Raison et al 1990. Soil organic matter is the largest reservoir of N in forest ecosystems, usually exceeding 85% of total ecosystem capital (Cole and Rapp 1981).…”

Section: Retention In Soilmentioning

confidence: 99%

Nitrogen Excess in North American Ecosystems: Predisposing Factors, Ecosystem Responses, and Management Strategies

Fenn¹,

Poth²,

Aber³

et al. 1998

Ecological Applications

328

492

View full text Add to dashboard Cite

show abstract

“…Even though a large fraction of the N applied in fertilisation is integrated into tree biomass about two thirds remain in the soil (Melin et al 1983). One of the environmental impacts of forest fertilisation that has been debated vividly is the risk for nutrient leakage to ground water and aquatic ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Effects of clear-cutting and slash removal on soil water chemistry and forest-floor vegetation in a nutrient optimised Norway spruce stand

Hedwall¹,

Grip²,

Linder³

et al. 2013

Silva Fenn.

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Fertilisation with nutrient optimisation has in Sweden resulted in large increases in volume growth in young stands of Norway spruce. There are, however, environmental concerns about repeated fertilisation and one is the risk of nutrient leakage to ground water resources and aquatic ecosystems after clear-cutting of such forests. The present study followed soil-water chemistry in optimised fertilised stands after clear-cutting, as well as effects of harvest of slash on nutrient leakage. Parts of a 30-year-old stand of Norway spruce, which had been subject to a nutrient optimisation experiment for 17 years, were clear-cut. A split-plot design with whole-tree harvesting as the subplot treatment was applied. Lysimeters were installed and soil-water sampled at nine occasions during the following four years. No significant effects of fertilisation on nitrate leaching were found, while harvest of slash affected the concentration of Ca, DOC, DON, K, Mg, ammonium and nitrate, as well as pH in the soil solution. While no effects of fertilisation could be seen on the soil water concentration of N, the results indicate an interaction between fertilisation and harvest of slash on the concentration of nitrate in the soil solution. The results indicate that forest-floor vegetation plays an important role in the retention of N after clear-cutting of fertilised forests.

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“…The role of the coarse roots alone in retaining N input have not been reported so far. However, Melin et al (1983) and Buchmann et al (1996) found that less than 7% of 15 N were recovered in roots (≤ 30 mm) of an old Scots pine and less than 4% in roots (< 10 mm) of a young Norway spruce forest, respectively. Schleppi et al (1999) reported that 13% of 15 N was found together in roots and litter of an old Norway spruce forest.…”

Section: N Recoveriesmentioning

confidence: 97%

“…Trees and ground vegetations accounted for 3% to 44% of N input, while only up to 10% of N input was leach out. In forests with higher N input, soils retained 26% to 63% of N input (Melin et al 1983, Koopmans et al 1996, Tietema et al 1998, Nadelhoffer et al 1999a, b, Schleppi et al 1999). 8% to 45% of N input was recovered in trees and vegetations, whereas leaching loss increased up to 50%.…”

Section: Distribution Of N Input Among Forest Ecosystemsmentioning

confidence: 99%

Partitioning of atmospheric nitrogen under long-term reduced atmospheric deposition conditions in a Norway spruce forest ecosystem

Zhang¹

2010

Göttinger Forstwissenschaften

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Fertilizer nitrogen budget in a Scots pine ecosystem attained by using root-isolated plots and15N tracer technique

Cited by 65 publications

References 5 publications

Nitrogen Excess in North American Ecosystems: Predisposing Factors, Ecosystem Responses, and Management Strategies

Nitrogen Excess in North American Ecosystems: Predisposing Factors, Ecosystem Responses, and Management Strategies

Effects of clear-cutting and slash removal on soil water chemistry and forest-floor vegetation in a nutrient optimised Norway spruce stand

Partitioning of atmospheric nitrogen under long-term reduced atmospheric deposition conditions in a Norway spruce forest ecosystem

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