Nutrient losses after clear‐cut logging and slash burning in the Oregon Coast Range

Brown, George W.; Gahler, Arnold R.; Marston, Richard B.

doi:10.1029/wr009i005p01450

Cited by 78 publications

(50 citation statements)

References 2 publications

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“…Nitrogen fixation inputs can sometimes far exceed atmospheric inputs Cole 1984, Bormann et al 1993b) and contribute to leaching of and cations in gravelly Ϫ NO 3 soils (Binkley et al 1982, Van Miegroet andCole 1984). Coastal alder stands with fine soils lose little , even after burning (Brown et al 1973), and can Ϫ NO 3 accumulate Ͼ20 Mg N/ha (Franklin et al 1968). In summary, these anomalous cases demonstrate that the effects of chronic N inputs on ecosystem N retention or loss is sometimes unpredictable because of our limited understanding of ecosystem processing of chronic N inputs.…”

Section: Anomalous Cases Of Ecosystem Responsesmentioning

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

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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: Anomalous Cases Of Ecosystem Responsesmentioning

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

“…Situations with noticeable losses [2,4,6,7,12,13,20,27,28,44,54] or more limited losses of nutrients [16,43,57,58] have been reported. The case of the large losses observed the after clear-cutting of the Hubbard Brook experimental forest represents a very specific situation whose results cannot be directly generalized.…”

Section: Introductionmentioning

confidence: 99%

Effects of the clear-cutting of a Douglas-fir plantation (Pseudotsuga menziesii F.) on the chemical composition of soil solutions and on the leaching of DOC and ions in drainage waters

et al. 2007

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-The effects of the clear-cutting of a 70-year-old Douglas-fir plantation on the chemical composition of soil solutions and on leaching of nutrients in drainage waters were observed by a continuous monitoring, six years before and three years after the cutting. Forest harvesting was made with very limited soil disturbances. Results showed that the concentration of weakly fixed solutions did not change but that the concentration of gravitational solutions of the upper soil layers drastically fell down after the cutting. The limited increase in nutrients leached with drainage waters was only due to the increase in the water flux, which is difficult to quantify because of the presence of ground vegetation. The monitoring of numerous fluxes before and after the clear-cutting could explain the specific behaviour of the soil solutions. The limited losses of nutrients the after clear-cutting in a potentially responsive ecosystem were unexpected. The initial hypothesis was that the decrease in the mineralization and nitrification rates observed after the cutting was related to a stimulating effect of Douglas-fir on the activity of soil nitrifyers.Douglas-fir / clear-cutting / soil solutions / nutrients / leaching Résumé -Effet de la coupe à blanc d'un peuplement de Douglas (Pseudotsuga menziesii F.) sur la composition chimique des solutions du sol et sur le flux d'éléments drainés. Les effets de la coupe à blanc d'une plantation de Douglas de 70 ans ont été observés sur la composition chimique des solutions du sol et les pertes d'éléments par drainage, par un suivi mensuel pendant 6 ans avant, et 3 ans après la coupe. L'exploitation du peuplement a été réalisée avec une perturbation minimum du sol. Les résultats montrent que les solutions liées ont peu évolué après la coupe, alors que le changement des solutions libres a été drastique dans les horizons de surface du sol. Malgré des incertitudes sur le rôle de la végétation spontanée, le drainage d'éléments n'a pas fortement augmenté après la coupe. La prise en compte de l'ensemble des flux mesurés dans cette étude semble pouvoir expliquer les observations. Les pertes limitées après la coupe d'une plantation où l'activité nitrifiante était élevée avant la coupe étaient inattendues. L'hypothèse avancée est l'arrêt du contrôle stimulateur des populations nitrifiantes du sol après la coupe du Douglas. Douglas / coupe-à-blanc / solutions du sol / éléments nutritifs / lixiviation

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“…The increase generally reached a maximum two to seven years after the harvest, and was followed by a decrease [11,47,57,85,93]. In contrast, McColl [51] measured a decrease in nitrogen leaching after a clear-cut, when litter and residues were discarded, whereas an immobilisation of the nutrients in the residues following the harvest was also described [12,17,26].…”

Section: Leaching Root Decomposition and Microbial Biomassmentioning

confidence: 99%

Effects of a clear-cut on the in situ nitrogen mineralisation and the nitrogen cycle in a 67-year-old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) plantation

et al. 2004

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-In situ net nitrogen mineralisation, deposition, uptake and leaching fluxes were determined in a 67-year-old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) plantation in the Beaujolais mountains. Measurements were performed during five years before the clear-cut of the stand and two years after the clear-cut. Deposition and mineralisation of N decreased after the harvest. The drastic decrease in tree N uptake was counteracted by the developing understorey vegetation. Microbial immobilisation, favoured by the input of organic matter and the increase in temperature, was probably the cause of a decrease in the net mineralisation of N. Leaching of mineral N at 15 cm depth decreased after the harvest. However, fluxes of Mg and Ca leached at 60 cm depth did not vary after the harvest.nitrogen cycle / clear-cut / Pseudotsuga menziesii / leaching / soil Résumé -Effet de la coupe à blanc d'une plantation de Douglas (Pseudotsuga menziesii (Mirb.) Franco) de 67 ans, sur la production in situ d'azote minéral et sur le cycle de l'azote. La minéralisation nette, les dépôts, l'absorption et le drainage d'azote ont été mesurés in situ dans une plantation de Douglas (Pseudotsuga menziesii (Mirb.) Franco) de 67 ans, située sur sol acide dans les monts du Beaujolais. Les mesures ont été effectuées pendant cinq ans avant la coupe à blanc du peuplement, puis pendant 2 ans après la coupe. Les dépôts d'azote atmosphérique et la minéralisation de l'azote diminuent après la récolte. La diminution du prélèvement d'azote par les racines est limitée par le développement de la végétation herbacée. L'immobilisation microbienne de l'azote, favorisée par les apports de matière organique et l'augmentation de la température, est supposée être la cause de cette diminution de la minéralisation nette. En conséquence, le drainage d'azote minéral à 15 cm de profondeur est réduit après la coupe. Toutefois, les flux de Mg et Ca dans les solutions gravitaires à 60 cm de profondeur ne sont pas modifiés après la coupe. cycle de l'azote / coupe à blanc / Pseudotsuga menziesii / drainage / sol

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Nutrient losses after clear‐cut logging and slash burning in the Oregon Coast Range

Cited by 78 publications

References 2 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 the clear-cutting of a Douglas-fir plantation (Pseudotsuga menziesii F.) on the chemical composition of soil solutions and on the leaching of DOC and ions in drainage waters

Effects of a clear-cut on the in situ nitrogen mineralisation and the nitrogen cycle in a 67-year-old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) plantation

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