Long-term decomposition of successive organic strata in a nitrogen saturated Scots pine forest soil

Berg, Matty P.; Kniese, J. P.; Zoomer, R; Verhoef, H.A.

doi:10.1016/s0378-1127(97)00331-9

Cited by 46 publications

(34 citation statements)

References 57 publications

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“…However, no such significant increase of N content was found in nutrient-poor needles. It is proposed that during later stages, lignolytic enzyme efficiency maybe limited by high N content or by high availability of inorganic N (Ågren et al, 2001;Berg, 1986;Berg et al, 1998;Fog, 1988;Hagedorn et al, 2003;Magill and Aber, 1998;Micks et al, 2004). This is also supported by the results found in laboratory experiments (Craine et al, 2007).…”

Section: Discussionmentioning

confidence: 78%

“…It is proposed that adding N to the soil-litter in N-limited ecosystems should increase microbial activity, but would not affect microbial activity in N-saturated ecosystems (Berg, 1986;Berg and Matzner, 1997;Berg et al, 1998). We have previously reported that, due to land-use history, tropical pine plantations in southern China are N limited for litter decomposition (Mo et al, 1995;2006), and that N addition positively affected mass loss of decomposing litter , suggesting that N deposition may enhance C release to the atmosphere by increasing litter decomposition.…”

Section: Introductionmentioning

confidence: 99%

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Decomposition responses of pine (Pinus massoniana) needles with two different nutrient-status to N deposition in a tropical pine plantation in southern China

Fang

Zhu

et al. 2008

Ann. For. Sci.

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-• The effect of nitrogen (N) deposition on the decomposition of pine (Pinus massoniana) needles in a tropical pine plantation was studied. The pine needles with two different nutrient status (nutrient-rich and nutrient-poor) were used, followed by 3-levels of N treatments (Control: no N addition, Low-N: 5 g N m −2 y −1 , and Medium-N: 10 g N m −2 y −1 experimental inputs), which had been applied for 26 months continuously before this experiment and continued throughout the decomposition measurement.• The main objective was to test the hypothesis that decomposition of nutrient-rich needles would be more sensitive to cumulative N deposition than the decomposition of nutrient-poor needles.• Nitrogen addition had negative effect on mass loss, and the release of N and P from decomposing nutrient-rich needles but little or no effect on the decomposition of nutrient-poor needles. In addition, a negative effect in the initial decomposition phase and a positive effect in later decay stages were found on C release. The negative effect was stronger on nutrient-rich needles than on nutrient-poor needles, but the reverse was true for the positive effect.• Our results suggest that response of litter decomposition to N deposition may vary depending on the nutrient status of the litter.anthropogenic impacts / litter decomposition / carbon sequestration / nutrient status / tropics Résumé -Décomposition des aiguilles de pin en relation avec différents apports de dépôts azotés dans une plantation de pins tropicaux (Pinus massoniana) du Sud de la Chine.• Les effets des dépôts azotés (N) sur la décomposition des aiguilles de pin ont été étudiés dans une plantation de pins tropicaux (Pinus massoniana) du Sud de la Chine. Les aiguilles de pin différentes par leur statut nutritionnel (station riche en nutriments et station pauvre en nutriments) ont été utilisées dans une expérimentation comportant 3 niveaux de traitement azoté (témoin sans apport d'azote, apport faible d'azote : 5 g N m −2 an −1 , apport moyen d'azote : 10 g Nm −2 an −1 ) qui ont été appliqués pendant une période de 26 mois avant et pendant cette expérimentation.• L'objectif principal était de tester l'hypothèse que la décomposition des aiguilles riches en nutriments devrait être plus sensible à une déposition cumulée d'azote que la décomposition des aiguilles pauvres en nutriments.• L'apport répété d'azote a eu un effet négatif sur la perte de masse et la libération d'azote et de phosphore des aiguilles de la station riche et un effet faible ou nul sur la décomposition des aiguilles de la station la plus pauvre. En outre, un effet négatif dans la phase initiale de la décomposition et un effet positif dans les phases plus tardives de la décomposition ont été mis en évidence pour la libération de carbone. L'effet négatif a été plus fort pour les aiguilles riches en nutriments que pour les aiguilles pauvres en nutriments, mais l'inverse était vrai pour ce qui concerne l'effet positif.• Nos résultats, complétés par ceux obtenus au cours d'expérimentation antérie...

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Section: Discussionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Decomposition responses of pine (Pinus massoniana) needles with two different nutrient-status to N deposition in a tropical pine plantation in southern China

Fang

Zhu

et al. 2008

Ann. For. Sci.

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“…Soil NO − 3 -N accumulation could also increase litter decomposition rate due to the decline of its C/N ratio with more mineral N incorporated in organic matter (Berg et al, 1998;Hobbie and Gough, 2004). In addition, soil CO 2 fluxes were positively correlated to both NO (Fig.…”

Section: Effects Of Soil Mineral N On Soil Co 2 Fluxmentioning

confidence: 97%

Effects of multiple environmental factors on CO<sub>2</sub> emission and CH<sub>4</sub> uptake from old-growth forest soils

Fang

Cheng

et al. 2010

Biogeosciences

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Abstract. To assess contribution of multiple environmental factors to carbon exchanges between the atmosphere and forest soils, four old-growth forests referred to as boreal coniferous forest, temperate needle-broadleaved mixed forest, subtropical evergreen broadleaved forest and tropical monsoon rain forest were selected along eastern China. In each old-growth forest, soil CO 2 and CH 4 fluxes were measured from 2003 to 2005 applying the static opaque chamber and gas chromatography technique. Soil temperature and moisture at the 10 cm depth were simultaneously measured with the greenhouse gas measurements. Inorganic N (NH + 4 -N and NO − 3 -N) in the 0-10 cm was determined monthly. From north to south, annual mean CO 2 emission ranged from 18.09 ± 0.22 to 35.40 ± 2.24 Mg CO 2 ha −1 yr −1 and annual mean CH 4 uptake ranged from 0.04 ± 0.11 to 5.15 ± 0.96 kg CH 4 ha −1 yr −1 in the four old-growth forests. Soil CO 2 flux in the old-growth forests was mainly driven by soil temperature, followed by soil moisture and NO

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“…Other studies showed either no (Prescott et al, 1999;Vitousek, 1998) or depressing (Å gren et al, 2001 ;Magill and Aber, 1998;Micks et al, 2004) effects of N on litter decomposition rate. A positive response in the initial decomposition phase and a negative response in later stages have also been found (Berg et al, 1998;Berg and Matzner, 1997). Thus, to reach a better understanding of the influence of N on the decomposition process, there is still a need for further investigation (Adams, 2003;Vestgarden, 2001).…”

Section: Introductionmentioning

confidence: 99%

Response of Litter Decomposition to Simulated N Deposition in Disturbed, Rehabilitated and Mature Forests in Subtropical China

et al. 2006

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The response of decomposition of litter for the dominant tree species in disturbed (pine), rehabilitated (pine and broadleaf mixed) and mature (monsoon evergreen broadleaf) forests in subtropical China to simulated N deposition was studied to address the following hypothesis: (1) litter decomposition is faster in mature forest (high soil N availability) than in rehabilitated/disturbed forests (low soil N availability); (2) litter decomposition is stimulated by N addition in rehabilitated and disturbed forests due to their low soil N availability; (3) N addition has little effect on litter decomposition in mature forest due to its high soil N availability. The litterbag method (a total of 2880 litterbags) and N treatments: Control-no N addition, Low-N: )5 g N m )2 y )1 , Medium-N: )10 g N m )2 y )1 , and High-N: )15 g N m )2 y )1 , were employed to evaluate decomposition . Results indicated that mature forest, which has likely been N saturated due to both long-term high N deposition in the region and the age of the ecosystem, had the highest litter decomposition rate, and exhibited no significant positive and even some negative response to nitrogen additions. However, both disturbed and rehabilitated forests, which are still N limited due to previous land use history, exhibited slower litter decomposition rates with significant positive effects from nitrogen additions. These results suggest that litter decomposition and its responses to N addition in subtropical forests of China vary depending on the nitrogen status of the ecosystem.

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Long-term decomposition of successive organic strata in a nitrogen saturated Scots pine forest soil

Cited by 46 publications

References 57 publications

Decomposition responses of pine (Pinus massoniana) needles with two different nutrient-status to N deposition in a tropical pine plantation in southern China

Decomposition responses of pine (Pinus massoniana) needles with two different nutrient-status to N deposition in a tropical pine plantation in southern China

Effects of multiple environmental factors on CO<sub>2</sub> emission and CH<sub>4</sub> uptake from old-growth forest soils

Response of Litter Decomposition to Simulated N Deposition in Disturbed, Rehabilitated and Mature Forests in Subtropical China

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Long-term decomposition of successive organic strata in a nitrogen saturated Scots pine forest soil

Cited by 46 publications

References 57 publications

Decomposition responses of pine (Pinus massoniana) needles with two different nutrient-status to N deposition in a tropical pine plantation in southern China

Decomposition responses of pine (Pinus massoniana) needles with two different nutrient-status to N deposition in a tropical pine plantation in southern China

Effects of multiple environmental factors on CO&lt;sub&gt;2&lt;/sub&gt; emission and CH&lt;sub&gt;4&lt;/sub&gt; uptake from old-growth forest soils

Response of Litter Decomposition to Simulated N Deposition in Disturbed, Rehabilitated and Mature Forests in Subtropical China

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Effects of multiple environmental factors on CO<sub>2</sub> emission and CH<sub>4</sub> uptake from old-growth forest soils