Dynamique d'incorporation du carbone et des éléments nutritifs dans un taillis simple de châtaignier (Castanea sativa Miller)

Ranger, Jacques; Félix, C; Bouchon, J.P.; Nys, C.; Ravart, Michel; Bonnaud, Pascal; Bouchard, D.; Bréchet, Claude; Canta, R.; Garnier, P; Gelhaye, Louisette; Delhaye, D.

doi:10.1051/forest:19900502

Cited by 12 publications

(5 citation statements)

References 4 publications

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“…A special method was adopted to evaluate the biomass and mineral content of forest stands accurately (Ranger, 1978;Bouchon et al, 1985;1990a). It can be summarized as follows:…”

Section: Biomass and Nutrient Content Of The Standsmentioning

confidence: 99%

Biomass and nutrient content of extensively and intensively managed coppice stands

Ranger¹

1996

Forestry

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Studies on biomass production and nutrient accumulation in forest stands started 10 years ago in the authors' research group. Several reports presented results from individual stands. The aim of the present paper is to sum up the results obtained from 19 coppice stands, both extensively and intensively managed. Statistically significant relationships between biomass production and nutrient content of coppices were found, from which tables were developed for converting biomass production data of a coppice stand into nutrient contents. These tables will be useful to forest managers for determining the nutrient losses associated with harvesting according to its intensity, i.e. stem harvesting versus whole tree harvesting, and more generally according to the silvicultural scenarios. Significant relationships between soil characteristics and biomass production or nutrient content of the stands were also observed. These were used to calculate simple statistical models for predicting how production and nutrient immobilization vary with soil fertility parameters. This was done separately for extensively and intensively managed stands. The results presented here are sufficiently simple and accurate to be incorporated as they are into forest management models. It is nevertheless necessary to continue data collection to establish truly predictive models. This is particularly true for intensively managed stands for which the present information is incomplete.

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“…A special method was adopted to evaluate the biomass and mineral content of forest stands accurately (Ranger, 1978;Bouchon et al, 1985;1990a). It can be summarized as follows:…”

Section: Biomass and Nutrient Content Of The Standsmentioning

confidence: 99%

Biomass and nutrient content of extensively and intensively managed coppice stands

Ranger¹

1996

Forestry

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“…In fact, it is claimed that the binding capacity of calcium cations can strengthen the middle lamellas, as described by the "egg-box model" developed by Grant et al [37]. Several studies have been performed to clarify the relationship between calcium contents in the soil and in trees, with a special regard to ring shake incidence [33,34,49,50,59,63,66,67]. The results obtained indicate a link between very low calcium contents and ring shake incidence, yet without providing the evidence for a direct relationship between them.…”

Section: Soil Effect?mentioning

confidence: 99%

Ring shake in chestnut (Castanea sativa Mill.): State of the art

Fonti

Macchioni²,

Thibaut

2002

Ann. For. Sci.

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-Too often chestnut wood (Castanea sativa Mill.) becomes economically uninteresting because of the high risk of ring shake to which this species is prone. For more than twenty years chestnut ring shake has been the subject of studies undertaken in an effort to understand its underlying causes and mechanisms. Since not all aspects of the phenomenon have been sufficiently studied at the present time, ring shake has not yet been completely elucidated. However, it is possible to outline a general framework of the phenomenon and advance preliminary ideas on the causes that contribute to the development of this type of fracture. This article summarises the current state of knowledge, discusses the possible causes and proposes measures to reduce the risk of ring shake occurrence in chestnut.ring shake / Castanea sativa Mill. / wood / residual stresses / mechanical strength Résumé -La roulure du châtaignier (Castanea sativa Mill.): connaissances actuelles. Trop souvent le bois de châtaignier (Castanea sativa Mill.) perd son intérêt économique à cause du haut risque de roulure qui affecte cette espèce. Depuis plus de vingt ans la roulure du châtaignier fait l'objet de plusieurs études vouées à la compréhension des causes et des mécanismes qui conduisent à sa formation. À l'état actuel tous les aspects n'ont pas été suffisamment étudiés pour que l'on puisse considérer la roulure comme un phénomène complè-tement élucidé. Malgré cela, un cadre général du phénomène peut être esquissé et des premières réflexions sur les causes qui mènent à l'apparition de ce type de fracture peuvent être avancées. Cet article résume l'état des connaissances acquises à ce jour, discute les causes possibles et propose des mesures afin de diminuer le risque d'apparition de la roulure chez le châtaignier. roulure / Castanea sativa Mill. / bois / contraintes résiduelles / résistance mécanique Ann. For. Sci. 59 (2002) 129-140 129

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“…Restitution au sol de matière organique par l'intermédiaire de la litière Au cours de 3 années consécutives on a déterminé, pour chacun des quatre sites, les retombées de litière suivantes en kg ha -1 an -1 (tableau VIII).On retrouve encore la nette différence entre les deux taillis âgés et les deux taillis coupés récemment Ranger et al (1990b). aboutissent aux mêmes résultats avec des retombées de litière de l'ordre de 2,5 Mg ha -1 an -1 , 2 ans après la coupe à blanc et 5,0 Mg ha -1 an -1 pour des peuplements âgés de 10 à 20 ans.Les feuilles représentent 51 % de la litière dans les stations de Fossa la Nave, Balillaet Monte Crisimo et 72 % à Piano Porcheria.…”

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Biomasse, productivité et transferts de matière organique dans une séquence altitudinale de peuplements de Castanea sativa Mill de l'Etna

Leonardi

Rapp²,

Failla

et al. 1996

Ann. For. Sci.

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Summary -Biomass, productivity and organic matter fluxes in Castanea sativa Mill stands of various elevation in the Etna volcano. All the compartments and fluxes of organic matter distribution and turnover within four Castanea sativa Mill coppice stands of various ages and at various elevations were studied on the flanks of the Etna volcano (Sicily). Aboveground biomass was to 22 and 24 Mg ha -1 in 7-year-old stands and 83 and 100 Mg ha -1 in 12-and 22-year-old coppices, with good correlations between biomass and climatic conditions or stand age. Wood accounted for 95% of the biomass and leaves for 5%. Aboveground perennial biomass production amounted to 2.4 to 5.4 Mg ha -1 year -1 , and thus was also correlated with the age and the altitudinal location of the stands. Litterfall, measured during 3 successive years, varied between 1.7 and 5.1 Mg ha -1 year -1 and was directely related to the stand age. The litter accumulation on the soil surface was 7.4 to 7.9 Mg ha -1 , with only small differences between the four sites. Decomposition required more then 6 years. The comparison of the four coppices showed that all the processes concerning productivity, as well as decomposition, were related to climatic conditions and to the age of the coppice stands.

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Dynamique d'incorporation du carbone et des éléments nutritifs dans un taillis simple de châtaignier (Castanea sativa Miller)

Cited by 12 publications

References 4 publications

Biomass and nutrient content of extensively and intensively managed coppice stands

Biomass and nutrient content of extensively and intensively managed coppice stands

Ring shake in chestnut (Castanea sativa Mill.): State of the art

Biomasse, productivité et transferts de matière organique dans une séquence altitudinale de peuplements de Castanea sativa Mill de l'Etna

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