Etude des relations entre une racine et les rejets de la souche chez Castanea sativa Mill

Aymard, Maurice; Fredon, J.-J.

doi:10.1051/forest:19860305

Cited by 15 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This has also been found by Miglioretti (1983Miglioretti ( , 1987 at the Rians site. This phenomenon may be exacerbated by the existence of preferential links between roots and shoots, leading to an unequal root nutrient stock allocation between shoots, as has been shown for other species by Destremeau & Roderbourg (1968-1969, Riedacker (1973), Bedeneau & Pages (1984), Aymard &Fredon (1986), andCarlier (1987). ), counting rings of shoots in our site, found some differences in age between shoots even on the same stool.…”

Section: Discussion and Concluding Remarkssupporting

confidence: 69%

Factors affecting radial growth of Quercus ilex L. in a coppice stand in southern France

et al. 1992

View full text Add to dashboard Cite

Quercus ilex woodlands in the south of France are characterized by low productivity. Several hypotheses have been put forward to provide an explanation for this phenomenon: (i) senescence of coppice stumps; (ii)limited availability of water and nutrient resources; (iii)intershoot and inter-plant competition. To test some of these hypotheses, growth response to rainfall distribution and nutrient supply (NPK), and the influence of edge effects after clear-cutting were studied in a 40-yr old stand.Curves of radial increment were compared with precipitation and umbrothermic patterns for the 6 years studied. Water availability apparently accounted for some inter-annual differences in growth. However, it was not mean annual rainfall, but rather rainfall occurring in late spring-summer (June, July) which played a large role in determining radial growth. Radial growth was also increased by nutrient supply. Its positive effect was strengthened by favourable rainfall in 1987. Edge-effects following a clear-cut were also found, both in the first year and in four succeeding years following the cut. This comprised in greater radial growth rate for all shoots, with reduced repression of smaller shoots by the larger ones. The effect decreased over a distance of 10 m with increasing distance from the cut field. This could be explained by increased availabiDLy of water, nutrient resources, and light.

show abstract

Section: Discussion and Concluding Remarkssupporting

confidence: 69%

Factors affecting radial growth of Quercus ilex L. in a coppice stand in southern France

et al. 1992

View full text Add to dashboard Cite

show abstract

“…Destremeau and Roderbourg studied older shoots (10 years old) and it is possible that, as here, each shoot had acquired a certain degree of independence (Aymard & Fredon 1986). In eucalyptus, Riedacker (1973) showed that shoots located in the sector corresponding to a root supplied with 32p received 90'!o of all radioactive sap.…”

Section: Discussionmentioning

confidence: 76%

“…In birch, some zones receive a high flow, while others receive nothing at all (Bedeneau & Pages 1984). This division of the stump into more or less independent sectors can also be found in the chestnut (Carlier 1987;Aymard & Fredon 1986). Destremeau and Roderbourg (1968-69) have estimated that shoots in the cork oak lead an independent life, the stump only providing mechanical support.…”

Section: Discussionmentioning

confidence: 77%

Effect of cleaning and thinning on height growth and girth increment in holm oak coppices (Quercus ilex L.)

Ducrey

Toth

1992

Vegetatio

View full text Add to dashboard Cite

This article studies the influence of cleaning or thinning intensity and of coppice age at the time of silvicultural treatment, on the growth of shoots remaining on the stool, in Quercus ilex coppices.Two experimental designs were used to answer these questions. The first studied the effect of two cleaning intensities on 4, 8, 15, 20, and 25 year old coppices. The second studied the effect of 4 thin-ning intensities (26 o, 42.0, 58%, or 78 °,/o removal of the initial basal area) on 43 and 57 year old coppices. In both cases, control plots undergoing no silvicultural treatment were maintained for each age class. The results, 4 and 5 years after silvicultural treatment, concerned girth increment and height growth of coppice shoots.Cleaning or thinning consistently had a positive influence on girth increment. In young coppices, less than 25 years old, mean annual girth increment was approximately 6 mm in the controls and double that under heavy cleaning. In older coppices, girth increment was lower in controls (3 mm per year) but the effect of thinning was very positive and, under very heavy thinning, growth was more than 11 mm per year.Cleaning and thinning often modify height growth. This effect was found to be either positive or negative and no general trend could be defined which was valid for all the age classes.Silvicultural treatments also had a positive effect on the appearance and growth of epicormic shoots on the holm oak trunks.The results were also analysed at the stool level. The number or percentage of shoots removed had a positive effect on the individual growth of selected shoots.

show abstract

“…Some pioneering studies have investigated the organization of whole root systems in multi-stem stools. Aymard and Freydon (1986) used phytocid applied to the roots of different chestnut stools (coppiced) in order to investigate the connection between roots and shoots. The results showed that each subunit of clumps and shoots had an independent root system.…”

Section: Root Distribution and Root System Architecture In Coppice Symentioning

confidence: 99%

Root reinforcement dynamics of European coppice woodlands and their effect on shallow landslides: A review

Vergani

Giadrossich

Buckley³

et al. 2017

Earth-Science Reviews

105

View full text Add to dashboard Cite

In European mountain regions, forests play an important role in the mitigation of risk due to natural hazards such as landslides, rockfalls, floods and avalanches.\ud \ud Conifer species usually provide a protective effect at higher altitude, while at lower altitudes broadleaf species are dominant. These forests are or were often managed as coppice systems.\ud \ud The high stem density of coppice stands, their rapid growth and the permanence of root systems in the soil can be considered as assets in terms of protective function. However, these considerations are poorly researched and there is generally a lack of studies investigating the suitability of coppice as protection forests. The issue is relevant, considering that many coppice stands in mountain regions have become uneconomic and are now abandoned and overaged. Whether and how to manage these forests stands is a key question for practitioners.\ud \ud In this contribution we analyze the implications of coppice management for slope stability and in particular to mitigate shallow landslides, focusing on root reinforcement, the main mechanism by which vegetation can reinforce slopes.\ud \ud We review available studies concerning root distribution and dynamics in coppice stands to formulate hypotheses about their contribution in terms of root reinforcement. Finally we highlight the lacks of knowledge and the further steps needed to properly evaluate the effectiveness of the coppices in protecting against shallow landslides

show abstract

Etude des relations entre une racine et les rejets de la souche chez Castanea sativa Mill

Cited by 15 publications

References 0 publications

Factors affecting radial growth of Quercus ilex L. in a coppice stand in southern France

Factors affecting radial growth of Quercus ilex L. in a coppice stand in southern France

Effect of cleaning and thinning on height growth and girth increment in holm oak coppices (Quercus ilex L.)

Root reinforcement dynamics of European coppice woodlands and their effect on shallow landslides: A review

Contact Info

Product

Resources

About