The role of vegetation management for enhancing productivity of the world's forests

Wagner, Robert G.; Little, Keith M.; Richardson, B.; McNabb, Ken

doi:10.1093/forestry/cpi057

Cited by 253 publications

(169 citation statements)

References 37 publications

Supporting

Mentioning

153

Contrasting

Unclassified

Order By: Relevance

“…The results clearly show that seedlings established in fresh patches grew faster than seedlings established in one-or two-year-old patches, and thus confirmed our third hypothesis. This corroborates also with a substantial amount of long-term data showing yield gain when competing vegetation is effectively managed (Wagner et al 2006). The root collar diameter was more clearly affected than seedling height in our study, in accordance with Jylhä and Hytönen (2006).…”

Section: Discussionsupporting

confidence: 91%

Germination and seedling establishment of Norway spruce (Picea abies) after clear-cutting is affected by timing of soil scarification

et al. 2017

View full text Add to dashboard Cite

Natural regeneration of Norway spruce (Picea abies (L.) Karst.) is a relatively common practice in Norway on medium to low site indices. However, seedling establishment is often hampered by rapid regrowth of competing vegetation in scarified patches. The aim of our study was to examine the effect of coordinating scarification towards an expected seed-fall, by studying germination and seedling establishment in scarified patches of different age (fresh, one-and two-year-old). The experiment was conducted in two stands in southeast Norway that were clear-cut in 2007. Scarification was applied to subplots in autumn 2008-2010. To simulate seed-fall, seeds were sown in fresh scarification patches in spring 2009-2011, in one-year-old patches in 2010 and 2011, and in twoyear-old patches in 2011. Both germination and seedling survival were negatively affected by the age of the scarified patches. Germination was higher, and mortality lower, at the small fern woodland site, compared with the bilberry woodland site. Sowing in fresh patches also resulted in increased height and root collar diameter of the seedlings compared with sowing in older patches. It is likely that the competing vegetation both on the site and in the scarification patches affected the growth of the seedlings. In conclusion, the age of the scarified patches affected both germination and mortality, as well as early growth of the seedlings.

show abstract

Section: Discussionsupporting

confidence: 91%

Germination and seedling establishment of Norway spruce (Picea abies) after clear-cutting is affected by timing of soil scarification

et al. 2017

View full text Add to dashboard Cite

show abstract

“…In young forest plantations, competing vegetation is often an important constraint for the growth and survival of crop tree seedlings or saplings (Balandier et al, 2006;Wagner et al, 2006). Trees and vegetation compete for main resources, namely water, nutrients and light (Löf, 2000;Nambiar and classification of actual weed competitiveness in forests, which means determining how each vegetation type alters resource availability, and how crop trees respond to these changes (Goldberg, 1996).…”

Section: Introductionmentioning

confidence: 99%

Comparaison des effets de la compétition par les graminées (Graminoïdes) et le genêt (Cytisus scoparius) sur la croissance et les traits fonctionnels de plants de hêtre (Fagus sylvatica)

Provendier¹,

Balandier

2008

Ann. For. Sci.

View full text Add to dashboard Cite

Ann. For. Sci. 65 (2008) Abstract -• The effect of two weeds (grasses and broom, Cytisus scoparius) competition on the growth and functional traits of European beech saplings (Fagus sylvatica) was investigated in an experimental plantation in the French Massif central.• We hypothesized that grasses would have a much more harmful effect than broom on beech growth through strong competition for soil water and nitrogen.• A randomized block design was used with three separate blocks, each possessing three types of vegetation; grasses (mainly Agrostis capillaris, Holcus mollis and H. lanatus), broom, and bare soil as a control.• Two years after plantation beech sapling growth was significantly greater in bare soil than with competition from grasses, and was intermediate on broom. Growth was positively correlated with beech leaf nitrogen content (N m ) and xylem water potential (Ψ x ). N and Ψ x were dependent, with nitrogen uptake probably decreasing with increasing drought. There was no clear correlation between growth and light transmitted 10 cm below the apex of the saplings.• Beech leaf mass on an area basis (LMA) was correlated with the three resource variables (water, nitrogen and light) and with growth, confirming that LMA is a sensitive functional trait integrating the degree of stress experienced by the saplings.• The results suggest that broom is less competitive than grasses and, if properly managed on a sufficiently well-watered site, can generate satisfactory conditions for beech establishment and growth.Fagus sylvatica / Cytisus scoparius / competition / nitrogen / water Résumé -Comparaison des effets de la compétition par les graminées (Graminoïdes) et le genêt (Cytisus scoparius) sur la croissance et les traits fonctionnels de plants de hêtre (Fagus sylvatica).• L'effet de la compétition de deux adventices (graminées et genêt, Cytisus scoparius) sur la croissance et les traits fonctionnels de plants de hêtre européen (Fagus sylvatica) a été expérimenté dans une plantation du Massif central.• Nous avons testé l'hypothèse selon laquelle les graminées ont un effet plus délétère que le genêt sur la croissance du hêtre à cause d'une très forte compétition pour l'eau du sol et l'azote.• Un plan d'expérience en trois blocs complets a été utilisé, chacun possédant trois types de végétation : des graminées (principalement Agrostis capillaris, Holcus mollis and H. lanatus), du genêt et un sol nu comme témoin.• Deux ans après la plantation, les plants de hêtre étaient significativement plus gros en sol nu par rapport à ceux subissant la compétition des graminées, ceux en présence du genêt étant intermédiaires. La croissance a été positivement reliée à la teneur en azote des feuilles (N m ) ainsi qu'au potentiel hydrique de xylème (Ψ x ). N m et Ψ x semblent dépendant, l'absorption d'azote diminuant avec l'augmentation de la sécheresse. Aucune corrélation significative n'a pu être mise en évidence entre la croissance des plants et la lumière transmise à 10 cm sous leur apex.• La masse foliaire rapportée à sa s...

show abstract

“…In part, this is due to a legacy of ambiguous reports (Mard 1996). As a result, intensive vegetation control has been justified to enhance conifer productivity (Lavender et al 1990;Wagner et al 2006). However, ecosystem management of mixedwood stands is favoured as it focuses on the conservation of all seral stages (Bergeron et al 1999).…”

mentioning

confidence: 99%

How much birch (Betula papyrifera) is too much for maximizing spruce (Picea glauca) growth: a case study in boreal spruce plantation forests

Hawkins¹,

Dhar²,

Rogers³

2012

J. For. Sci.

View full text Add to dashboard Cite

Interest in conifer-broadleaf mixedwood forests has greatly increased due to continuous demand for hardwood products and a shift towards more biological or ecosystem-based management. In British Columbia, more than 30% of the productive forest land is a conifer-broadleaf mixture and current forest regulations are more conifer biased rather than maintaining a mixed-species condition. The aim of this study was to examine the impact of paper birch on white spruce growth. Spruce growth data from 10 to 18 years old complex stands indicate that radial, height, and stem volume was not impacted by retaining up to 3,000 stems·ha -1 of birch. Similarly, growth and yield model projections suggest spruce-birch stands would be more productive up to a threshold birch density (3,000 stems·ha -1 ) than pure spruce stands. At a 4% real interest rate, the removal of birch from these stands does not appear to be warranted as an investment. The results suggest that instead of encouraging uniform broadleaf removal across conifer plantations, mixed species management strategies could enhance the forest productivity, stand diversity and resilience.

show abstract

The role of vegetation management for enhancing productivity of the world's forests

Cited by 253 publications

References 37 publications

Germination and seedling establishment of Norway spruce (Picea abies) after clear-cutting is affected by timing of soil scarification

Germination and seedling establishment of Norway spruce (Picea abies) after clear-cutting is affected by timing of soil scarification

Comparaison des effets de la compétition par les graminées (Graminoïdes) et le genêt (Cytisus scoparius) sur la croissance et les traits fonctionnels de plants de hêtre (Fagus sylvatica)

How much birch (Betula papyrifera) is too much for maximizing spruce (Picea glauca) growth: a case study in boreal spruce plantation forests

Contact Info

Product

Resources

About