Why Mixed Forest Plantation?

Paula, Ranieri Ribeiro; Oliveira, I.R.; Gonçalves, José Leonardo de Moraes; Ferraz, Alexandre de Vicente

doi:10.1007/978-3-030-32365-3_1

Cited by 2 publications

(1 citation statement)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…agriculture) or by natural phenomena. Worldwide, most planted forests are monocultures with native or exotic species, but mixed planted forests are increasingly established [1]. Reforestation together with afforestation is a way to reduce the pressure on natural forests and satisfy the demand of forest goods and services.…”

Section: Introductionmentioning

confidence: 99%

Mixed Forest Plantations with Native Species for Ecological Restoration in Cloud Forests of the Venezuelan Andes

Quevedo-Rojas¹,

Jerez-Rico²

2021

Silviculture

View full text Add to dashboard Cite

Tropical cloud forests play a fundamental role in the hydrological cycle of mountain watersheds having the largest biodiversity per unit area. In Venezuela, cloud forests are subject to intense deforestation and fragmentation by farming and cattle-ranching causing soil erosion, water cycle alteration, and biodiversity loss. Reforestation projects used exotic species as Pines and Eucalyptus, native species were rarely planted by lacking knowledge on species requirements and management. We report the performance of 25 native cloud forest species differing in shade-tolerance, planted in mixed assemblies on degraded areas. Tree survival and the individual tree variables: total height, root-collar diameter, tree-slenderness, and crown-ratio were evaluated at 1, 2, 4.5 and 7 years-old. Data was analyzed with a repeated measures analysis of variance mixed model considering species shade-tolerance, light intensity at planting and age as explanatory factors. Survival was over 80%. Shade-intolerant species displayed faster height and root-collar diameter growth. Shade-tolerant species had larger crown ratios due to persistence of lower branches; whereas, shade-intolerant showed signs of crown recession at age 7. Slenderness values from age 4.5 were indicative of good trees stability and health across treatments. The positive results have motivated landowners to establish native species plantations in critical areas with our support.

show abstract

Section: Introductionmentioning

confidence: 99%

Mixed Forest Plantations with Native Species for Ecological Restoration in Cloud Forests of the Venezuelan Andes

Quevedo-Rojas¹,

Jerez-Rico²

2021

Silviculture

View full text Add to dashboard Cite

show abstract

Short communication: A study case on polycyclic plantations (PP) as innovative models for sustainable combined production of noble hardwood and biomass

Plutino

Bergante

Facciotto³

et al. 2022

For. syst.

View full text Add to dashboard Cite

Aim of study: To verify the short rotation coppices (SRC) aboveground biomass production; to define the best planting intra-row spacing for walnut and poplar growth and wood production, with the last goal to assess the possibility of obtaining competitive yields in comparison to those produced by traditional monocultures. Area of study: Po Valley, municipality of Meleti (Northern Italy). Material and methods: A randomized block design with three replications was applied for the experimental design. The growth-monitoring activities started in 2009 and have continued for 5 years on the SRC, 10 years on poplar clone ‘I-214’, whereas on common walnut they are still going on but only data concerning the twelfth year are reported in this work. The normality of distribution was evaluated for growth and yield data of species in the SRC model; all data were analysed with ANOVA; growth data were included in a linear mixed model analysis to evaluate the effect of age, spacing and their interaction, and the effect of SRC rows on growth and yield of poplar and walnut. Main results: After 5 years of cultivation under SRC system, biomass yields obtained from the poplar clone ‘AF2’ were 39.9 Mg ha-1, from the elm 31.9 Mg ha-1 and from the plane 14.8 Mg ha-1. After 10 years high timber production was obtained from poplar clone ‘I-214’ (average volume 98.2 m3 ha-1). After 12 years, walnut trees reached a diameter at breast height (DBH) of 17.8±0.2, 18.9±0.2 and 18.7±0.3 cm, respectively, for planting distances of 6, 7 and 8 m, and showed diameter increments of 1.5-2.0 cm yr-1. With these growth rates, walnut can reach a merchantable dimension within 25-30-years. Research highlights: Polycyclic wood plantations are a recent arboriculture model able to produce, on the same site, different assortments using various crop trees characterized by different growth rates and turnovers. This new type of mixed plantation is more environmentally sustainable compared to monoculture and allows diversification of production, obtaining continuous wood yields over the years (5, 10, 20, 30 years).

show abstract

Why Mixed Forest Plantation?

Cited by 2 publications

References 34 publications

Mixed Forest Plantations with Native Species for Ecological Restoration in Cloud Forests of the Venezuelan Andes

Mixed Forest Plantations with Native Species for Ecological Restoration in Cloud Forests of the Venezuelan Andes

Short communication: A study case on polycyclic plantations (PP) as innovative models for sustainable combined production of noble hardwood and biomass

Contact Info

Product

Resources

About