Effect of first thinning and pruning on the individual growth of Pinus patula tree species

Missanjo, Edward; Kamanga-Thole, Gift

doi:10.1007/s11676-015-0104-2

Cited by 10 publications

(9 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The growth of 22-year-old P. patula trees showed differences in the distribution of height frequency as an effect of thinning treatment after removing 63% of the stem density. Similar results have been reported in 14-year-old P. patula plantations treated with low thinning intensity, removing 35% of stems [50], and high thinning intensity, removing between 55 to 70% of stems [51]. Our results showed that most of the trees in the unthinned stands presented a non-normal height distribution with heights higher than 20 m, whereas trees in the thinned stands presented normal distributions with a mean value of around 20 m. Our results agree with previous studies indicating that thinning reduces intraspecific competition for sunlight, water, and nutrients between trees, which causes the trees to decrease their primary growth in height and increase secondary growth in diameter [52][53][54].…”

Section: Stem Growthsupporting

confidence: 89%

“…This positive effect on growth in diameter and volume of trees meets one of the objectives of thinning to produce trees with a larger trunk and higher DBH [16,54]. Studies on the response to thinning of P. patula plantations by removing 30% of the stems showed similar results with a mean increase in diameter growth of up to 3.9 cm [50] and up to 0.12 m 3 per tree [51].…”

Section: Stem Growthmentioning

confidence: 70%

See 1 more Smart Citation

Novel Yield Model of Pinus patula Schltdl. & Cham. Growth near the Ecological Limit in Northwestern Peruvian Andes

Rodríguez

Hevia²,

Sánchez‐Salguero³

et al. 2022

Forests

View full text Add to dashboard Cite

Forest plantations with exotic species in the northwestern Peruvian Andes have brought different ecosystem benefits. The wood productivity in this Páramo region is directly related to the great availability of water from abundant rainfall compared to other regions of the semi-arid Andes. To address the lack of information on forest inventories of plantations in the Páramo region, this study used annual growth rings (dendrochronology) to build new models of tree growth and wood productivity and compared 22-year-old Pinus patula plots with thinning and unthinning treatments. Our results show that late thinning, removing 63% of stem density in the 15th year, does not have significant effects on the diameter increase or stand-level productivity. For these plantations, we propose a management rotation of 21 years with a first thinning treatment (35%) at 5 years and a second thinning treatment (50%) at 12 years. Production at 21 years is expected to be between 194.6 m3 ha−1 and 504.6 m3 ha−1 for stands with low and high wood productivity, respectively. Tree-ring studies are potentially useful for monitoring forest plantations and provide an alternative method for forest managers who use allometric equations to predict silvicultural treatments and to propose management guides for plantations.

show abstract

Section: Stem Growthsupporting

confidence: 89%

Section: Stem Growthmentioning

confidence: 70%

Novel Yield Model of Pinus patula Schltdl. & Cham. Growth near the Ecological Limit in Northwestern Peruvian Andes

Rodríguez

Hevia²,

Sánchez‐Salguero³

et al. 2022

Forests

View full text Add to dashboard Cite

show abstract

“…Intermediate cuttings allow productivity of the stand to increase. It has been shown that thinning and pruning can increase the value of the final harvest by increasing the merchantable volume, size, and wood quality [53].…”

Section: Comparison Of Sub-stand Variables Of the Three Forest Manage...mentioning

confidence: 99%

Comparative Analysis of Three Forest Management Plans in Southern Mexico

Santiago-García

Bautista-Pérez

Rodríguez-Ortiz

et al. 2022

Forests

View full text Add to dashboard Cite

In the middle of the last century, the Mexican government applied a forest administration policy based on state control through concessions to parastatal enterprises. In the 1980s, communities began to regain control of their forests and promote community forestry, with Ixtlán playing a leading role. This study compared three forest management plans (FMPs) that have been implemented in the community of Ixtlán de Juárez, in southern Mexico, and their contributions to the productivity and conservation of forest resources. The information was obtained from three FMPs, considering the silvicultural regimes, the original stand or sub-stand structure, and the species that promoted cutting regeneration. These FMPs represent different management periods; the forest inventory of the first FMP indicates the condition of the forest originated under state control, while the two subsequent ones evaluate the condition of the forest under community forestry. Sub-stand variables of the three FMPs were compared using the nonparametric Kruskal–Wallis test. The results indicated that, in the first FMP, the sub-stands were of old growth, and intensive thinning was applied. In the two subsequent plans, alternate strip clearcutting and single-tree selection were implemented. It was shown that, with increased management intensity in the sub-stands, better characteristics were obtained in terms of increment in basal area and volume variables, promoting regeneration and establishment of Pinus and displacing dominance of Quercus genus, without affecting forest richness and diversity.

show abstract

“…For the production of sawn timber, both dead and live branches up to a height of 7(−12) m ("high pruning") are removed to produce knot-free wood [5]. In a thinning trial, in Malawi, Missanjo et al [16] studied the effect of first thinning and pruning on height, diameter at breast height, and volume growth in individual trees. The authors concluded about the importance of both practices in P. patula plantations, recommending their use to maximize the increase in volume production.…”

Section: Silvicultural Guidelinesmentioning

confidence: 99%

Pinus patula Plantations in Africa: An Overview of Its Silvicultural Traits and Use under SDG

Tadesse¹,

Fonseca²

2022

Conifers - Recent Advances

View full text Add to dashboard Cite

Pinus patula Schiede ex Schltdl. & Cham. is a forest tree species native to Mexico, widely cultivated in tropical and subtropical regions of the world. In Africa, the plantation of the species has gained considerable interest being represented in different African countries, and probably being the most widely planted pine in tropical Africa. The species traits and the diversity of wood use to highlight the importance and usefulness of the species in the tropical regions of the African continent. The aim of this chapter is to review the state-of-the-art on the knowledge of the species, namely their characteristics and their growth dynamics, present information on productions, silvicultural management and biotic vulnerabilities, and summarize the effects on biodiversity and relevance on carbon stock. Knowledge of species biological and silvicultural traits supports decision-making on sustainable forest management and contributes to the achievement of the Sustainable Development Goals of UN Agenda 2030.

show abstract

Effect of first thinning and pruning on the individual growth of Pinus patula tree species

Cited by 10 publications

References 24 publications

Novel Yield Model of Pinus patula Schltdl. & Cham. Growth near the Ecological Limit in Northwestern Peruvian Andes

Novel Yield Model of Pinus patula Schltdl. & Cham. Growth near the Ecological Limit in Northwestern Peruvian Andes

Comparative Analysis of Three Forest Management Plans in Southern Mexico

Pinus patula Plantations in Africa: An Overview of Its Silvicultural Traits and Use under SDG

Contact Info

Product

Resources

About