scholarly journals Soil scarification favors natural regeneration of Pinus pinea in Lebanon forests: Evidences from field and laboratory experiments

2020 ◽  
Vol 459 ◽  
pp. 117840
Author(s):  
Joseph Nakhoul ◽  
Mathieu Santonja ◽  
Catherine Fernandez ◽  
Stéphane Greff ◽  
Anne Bousquet-Mélou ◽  
...  
Keyword(s):  
Natural Regeneration ◽  
Laboratory Experiments ◽  
Pinus Pinea ◽  
Soil Scarification

scholarly journals Natural Regeneration in a Multi-Layered Pinus sylvestris-Picea abies Forest after Target Diameter Harvest and Soil Scarification

Forests ◽  
2017 ◽  
Vol 8 (2) ◽  
pp. 35 ◽  
Author(s):  
Lars Drössler ◽  
Nils Fahlvik ◽  
Natalia Wysocka ◽  
Karin Hjelm ◽  
Christian Kuehne
Keyword(s):  
Picea Abies ◽  
Pinus Sylvestris ◽  
Natural Regeneration ◽  
Soil Scarification

scholarly journals Effect of soil scarification on natural regeneration of mature scots pine (Pinus sylvestris) stands in Greece

2014 ◽  
Vol 16 (4) ◽  
pp. 732-742 ◽  
Keyword(s):  
Scots Pine ◽  
Natural Regeneration ◽  
Climatic Conditions ◽  
Ground Vegetation ◽  
Soil Scarification ◽  
Pine Stands ◽  
Scots Pine Forest ◽  
Set Up ◽  
Positive Effect ◽  
Scots Pine Stands

<div> <p>The natural regeneration of Scots pine stands at the Sarakatsana location in the Pieria Mountains improved considerably after the removal of the dense ground vegetation followed mechanical soil scarification. The experimental design consisted of replications on scarified and non-scarified soil. The results four years after the experiment was set up showed that regeneration reached 59 seedlings m-2 in scarified and 7 seedlings m-2 in non-scarified soil. Soil scarification seems to have had a positive effect on the emergence and survival of naturally regenerated Scots pine. The negligible number of dead seedlings in the first two measurements could be due to the favourable site and/or good climatic conditions. Although the mother stand appears to be in a critical condition due to age and increased necrosis as a result of fungal attacks, there is still considerable potential for regeneration in terms of fructification and seed production. The study findings indicate that there can be new growth of Scots pine forest with the shelterwood method of natural regeneration in combination with soil scarification.</p> </div> <p>&nbsp;</p>

Spatio-temporal variation of natural regeneration in Pinus pinea and Pinus pinaster Mediterranean forests in Spain

2019 ◽  
Vol 138 (2) ◽  
pp. 313-326 ◽  
Author(s):  
Marta Vergarechea ◽  
Miren del Río ◽  
Javier Gordo ◽  
Rebeca Martín ◽  
David Cubero ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Natural Regeneration ◽  
Pinus Pinaster ◽  
Pinus Pinea ◽  
Mediterranean Forests ◽  
Spatio Temporal

Modeling the environmental response of leaf net photosynthesis in Pinus pinea L. natural regeneration

2013 ◽  
Vol 251 ◽  
pp. 9-21 ◽  
Author(s):  
Rafael Calama ◽  
Jaime Puértolas ◽  
Guillermo Madrigal ◽  
Marta Pardos
Keyword(s):  
Natural Regeneration ◽  
Net Photosynthesis ◽  
Pinus Pinea ◽  
Environmental Response

scholarly journals A role of the mechanical preparation of soil in the natural regeneration of pedunculate oak (Quercus robur L.) in floodplain forests

2012 ◽  
Vol 51 (No. 8) ◽  
pp. 371-379
Author(s):  
K. Houšková
Keyword(s):  
Natural Regeneration ◽  
Seedling Emergence ◽  
Soil Surface ◽  
Floodplain Forest ◽  
Pedunculate Oak ◽  
Mechanical Preparation ◽  
Soil Scarification ◽  
Before And After ◽  
The Subject

The subject of our research was to verify effects of the mechanical preparation of soil in the natural regeneration of pedunculate oak in a floodplain forest. On the site of a&nbsp;hard-wooded floodplain forest at the confluence of the Morava and Dyje rivers (Czech Republic), several sample plots were established differing in the preparation of soil during regeneration, in weeding the plots and in the period of the implementation of soil surface scarification before and after the fall (or distribution) of acorns. On the basis of results obtained, mechanical preparation of soil on non-weed-infested plots in the heavy seed year is not necessary, however, it supports seedling emergence from acorns and eliminates weed tree emergence and weed. However, it is better to realize it only after the fall of acorns and to incorporate them into soil and thus their emergence will be increased. Soil scarification can be carried out also in the course of harvesting the parent stand through the extraction of wood and slash from the regenerating area. In weed-infested stands, however, the thorough preparation of soil before the fall of acorns appears to be a necessity.

Modelling Pinus pinea forest management to attain natural regeneration under present and future climatic scenarios

2014 ◽  
Vol 44 (3) ◽  
pp. 250-262 ◽  
Author(s):  
Rubén Manso ◽  
Timo Pukkala ◽  
Marta Pardos ◽  
Jari Miina ◽  
Rafael Calama
Keyword(s):  
Forest Management ◽  
Seed Production ◽  
Natural Regeneration ◽  
Sustainable Forest Management ◽  
Seedling Survival ◽  
Pinus Pinea ◽  
Regeneration Failure ◽  
Climatic Scenarios ◽  
Rotation Age

Natural regeneration-based silviculture has been increasingly regarded as a reliable option in sustainable forest management. However, successful natural regeneration is not always easy to achieve. Recently, new concerns have arisen because of changing future climate. To date, regeneration models have proved helpful in decision-making concerning natural regeneration. The implementation of such models into optimization routines is a promising approach in providing forest managers with accurate tools for forest planning. In the present study, we present a stochastic multistage regeneration model for Pinus pinea L. managed woodlands in Central Spain, where regeneration has been historically unsuccessful. The model is able to quantify recruitment under different silviculture alternatives and varying climatic scenarios, with further application to optimize management scheduling. The regeneration process in the species showed high between-year variation, with all subprocesses (seed production, dispersal, germination, predation, and seedling survival) having the potential to become bottlenecks. However, model simulations demonstrate that current intensive management is responsible for regeneration failure in the long term. Specifically, stand densities at rotation age are too low to guarantee adequate dispersal, the optimal density of seed-producing trees being around 150 stems·ha−1. In addition, rotation length needs to be extended up to 120 years to benefit from the higher seed production of older trees. Stochastic optimization confirms these results. Regeneration does not appear to worsen under climate change conditions; the species exhibiting resilience worthy of broader consideration in Mediterranean silviculture.

Natural regeneration of jack pine on clay soils following harvesting and site preparation: Seventh-year results

2010 ◽  
Vol 86 (4) ◽  
pp. 423-433 ◽  
Author(s):  
Martin Béland ◽  
Sébastien Calmels ◽  
Yves Bergeron
Keyword(s):  
Natural Regeneration ◽  
Pinus Banksiana ◽  
Block Design ◽  
Jack Pine ◽  
Clay Soils ◽  
Pine Plantation ◽  
Mixed Stands ◽  
Growing Seasons ◽  
Randomized Complete Block Design ◽  
Soil Scarification

This study examines the operational feasibility of six treatments to regenerate jack pine (Pinus banksiana Lamb.) naturally without fire following harvesting on clay soils in the southeastern boreal forest of Quebec. The experiment is a randomized complete block design. Techniques used were a final cutting in 1993 with manual on-site delimbing or roadside delimbing combined with three methods of soil scarification (WadellTM, La TaupeTM and a control) performed in the Spring of 1994 compared to an adjacent jack pine plantation established in 1994 after Wadell scarification. Seven growing seasons later, the present article compares stand composition, competing vegetation, regeneration and growth of jack pine between the different treatments as well as an adjacent plantation. Natural regeneration produced mixed stands with an adequate 52% average jack pine stocking. Roadside and on-site delimbing produced similar jack pine stocking on average. However, the plantation showed 83% stocking and better performance than natural regeneration in terms of height (2.48 m vs. 1.7 m for natural regeneration), diameter (41 mm vs. 22 mm for natural regeneration) and jack pine dominance. Therefore, if natural regeneration is desired, roadside delimbing is to be recommended since it provides sufficient seed and does avoid early jack pine growth reductions caused by slash. On clay soils, scarification seems to have been optional. Nevertheless, it slightly increased seedling growth and in this way, the treatment combining road-side delimbing and an extensive scarification can be an effective jack pine natural regeneration treatment.Key words: Pinus banksiana Lamb., natural regeneration, stocking coefficient, delimbing, scarification, boreal mixed wood, seedlings

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