Site Preparation Techniques for Forest Restoration

2015 ◽  
pp. 100-117
Keyword(s):  
Forest Restoration ◽  
Site Preparation ◽  
Preparation Techniques

scholarly journals Four Site-Preparation Techniques for Regenerating Pine-Hardwood Mixtures in the Piedmont

1997 ◽  
Vol 21 (3) ◽  
pp. 116-122 ◽  
Author(s):  
Thomas A. Waldrop
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Height Growth ◽  
Site Preparation ◽  
Site Conditions ◽  
Growing Seasons ◽  
Southern Appalachian ◽  
Medium Quality ◽  
Pinus Taeda L ◽  
Preparation Techniques

Abstract Four variations of the fell-and-burn technique, a system developed to produce mixed pine-hardwood stands in the Southern Appalachian Mountains, were compared in the Piedmont region. All variations of this technique successfully improved the commercial value of low-quality hardwood stands by introducing a pine component. After six growing seasons, loblolly pine (Pinus taeda L.) occupied the dominant crown position and oaks the codominant position in fell-and-burn treated stands on poor to medium quality sites. The precise timing of felling residual stems, as prescribed by the fell-and-burn technique, may be flexible because winter and spring felling produced similar results. Although summer site preparation burns reduced hardwood height growth by reducing the length of the first growing season, they did not improve pine survival or growth. Pines were as tall as hardwoods within four growing seasons in burned plots and within six growing seasons in unburned plots. Additional research is needed to determine the level or intensity of site preparation needed to establish pine-hardwood mixtures over a range of site conditions. South. J. Appl. For. 21(3):116-122.

scholarly journals A Comparative Analysis of the Piezoelectric Ultrasonic Appliance and Trephine Bur for Apical Location: An In Vitro Study

2021 ◽  
Vol 11 (10) ◽  
pp. 1034
Author(s):  
Esther Cáceres Madroño ◽  
Paulina Rodríguez Torres ◽  
Soraya Oussama ◽  
Álvaro Zubizarreta-Macho ◽  
María Bufalá Pérez ◽  
...  
Keyword(s):  
Study Groups ◽  
Experimental Models ◽  
Site Preparation ◽  
T Test ◽  
Entry Point ◽  
Osteotomy Site ◽  
End Point ◽  
Planning Software ◽  
Preparation Techniques

To compare and contrast the accuracy of piezoelectric ultrasonic insert (PUI) and trephine bur (TB) osteotomy site preparation techniques for apical location. (1) Material and methods: A total of 138 osteotomy site preparations were randomly distributed into one of two study groups. Group A: TB technique (n = 69) and B: PUI technique (n = 69). A preoperative cone-beam computed tomography scan and an intraoral scan were performed and uploaded to implant-planning software to plan the virtual osteotomy site preparations for apical location. Subsequently, the osteotomy site preparations were performed in the experimental models with both osteotomy site preparation techniques and a postoperative CBCT scan was performed and uploaded into the implant-planning software and matched with the virtually planned osteotomy site preparations to measure the deviation angle and horizontal deviation as captured at the coronal entry point and apical end-point between osteotomy site preparations using Student’s t-test statistical analysis. (2) Results: The paired t-test found statistically significant differences at the coronal entry-point deviations (p = 0.0104) and apical end-point deviations (p = 0.0104) between the TB and PUI study groups; however, no statistically significant differences were found in the angular deviations (p = 0.309) between the trephine bur and piezoelectric ultrasonic insert study groups. (3) Conclusions: The results showed that the TB is more accurate than the PUI for apical location.

scholarly journals Study on site preparation and restoration techniques for forest restoration in mining tailings of Mariana, Brazil

2021 ◽  
Vol 2 (4) ◽  
Author(s):  
Sebastião Venâncio Martins ◽  
Pedro Manuel Villa ◽  
Fabio Haruki Nabeta ◽  
Leonardo Ferreira Da Silva ◽  
Gabriel Correa Kruschewsky ◽  
...  
Keyword(s):  
Plant Community ◽  
Forest Restoration ◽  
Site Preparation ◽  
Dam Failure ◽  
Positive Effects ◽  
Mining Tailings ◽  
Tree Community ◽  
Active Restoration ◽  
Substrate Properties ◽  
Substrate Fertility

Ecological restoration in forest ecosystem affected by the Fundão tailings dam failure is a national priority in Brazil. Thus, we evaluated the effects of passive and active restoration methods through different site preparation techniques by manipulating physical-chemical properties of substrates on tree community coverage in Mariana, Brazil. A total of 48 plots (12 × 12 m each) were established in two areas along the flood plains with accumulation of tailings. The following treatments were established: i) planting of native tree seedlings with fertilization and ii) without fertilization; iii) direct seeding of native trees with fertilization and iv) without fertilization; v) natural regeneration with fertilization and vi) without fertilization. Differences in substrate properties and tree community coverage were evaluated between treatments, the substrate properties and tree community coverage relationship, and main effects of substrate fertility and texture on tree community coverage. There were marked differences in substrate and plant coverage between treatments, maintaining a similar pattern in fertilizer treatments. There is a strong relationship between substrate fertility and plant community coverage, with significant positive effects. It was observed that the passive and active restoration methods can be complementary in the soil and plant community coverage recovery in the areas affected by the mining tailings in Mariana region. 

scholarly journals Comparison of different site preparation techniques: quality of planting spots, seedling growth and pine weevil damage

New Forests ◽  
2018 ◽  
Vol 49 (6) ◽  
pp. 705-722 ◽  
Author(s):  
Kristina Wallertz ◽  
Niklas Björklund ◽  
Karin Hjelm ◽  
Magnus Petersson ◽  
Lars-Göran Sundblad
Keyword(s):  
Seedling Growth ◽  
Site Preparation ◽  
Pine Weevil ◽  
Preparation Techniques

Mechanical site preparation for forest restoration

New Forests ◽  
2012 ◽  
Vol 43 (5-6) ◽  
pp. 825-848 ◽  
Author(s):  
Magnus Löf ◽  
Daniel C. Dey ◽  
Rafael M. Navarro ◽  
Douglass F. Jacobs
Keyword(s):  
Forest Restoration ◽  
Site Preparation ◽  
Mechanical Site Preparation
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