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DocumentPerformance of inclined self-tapping screw: Effect of the thin wood part in inclined screw connection on shear and withdrawal resistance
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.The aim of this study was to investigate the effect of thin wood part on the load-carrying capacity of inclined self-tapping screw. Two components of load-carrying capacity (withdrawal and shear capacity) were tested to examine the effect of thin wood part. Combined load-carrying capacity of inclined screw loaded upward was also tested and compared with the prediction value from EN 1995-1-1. Screws were installed in Glued-laminated timber (GLT) and two different dimensions of screws (Ø8.0 × 100 mm, Ø6.5 × 65 mm) were selected. As a result, thin wood part affected relatively little on the withdrawal capacity, compared to the shear capacity. EN showed conservative result in combined load-carrying capacity, even though shear capacity of inclined screw declined due to thin wood part. Keywords: Climate change ID: 3622020 -
DocumentSFI education and job matching programs expand and deepen youth connection to forests and build future forest and conservation leaders
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.The Sustainable Forestry Initiative (SFI) believes that building a next generation of leadership that will take responsibility for solving environmental challenges is one of the best investments a society can make. Promoting an appreciation for the natural world is a key component of SFI’s work because it helps ensure youth can be effective future leaders and have a strong understanding of the value of well managed forests.
Project Learning Tree, SFI’s environmental education program, advances environmental literacy, stewardship, and career pathways using trees and forests as windows on the world. Encouraging children to spend time outside improves creativity, imagination, academic achievement, and overall health and fitness.
PLT tools, resources and training are designed for educators, parents, and community leaders working with youth from preschool through college and university. PLT’s Nature Activities for Families offers fun and easy-to-do activities are perfect for parents and grandparents to help introduce children to nature. For educators, PLT has recently released Explore Your Environment, K-8 Activity Guide to support learning from grades K through 8. It includes online professional development to train educators and those that engage with youth in using the resource. Project Learning Tree Canada is Connecting Youth with Green Jobs and Forest Mentors
PLT Canada is committed to using the outdoors to engage youth in learning about the world around them—in rural, Indigenous and urban communities—and advancing environmental literacy, stewardship, and career pathways.
By 2022, in partnership with the Government of Canada, PLT Canada will have supported over 5,000 green jobs in the forest and parks sectors. Our expanding mentorship program connects youth directly to forest and conservation sector professionals. These SFI education programs provide opportunities for forest leaders to build bridges to future generations. Keywords: Youth and young generation, Education, Sustainable forest management, Decent employment ID: 3478920 -
DocumentThe early growth performances of Pinus densiflora and Larix kaempferi seedlings under open-field experimental warming and precipitation manipulation
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.This study aimed to investigate the effects of climate change on the survival and growth performance of Pinus densiflora and Larix kaempferi seedlings using open-field experimental warming and precipitation manipulation. We measured the survival rate, root-collar diameter, and height, and then calculated the seedling quality index (SQI) of 2-year-old seedlings under 6 treatments [2 temperatures (TC: Control; TW: Warming) × 3 precipitation manipulations (PC: Control; PD: Decreased; PI: Increased)] and performed a two-way ANOVA to test for differences. The air temperature of the warming plots was 3°C higher than that of the control plots, while the precipitation manipulation plots received ±40% of the precipitation received by the control plots. Temperature and precipitation treatments did not significantly affect the survival rate of P. densiflora; however, the SQI of P. densiflora decreased with increasing precipitation. In contrast, the mortality rate of L. kaempferi increased with increasing temperature and decreasing precipitation. Furthermore, in L. kaempferi, TC × PI treatment resulted in the lowest SQI with a significant interaction effect observed between the two factors. In summary, low seedling production and quality should be expected in P. densiflora as precipitation increases and in L. kaempferi as temperature increases or precipitation decreases. These results indicate species-specific sensitivities to climate change of two plant species at the nursery stage. With the occurrence of global warming, the frequencies of drought and heavy rainfall events are increased, and this could affect the survival and seedling quality of tree species. Therefore, it is necessary to improve nursery techniques by establishing new adaptation strategies based on species-specific growth performance responses. 1) Keywords: Climate change ID: 3622385
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