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Modelling the growing space of parkia biglobosa benth for agroforestry project

XV World Forestry Congress, 2-6 May 2022









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    Modeling CO2 restoration potential of mangrove ecosystems in Pakistan to support urban green spaces and human well-being
    XV World Forestry Congress, 2-6 May 2022
    2022
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    Abstract: Pakistan is facing major climate change challenges since in recent years, the annual mean temperature has increased by 0.5°C in the country. Karachi is the largest city and highly vulnerable to fatal heatwave events trolling maximum deaths and illness in recent years. Coast of Mangrove Forest (MF) plays an important role in daily temperature, local environment, and microclimatic conditions. It is a well-established scientific reality that carbon traps heat in the air, and now observing a dramatic rise in temperature. The study aimed to evaluate the vulnerability of the communities to heat-stress, and categorize the role of Mangrove Ecosystem Services to mitigate future disasters. Coupled models and GIS/RS tools were used to estimate the suitability of MF land-cover to categorize the latent status. Heatwaves during summer for three days were calibrated by the models which resulted that an inundation of CO2 stress factors, 250 (S-u=1.0) with a rise in temperature up to 44°C with 70% humidity causes more deaths under heat-periods. Our results linked heatwaves with climate warming and extreme weather events, aggravated by rapid urbanization, industrialization, deforestation, emission of CO2, degradation of MF, and land-use change. Moreover, findings revealed that there is a significant drop-off in urban greenspaces and growth in built-up areas during 1984-2016. In addition, the SILVA-model projected that MF around the city has the ability to absorb CO2 emission up to 55.4 million tons. SILVA-growth projected that 43.61% CO2 stock can be deposited by MF which contributes 19% of the ecosystem. Model showcase that rehabilitation of 30-mangrove trees per/100m2 possibly reduce the extreme tide of heat stress, tsunami, CO2, and improve the air-quality index of the city. This study provides initial assessment and policy directions to rehabilitate MF to promote sustainable cities and societies. Key Words: CO2, urban green spaces, disaster risk reduction, extreme weather events ID: 3471412
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    Yield prediction model for falcata (paraserianthes falcataria (L.) Nielsen) in falcata-based agroforestry systems in Misamis Oriental, Philippines
    XV World Forestry Congress, 2-6 May 2022
    2022
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    Sustainable adaption of Falcata-based agroforestry systems and improve tree component productivity in Misamis Oriental necessitates derivation of quantitative information on yield. The project was conducted to determine the yield of Falcata planted in agroforestry systems considering various stand characteristics, physiographic characteristics, cultural practice, and pest incidence. A total of 360 rectangular temporary sample plots (1000 m2 or 20 m x 50 m) across 3 cities and 15 municipalities were established. Diagnostic tests, correlation analysis, and multiple regression analysis were used to develop the Falcata yield, prediction model. The result showed that the yield of Falcata under woodlot, boundary planting, alley cropping, multistorey, intercropping, and taungya agroforestry systems can be explained by age, merchantable height, site index, and spacing. The final yield model for Falcata is sqrtVolume (m3) = 0.1841444 - 10.42376*1/SI + 0.0029367*SP + 0.0842593*A + 0.0473169*MH. The newly developed model will serve as a guide in decision-making as to the right time to harvest, appropriate density, a suitable site for the establishment, and the right merchantable height for greater productivity. Keywords: Falcata, agroforestry, yield, volume, model ID: 3623089
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    Sustainable business models of wood construction: Cases of six Swedish timber building extension projects
    XV World Forestry Congress, 2-6 May 2022
    2022
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    Construction activities highly contribute to negative environmental impacts. These impacts can be reduced with the help of several measures, one of which is through using wood in building constructions. Sweden has a long history of constructing one or two-storey buildings made of wood and in the recent decades, there has been an improved understanding of the technical and environmental benefits associated with wood construction. The urbanization trends and population growth results in the need to renovate/extend existing buildings. Wood, having an excellent strength-to-weight ratio, opens the opportunity for “building on top” of the existing constructs. In this paper, six Swedish cases of timber building extension projects have been studied. The study aimed at presenting the sustainable business model of timber building extension projects. In sustainable business models, the focus shifts from plain economical aspects to also taking the social and environmental factors into consideration. It, therefore, takes a broader perspective over the activities of the stakeholders involved in the value chain of wood construction. A more comprehensive view over such activities, can lead to redesigning them towards waste minimization and value delivery to a wider array of stakeholders, while ensuring the economic sustainability of projects. This was achieved in this study through first, depicting the business models of these projects by identifying the main activities, resources, actors, and challenges involved in the building projects of the six cases. Consequently, a list of success factors for increasing sustainability in these business models were proposed. Keywords: sustainable business models; wood construction; building extension projects; Sweden; value chain ID: 3612831

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