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DocumentImprovement of reclaimed soil for sustainable wood energy forest and analysis of growth inhibitory factors by growing season of Populus euramericana
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.In this study, the effect of soil amendment and ferilization on soil physicochemical properties and tree growth(Populus euramericana) in reclaimed land was investigated. The stduy plot were established with two tillage levels and three soil additive levels: control(till 20cm, additives 0kg), T1(20cm, 4kg), T3(40cm, 8kg); each soil amendment treatments can be divided by two fertilization treatment(N: non-ferilized, F: ferilized). The first year after soil amendment treatments, NaCl and EC decreased compared to pre-treatment; however, there were no differences among the four treatments. The organic matter, total nitrogen and available phosphorus measured 3years after treatments, significantly increased compared to control while EC and NaCl notably lowered than control. Especially, EC in all treatments except the control was within the optimum range of tree growth(below 0.4dS/m). In terms of fertilization, chlorophyll concentration(SPAD) and biomass productivity in fertilization treatment were hight than no-fertilized treatment. The PCA analysis was performed to examine the relationship between soil abiotic properties and poplar growth each at the initial stage(rootage) and after rootage. The PCA analysis indicated that the major factor for poplar growth each at the initial stage was soil physical properties which play an important role in the early root development. After root development, soil pH and NaCl in the soil were the major growth inhibitory factors. This findings confirmed that the essential conditions for the efficient production of the wood energy feedstock in the reclaimed land were soil physical properties at the initial stage of (Populus euramericana) (before rootage) but soil chemical properties became important at the lateralstage of (Populus euramericana). Keywords: Adaptive and integrated management, Climate change, Economic Development ID: 3622988 -
ArticlePlant diversity and regeneration potential in forest protected areas of Sierra Leone
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Protected areas (PAs) around the globe are considered a reservoir for biodiversity conservation and an engine for ecosystem function and services. The regeneration potential of tropical forests in Protected Areas (PAs) is crucial to plant diversity and conservation, amid climate change uncertainties in the 21st century. The current status and future sustainability of PAs in Sierra Leone is uncertain and may lead to the risk of species extinction in the near future. To close this gap, we assessed the seedlings, saplings, and trees species diversity, abundance, richness and regeneration status of four PAs across Sierra Leone. We sampled 60 quadrats in total with each having a dimension of 20m × 20m. We found only a few new species with good regeneration potential in all the forest PAs we assessed, indicating that the resilience of these forests are quite low in the face of degradation. Plant diversity index and soil factors were positively correlated, indicating that a decrease or increase in soil physical and chemical properties could affect speciation. The diameter class distribution shows that the majority of plant sizes fall within the 0-30cm category. The plant species with the highest importance value index (IVI) were Uapaca guinensis (34.71), Heritiera utilis, (37.93), Guibourtia. copallifera (115.50) and Phyllocosmus africana (37.24) respectively. The results showed that the plant diversity status of forest PAs in Sierra Leone is at a crossroad. It recommended that strategic planning and forest enrichment policies be put in place to mitigate future forest exploitation. Keywords: Protected areas, Regeneration, Sierra Leone, Flora biodiversity, Seedlings, Saplings ID: 3471646 -
ArticleExploring farmers’ engagement in tree planting and management in deforested areas in Cameroon’s western highlands
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.The paper explores the motivations, challenges, negotiating strategies and barriers of communities’ participation and engagement in tree planting and management in deforested area in Cameroon’s Western Highlands. We interviewed 120 respondents, including 92 participating farmers, 21 non-participating farmers and 7 field-based staff. We used the interview responses of the farmers as constitutive items to develop dimensions and scales of motivations, challenges and barriers to ecosystem restoration volunteering. The principal components analysis with oblique (Direct oblimin) rotation together with the scree plot and eigen values (total variance explained) was used to reduce the number of items in each dimension. The Cronbach reliability statistics was used to test the reliability constitutive items in each dimension. The linear regression analysis was used to examine how the different dimensions of motivations, challenges and barriers influence community ecosystem restoration stewardship volunteering. Community volunteering were initially driven by environmental factors only when personal economic and less so community benefits were met. Social dimension items were least perceived and were non-significant predictors of the community ecosystem restoration stewardship. Retaining and committing the restoration stewards to tree planting were mainly limited by management, financial, psychological and geographical location challenges. Non-participation and -involvement of some farmers was driven by economic, information, psychological and personal barriers. Negotiating strategies and recommendations are proposed to overcome the identified challenges and barriers. The local knowledge on ecosystem restoration stewardship motivations, challenges, barriers and negotiation strategies will inform policy and practice and improve on the success and sustainability of community- led ecosystem restoration initiatives in Cameroon and in other Central African countries. Keywords: ecosystem restoration motivations; ecosystem restoration challenges; ecosystem restoration barriers, negotiation strategies; ecosystem restoration volunteering; sustainable land management ID: 3617625
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