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ArticleJournal articleInfluence of snow cover change and temperature anomalies on the transformation of boreal forests and fires in north Asia
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.In the last three decades, the number and area of fires in the North Asian taiga, forest-tundra and tundra is increasing. Analysis of spatial data on fires against the information on local climate anomalies indicates significant correlation. The estimates are generally based on average seasonal temperatures and the duration of the vegetation period; however, while these parameters are useful for global bioclimatic regularities, they are not sufficient for local forest change influenced by small-scale climate effects. Comparison of satellite images at the beginning and the end of the snow period with patterns of fire activities shows that the frequency and scale of temperature and snow anomalies are also key factors. Field studies that aimed to verify the snow properties as identified through satellite imagery were carried out on more than 200 plots in the Urals and the Russian Far East. It was found out that tree crowns of dark-coniferous and mixed forests intercept up to a quarter of total snow reducing accumulation and decreasing snowmelt logging. This leads to the desiccation of the soil layer in spring and increases the risk of fires in forests, where this risk used to be low. Another important effect is the increased frequency of dry and hot autumns in taiga and forest-tundra, which dramatically aggravate the risk of litter ignition. Field observations and analysis of satellite images for 30 years give information on the spatial differentiation of the effects. The higher risk of fires associated with the redistribution of snow by tree crowns is typical of the south and central taiga. Soil desiccation in autumn is the important factor for fires in the north taiga and forest-tundra. These effects are additional to the seasonal temperature anomalies, which are the key risk factor. Taking account of these effects in context of the global warming provides better estimation of fires, including the risk of fires in unique forests on protected areas in North Asia. Keywords: Climate change, Adaptive and integrated management, Biodiversity conservation, Sustainable forest management, Research ID: 3485018 -
DocumentOther documentManaging taxonomic and functional diversity is the key to sustain aboveground biomass and soil microbial diversity: A synthesis from long-term forest restoration of southern China
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Exploring the biodiversity-ecosystem functioning relationship is one of the central goals of ecological research. Restoration is essential for supporting key ecosystem functions such as aboveground biomass production and managing soil microbial diversity. However, the relative importance of functional versus taxonomic diversity in explaining aboveground biomass and soil microbial diversity during restoration is poorly understood. Here, we used a trait-based approach to test for the importance of multiple plant diversity attributes in regulating aboveground biomass and soil microbial diversity in four 30- years-old restored subtropical forests in southern China. High-throughput Illumina sequencing was applied for detecting fungal and bacterial diversity. We show that both taxonomic and functional diversities are significant and positive regulators of aboveground biomass; however, functional diversity (FD) was more important than taxonomic diversity (TD) in controlling aboveground biomass. FD had the strongest direct effect on aboveground biomass compared with TD, soil properties, and community weighted mean (CWM) traits. Our results further indicate that leaf and root morphological traits and traits related to the nutrient content in plant tissues showed acquisitive resource use strategy which influenced aboveground biomass. In contrast to aboveground biomass, taxonomic diversity explained more of the soil microbial diversity than the FD and soil properties. Prediction of fungal richness was better than that of bacterial richness. In addition, root traits explained more variation of soil microbes than the leaf traits. Our results suggest that both TD and FD play a role in shaping aboveground biomass and soil microbial diversity; but FD is more important in supporting aboveground biomass while TD for belowground microbial diversity. These results imply that enhancing TD and FD is important to restoring and managing degraded forest landscapes. Key words: Biodiversity-Ecosystem functions; soil microbial diversity, taxonomic diversity, functional diversity, forest restoration ID: 3486373 -
ArticleJournal articleBudgetary and property evaluation of bamboo products: The case of forestry research institute of Nigeria
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.The increasing difficulty in sourcing timber species in Nigeria necessitates seeking for alternatives species. Providing alternative species requires knowledge on the technical properties and budgetary evaluation particularly in relation to their utilization. Bambusa vulgaris from available evidence had been used for light construction and production in some parts of Nigeria; however, there is dearth of information on its technical properties and budgetary evaluation. Therefore, this study was conducted to evaluate selected properties and budgetary evaluation of Bamboo. Bamboo culms were harvested, processed into valuable products such as Tables, Chairs, Bed, flower vases, lamp stands and many other household items with detail analysis on the cost of production in either round or laminated form. The technical properties considered include: Modulus of rupture (MOR) and Modulus of elasticity (MOE), while the budgetary analysis include: Rate of Returns on Investment and cost benefit analysis of the production. Result of the properties shows that the mean MOE of B. vulgaris was 4556.21±98.42N/mm2. While mean MOR of B. vulgaris was 51.88±112.80N/mm. The Rate of Returns (RORI) of bamboo furniture is above 60% and Cost Benefit Ratio is higher than 1. There are potentials in utilizing bamboo for the production of structural materials being a medium density wood and slightly dimensionally stable. It is also a profitable venture for utilization and it has the potential of serving as a suitable alternative to the scarce tropical timber species Keywords: Value chain, Research, Innovation, Sustainable forest management, Financial mechanisms ID: 3474266
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Book (series)FlagshipThe State of Food Security and Nutrition in the World 2021
Transforming food systems for food security, improved nutrition and affordable healthy diets for all
2021In recent years, several major drivers have put the world off track to ending world hunger and malnutrition in all its forms by 2030. The challenges have grown with the COVID-19 pandemic and related containment measures. This report presents the first global assessment of food insecurity and malnutrition for 2020 and offers some indication of what hunger might look like by 2030 in a scenario further complicated by the enduring effects of the COVID-19 pandemic. It also includes new estimates of the cost and affordability of healthy diets, which provide an important link between the food security and nutrition indicators and the analysis of their trends. Altogether, the report highlights the need for a deeper reflection on how to better address the global food security and nutrition situation.To understand how hunger and malnutrition have reached these critical levels, this report draws on the analyses of the past four editions, which have produced a vast, evidence-based body of knowledge of the major drivers behind the recent changes in food security and nutrition. These drivers, which are increasing in frequency and intensity, include conflicts, climate variability and extremes, and economic slowdowns and downturns – all exacerbated by the underlying causes of poverty and very high and persistent levels of inequality. In addition, millions of people around the world suffer from food insecurity and different forms of malnutrition because they cannot afford the cost of healthy diets. From a synthesized understanding of this knowledge, updates and additional analyses are generated to create a holistic view of the combined effects of these drivers, both on each other and on food systems, and how they negatively affect food security and nutrition around the world.In turn, the evidence informs an in-depth look at how to move from silo solutions to integrated food systems solutions. In this regard, the report proposes transformative pathways that specifically address the challenges posed by the major drivers, also highlighting the types of policy and investment portfolios required to transform food systems for food security, improved nutrition, and affordable healthy diets for all. The report observes that, while the pandemic has caused major setbacks, there is much to be learned from the vulnerabilities and inequalities it has laid bare. If taken to heart, these new insights and wisdom can help get the world back on track towards the goal of ending hunger, food insecurity, and malnutrition in all its forms. -
BookletHigh-profileFAO Strategy on Climate Change 2022–2031 2022The FAO Strategy on Climate Change 2022–2031 was endorsed by FAO Council in June 2022. This new strategy replaces the previous strategy from 2017 to better FAO's climate action with the Strategic Framework 2022-2031, and other FAO strategies that have been developed since then. The Strategy was elaborated following an inclusive process of consultation with FAO Members, FAO staff from headquarters and decentralized offices, as well as external partners. It articulates FAO's vision for agrifood systems by 2050, around three main pillars of action: at global and regional level, at country level, and at local level. The Strategy also encourages key guiding principles for action, such as science and innovation, inclusiveness, partnerships, and access to finance.
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Book (stand-alone)Technical bookThe future of food and agriculture - Trends and challenges 2017
Also available in:
No results found.What will be needed to realize the vision of a world free from hunger and malnutrition? After shedding light on the nature of the challenges that agriculture and food systems are facing now and throughout the 21st century, the study provides insights into what is at stake and what needs to be done. “Business as usual” is not an option. Major transformations in agricultural systems, rural economies, and natural resources management are necessary. The present study was undertaken for the quadrennial review of FAO’s strategic framework and for the preparation of the Organization Medium-Term plan 2018-2021.