Related items
Showing items related by metadata.
-
DocumentOther documentGrowth performance of the Teak's (Tectona grandis Linn.f) different planting stocks
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.The growth of plantation is dependent on a complex series of interactions between genetics and environmental factors, and the planting stocks including planting methods. For the successful establishment of a plantation, the economically effective means should be explored, as teak plantation is being established in Myanmar especially for commercial purposes including forest rehabilitation purposes. This study was conducted in the 12 years old Teak plantation that was established in compartment No. 24 of Ngalaik Reserved Forest and managed by Forest Research Institute. This plantation was established with different planting stocks; tissue culture seedling, shoot cutting seedling, potted seedling, fresh stump seedling, and grafted seedling in 2008. The main objective of this trial is to explore the growth performance of Teak plantation by applying the different planting stocks. Randomized completely block design (RCBD) was used with 5 replications (5 blocks). In one block, there are 5 plots in which totally of 49 trees were planted in each sub-plot with 2.7 m by 2.7 m spacing. There was a total of 1,225 planted trees in this trial. As a preliminary step, in 2019 through the measurement data, the total basal area of trial area (0.92 ha) is 16.46 m2 (17.89 m2 ha-1), the total volume is 96.47 m3 (104.86 m3 ha-1) [here calculated cone factor = 0.359822 is used], and mean annual increment (MAI) is 9.53 m3 ha-1 yr -1. Among the different planting stocks, the potted seedling plant was significantly better in growth as compared to those of other planting stocks, nonetheless, survival percentages among them were not significant. Now, we conduct this follow-up study to explore the growth performance of this 12 years old teak plantation of different planting stocks. We expect this study’s findings will be supported the useful and applicable information for the commercial plantation program to raising environmentally friendly and economically successful teak plantations. Keywords: Sustainable forest management, Deforestation and forest degradation, Research ID: 3485372 -
ArticleJournal articleCharacteristics and dynamics of arbuscular mycorrhizal fungal communities along a chronosequence of teak (Tectona grandis) plantations in Mt. Jianfengling, Hainan Island, China
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Teak (Tectona grandis L.f.) is one of the most promising timber species in the tropical and subtropical areas in south China. Arbuscular mycorrhizal (AM) fungi play a crucial role in promoting plant growth, enhancing plant stress resistance and sustaining healthy ecosystem. However, little is known about mycorrhizal status in teak plantations. This study aims to characterize the dynamics of AM fungal communities in the rhizosphere of teak plantations at different ages. Fine roots and rhizosphere soils in teak plantations at varying ages (22, 35, 45 and 55 years old), and the adjacent native grassland without teak plantation (CK) were assessed for soil properties, and AM fungal communities using amplicon sequencing technology. With the increase of stand ages, catalase and ammonium nitrogen in the rhizosphere soil were also increased; soil organic carbon, total phosphorous (P), acid phosphatase, available potassium (AK) and available phosphorus (AP) were first increased and then declined at 55-year-old stand. In total, 12 and 9 AM fungal genera were detected in the rhizosphere soil and in teak root samples, respectively. The OTUs data revealed that AM fungi presented in the rhizosphere soil and roots were mostly belonged to Glomus. In the rhizosphere soil, the relative abundance of Glomus was first increased and then declined, while Gigaspora and Scutellospora were declined, although the diversity and richness of AM fungi showed no significant variation with stand ages. In roots, the composition of AM fungal community and its diversity did not change with stand ages, whereas the richness was increased with the stand age. The monte carlo permutation test indicated that AK, nitrate nitrogen and C/P ratio largely explained the shift in the composition of AM fungal community in the rhizosphere soil. The results demonstrated that AM fungal communities in the rhizosphere soil and teak roots shifted across plantation ages. These changes were largely attributed to the age-induced variation in soil properties. Keywords: Tectona grandis; arbuscular mycorrhizal fungi; stand age; soil properties; plantations ID: 3623633 -
ArticleJournal articleCurrent situation and solutions for community forest management in the Central Highlands of Viet Nam
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Community forest management has been officially recognized more clearly in Viet Nam's new Forest Law of 2017, so to promote community forest management, it is necessary to assess the past process and put it into new context to provide appropriate technical and policy recommendations. The fields of community forest management assessment were in Tul and Hang Nam villages, where M'Nong indigenous ethnic minorities live, in the Central Highlands, Viet Nam. Natural forests were allocated to these communities since 2002. Accordingly, Tul community had the support of a rural development project in the period of 2005-2009 to improve its capacity for management of community forests, while the Hang Nam community did not have any significant support from outside. Participatory research methods were applied to evaluate the results and effectiveness of community forest management. The results showed that: 1) The community forest model that was granted forest use rights without any support and advice to implement community forest management (In the case of Hang Nam community), achieved the rates according to the following: organizing 13%, technical 23%, economic 33%, social: 34% and environmental: 71% and on average 35% of all objectives were met; 2) The community forest model that was granted the forest use rights and received the supports for capacity building through a 4-year project (In the case of Tul community), achieved the rates according to the following: organizing 33%; technical 36%, economic 20%, social: 77% and environmental: 77% and on average 50% of all objectives were met. In order to consolidate and develop community forest management, it is necessary to synchronously implement the following solutions: 1) Strengthen the organization and management capacity for the communities; 2) Improve community livelihoods from forest management; 3) There is a need of more appropriate policies for community forest management; 4) Apply measures to rehabilitate degraded forests. Keywords: community forestry, evaluation of forest management, solutions for community forestry ID: 3472958
Users also downloaded
Showing related downloaded files
-
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.
-
BookletCorporate general interestEmissions due to agriculture
Global, regional and country trends 2000–2018
2021Also available in:
No results found.The FAOSTAT emissions database is composed of several data domains covering the categories of the IPCC Agriculture, Forestry and Other Land Use (AFOLU) sector of the national GHG inventory. Energy use in agriculture is additionally included as relevant to emissions from agriculture as an economic production sector under the ISIC A statistical classification, though recognizing that, in terms of IPCC, they are instead part of the Energy sector of the national GHG inventory. FAO emissions estimates are available over the period 1961–2018 for agriculture production processes from crop and livestock activities. Land use emissions and removals are generally available only for the period 1990–2019. This analytical brief focuses on overall trends over the period 2000–2018.