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Book (stand-alone)Indicators of the genetic diversity of trees – State, pressure, benefit and response
The State of the World’s Forest Genetic Resources – Thematic study
2020Also available in:
No results found.This study, prepared within the ambit of The State of the World’s Forest Genetic Resources, reviews issues related to the development of indicators for tree genetic diversity. It includes a historical account of the development of science-based indicators for tree genetic diversity that embrace ecological surrogates for genetic diversity, the genealogical approach, genetic monitoring of management units, the use of molecular markers, as well as relevant experience from other organisms and policy processes. It also includes a section on relevant data, data sources, and databases. Finally, the study proposes a set of four operational indicators for monitoring tree genetic diversity. The proposed indicators could support efforts towards sustainable forest management, as well as the development of indicators for the post-2020 global biodiversity framework. -
Book (series)Forests and trees supporting rural livelihoods 2017
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No results found.In Myanmar and Vietnam the political framework is conducive to support the allocation of forests to farm communities and private households, to facilitate community and farm forestry and to support the establishment of community forestry user groups and enterprises. The main crops planted in both countries are rice and maize. In Myanmar most crops are used for subsistence purposes, in particular in Chin State. In Vietnam about two thirds of the planted crops are sold in the market. In the provi nces included in the survey the agricultural area available for each person in Myanmar was found to be four times larger than in Vietnam, while the forest area per person was four times smaller. Accordingly, the results of the survey suggest that, in Myanmar, more than half of the peoples’ income originates from agriculture, whereas forestry supplies only 8% of the total family income. Forests and trees have a higher significance for rural livelihoods in Vietnam, where the bigger part of the fam ily income originates from forestry while agriculture only supplies less than one third. In Myanmar rural communities plant trees on both the communal and individually owned forest land. The most preferred species for planting are hardwoods, namely Teak (Tectona grandis) and Pyinkado (Xylia xylocarpa), as well as some eucalypts (Eucalyptus spp.). Some communities also plant other fast growing species (Gmelina, Acacia, Cassia). In Vietnam many communities possess individual land use rights for fo rests besides some communal woodlots. Farmers plant mainly fast-growing species (Acacia spp, Magnolia conifera, Bamboo, Melia azedarach, Chukrasia tabularis) and some trees that produce non-wood forest products (star anise, canarium nuts, cinnamon, styrax resin). -
DocumentForest biological diversity 2002Is a forest with 1 000 species better, and managed better, than a forest with 500 species? This issue of Unasylva looks at issues related to forest biological diversity and its conservation and sustainable use. One of the key messages is that numbers are not the only issue.
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