201 research outputs found
The ‘Missing Middle’: Landscape Restoration’s Greatest Challenge
The world urgently needs to restore huge swaths of land to meet the demand for ecosystem services and is targeting 350 M Ha by 2030 under the New York Declaration on Forests and the Bonn Challenge. Tremendous resources - financial, human and other - are needed at international, national, sub-national and local levels. International mobilization has been great so far. National awareness and commitments are also robust. Many excellent local success stories have also been reported. However, for scaling up and implementing restoration, a critical mass of involvement of sub-national governments, local NGOs, CBOs, academia, and enterprise is needed. So far, evidence of engagement of this key cohort is thin, and this missing meso level engagement may well be restoration’s number one challenge. This is what this policy brief seeks to address
Food for thought: The underutilized potential of tropical tree-sources foods for 21st century sustainable food systems
1. The global food system is causing large-scale environmental degradation and is
a major contributor to climate change. Its low diversity and failure to produce
enough fruits and vegetables is contributing to a global health crisis.
2. The extraordinary diversity of tropical tree species is increasingly recognized to be
vital to planetary health and especially important for supporting climate change
mitigation. However, they are poorly integrated into food systems. Tropical tree
diversity offers the potential for sustainable production of many foods, providing
livelihood benefits and multiple ecosystem services including improved human
nutrition.
3. First, we present an overview of these environmental, nutritional and livelihood
benefits and show that tree-sourced foods provide important contributions to
critical fruit and micronutrient (vitamin A and C) intake in rural populations based
on data from sites in seven countries.
4. Then, we discuss several risks and limitations that must be taken into account
when scaling-up tropical tree-based food production, including the importance
of production system diversity and risks associated with supply to the global
markets.
5. We conclude by discussing several interventions addressing technical, financial,
political and consumer behaviour barriers, with potential to increase the consumption and production of tropical tree-sourced foods, to catalyse a transition
towards more sustainable global food systems
Produção de biomassa e rendimento de óleo essencial de folhas, galhos finos e rebrotas utilizando poda da copa de Aniba canelilla (H.B.K.) (Lauraceae) na Amazônia Central
Aniba canelilla (H.B.K.) Mez. is a tree species from Amazon that produces essential oil. The oil extraction from its leaves and stems can be an alternative way to avoid the tree cutting for production of essential oil. The aim of this study was to analyse factors that may influence the essential oil production and the biomass of resprouts after pruning the leaves and stems of A. canelilla trees. The tree crowns were pruned in the wet season and after nine months the leaves and stems of the remaining crown and the resprouts were collected, in the dry season. The results showed that the essential oil yield and chemical composition differed among the stems, leaves and resprouts. The stems' essential oil production differed between the seasons and had a higher production in the resprouting stems than the old stems of the remaining crown. The production of essential oil and leaf biomass of resprouts were differently related to the canopy openness, indicating that light increases the production of the essential oil and decreases the biomass of resprouting leaves. This study revealed that plant organs differ in their essential oil production and that the canopy openness must be taken into account when pruning the A. canelilla tree crown in order to achieve higher oil productivity.Aniba canelilla (H.B.K.) Mez. é uma espécie arbórea da Amazônia que produz óleo essencial. A extração do óleo de suas folhas e galhos pode ser uma forma alternativa de evitar a derrubada do tronco para sua produção de óleo essencial. O objetivo deste estudo foi analisar os fatores que podem influenciar a produção de óleo essencial e sua biomassa da rebrota após a poda de folhas e galhos das árvores de A. canelilla. As copas das árvores foram podadas na estação chuvosa e, após nove meses, as folhas e os galhos da copa remanescente e da rebrota foram coletadas na estação seca. Os resultados mostraram que o rendimento e a composição química de óleo essencial diferiram entre os galhos finos, as folhas e as rebrotas. A produção de óleo essencial de galhos diferiu entre as estações e teve maior produção nos galhos da rebrota do que nos galhos velhos da copa remanescente. A produção de óleo essencial e de biomassa das folhas da rebrota foram diferentemente relacionadas com a abertura de dossel, indicando que a luz aumenta a produção de óleo essencial e diminui a de biomassa nas folhas da rebrota. Este estudo revelou que as diferenças entre os órgãos da planta na produção de óleo essencial e a abertura de dossel devem ser levadas em consideração para podar a copa da árvore da A. canelilla e alcançar maior produtividade de óleo
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