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Cf 19.6 million additional metric tons of plant nutrients, 17-9 million tons were used in the more advanced regions and only 1.6 million tons in less developed regions. (...) SU(;%Mtte^« aost African countries meanS aurn, Pwt of potentlally agricultoal land is ouiti d< as the nuaoer of peopXe i. staall tMs amount Qf food, tut if thedenaity of ^^^J^ e required food ^ * ; trtimesufficient +^ thereis not enough tim9 to restore 2 :;ou: rplant nutrients in theof plant nutrients ,„, of vegetable ^^ forest vegetation after vaxiou3 periods „ Plant nutrientB and secondary fnrsst vegetation Nutrients Production of . .1 + JC «?...:-l o. nutrients really for e/cn.14/271 Page. 22 plants are smaller, because when the vegetation is removed by clearing and burning?

ST/SG/AC.10/C.3/2006/90 page 4 Annexe 1 Annexe 1 (anglais seulement) Importance of ammonium nitrate based fertilizers with less than 80 % ammonium nitrate mixed with calcium sulphate Nitrogen (N) and Sulphur (S) are essential plant nutrients which play a vital role in protein formation. (...) During the growth period, the continuous availability of both nutrients according to plant needs is important because: ST/SG/AC.10/C.3/2006/90 page 5 Annexe 1 a. (...) In addition, applying a calcium based fertilizer adds an important additional plant nutrient; Ca being one of the essential secondary elements for plant growth.

ECE/EB.AIR/WG.5/2016/2 GE.16-17013 7 f) Contribution à des activités comme l’évaluation de l’azote à l’échelle européenne, le rapport « Our Nutrient World »2, et le projet du FEM relatif à des recherches ciblées visant à mieux comprendre le cycle global de l’azote, en vue de mettre en place un système international de gestion de l’azote (projet de système international de gestion de l’azote). 13. (...) Sutton et al., éd. Our Nutrient World: The challenge to produce more food and energy with less pollution, Global Overview of Nutrient Management (Édimbourg, Royaume-Uni, Centre d’écologie et d’hydrologie, 2013). Disponible à l’adresse : http://nutrientchallenge.org/document/our-nutrient- world. 3 Henk Westhoek et al., Nitrogen on the Table: The influence of food choices on nitrogen emissions and the European environment, Special Report of the European Nitrogen Assessment (Édimbourg, Royaume-Uni, Centre d’écologie et d’hydrologie, 2015).

L’Équipe spéciale a pris note de la contribution apportée par le rapport «Our Nutrient World1» de 2013, établi par le Partenariat mondial pour la gestion des nutriments en collaboration avec l’Initiative internationale sur l’azote et sous la direction de M. (...) Zhang Y.) (2013) Our Nutrient World: The challenge to produce more food and energy with less pollution. Global Overview of Nutrient Management. Publié par le Centre d’écologie et d’hydrologie (Édimbourg) pour le compte du Partenariat mondial pour la gestion des nutriments et de l’Initiative internationale sur l’azote. 114 p. http://initrogen.org/sites/default/files/documents/ files/ONW.pdf/).

In the target areas, the relationship between natural resources and sustainability returns to the digestible nutrients in plants. The amount of digestible nutrients which can be consumed (grazing capacity) depends upon vegetation types, species composition, the current amount of nutrients and productivity. (...) More concretely, apart from such direct consequences of human interference as cattle grazing, reduced productivity and the diminished luxuriance of species composition/vegetation types, indirect influences are being strongly felt, in terms of physio-chemical changes in soil (soil nutrient degradation, salinization), physical changes (aggregate formation restriction, crust, compaction) and soil erosion. (...) Under the environments, where weather condition (radiation ICCD/COP(7)/CST/7 page 11 intensity, air temperature and humidity) and soil condition (particle size distribution, moisture and nutrient) will be controlled so that the environment in the target area is simulated in the laboratory, the activity of the plant physiology, such as transpiration rate and photosynthesis rate, of the major indicator plant species (e.g.

Provision of ecosystem services: Forests and trees directly support food production at farm, landscape and broader levels by delivering numerous non-provisioning ecosystem services that are essential for FSN and sustainable development in the long term (such as water regulation, soil protection, nutrient circulation, pest control and pollination). (...) Production systems that integrate forests, trees and crops need to explicitly take into account potential competition for nutrients, water and light. 14. Human health and well-being: Forests, tree-based agricultural systems and forestry impact human health in a diversity of ways, including: provisioning of food, medicinal plants, fuelwood, clean water and income. (...) ECE/TIM/2017/19 FO:EFC/2017/19 10 GE.17-11785 (e) Strengthen FAO INFOODS studies on the nutrient composition of wild foods. 2. Enhance the role of forests in environmental processes at all scales without compromising the right to adequate food of forest-dependent people 34.

Le Groupe d’experts préparait un numéro spécial intitulé « Managing nutrients: the key to achieve sustainable food systems for healthy diets » (La gestion des nutriments, passage obligé pour parvenir à des systèmes alimentaires durables et une alimentation saine), à paraître dans la revue « Global Food ECE/EB.AIR/WG.5/2019/2 GE.19-03209 5 Security ». (...) Le Groupe d’experts prépare un numéro spécial intitulé « Managing nutrients: the key to achieve sustainable food systems for healthy diets » (La gestion des nutriments, passage obligé pour parvenir à des systèmes alimentaires durables et une alimentation saine), à paraître dans la revue « Global Food Security ».

Sutton et autres, Our Nutrient World: The Challenge to Produce More Food and Energy with Less Pollution (Centre d’écologie et d’hydrologie, Édimbourg, au nom du Partenariat mondial sur la gestion des nutriments et de l’Initiative internationale pour l’azote, 2013).

A. Sutton et al., Our Nutrient World: The Challenge to Produce More Food and Energy with Less Pollution (Centre d’écologie et d’hydrologie, Édimbourg, au nom du Partenariat mondial sur la gestion des nutriments et de l’Initiative internationale pour l’azote, 2013).