Meeting symbol/code: GSPPA: II/2014/5
Session: Sess. 2

Les évaluations des bilans en éléments nutritifs aident à déterminer les effets des pratiques agricoles sur la fertilité des sols. Selon les situations, plusieurs approches et méthodes ont été utilisées. Ce bulletin présente un apercu de la situation actuelle des études des bilans en elements nutritifs. Il fait apparaître l'évolution des différentes approches et méthodes, les compare et souligne les améliorations effectuées ainsi que les questions qui restent à résoudre.

The purpose of this publication is to show how conservation agriculture can increase crop production while reducing erosion and reversing soil fertility decline, improving rural livelihoods and restoring the environment in developing countries. Soil organic matter and biological activity in the rooting zone, stimulated by continual additions of fresh organic material (crop residues and cover crops) are the basis of conservation agriculture, as described in the first chapter.

This publication will present efforts by FAO and partners on mapping the intervention area of the Great Green Wall initiative and restoration opportunities based on data gathered through Collect Earth and in support of presenting FAO's effort at COP22 in Marrakech on 14 November 2016.

African agrifood systems are being transformed by multinational capital. To date, research on this transformation has focused most intently on the rise of supermarkets and demand for African land. Multinational investment in African grain trading has received less attention. Using a range of qualitative methods and representative household survey data from Zambia, this article seeks to understand the causes and consequences of multinational investment in smallholder grain markets.

Los programas de atención a la reducción de emisiones provenientes de la deforestación o degradación de los ecosistemas, como es el caso de REDD+ y otros programas de incentivos forestales como son los pagos por servicios ambientales (PSA), podrían constituir una oportunidad para el fortalecimiento de los procesos de conservación, aprovechamiento sustentable y reducción de la pobreza en la región mesoamericana, y en particular en los territorios y comunidades indígenas.

In the course of the present century, the world population has increased from less than two thousand million to over five and a half thousand million. Until one hundred years ago, the expanding population's increasing needs for food, fuel, fibre and construction materials were met from the land by cultivating progressively larger areas. In the course of the next twenty-five years a further two thousand million people will be added to the global population. Most of these people will live in the tropics.