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.

Situated at the headwaters of the Yellow River, the sedge-dominated peatlands in the Ruoergai plateau in China, store water and supply it to downstream areas. These peatlands also support endemic and endangered Himalayan species and maintain the special aspects of Tibetan culture. In the 1960-70’s, the Ruoergai peatlands, which had been drained for agriculture, began to be badly damaged by overgrazing. Assessments and field observations indicate that over 70 percent of the peatlands are severely degraded.

Meeting Name: African Forestry and Wildlife Commission
Meeting symbol/code: FO:AFWC/2016/4.2
Session: Sess. 20

Meeting Name: African Forestry and Wildlife Commission
Meeting symbol/code: FO:AFWC/2016/4.1
Session: Sess. 20

Meeting Name: FAO Committee on Forestry
Meeting symbol/code: COFO/2016/5.1
Session: Sess. 23

Meeting Name: Near East Forestry and Range Commission (NEFRC)
Meeting symbol/code: FO:NEFRC/2015/8
Session: Sess. 22

Meeting symbol/code: FO:LACFC/2015/7
Session: Sess. 29

Meeting Name: North American Forest Commission
Meeting symbol/code: FO:NAFC/2016/3.5
Session: Sess. 28

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.

Towards effective national forest funds addresses the need for more information on the way NFFs work and how best to establish and manage them. It shares the lessons that have emerged from the establishment and management of NFFs with the aim of supporting countries in designing and operating NFFs effectively according to their specific needs and circumstances. Based on a review of practical experiences, this publication outlines the general architecture and design elements of NFFs, as well as potential approaches and actions that could improve their performance.

Meeting symbol/code: FO:LACFC/2015/Inf.2
Session: Sess. 29

La présente note a été établie en vue de la sessio n plénière de la Semaine européenne des forêts intitulée «Les forêts et l’eau», qui se tiendra le jeudi 23 octobre 2008 1 . Elle a pour objet de promouvoir un débat nourri et éclairé en donnant au lecteur de s informations générales et en soulevant des questi ons que les participants à la session souhaiteront peut -être examiner au cours du débat.