In Cambodia, the cost associated with land degradation is estimated at $700 million per year, threatening the country’s food and economic security. As part of a transdisciplinary approach, the Réa-Sol project proposes to co-construct WITH and FOR farmers, associations and scientists soil degradation risk indicators. These indicators will be established on the basis of scientific analyzes of the environment and discussions with farmers through participatory approaches and the use of digital applications. The Réa-Sol project will identify local empirical knowledge and sustainable and innovative farming practices associated with soil rehabilitation, its resilience to climate change, and the food and economic security of the most vulnerable populations. To meet this objective, this project is built around a collaboration between ITC and RUA researchers from the Ministries of Education (MoEYS) and Agriculture (MAFF), and their French partners from IRD, as well as collaborations with Cambodian (CADT, RUPP) and French (NGO AGRISUD International, and a French company, LISODE) partners.

Fertilité des sols, Agriculture

The general objective of the JEAI WORMAP “earthworm monitoring program in Vietnam” is to investigate the spatial distribution of earthworms in southern Vietnam and to evaluate their contribution to regulate soil water and soil carbon storage. The JEAI team includes Vietnamese scientists from the University of Can Tho, the Institute of Ecology and Biological Resources and Vietnam National University, who have the willingness to structure their research on earthworm diversity, ecology and soil functioning. The IRD research units of iEES-Paris and Eco&Sols will provide regular support to the JEAI team. The expected results include (i) enhanced knowledge on diversity, spatial distribution and ecology of earthworms which will enable the detection of biodiversity hot spots as well as areas subject to change, and the implementation of efficient ecosystem management and (ii) capacity building by training students and scientists in earthworm taxonomy, biogeography and soil ecology.

Agriculture, Earthworm

Initié et soutenu de 2013 à 2015 par l’IRD/AIRD au travers du projet PARRAF, le réseau CaSA est né d’une collaboration entre chercheurs africains et européens convaincus de la nécessité de considérer le carbone du sol. Aujourd’hui le réseau CaSA est animé principalement par 4 équipes de recherche du Sud et l’IRD, et est riche de 21 équipes de recherche sur 11 pays africains. L’objectif commun des membres du réseau est de contribuer à une meilleure prise en considération du carbone des sols pour une agriculture durable en Afrique. Ces chercheurs contribuent à comprendre, quantifier et modéliser le potentiel de séquestration de carbone dans les sols selon leurs usages, mais aussi à identifier et quantifier les compromis et synergies entre séquestration du carbone, sécurité alimentaire, maintien de la biodiversité selon les contextes pédo-climatiques.

Sols tropicaux, Séquestration du carbone, Climat, Biomasse, Agriculture