Global climate changes and local changes in cropping systems : cropping system calendar changes in Lorraine (F) due to climate changes
Résumé
The increasing of atmospheric greenhouse gas (GHG) concentration seems to be the most important cause of the origin of actual climate change. Crops phenology is driven by climate characteristic and since many years climatologists point out a general trend on temperature. We know that temperature increases may also have an impact on development of different crop (Alexandrov & Hoogenboom, 2000). What are the local effects on cropping systems of these global trends ? Our hypothesis is : cropping systems designed by farmers are influenced by these trends, and agronomists have study the multiple adaptations managed by farmers (Seguin, 2003). This study was conducted to determine whether the cereal crop cycles are modified by French farmers and experimental managers according to general climate change trends.