Translate the following English sentence to French:
"Secondly, the scope of the directive must, in any event, be sufficiently broad and systematically include those plans which have a significant impact on the environment."
Deuxièmement, le champ d'application de la directive doit être, quel que soit le cas, suffisamment large et inclure systématiquement les plans qui ont un impact significatif sur l'environnement.