Translate the following English sentence to French:
"An important element of LIFE-Nature, which mainly concerns the realisation of the Natura 2000 network, is the introduction of a multinational approach to formulating plans for international projects and activities, so as to avoid the fragmentation of biotopes and to offer better protection of biodiversity."
Dans la thématique LIFE­Nature, qui vise principalement à mettre en place le réseau Natura 2000, il est important d' introduire l' approche multinationale dans l' élaboration d' actions et projets internationaux en vue d' éviter le fractionnement des biotopes et de renforcer la protection de la biodiversité.