Questione giuridica chiave
Whether Pro Natura had standing to bring an abstract norm control challenge under Article 12 LPN
Decisione estratta
Article 12 LPN deliberately limits association standing to appeals against decisions; it does not extend to abstract review of cantonal norms.
Motivazione estratta
The legislative history shows the federal legislature intentionally confined the remedy to decisions and did not leave a gap to be filled by analogy.