They've tried to avoid this by doing the negotiations between the government and interest organizations from all sides. The most surprising part of all this is really that these organizations, which included the main agricultural lobby organizations and the main nature preservation organizations, managed to sit down together and come to an agreement. This agreement was then proposed to the parliament, which voted it through with a broad coalition from both sides. So, that should ideally make it somewhat resilient to changing governments. Of course, that's not a guarantee, but at least it should be more solid than most of these political agreements :)