For decades Norwegian climate policy has largely ignored the agricultural sector and focused on cost-effective emission reductions abroad. Yet in June 2020, Norway decided to ban the cultivation of peatlands to protect critical carbon sinks, and the issue became ‘high politics’. We explain this radical policy change by combining an adapted version of the Multiple Streams framework with the Punctuated Equilibrium model of agenda-setting. We argue that the two models combined can provide a holistic explanatory framework, albeit with two revisions. Firstly, the window of opportunity or punctuation was in our case of a longer duration than both models anticipate. Secondly, we find that multiple complete couplings can take place within the opening of a policy (or more specifically, a decision) window. Both findings can be explained by party competition, thus underlining the need to revise agenda-setting models to better account for party politics.

几十年来，挪威的气候政策在很大程度上忽视了农业部门，并专注于国外具有成本效益的减排。然而，在 2020 年 6 月，挪威决定禁止种植泥炭地以保护重要的碳汇，这个问题变成了“高度政治”。我们通过将多流框架的改编版本与议程设置的标点均衡模型相结合来解释这一激进的政策变化。我们认为，这两个模型结合起来可以提供一个整体的解释框架，尽管有两个修订。首先，在我们的案例中，机会窗口或标点符号的持续时间比两个模型预期的要长。其次，我们发现在一个策略（或更具体地，一个决策）窗口的打开内可以发生多个完整的耦合。这两个发现都可以用政党竞争来解释，