This paper argues that Sámi reindeer pastoralism in Sweden is highly stressed during the critical snow cover periods due to large-scale human interventions, especially forestry, and that these have over time significantly worsened the ecological conditions for natural grazing-based responses to changing snow conditions caused by climate change. Informed by a literature review, the paper conceptualises two, overlapping ecological dynamics that shape the availability of lichen as key forage resources within a Sámi pastoral landscape perspective: the grazing dynamics of reindeer during snow cover periods as determined by climatic stochasticity, and the more predictable vegetation dynamics of lichen habitat formation, growth and sustenance based on structured forestry practices. This could help articulate an intervention ecology that pursues sustainable ecological conditions for natural grazing-based Sámi reindeer pastoralism, along with other goals. As such alternatives are likely to face political resistance, the article discusses the implications of its findings within a science–politics interface.

本文认为，由于大规模的人类干预，尤其是林业，瑞典的萨米驯鹿放牧在关键的积雪时期受到高度压力，并且随着时间的推移，这些已经大大恶化了基于自然放牧的对不断变化的雪况的反应的生态条件气候变化引起的。根据文献综述，本文概念化了两个重叠的生态动力学，这些生态动力学塑造了萨米牧区景观视角下地衣作为主要草料资源的可用性：由气候随机性决定的积雪期间驯鹿的放牧动态，以及更可预测的基于结构化林业实践的地衣栖息地形成、生长和维持的植被动态。这可能有助于阐明一种干预生态学，为以自然放牧为基础的萨米驯鹿放牧业寻求可持续的生态条件，以及其他目标。由于此类替代方案可能会面临政治阻力，因此本文讨论了其发现在科学-政治界面中的含义。