Spake Rebecca, Barsoum Nadia, Newton Adrian C, Doncaster C Patrick
Centre for Biological Sciences, Institute for Life Sciences Building 85, University of Southampton, Southampton SO17 1BJ, UK.
Centre for Ecosystems, Society and Biosecurity, Forest Research, Alice Holt Lodge, Farnham, Surrey GU10 4LH, UK.
For Ecol Manage. 2016 Jan 1;359:300-308. doi: 10.1016/j.foreco.2015.10.008.
Functional diversity (FD) is increasingly used as a metric to evaluate the impact of forest management strategies on ecosystem functioning. Management interventions that aim to maximise FD require knowledge of multiple environmental drivers of FD, which have not been studied to date in temperate coniferous production forests. We quantified the relative importance of abiotic (forest management) and biotic (ground vegetation community) drivers of carabid FD and trait distribution in 44 coniferous plantation forest stands across the UK. Carabid FD declined with canopy cover and carabid body length correlated negatively with the percentage of open semi-natural area surrounding a plot. We conclude that forest management could enhance carabid FD through initiatives that emulate natural disturbance regimes through gap creation. We found that neither functional nor taxonomic metrics of vegetation diversity correlated with carabid FD, suggesting that restoration of plant communities, a major goal of forest restoration efforts, will not necessarily enhance carabid FD in coniferous plantations.
功能多样性（FD）越来越多地被用作一种指标，以评估森林管理策略对生态系统功能的影响。旨在使功能多样性最大化的管理干预措施需要了解功能多样性的多种环境驱动因素，而迄今为止在温带针叶人工林中尚未对这些因素进行研究。我们在英国各地的44个针叶人工林林分中，量化了步甲功能多样性和性状分布的非生物（森林管理）和生物（地面植被群落）驱动因素的相对重要性。步甲功能多样性随树冠覆盖度的增加而下降，步甲体长与样地周围开阔半自然区域的百分比呈负相关。我们得出结论，森林管理可以通过创造林窗模拟自然干扰状况的举措来提高步甲功能多样性。我们发现，植被多样性的功能指标和分类学指标均与步甲功能多样性无关，这表明作为森林恢复努力的一个主要目标，恢复植物群落不一定会提高针叶人工林中步甲的功能多样性。
