Pine resin is a highly valuable and sought-after non-timber forest product with multiple uses in many industrial sectors. Maritime pine (Pinus pinaster Ait.) is the main tapped species in Europe, where resin tapping activities are concentrated in only a few specific Mediterranean regions. Although maritime pine also occupies vast extensions under Atlantic climates, the resin tapping potential of these forests remains unexplored. The objectives of this study were to determine the main factors driving resin yield under Atlantic conditions and to adapt extraction practices to these regions. Resin yield was assessed in two naturally regenerated maritime pine forests in NW Spain. The effects of tree age, inter-tree competition, dendrometry, seasonality and wounding time on resin production were tested. The feasibility of a simple and rapid microtapping procedure to predict resin yield was also assessed. Tree age was identified as the main factor driving resin production, which increased considerably with tree age. Tree slenderness, tree size and inter-tree competition also significantly influenced resin production, although the effects were lower and likely mediated by age variation. Resin yield followed marked seasonal patterns, with maximum production in late summer and minimum production in winter. Resin flow decreased rapidly with time after wounding. More than 95 % of resin yield flowed in the first week after trees were wounded. The proposed microtapping procedure, which estimates resin flow from small wounds in just a few days, was shown to be a useful and reliable tool both for phenotyping and to predict resin yield in new stands. The results confirm the high potential for resin tapping in Atlantic maritime pine forests, although tapping should be restricted to stands older than 30 years and a season should be delimited for this activity in the region studied. Additionally, the periodicity of grooves (typically fortnightly) may need to be increased.

松脂是一种非常有价值且广受欢迎的非木材林产品，在许多工业领域都有多种用途。海上松（Pinus pinaster（Ait。）是欧洲主要的apped窃物种，其树脂窃听活动仅集中在少数几个特定的​​地中海地区。尽管海洋松在大西洋气候下也占了很大的范围，但这些森林的树脂挖掘潜力仍未得到开发。这项研究的目的是确定在大西洋条件下驱动树脂产量的主要因素，并使提取方法适应这些地区。在西班牙西北部的两个天然再生海洋松树林中评估了树脂产量。测试了树木年龄，树木间竞争，树木密度，季节和伤口时间对树脂产量的影响。还评估了一种简单快速的微敲击程序来预测树脂收率的可行性。树龄被确定为驱动树脂生产的主要因素，随着树龄的增长而大大增加。树木的细长度，树木的大小和树木间的竞争也显着影响了树脂的产量，尽管这种影响较低，并且很可能受年龄变化的影响。树脂产量遵循明显的季节性模式，夏末最高产量，冬季最低产量。伤口愈合后，树脂流动随时间迅速减少。树木受伤后的第一周，有超过95％的树脂产量流过。拟议的微攻丝程序可以在短短几天内估算出小伤口的树脂流动，它被证明是用于表型分析和预测新机架中树脂产量的有用且可靠的工具。结果证实了在大西洋海洋松林中树脂挖掘的巨大潜力，尽管应将挖掘仅限于30岁以上的林分，并应在所研究的区域为此活动划定一个季节。另外，可能需要增加凹槽的周期（通常每两周一次）。