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Survival and growth of Interior spruce in Britain

机译：英国内部云杉的存活率和生长

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摘要

Interior spruce is the name given to white spruce (Picea glauca (Moench) Voss), Englemann spruce (Picea engelmannii (Parry) Engelm.) and the hybrids of the two species, growing in the Pacific Northwest. A series of experiments was planted in 1985 to examine the potential of Interior spruce as a possible alternative to Sitka spruce (Picea sitchensis (Bong.) Carr.). Recent interest in species options in British forestry, motivated by the policy of building resilience in planted forests, has led Forest Research to examine some of its long-term experiments. Twelve seed origins of Interior spruce were planted in randomised block experiments at four sites in Scotland and one in England. At each of the Scottish sites growth was compared with Sitka spruce, in England the control species was Norway spruce (Picea abies (L.) Karst). Analysis of early results for survival and growth after 30 years shows that Interior spruce can survive well but growth is modest; in terms of volume production the control species were at least five times more productive. This probably rules out Interior spruce as an option in situations where timber production is an important objective.
机译：内部云杉是白色云杉（Picea Glauca（Moench）Voss），Englemann Spruce（Picea Engelmannii（Parry）Engelm）和两种物种的杂种，在太平洋西北生长。 1985年种植了一系列实验，以检查内部云杉的潜力作为Sitka Spruce的可能替代品（Picea Sitchensis（Bong。）Carr。）。最近在英国林业中的物种选择的兴趣，受到植物森林建筑恢复力的政策的推动，引领了森林研究，以研究其一些长期实验。在苏格兰的四个地点和英格兰的四个地点种植了内部云杉的十二种子起源。在每个苏格兰地点的增长与西卡云杉比较，在英格兰，控制物种是挪威云杉（Picea Andies（L.）喀斯特）。 30年后存活率和生长的早期结果分析表明内部云杉可以良好地生存，但增长是适度的;在产量生产方面，对照物种的生产率至少为5倍。这可能是在木材生产是一个重要目标的情况下作为一种选择的内部云杉。

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