Meadows in montane forests have emerged as a global study system for the accelerating phenomenon of woody encroachment, particularly in the highly productive temperate rainforests of the Pacific Northwest. Study of woody encroachment into meadows in western Oregon, however, has been conducted almost entirely in the western and High Cascades, with only two extant observational studies of grassy balds in the Coast Range. This study evaluates evidence for factors limiting woody encroachment into meadows in the Oregon Coast Range, including bottom‐up control by soil properties, plant–plant interactions and top‐down control by large herbivores.

中文翻译：

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自上而下和自下而上的控制措施限制了木本植物入侵到持续的温带雨林草甸

山地森林中的草地已经成为全球研究系统，用于加剧木本植物入侵的现象，特别是在西北太平洋高产温带雨林中。但是，在俄勒冈州西部，几乎完全在西部和高叶栅上进行了对木本植物侵占草甸的研究，仅对海岸山脉的草皮秃头进行了两项现存的观测研究。这项研究评估了限制俄勒冈州海岸范围内的树木入侵森林的因素的证据，包括土壤性质的自下而上控制，植物与植物的相互作用以及大型草食动物自上而下的控制。