The major factors to affect windthrow contain the biologic mechanical attribute of tree, the mutual action of soil and base, disturbance of wind and so on.

影响风倒的主要因素包括林木的生物力学特性、根系与土壤的相互作用和风的扰动等。

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Mechanical mechanism of the windthrow of scale spruce in the northeast area have been opened out in the study, which combine mechanics with the biology properties in tree.

本课题将力学原理与生物体的生物性能结合起来，揭示东北云杉风倒的力学机理。

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