近自然经营对辽东栎林优势乔木更新的影响

doi:10.11707/j.1001-7488.20130803

Abstract

Abstract:

This study was conducted in Quercus wutaishanica forests in Huanglong mountains with two close-to-nature management measures of self-regeneration after thinning 13.4% (light thinning) and planting Pinus tabulaefomis saplings after thinning 30% (heavy thinning), as well as un-thinned control. Effects of different thinning intensities on the site conditions, species diversity and dominant tree species regeneration were investigated. The results showed that: after close-to-nature thinning, the available nutrients increased, especially the total nitrogen. The species diversity indices were higher in thinned forests than in the un-thinned forests. With the increase of thinning intensity, the amount of seedlings and saplings of the dominant arbors (e.g., Q. wutaishanica, P. tabulaeformis, Acer ginnala) became greater. Compared with the control, the survival rate of the seedlings and saplings in thinned plots increased, and so did the current annual increment of height. In Huanglong Mountains, P. tabuliformis needs artificial measures for its regeneration, but Q. wutaishanica and A. ginnala can successfully self-regenerate. Close-to-nature thinning could improve the site conditions in Q. wutaishanica secondary forests and promote regeneration of the dominant tree species. Plantation of P. tabulaefomis saplings after thinning 30% of Q. wutaishanica stand was more suitable to the management of Q. wutaishanica secondary forest.

Key words: close-to-natural forest management, thinning, Quercus wutaishanica forest, regeneration

CLC Number:

S718.54

Zhou Jianyun, Li Rong, He Jingfeng, Zhang Wenhui. Regeneration of the Dominant Arbors after Close-to-Natural Management of Quercus wutaishanica Forest[J]. Scientia Silvae Sinicae, 2013, 49(8): 15-20.

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Regeneration of the Dominant Arbors after Close-to-Natural Management of Quercus wutaishanica Forest

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