Home > Archive>Volume 20, Issue 5, 2012 >506-512. DOI:10.3969/j.issn.1005-3395.2012.05.012
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Studies on the Seeds Dispersal and Seedlings Regeneration in Gaps and Understory of Castanopsis kawakamii Natural Forest
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College of Forestry，Fujian Agriculture and Forestry University,College of Forestry，Fujian Agriculture and Forestry University,College of Forestry，Fujian Agriculture and Forestry University,College of Forestry，Fujian Agriculture and Forestry University,College of Forestry，Fujian Agriculture and Forestry University,College of Life Science，Fujian Agriculture and Forestry University,College of Forestry，Fujian Agriculture and Forestry University,College of Forestry，Fujian Agriculture and Forestry University

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    Abstract:

    Seed rain and seed bank distribution and seedlings regeneration status in forest gaps and understory of Castanopsis kawakamii natural forest were studied in Fujian Province. The results showed that the amount of total seeds and intact seeds in forest gaps were higher than those in understory, whereas immature seed rate in gaps was lower than that in understory. The falling seed rain at peak stage accounted for 77.13% and 74.5% of total seeds in forest gaps and understory, respectively. Seed reserve in forest gaps was lower than that in understory, which the most in seed bank were totally eaten by animals or picked up seeds in soil seed bank. The seed vertical distribution in soil seed bank was in order as litter layer (about 2/3) > humus layer (about 1/3) > subsoil layer (less than 1%), which dominated by C. kawakamii seeds. The convention rates from seed to seedlings were low in forest gaps and understory. The densities of intact seed and seedlings of C. kawakamii in forest gaps were higher than those in understory. It suggested that the microhabitat of forest gap improved the density and proportion of mature seeds in seeds dispersal and seedlings regenerated. Therefore, forest gaps play important roles in restoration of C. kawakamii population.

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何中声,刘金福,郑世群,苏松锦,洪伟,吴则焰,徐道炜,吴承祯.格氏栲天然林林窗和林下种子散布及幼苗更新研究[J].热带亚热带植物学报,2012,20(5):506~512

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History
  • Received:December 14,2011
  • Revised:March 15,2012
  • Adopted:April 05,2012
  • Online: September 26,2012
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