Nine-year seed rain dynamics in Parashorea chinensis forest in Xishuangbanna, Southwest China

DOU Lina1,2 ZHANG Wenfu DENG Xiaobao CAO Min TANG Yong1

(1.CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, Yunnan 666303)
(2.University of Chinese Academy of Sciences, Beijing 100049)

【Abstract】Seed rain patterns have crucial influence on plant regeneration. Although it is very challenging to understand the dynamics of seed rain, long-term monitoring of seeds can provide useful insights. In this study, we monitored seed rain patterns of forests dominated by Parashorea chinensis in Xishuangbanna, Southwest China for nine years. We recorded 8,993,224 seeds belonging to 226 species, between May 2008 and April 2017. We categorized the seeds of 77 species as large, 61 species as medium, 72 species as small, 13 species as tiny, 1 species as infinitesimally grainy seed and 2 species as filamentous. More than 70% of all seeds belonged to the top 10 dominant species. The seeds of all types showed pronounced inter-annual variation for both seed number and species number. At least one mast seeding was observed for each of the seed type during nine years.

【Keywords】 tropical forest; seed rain; species composition; inter-annual variation; mast seeding;

【DOI】

【Funds】 National Special Science Research Program of China (2014CB954100) Special Program of One-Three-Five Strategic Planning of Chinese Academy of Sciences (2012XTBG-T01)

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    Footnote

    [1]. (1) Li XL (2009) Seed rain of the dominant tree species and tree seedlings dynamics in Parashorea chinensis forest in Xishuangbanna, Southwest China. Master’s thesis, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences. Mengla, Yunnan (in Chinese with English abstract). [^Back]

    [2]. (1) Li DX (2014) Study on seed rain and seedlings dynamic recruitment in Nonggang Northern Tropical Karst Seasonal Rain Forest. Master’s thesis, Guangxi Normal University, Nanning (in Chinese with English abstract). [^Back]

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This Article

ISSN:1005-0094

CN: 11-3247/Q

Vol 26, No. 09, Pages 919-930

September 2018

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Article Outline

Abstract

  • 1 Materials and methods
  • 2 Results
  • 3 Discussion
  • Footnote

    References