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首页> 外文期刊>Ecological research >Effects of denudation and burial on growth and reproduction of Artemisia ordosica in Mu Us sandland
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Effects of denudation and burial on growth and reproduction of Artemisia ordosica in Mu Us sandland

机译：剥落和埋葬对毛乌素沙地油蒿生长和繁殖的影响

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摘要

Plants in a dune environment have a high risk of being denudated by wind or buried by sand. We conducted a field experiment to assess growth and reproductive performance as well as biomass allocation of Artemisia ordosica after denudation and burial. Height growth decreased after denudation, but remained constant after burial; biomass was reduced by severe burial, but not by moderate ones. Vegetative growth measured by current-year generated vegetative branches declined with increasing severity of burial. Reproductive maturity was not affected by either denudation or burial, and reproduction decreased only after severe denudation. After denudation, biomass allocated to reproduction was greatly reduced, as shown by strongly reduced biomass allocation to fruits and whole reproductive branches, but that allocated to current-year vegetative growth was maintained. Biomass allocation to reproduction and vegetative growth remained rather stable after burial. Current-year reproductive-to-vegetative-biomass ratio was lower after denudation than after burial, indicating that vegetative growth was more favored by A. ordosicarnafter denudation. These modifications are adaptive in the fluctuating environment of mobile sand dunes where denudation and burial frequently occur.
机译：沙丘环境中的植物很容易被风剥蚀或被沙子掩埋。我们进行了田间试验，以评估裸露和埋葬后蒿的生长和生殖性能以及生物量的分配。剥蚀后，身高增长下降，但在埋葬后保持不变；严重的埋葬减少了生物量，但中等的埋葬却没有减少。随着埋葬严重程度的提高，以当年产生的营养分支衡量的营养生长下降。生殖成熟不受裸露或埋葬的影响，并且仅在严重裸露后繁殖下降。剥蚀后，分配给繁殖的生物量大大减少，这表现为水果和整个生殖分支的生物量分配大大减少，但维持了当年营养生长的分配量。埋葬后，生物量对繁殖和营养生长的分配保持稳定。剥蚀之后，当年的繁殖/营养生物量比埋葬后要低。这表明，去壳后的A. ordosicarnarn更有利于营养生长。这些修改适用于经常发生剥蚀和掩埋的流动沙丘的波动环境。

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  • 来源
    《Ecological research》 |2010年第3期|P.655-661|共7页
  • 作者

    Shou-Li Li; Pieter A. Zuidema; Fei-Hai Yu; Marinus J. A. Werger; Ming Dong;

  • 作者单位

    State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China Ecology and Biodiversity Group, Institute of Environmental Biology, Utrecht University, PO Box 80084, 3508 TB Utrecht, The Netherlands Graduate University of Chinese Academy of Sciences, Beijing 100049, China;

    rnEcology and Biodiversity Group, Institute of Environmental Biology, Utrecht University, PO Box 80084, 3508 TB Utrecht, The Netherlands;

    rnState Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China College of Nature Conservation, Beijing Forestry University, Beijing 100083, China;

    rnEcology and Biodiversity Group, Institute of Environmental Biology, Utrecht University, PO Box 80084, 3508 TB Utrecht, The Netherlands;

    rnState Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China College of Nature Conservation, Beijing Forestry University, Beijing 100083, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    artemisia ordosica; dune habitats; erosion; reproduction; sand burial;

    机译：紫蒿沙丘栖息地;侵蚀;再生产;沙埋;

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