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Experimental Evaluation of the Sustainability of Dwarf Bamboo (Pseudosasa usawai) Sprout-Harvesting Practices in Yangminshan National Park, Taiwan

机译:台湾阳明山国家公园矮竹萌芽实践可持续性的实验评价

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摘要

Sustainable harvest of natural products that meets the needs of local people has been viewed by many as an important means for sustaining conservation projects. Although plants often respond to tissue damage through compensatory growth, it may not secure long-term sustainability of the populations because many plants enhance individual well-being at the expense of propagation. Sustainability may further be threatened by infrequent, large-scale events, especially ill-documented ones. We studied the impacts of sprout harvesting on sprout growth in a dwarf bamboo (Pseudosasa usawai) population that has seemingly recovered from an infrequent, large-scale masting event. Experimental results suggest that although a single sprout harvest did not significantly alter the subsequent abundance and structure of sprouts, culm damage that accompanied sprout harvesting resulted in shorter, thinner, and fewer sprouts. Weaker recovery was found in windward, continually harvested, and more severely damaged sites. These findings suggest that sprout growth of damaged dwarf bamboos is likely non-compensatory, but is instead supported through physiological integration whose strength is determined by the well-being of the supplying ramets. Healthy culms closer to the damage also provided more resources than those farther away. Sustainable harvesting of sprouts could benefit from organized community efforts to limit the magnitude of culm damage, provide adequate spacing between harvested sites, and ensure sufficient time interval between harvests. Vegetation boundaries relatively resilient to infrequent, large-scale events are likely maintained by climatic factors and may be sensitive to climate change. Continual monitoring is, therefore, integral to the sustainability of harvesting projects.
机译:满足当地人民需求的天然产品的可持续收获被许多人视为维持自然保护项目的重要手段。尽管植物通常通过补偿性生长来应对组织损伤,但由于许多植物以繁殖为代价来增强个体的健康,因此它可能无法确保种群的长期可持续性。偶尔发生的大规模事件,尤其是文件不充分的事件,可能进一步威胁可持续性。我们研究了矮苗竹(Pseudosasa usawai)种群中的芽苗收获对芽苗生长的影响,该种群似乎从罕见的大规模肥大事件中恢复了过来。实验结果表明,尽管单发芽收割不会显着改变随后的发芽量和结构,但伴随发芽收割的茎秆损伤会导致芽短,变薄和少。在迎风处,连续收获的地方和受损程度更严重的地方发现了较弱的恢复。这些发现表明,受损矮竹的芽苗生长可能是无补偿的,而是通过生理整合来支持,而生理整合的强度取决于供应分株的健康状况。距离灾区较近的健康树种也比距离较远的树种提供了更多的资源。可持续的发芽收割可得益于有组织的社区努力,以限制茎秆的破坏程度,在收割的地点之间提供足够的间隔,并确保收割之间有足够的时间间隔。植被边界对罕见的大规模事件相对有弹性,这可能是由于气候因素造成的,并且可能对气候变化敏感。因此,持续监测是收获项目可持续性的组成部分。

著录项

  • 来源
    《Environmental Management》 |2014年第2期|320-330|共11页
  • 作者单位

    Department of Life Science, Chinese Culture University, Taipei 11114, Taiwan, ROC,Graduate Institute of Earth Science, Chinese Culture University, Taipei 11114, Taiwan, ROC;

    Department of Landscape Architecture, Chinese Culture University, 55 Hwakang Rd., Yangmingshan, Taipei 11114, Taiwan, ROC;

    Department of Life Science, Chinese Culture University, Taipei 11114, Taiwan, ROC;

    Department of Life Science, Chinese Culture University, Taipei 11114, Taiwan, ROC;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Bamboo sprout; Dwarf bamboo; Harvest; Wind stress; Compensatory growth; Physiological integration;

    机译:竹笋筱;收获风应力补偿性增长;生理整合;
  • 入库时间 2022-08-17 13:27:01

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