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首页> 外文期刊>Advance journal of food science and technology >Response of Natural Recruitment to Gap Size in Chinese Pine Plantation
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Response of Natural Recruitment to Gap Size in Chinese Pine Plantation

机译：杉木人工林自然补充对间隙大小的响应

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摘要

Building the stratified uneven-aged mixed forest and promoting the natural recruitment is an important way to realize the sustainable management of forest. This study is to characterize the variation discipline of growth of natural recruitment in different size gaps in 50 years old Chinese pine Plantation as well as its community structure and spatial pattern. All recruitment individuals were measured and stem-mapped in plots and the growth indexes were quantified in different size gaps and under the canopy as well as spatial pattern of recruitment. Ripley's K-function was selected to analyze spatial pattern of recruitment and spatial association between recruit cohorts in different development stages. Results were showed as following: the proportion of Chinese pine in the natural recruitment community was all higher than 95% in gaps and under the canopy. With the increase of gap size, the recruit density dropped off, whereas the average height, basal stem and age of recruit increased. Gaps enhanced the recruit density and improved the growth of recruit. However, gaps improvement will not fundamentally solve the problem of slow growth speed, low lifetime and maladjusted age structure. The recruitment of Chinese pine was exhibited aggregation at research scales. Intraspecific competition and adult trees were showed with little effort on recruitment. The role of improving the recruitment by gaps was limited under the existing management technology system. Therefore, it is necessary to apply human disturbance to promote the recruitment. To introduce other tree species by human should be attempted. The effort of gaps created by more intensify disturbance and various disturbance frequency ought to be explored so as to find out the most effective interference measurements.
机译：建设分层不均一的混交林，促进自然采伐，是实现森林可持续经营的重要途径。这项研究的目的是描述50岁的油松人工林在不同大小的间隙中自然募集生长的变化规律及其群落结构和空间格局。测量所有征募个体并在地块中进行茎映射，并在不同大小的缺口，冠层以及种群的空间格局下对生长指数进行定量。选择Ripley的K函数来分析征兵的空间格局和不同发展阶段征兵队列之间的空间关联。结果表明：在自然采伐群落中，在松林和林冠下，松树的比例均高于95％。随着缺口大小的增加，新兵密度下降，而新兵的平均身高，基础茎和年龄增加。缺口提高了新兵的密度并改善了新兵的成长。但是，差距的改善并不能从根本上解决增长速度慢，寿命短和年龄结构失调的问题。在研究规模上，油松的募集表现出聚集性。种内竞争和成年树被证明几乎不招募。在现有的管理技术体系下，通过差距改善招聘的作用受到限制。因此，有必要施加人为干扰来促进招募。应该尝试通过人为引入其他树种。应该探索由更大程度的扰动和各种扰动频率造成的间隙的工作量，以找到最有效的干扰测量。

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  • 来源
    《Advance journal of food science and technology》 |2013年第11期|1466-1472|共7页
  • 作者

    Boqian Dong; Lvyi Ma; Zhongkui Jia; Jie Duan;

  • 作者单位

    Key Laboratory for Silviculture and Conservation of Ministry of Education in Beijing Forestry University, Beijing, 100083, China;

    National Energy R and D Center for Non-Food Biomass, Beijing Forestry University, Beijing, 100083, China;

    Key Laboratory for Silviculture and Conservation of Ministry of Education in Beijing Forestry University, Beijing, 100083, China;

    National Energy R and D Center for Non-Food Biomass, 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

    Gaps; plantation; recruitment; Ripley's K; spatial pattern;

    机译：缺口;种植园招聘;里普利的K;空间格局;

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