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首页> 外文期刊>Journal of Forest Planning >Evaluation of Landscape-level Genetic Diversity in Mixed Managed Forest in Hokkaido, Japan
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Evaluation of Landscape-level Genetic Diversity in Mixed Managed Forest in Hokkaido, Japan

机译：日本北海道混交林景观水平遗传多样性的评价

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摘要

The aim of this research was to develop an indicator of genetic diversity for three major conifer species, Abies sachalinensis, Picea jezoensis and Picea glehnii, and to evaluate landscape-level genetic diversity in the Toyohira River basin, of Hokkaido, Japan. Biodiversity is a key factor for sustainable forest management and often defined at three levels, ecosystem of region, species and genes. Ecosystem and species levels of diversity can be evaluated at the landscape level based on ground surveyand spatial information. On the other hand, genetic diversity at the landscape level is rather difficult to assess due to the size of the distribution area and because ground surveys and direct measurements of genetic difference are needed to clarify biogeographical characteristics. For this study, we first defined a genetically homogeneous area. We then developed a genetic diversity indicator, "number of fathers," using forest register information. Finally, we evaluated the genetic diversity in our target basin. The results show that Abies sachalinensis and Picea jezoensis were widely distributed in their own "high diversity" genetic zone, whereas the high-diversity zone for Picea glehnii was distributed as islands. These results reflect biogeographiccharacteristics and show that the developed indicator for genetic diversity is appropriate for illustrating landscape-level genetic diversity in the Toyohira River basin.
机译：这项研究的目的是为日本北海道丰平河流域的三个主要针叶树种冷杉冷杉（Abies sachalinensis），根皮云杉（Picea jezoensis）和格氏云杉（Picea glehnii）建立遗传多样性指标，并评估景观水平的遗传多样性。生物多样性是可持续森林管理的关键因素，通常定义为区域，物种和基因的生态系统三个层次。可以根据地面调查和空间信息在景观水平上评估生态系统和物种多样性水平。另一方面，由于分布区域的大小以及需要通过土地调查和遗传差异的直接测量来阐明生物地理特征，因此很难评估景观一级的遗传多样性。对于这项研究，我们首先定义了一个遗传上均一的区域。然后，我们使用森林登记信息开发了遗传多样性指标“父亲数”。最后，我们评估了目标流域的遗传多样性。结果表明，萨比林冷杉和根桑云杉广泛分布在它们自己的“高多样性”遗传区中，而格氏云杉的高多样性区则作为岛屿分布。这些结果反映了生物地理特征，并表明已开发的遗传多样性指标适合于说明丰平河流域的景观水平遗传多样性。

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