...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Forest Planning >Spatial Heterogeneity of Colonizing Tree Communities in Relation to Slope Characteristics and Stand Structure of a Cryptomeria japonica Plantation in Northern Japan
【24h】

Spatial Heterogeneity of Colonizing Tree Communities in Relation to Slope Characteristics and Stand Structure of a Cryptomeria japonica Plantation in Northern Japan

机译：日本北部柳杉人工林群落群落空间异质性与坡度特征和林分结构的关系

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The objective of this study was to infer the most important gradients influencing species composition and abundance of colonizing native trees (CNT) in an unthinned Japanese cedar (Cryptomeria japonica D. Don) plantation in northern Japan. A 0.84-ha (60 x 140m) plot was established in the stand and was subdivided into a total of 42 subplots (20x 10m each). For each tree >3cm in diameter at breast height (DBH) in each subplot, we recorded the species and DBH. Path analysis with structural equation modeling was performed to analyze the correlation and causal relationships between slope characteristics, soil properties and vegetation attributes of the set of subplots. Species composition of CNT was strongly affected by site conditions along relativelyshort gradients of slope aspect and soil water content, but stand height had little effect on species composition. In contrast, the abundance of CNT was strongly affected by site conditions along relatively short gradients of slope aspect and soil watercontent, and stand height also significantly affected abundance. The contrasting patterns of variation between species composition and abundance of the CNT may reflect the fact that the mortality rate of CNT at the adult tree stage varies according to vertical stand structure rather than to interspecific differences in survival patterns. In conclusion, recruitment patterns from the juvenile tree stage for each species were related principally to species composition and abundance of CNT, and site-specific mortality at the adult stage was also significantly related to the abundance of CNT.
机译：这项研究的目的是推断影响日本北部未变薄的日本雪松（Cryptomeria japonica D. Don）人工林中殖民物种树（CNT）物种组成和丰度的最重要梯度。在展位中建立了一个0.84公顷（60 x 140m）的地块，并细分为总共42个子图（每个20x 10m）。对于每个子图中直径大于3厘米，胸高（DBH）的树​​，我们记录了树种和DBH。使用结构方程模型进行路径分析，以分析子图集的边坡特征，土壤属性和植被属性之间的相关性和因果关系。碳纳米管的物种组成受到场地条件的强烈影响，坡度和土壤含水量相对较短，但林分高度对物种组成的影响很小。相比之下，CNT的丰度受场地条件的影响，沿坡向和土壤含水量的相对较短的梯度变化，而林分高度也显着影响丰度。物种组成和碳纳米管丰度之间变化的对比模式可能反映出这样的事实，即成年树阶段碳纳米管的死亡率根据垂直林分结构而不是生存模式的种间差异而变化。总之，从幼树阶段到每个物种的招聘模式主要与物种组成和CNT的丰度有关，而成年阶段的特定地点死亡率也与CNT的丰度显着相关。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号