• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ecological research >Size dependence of leaf area and the mass of component organs during a course of self-thinning in a hinoki (Chamaecyparis obtusa) seedling population
【24h】

Size dependence of leaf area and the mass of component organs during a course of self-thinning in a hinoki (Chamaecyparis obtusa) seedling population

机译：扁柏（Chmaecyparis obtusa）幼苗种群自稀过程中叶面积的大小依赖性和组成器官的质量

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 allometric equation, y = gx~b, was applied monthly to the relationships between two different dimensions of tree seedlings of hinoki cypress (Chamaecyparis obtusa) during a course of self-thinning from April 1990 to March 1991 to detect differences in biomass allocation among individuals. As the h-value in the allometry of crown length and seedling height was greater than unity for all seasons, crown ratio became greater as seedling height increased. Leaf weight ratio increased with increasing seedling size because the h-value in the allometry of leaf dry weight and whole seedling dry weight was greater than unity in every month. Therefore, smaller seedlings are disadvantageous to photosynthetic production by leaves. In contrast, the leaf area ratio was constant irrespective of seedling size because the h-value in the allometry of leaf area and whole seedling dry weight was nearly equal to unity in most seasons. In addition, because the h-value in the allometry of leaf area and leaf dry weight was less than unity in all seasons, specific leaf area decreased with an increase in leaf dry weight, indicating that smaller seedlings adapt to low light environments by possessing shade leaves. Root weight ratio decreased with increasing seedling size because the h-value in the allometry of root dry weight and whole seedling dry weight was less than unity in most seasons.
机译：在1990年4月至1991年3月的自瘦过程中，每月将变长方程y = gx〜b应用于扁柏（Chamaecyparis obtusa）的两种不同尺寸树苗之间的关系，以检测生物量分配之间的差异。个人。在所有季节中，当冠长和苗高的变幅法中的h值均大于1时，随着苗高的增加，冠比也变大。叶片重量比随幼苗大小的增加而增加，这是因为叶片干重和整个幼苗干重的等速线图中的h值每个月都大于1。因此，较小的幼苗不利于叶片的光合生产。相反，叶面积比是恒定的，与幼苗大小无关，这是因为在大多数季节中，叶面积的变幅和整个幼苗干重的h值几乎等于1。另外，由于叶面积和叶干重的变态法中的h值在所有季节都小于1，因此比叶面积随叶干重的增加而减少，这表明较小的幼苗通过遮荫适应弱光环境。树叶。根重比随幼苗大小的增加而降低，这是因为在大多数季节中，根干重和整个幼苗干重的异速生长法中的h值均小于1。

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