Stoichiometric Characteristics of Several Plants of Arbor, Shrub and Grass in Lüliang Mountainous Region

CAO Yuan-bo; WANG Bai-tian; WEI Ting-ting; CHI Lu; CHEN Zhi-hao

doi:10.13961/j.cnki.stbctb.2014.05.060

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Stoichiometric Characteristics of Several Plants of Arbor, Shrub and Grass in Lüliang Mountainous Region

- Stoichiometric Characteristics of Several Plants of Arbor, Shrub and Grass in Lüliang Mountainous Region
- Bulletin of Soiland Water Conservation Vol. 33, Issue 5, Pages: 290-294(2014)
- 作者机构：
  
  1. 北京林业大学水土保持学院,北京,100083
  2. 水土保持与荒漠化防治教育部重点实验室,北京,100083
  3. 中国矿业大学(北京),北京,100083
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.05.060
  CLC：
- Published：2014
- 稿件说明：
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CAO Yuan-bo, WANG Bai-tian, WEI Ting-ting, et al. Stoichiometric Characteristics of Several Plants of Arbor, Shrub and Grass in Lüliang Mountainous Region[J]. Bulletin of Soiland Water Conservation, 2014, 33(5): 290-294.
DOI：

CAO Yuan-bo, WANG Bai-tian, WEI Ting-ting, et al. Stoichiometric Characteristics of Several Plants of Arbor, Shrub and Grass in Lüliang Mountainous Region[J]. Bulletin of Soiland Water Conservation, 2014, 33(5): 290-294. DOI： 10.13961/j.cnki.stbctb.2014.05.060.

摘要

对元素的计量特征正确的解读能够促进人们对生态系统内C

P循环规律的理解。通过样地调查和样品采集

测定了吕梁山区几种乔灌草植物以及枯枝落叶的碳、氮、磷含量

系统分析了几种元素的计量规律。结果表明

相同树种不同器官的相同元素含量存在差异性

不同树种相同器官的相同元素含量存在差异性

说明植物的遗传特性和各器官不同的功能决定着元素计量的差异性;灌木各器官的相同元素存在极显著相关(p<0.01)

说明植物体各器官作为一个整体共同作用决定着元素的计量特征

草本与灌木计量特征相似;C

C/N

C/P

N/P与地区的环境因素相关:坡度与C含量和N/P存在极显著负相关(p<0.01)

郁闭度仅与C/P存在显著相关(p<0.05)

海拔因素只与N/P不存在显著相关

说明环境与植物体的能量和物质流动影响着元素的计量特征。

Abstract

The correct interpretation of stoichiometric characteristics can promote the understanding of C

P circulating law within the ecosystem. Through sample plot survey and sample collection

the C

N and P content of several arbor

shrub

grass and litter were determined

and the element stoichiometric characteristics of several plants were systematically analyzed in Lüliang mountainous region. The results showed there were differences between the same element content of different organs of the same species

and also between the same element content of same organ of the different species. It indicated that the plant genetic characteristics and different function of organs determines the difference of stoichiometry. The same element of shrub's organs were significantly correlated

indicating that organs of plant individual decided collectively the stoichiometry. The stoichiometry of grasses was similar to shrubs. C

P content and the C/N

C/P

N/P radio were significantly related to local environmental factors. Slope had a significantly negative relation on the content of C and N/P. Crown density was only significantly correlated to C/P ratio

and altitude factor was significantly correlated to all measurement indexes except of N/P

indicating that environment

energy and material flows of plant had an influence on stoichiometry.

关键词

Keywords

references

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