我们的网站为什么显示成这样?

可能因为您的浏览器不支持样式,您可以更新您的浏览器到最新版本,以获取对此功能的支持,访问下面的网站,获取关于浏览器的信息:

|Table of Contents|

不同优势度马尾松的生物量及根系分布特征(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2008年04期
Page:
71-75
Column:
研究论文
publishdate:
2008-07-20

Article Info:/Info

Title:
Characteristics of biomass and root distribution of Pinus massoniana with different dominance
Article ID:
1000-2006(2008)04-0071-05
Author(s):
ZHANG Zhi-jun1 WANG Yan-hui1* YU Peng-tao1 YUAN Yu-xin2 LI Zhi-yong1 ZHANG Guo-zeng3 LIU Ying-gen4
1. Research Institute of Forest Ecology Environment and Protection, CAF, Beijing 100091, China; 2. College of Forestry Agricultural University of Hebei, Baoding 071000, China; 3. Departmen, t of Park Bureau for Gardens Shijiazhuang, Shijiazhuang 050011, China; 4. Forestry Workstation of Jinnan County, Tianjin 300350, China
Keywords:
Acid rain region Pinus massoniana Biomass structure Root distribution
Classification number :
S791.248; S718
DOI:
10.3969/j.jssn.1000-2006.2008.04.016
Document Code:
A
Abstract:
The structure characteristics of biomass and spatial distribution of root system of Pinus massoniana with different dominance were systematically investigated in the acid rain region of Chongqing, China. The results showed that the aboveground biomass accounts for more than 90%of the total biomass and the ratio of roots was less then 10%. The order of biomass ratio of different organs was trunk, branch,root, bark, needle. The depth and width of root distribution varied obviously with the dominance of individual trees. For dominant trees, the vertical root could reach a depth of 130 cm, and the horizontal range of root system with a radius of 3 m. On the other hand, it is less then 80 cm in depth and 1.5 m in radius for the non-dominant trees. The biomass proportion of roots within different diameter range was ordered as stump,large root, middle root, small root, fine root. The biomass sum of stump and large root accounts for more than 90%of the total amount of root system, while the proportion of all other root diameter classes accounts for only less than 10%. The study of fine root distribution of Pinus massoniana using soil coring method showed that the fine root was plentiful in the soil layer of 0--40 cm. It was especially concentrated in the upper soil layer (0--10 cm). Fine root biomass decreased with distance from trunk of sampled trees increased. It reached a minimum at the position of 2.0 m away from the trunk.

References

-

Last Update: 2013-05-20