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|

贡嘎山地区黄背栎的光合特性(PDF)

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

Issue:
2006年01期
Page:
25-28
Column:
研究论文
publishdate:
2006-01-20

Article Info:/Info

Title:
Photosynthetic Characteristics of Quercus pannosa in Gongga Mountain Region
Article ID:
1000-2006(2006)01-0025-04
Author(s):
ZHU Wan-ze1 WU Yong-bo2 XUE Jian-hui2
1. Institute of Mountain Harzard and Environment CAS, Chengdu 610041, China; 2. College of Forest Resources and Environment Nanjing Forestry University, Nanjing 210037, China
Keywords:
Quercus pannosa Photosynthetic characteristics Gongga Mountain region
Classification number :
S718.43
DOI:
10.3969/j.jssn.1000-2006.2006.01.006
Document Code:
A
Abstract:
The photosynthetic characteristics of leaves of Quercus pannosa at the different elevation spots of Gongga Mountain region were studied by using the Li-6 400 portable photosynthesis system. The results were as follows: (1) The diurnal variation of net photosynthetic rate (Pn) on sunny days in August were one smooth peak curve and had no midday depression. With the elevation increasing, the net photosynthetic rate and the transpiration rate and the water use efficiency decreased, but the conductance increased, which favored gas exchange of photosynthesis in the plants of high elevation; (2) There were obvious differences in the responses of Pn to photosynthetic active radiation at different elevation spots. The light compensate point(LCP) and the light saturated point(LSP) of leaves were 39.16~68.06/Lmol/(m2?s) and 1124.78~1754.88μmol/(m2?s) respectively. The apparent quantum efficiency was between 0.02812 and 0.03173. With the elevation increasing, the LCP, LSP and the maximum net photosynthetic rate of leaves increased; (3) The CO2 compensate point was between 68.47μmol/mol and 105.21μmol/mol. With the elevation increasing, the O2 compensate point decreased, which favored for adaptability of plants to the circumstance of low CO2 pressure in higher elevation regions. The CO2 saturated point was 700μmol/mol or so, and the carboxylation efficiency was between 0.035 and 0.038.

References

-

Last Update: 2013-05-20