Response of Photosynthesis Physiological Characteristics of Predominant Species to CO<sub>2</sub> on Grassland of Yunwu Mountain

HU Xiang-ming; WANG Xi-ying; CHENG Ji-min; WAN Hui-e; ZHAO Yan-yun

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Response of Photosynthesis Physiological Characteristics of Predominant Species to CO₂ on Grassland of Yunwu Mountain

- Response of Photosynthesis Physiological Characteristics of Predominant Species to CO₂ on Grassland of Yunwu Mountain
- Bulletin of Soiland Water Conservation Vol. 27, Issue 3, Pages: 23-24(2008)
- 作者机构：
  
  1. 滨州学院城市与环境系山东省黄河三角洲生态环境重点实验室,山东,滨州,256603
  2. 滨州市人民医院,山东,滨州,256600
  3. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
- 作者简介：
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- Published：2008
- 稿件说明：
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HU Xiang-ming, WANG Xi-ying, CHENG Ji-min, et al. Response of Photosynthesis Physiological Characteristics of Predominant Species to CO₂ on Grassland of Yunwu Mountain[J]. Bulletin of Soiland Water Conservation, 2008, 27(3): 23-24.
DOI：

HU Xiang-ming, WANG Xi-ying, CHENG Ji-min, et al. Response of Photosynthesis Physiological Characteristics of Predominant Species to CO₂ on Grassland of Yunwu Mountain[J]. Bulletin of Soiland Water Conservation, 2008, 27(3): 23-24. DOI：

摘要

对云雾山自然保护区主要优势种的光合生理特性随CO

浓度升高的变化进行了研究。研究结果表明

随CO

浓度的升高

4种植物的胞间CO

浓度升高

气孔导度下降

蒸腾速率减少

水分利用效率提高

光合速率增加。然而不同生长期、不同植物之间光合特性存在明显差异。7月份4种植物的光合速率皆最大

8—9月份较小;不同植物之间光合速率和蒸腾速率顺序为大针茅>铁杆蒿>本氏针茅>厚穗冰草;水分利用效率的顺序为本氏针茅>铁杆蒿>大针茅>厚穗冰草。同时随CO

浓度的升高

光系统Ⅱ的开放比例、实际光能捕获效率、电子传递速率、实际光化学效率和PhiCO

值均呈直线增加

而热耗散呈下降趋势。

Abstract

Response of eco-physiological characteristics to CO2 in Stipa bungeana

Artemisia sacrorum

Stipa grandis

and Aneurolepidium dasystachys leaves was studied.Results showed that with CO2 concentration increasing

photosynthesis rate(Pn)

intercellular CO2 concentration

and water use efficiency(WUE) of the four species were increased and stomatal conductance and transpiration rate(Tr) were decreased.Photosynthesis characteristics of the four species varied with season.The order of the species

in terms of Pn and Tr

was: Stipa grandis Artemisia sacrorum Stipa bungeana Aneurolepidium dasystachys;and the order of the species

in terms of WUE

was: Stipa bungeana Artemisia sacrorum Stipa grandis Aneurolepidium dasystachys.Meanwhile

PSⅡ open proportion

conversion efficiency of primary light energy under light of PSⅡ

actual PSⅡ efficiency

and PhiCO2 were linearly increased with CO2 concentration.However

the non-photochemical quenching coefficient presented a decline trend.

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Related Author

HU Xiang-ming

WANG Xi-ying

CHENG Ji-min

WAN Hui-e

ZHAO Yan-yun

XUE Lu

MA Jun-jie

GAO Su-hua

Related Institution

Department of Urban and Environmentand Key Laboratory for Eco-environment Sciences of Yellow River Delta of Shandong ProvinceBinzhou UniversityBinzhouShandong 256603China

General Hospital of Binzhou CityBinzhouShandong 256600China

Institute of Soil and Water ConservationChinese Academy of Sciences and Ministry of Water ResourcesYanglingShaanxi 712100China

College of Urban and Environmental Science, Northwestern University, Xian

Chinese Academy of Meteorological Sciences

⁰

Response of Photosynthesis Physiological Characteristics of Predominant Species to CO2 on Grassland of Yunwu Mountain

DOI：

摘要

Abstract

关键词

Keywords

references

Response of Photosynthesis Physiological Characteristics of Predominant Species to CO₂ on Grassland of Yunwu Mountain