Effects of Elevated CO<sub>2</sub> Concentration and Temperature on the Biomass and its Allocation of <i>Medicago sativa</i>

YUAN Hui; HE Xian-ping; LAN Li-da; LI De-wen

doi:10.16779/j.cnki.1003-5508.2013.01.011

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Volume 34 Issue 1

Nov. 2019

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Article Navigation > Journal of Sichuan Forestry Science and Technology > 2013 > 34(1): 48-51

YUAN Hui, HE Xian-ping, LAN Li-da, LI De-wen. Effects of Elevated CO2 Concentration and Temperature on the Biomass and its Allocation of Medicago sativa[J]. Journal of Sichuan Forestry Science and Technology, 2013, 34(1): 48-51. doi: 10.16779/j.cnki.1003-5508.2013.01.011

Citation:

YUAN Hui, HE Xian-ping, LAN Li-da, LI De-wen. Effects of Elevated CO₂ Concentration and Temperature on the Biomass and its Allocation of Medicago sativa[J]. Journal of Sichuan Forestry Science and Technology, 2013, 34(1): 48-51. doi: 10.16779/j.cnki.1003-5508.2013.01.011

Effects of Elevated CO₂ Concentration and Temperature on the Biomass and its Allocation of Medicago sativa

doi: 10.16779/j.cnki.1003-5508.2013.01.011

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Sichuan Forest Inventory and Plan Institute, Chengdu 610081, China;Bureau of Guangyuan City Planning, Construction and Housing, Guangyuan 628000, China

Received Date: 2012-09-17

Abstract

In this paper, with enclosed chamber system, Medicago sativa seedlings were exposed to two CO₂ concentrations levels (ambient and double ambient CO₂ concentration), two temperature levels (ambient and + 2.2℃) and their combination for one growth season in order to research on its biomass accumulation and biomass allocation. The results showed that elevated CO₂ significantly increased the accumulation of root, stem and leaf biomasses and total biomass. And elevated temperature increased the leaf and stem biomasses and total biomass, but had no obvious effect on the root-biomass. Elevated temperature had positive effect on the accumulation of root, stem, leaf and total biomass under elevated CO₂. The combination of elevated CO₂ and temperature increased W_source/W_sink and available biomass, but decreased R/S and root biomass.
- Climate change;
- Medicago sativa;
- Biomass;
- Allocation;
- R/S
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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Effects of Elevated CO₂ Concentration and Temperature on the Biomass and its Allocation of Medicago sativa

doi: 10.16779/j.cnki.1003-5508.2013.01.011

Sichuan Forest Inventory and Plan Institute, Chengdu 610081, China;Bureau of Guangyuan City Planning, Construction and Housing, Guangyuan 628000, China

Received Date: 2012-09-17

Key words:

Abstract: In this paper, with enclosed chamber system, Medicago sativa seedlings were exposed to two CO₂ concentrations levels (ambient and double ambient CO₂ concentration), two temperature levels (ambient and + 2.2℃) and their combination for one growth season in order to research on its biomass accumulation and biomass allocation. The results showed that elevated CO₂ significantly increased the accumulation of root, stem and leaf biomasses and total biomass. And elevated temperature increased the leaf and stem biomasses and total biomass, but had no obvious effect on the root-biomass. Elevated temperature had positive effect on the accumulation of root, stem, leaf and total biomass under elevated CO₂. The combination of elevated CO₂ and temperature increased W_source/W_sink and available biomass, but decreased R/S and root biomass.