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| Influence of simulated warming using OTC on physiological–biochemical characteristics of Elymus nutans in alpine meadow on Qinghai-Tibetan plateau | |
任飞 ; 周华坤; 赵新全; 韩发; 石丽娜; 段吉闯; 赵建忠
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| 2009-04-25 | |
| 发表期刊 | Acta Ecologica Sinica
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| ISSN | 1000-0933 |
| 卷号 | 30页码:166-171 |
| 其他摘要 | Elymus nutans Griseb. is a typical important plant species in the alpine meadow of Qinghai-Tibetan plateau. To examine the effects of temperature elevation on its physiological and chemical characteristics, a simulation study was conducted in situ with open-top chambers (OTC) followed the method of International Tundra Experiment (ITEX) from November 2002 to September 2007, and these OTCs were designed five kinds of size with bottom diameters of 0.85, 1.15, 1.45, 1.75, 2.05 m so as to rise different air temperatures. The air temperature inside OTCs increased by 2.68, 1.57, 1.20, 1.07 and 0.69 C with increase of OTC diameter compared with ambient air. We found that with increase of air temperature, the soluble sugar content and SOD (superoxide dismutase) activity in leaves of E. nutans increased first, and then decreased, whereas, the soluble protein content and GSH (Glutathione) content decreased first and increased then, the chlorophyll a and total chlorophyll contents were decreased, but the contents of chlorophyll b were higher than that of control. Increased temperature enhanced the above-ground biomass and blade height of E. nutans. These results indicated that elevated temperature had significant and complicated effects on physiological–biochemical characteristics of E. nutans on Qinghai-Tibet plateau, when the temperature increased within the range of 0.69–1.57 C, it may have positive effects on plant growth and development, and E. nutans could adapt even develop defensive strategy to the changes of a certain ecological environment changes. |
| 收录类别 | CSCD |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://210.75.249.4/handle/363003/2120 |
| 专题 | 中国科学院西北高原生物研究所 |
| 推荐引用方式 GB/T 7714 | 任飞,周华坤,赵新全,等. Influence of simulated warming using OTC on physiological–biochemical characteristics of Elymus nutans in alpine meadow on Qinghai-Tibetan plateau[J]. Acta Ecologica Sinica,2009,30:166-171. |
| APA | 任飞.,周华坤.,赵新全.,韩发.,石丽娜.,...&赵建忠.(2009).Influence of simulated warming using OTC on physiological–biochemical characteristics of Elymus nutans in alpine meadow on Qinghai-Tibetan plateau.Acta Ecologica Sinica,30,166-171. |
| MLA | 任飞,et al."Influence of simulated warming using OTC on physiological–biochemical characteristics of Elymus nutans in alpine meadow on Qinghai-Tibetan plateau".Acta Ecologica Sinica 30(2009):166-171. |
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