Seasonal variation in respiration of 1-year-old shoots of Scots pine exposed to elevated carbon dioxide and temperature for 4 years
文献类型：期刊论文
| 作者 | Zha, TS ; Kellomaki, S ; Wang, KY |
| 刊名 | ANNALS OF BOTANY
 |
| 出版日期 | 2003 |
| 卷号 | 92期号:1页码:89_96 |
| 关键词 | Scots pine Pinus sylvestris L. elevated CO2 elevated temperature shoot respiration |
| ISSN号 | 0305-7364 |
| 通讯作者 | Zha, TS, Univ Joensuu, Fac Forestry, POB 111, FIN-80101 Joensuu, Finland. |
| 中文摘要 | Sixteen 20-year-old Scots pine (Pinus sylvestris L.) trees growing in the field were enclosed for 4 years in environment-controlled chambers that maintained: (1) ambient conditions (CON); (2) elevated atmospheric CO2 concentration (ambient + 350 mumol mol(-1); EC); (3) elevated temperature (ambient +2-6 degreesC; ET); or (4) elevated CO2 and elevated temperature (ECT). The dark respiration rates of 1-year-old shoots, from which needles had been partly removed, were measured over the growing season in the fourth year. In all treatments, the temperature coefficient of respiration, Q(10), changed with season, being smaller during the growing season than at other times. Respiration rate varied diurnally and seasonally with temperature, being highest around mid-summer and declining gradually thereafter. When measurements were made at the temperature of the chamber, respiration rates were reduced by the EC treatment relative to CON, but were increased by ET and ECT treatments. However, respiration rates at a reference temperature of 15 degreesC were reduced by ET and ECT treatments, reflecting a decreased capacity for respiration at warmer temperatures (negative acclimation). The interaction between season and treatment was not significant. Growth respiration did not differ between treatments, but maintenance respiration did, and the differences in mean daily respiration rate between the treatments were attributable to the maintenance component. We conclude that maintenance respiration should be considered when modelling respiratory responses to elevated CO2 and elevated temperature, and that increased atmospheric temperature is more important than increasing CO2 when assessing the carbon budget of pine forests under conditions of climate change. (C) 2003 Annals of Botany Company. |
| 学科主题 | Plant Sciences |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2011-07-08 |
| 源URL | [http://210.75.237.14/handle/351003/21434]  |
| 专题 | 成都生物研究所_生态研究 |
| 推荐引用方式 GB/T 7714 | Zha, TS,Kellomaki, S,Wang, KY. Seasonal variation in respiration of 1-year-old shoots of Scots pine exposed to elevated carbon dioxide and temperature for 4 years[J]. ANNALS OF BOTANY,2003,92(1):89_96. |
| APA | Zha, TS,Kellomaki, S,&Wang, KY.(2003).Seasonal variation in respiration of 1-year-old shoots of Scots pine exposed to elevated carbon dioxide and temperature for 4 years.ANNALS OF BOTANY,92(1),89_96. |
| MLA | Zha, TS,et al."Seasonal variation in respiration of 1-year-old shoots of Scots pine exposed to elevated carbon dioxide and temperature for 4 years".ANNALS OF BOTANY 92.1(2003):89_96. |
入库方式： OAI收割
来源：成都生物研究所
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