Carbon sequestration and ecosystem respiration for 4 years in a Scots pine forest
文献类型：期刊论文
| 作者 | Zha, T ; Kellomaki, S ; Wang, KY ; Rouvinen, I |
| 刊名 | GLOBAL CHANGE BIOLOGY
 |
| 出版日期 | 2004 |
| 卷号 | 10期号:9页码:1492_1503 |
| 关键词 | carbon sequestration ecosystem respiration eddy covariance gross primary production scots pine forest |
| ISSN号 | 1354-1013 |
| 通讯作者 | Zha, T, Univ Joensuu, Fac Forestry, POB 111, FIN-80101 Joensuu, Finland. |
| 中文摘要 | The net exchange of CO2 (NEE) between a Scots pine (Pinus sylvestris L.) forest ecosystem in eastern Finland and the atmosphere was measured continuously by the eddy covariance (EC) technique over 4 years (1999-2002). The annual temperature coefficient (Q(10)) of ecosystem respiration (R) for these years, respectively, was 2.32, 2.66, 2.73 and 2.69. The light-saturated rate of photosynthesis (A(max)) was highest in July or August, with an annual average A(max) of 10.9, 14.6, 15.3 and 17.1 mumol m(-2) s(-1) in the 4 years, respectively. There was obvious seasonality in NEE, R and gross primary production (GPP), exhibiting a similar pattern to photosynthetically active radiation (PAR) and air temperature. The integrated daily NEE ranged from 2.59 to -4.97 g C m(-2) day(-1) in 1999, from 2.70 to -4.72 in 2000, from 2.61 to -4.71 in 2001 and from 5.27 to -4.88 in 2002. The maximum net C uptake occurred in July, with the exception of 2000, when it was in June. The interannual variation in ecosystem C flux was pronounced. The length of the growing season, based on net C uptake, was 179, 170, 175 and 176 days in 1999-2002, respectively, and annual net C sequestration was 152, 101, 172 and 205 g C m(-2) yr(-1). It is estimated that ecosystem respiration contributed 615, 591, 752 and 879 g C m(-2) yr(-1) to the NEE in these years, leading to an annual GPP of -768, -692, -924 and -1084 g C m(-2) yr(-1). It is concluded that temperature and PAR were the main determinants of the ecosystem CO2 flux. Interannual variations in net C sequestration are predominantly controlled by average air temperature and integrated radiation in spring and summer. Four years of EC data indicate that boreal Scots pine forest ecosystem in eastern Finland acts as a relatively powerful carbon sink. Carbon sequestration may benefit from warmer climatic conditions. |
| 学科主题 | Biodiversity Conservation; Ecology; Environmental 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/351003/21612]  |
| 专题 | 成都生物研究所_生态研究 |
| 推荐引用方式 GB/T 7714 | Zha, T,Kellomaki, S,Wang, KY,et al. Carbon sequestration and ecosystem respiration for 4 years in a Scots pine forest[J]. GLOBAL CHANGE BIOLOGY,2004,10(9):1492_1503. |
| APA | Zha, T,Kellomaki, S,Wang, KY,&Rouvinen, I.(2004).Carbon sequestration and ecosystem respiration for 4 years in a Scots pine forest.GLOBAL CHANGE BIOLOGY,10(9),1492_1503. |
| MLA | Zha, T,et al."Carbon sequestration and ecosystem respiration for 4 years in a Scots pine forest".GLOBAL CHANGE BIOLOGY 10.9(2004):1492_1503. |
入库方式： OAI收割
来源：成都生物研究所
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