Effects of nitrogen addition on vegetation and ecosystem carbon in a semi-arid grassland
文献类型：期刊论文
| 作者 | Zeng, De-Hui2; Li, Lu-Jun2,3; Fahey, Timothy J.1; Yu, Zhan-Yuan2; Fan, Zhi-Ping2; Chen, Fu-Sheng4 |
| 刊名 | BIOGEOCHEMISTRY
 |
| 出版日期 | 2010-04-01 |
| 卷号 | 98期号:1-3页码:185-193 |
| 关键词 | Carbon Partitioning Carbon Pool Keerqin Sandy Lands Nitrogen Limitation Sandy Grassland Species Composition |
| ISSN号 | 0168-2563 |
| DOI | 10.1007/s10533-009-9385-x |
| 英文摘要 | To clarify responses of plant and soil carbon (C) and nitrogen (N) pools in grassland ecosystem to N addition, a field experiment was performed in a grassland in Keerqin Sandy Lands, Northeast China. We investigated vegetation composition and C and N pools of plant and soil (0-30 cm) after five consecutive years of N addition at a rate of 20 g N m(-2) y(-1). Vegetation composition and species diversity responded dramatically to N addition, as dominance by C(4) perennials was replaced with C(3) annuals. Carbon in aboveground pool increased significantly (over two-fold), mainly due to the increase of the C in aboveground living plants and surface litter, which increased by 98 and 134%, respectively. Although soil C did not change significantly, the root C pool decreased in response to 5 years of N addition. The total ecosystem C pool was not significantly impacted by N addition because the large soil pool did not respond to N addition, and the increase in aboveground C was offset by the decrease in root C pool. Moreover, N addition significantly increased the aboveground N pool, but had no significant effects on belowground and total ecosystem N pools. Our results suggest that in the mid-term N addition alters the C and N partitioning in above- and belowground pools, but has no significant effects on total ecosystem C and N pools in these N-limited grasslands. |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000276605000014 |
| 出版者 | SPRINGER |
| 源URL | [http://210.72.129.5/handle/321005/121487]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Zeng, De-Hui |
| 作者单位 | 1.Cornell Univ, Dept Nat Resources, Ithaca, NY 14853 USA 2.Chinese Acad Sci, Inst Appl Ecol, Daqinggou Ecol Stn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 4.Nanchang Univ, Coll Life Sci, Nanchang 330031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng, De-Hui,Li, Lu-Jun,Fahey, Timothy J.,et al. Effects of nitrogen addition on vegetation and ecosystem carbon in a semi-arid grassland[J]. BIOGEOCHEMISTRY,2010,98(1-3):185-193. |
| APA | Zeng, De-Hui,Li, Lu-Jun,Fahey, Timothy J.,Yu, Zhan-Yuan,Fan, Zhi-Ping,&Chen, Fu-Sheng.(2010).Effects of nitrogen addition on vegetation and ecosystem carbon in a semi-arid grassland.BIOGEOCHEMISTRY,98(1-3),185-193. |
| MLA | Zeng, De-Hui,et al."Effects of nitrogen addition on vegetation and ecosystem carbon in a semi-arid grassland".BIOGEOCHEMISTRY 98.1-3(2010):185-193. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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