Intra-seasonal precipitation amount and pattern differentially affect primary production of two dominant species of Inner Mongolia grassland
文献类型：SCI/SSCI论文
| 作者 | Liu Y. S. ; Pan Q. M. ; Zheng S. X. ; Bai Y. F. ; Han X. G. |
| 发表日期 | 2012 |
| 关键词 | Climate change Precipitation regime Soil moisture Annual net primary production Relative growth rate Photosynthesis Water use efficiency net primary productivity different stocking rates semiarid grassland plant-responses terrestrial ecosystems rainfall variability shortgrass steppe arid ecosystems climate-change water |
| 英文摘要 | Understanding impacts of changed precipitation regimes on plant primary production at species level is critical for predicting ecosystem responses to climate change. We examined the responses of two dominant species of Inner Mongolia grassland to altered seasonal precipitation regimes by a manipulated rainout shelter experiment. With the increase of precipitation amount, the perennial rhizomatous grass Leymus chinensis increased below-ground biomass while the perennial bunchgrass Stipa grandis increased above-ground biomass. With the increase of the interval between rainfall events, biomass production of L chinensis reduced significantly while S. grandis was not affected. Soil moisture and inorganic nitrogen are two dominant environmental factors affecting plant responses in biomass production. Plant functional traits, such as leaf area, leaf number, leaf photosynthetic rate and water use efficiency, also played important roles in affecting species responses to altered precipitation regimes. Our results clearly showed that two species differed significantly in their responses to altered intra-seasonal precipitation regimes, suggesting that the structure and functioning of grassland ecosystem may be significantly altered by specific species responses to future climate change. (C) 2012 Elsevier Masson SAS. All rights reserved. |
| 出处 | Acta Oecologica-International Journal of Ecology |
| 卷 | 44 |
| 页 | 2-10 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1146-609X |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/30814]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Liu Y. S.,Pan Q. M.,Zheng S. X.,et al. Intra-seasonal precipitation amount and pattern differentially affect primary production of two dominant species of Inner Mongolia grassland. 2012. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。