Effects of water and nitrogen addition on vegetation carbon pools in a semi-arid temperate steppe
文献类型：SCI/SSCI论文
| 作者 | Jia J. Q.; Dong, Y. S.; Qi, Y. C.; Peng, Q. ; Liu, X. C.; Sun, L. J.; Guo, S. F.; He, Y. L.; Cao, C. C.; Yan, Z. Q.
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| 发表日期 | 2016 |
| 关键词 | Vegetation carbon pools Increasing precipitation Nitrogen addition Interactive effect Temperate steppe north-american grasslands net primary productivity inner-mongolia soil respiration terrestrial ecosystems china responses precipitation photosynthesis limitation |
| 英文摘要 | Global change will lead to increases in regional precipitation and nitrogen (N) deposition in the semi-arid grasslands of northern China. We investigated the responses of vegetation carbon (C) pools to simulated precipitation and N deposition increases through field experiments in a typical steppe in Inner Mongolia. The treatments included NH4NO3 addition at concentrations of 0 (CK), 5 (LN, low nitrogen), 10 (middle nitrogen, MN), and 20 (HN, high nitrogen) (g m(-2) a(-1)) with and without water. After three consecutive years of treatment, from 2010 to 2012, water addition did not significantly change the size of the total vegetation C pools, but it significantly decreased the ratio of root:shoot (R:S) (P = 0.05) relative to controls. By contrast, N addition significantly increased the total vegetation C pools. The C pools in the LN, MN and HN treatments increased by 22, 39 and 44 %, respectively. MN produced the largest effect among the N concentrations, although differences between N-added treatments were not significant (P > 0.05). N addition significantly reduced the ratio of root:shoot (R:S) (P = 0.03). However, there were no significant interactive effects of water and N addition on the vegetation C pools. |
| 出处 | Journal of Forestry Research |
| 卷 | 27 |
| 期 | 3 |
| 页 | 621-629 |
| 语种 | 英语 |
| ISSN号 | 1007-662X |
| DOI标识 | 10.1007/s11676-015-0128-7 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/43001]  |
| 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 | Jia J. Q.,Dong, Y. S.,Qi, Y. C.,et al. Effects of water and nitrogen addition on vegetation carbon pools in a semi-arid temperate steppe. 2016. |
入库方式： OAI收割
来源：地理科学与资源研究所
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