Imbalanced atmospheric nitrogen and phosphorus depositions in China: Implications for nutrient limitation
文献类型：SCI/SSCI论文
| 作者 | Zhu J. X.; Wang, Q. F.; He, N. P.; Smith, M. D.; Elser, J. J.; Du, J. Q.; Yuan, G. F.; Yu, G. R.; Yu, Q.; Yang, F |
| 发表日期 | 2016 |
| 关键词 | nutrient limitation N:P wet deposition ecological stoichiometry n-p stoichiometry wet deposition terrestrial ecosystems dry deposition fresh-water patterns future forest input availability |
| 英文摘要 | Atmospheric wet nitrogen (N) and phosphorus (P) depositions are important sources of bioavailable N and P, and the input of N and P and their ratios significantly influences nutrient availability and balance in terrestrial as well as aquatic ecosystems. Here we monitored atmospheric P depositions by measuring monthly dissolved P concentration in rainfall at 41 field stations in China. Average deposition fluxes of N and P were 13.698.69kgNha(-1)a(-1) (our previous study) and 0.210.17kg P ha(-1)a(-1), respectively. Central and southern China had higher N and P deposition rates than northwest China, northeast China, Inner Mongolia, or Qinghai-Tibet. Atmospheric N and P depositions showed strong seasonal patterns and were dependent upon seasonal precipitation. Fertilizer and energy consumption were significantly correlated with N deposition but less correlated with P deposition. The N:P ratios of atmospheric wet deposition (with the average of 7740, by mass) were negatively correlated with current soil N:P ratios in different ecological regions, suggesting that the imbalanced atmospheric N and P deposition will alter nutrient availability and strengthen P limitation, which may further influence the structure and function of terrestrial ecosystems. The findings provide the assessments of both wet N and P deposition and their N:P ratio across China and indicate potential for strong impacts of atmospheric deposition on broad range of terrestrial ecosystems. |
| 出处 | Journal of Geophysical Research-Biogeosciences |
| 卷 | 121 |
| 期 | 6 |
| 页 | 1605-1616 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 2169-8953 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/43971]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_生态网络实验室 |
| 推荐引用方式 GB/T 7714 | Zhu J. X.,Wang, Q. F.,He, N. P.,et al. Imbalanced atmospheric nitrogen and phosphorus depositions in China: Implications for nutrient limitation. 2016. |
入库方式： OAI收割
来源：地理科学与资源研究所
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