Response of Kobresia pygmaea and Stipa purpurea Grassland Communities in Northern Tibet to Nitrogen and Phosphate Addition
文献类型：SCI/SSCI论文
| 作者 | Wang J. S.; Wang, Z. K.; Zhang, X. Z.; Zhang, Y. J.; Ran, C. Q.; Zhang, J. L.; Chen, B. X.; Zhang, B. S. |
| 发表日期 | 2015 |
| 关键词 | Fertilization nitrogen and phosphorus addition alpine grassland soil productivity Tibetan Plateau species richness alpine meadow plateau productivity fertilization biodiversity diversity degradation competition ecosystems |
| 英文摘要 | The Tibetan Plateau is of fundamental ecological significance to China, Asia, and the world. In recent years, Tibetan grasslands have suffered from severe degradation due to climate change and anthropogenic disturbance. In this study, nitrogen (N) and phosphate were applied to a moderately degraded Kobresia pygmaea meadow and Stipa purpurea steppe in the arid alpine northern Tibetan Plateau. The results showed that with increasing nitrogenous fertilizer, the height, coverage, biomass, and importance value of the K. pygmaea population decreased whereas the population of S. purpurea exhibited the opposite trend. Application of a mixed fertilizer with the same amount of N and phosphorus (P) (5 g each per m(2)) doubled the biomass of the K. pygmaea meadow and increased the aboveground biomass of the S. purpurea steppe by 72.3%. The nitrogenous fertilizer increased the total biomass and belowground biomass of the S. purpurea steppe, whereas the mixed fertilizer was beneficial to aboveground grass recovery. Application of 10 g N + 5 g P m(-2) fertilizer increased aboveground biomass by 164.8%, whereas the belowground biomass was less than the control by 4.7%. The N and P fertilizer did not affect soil pH, except for some changes in soil N and P contents. |
| 出处 | Mountain Research and Development |
| 卷 | 35 |
| 期 | 1 |
| 页 | 78-86 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0276-4741 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38925]  |
| 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 | Wang J. S.,Wang, Z. K.,Zhang, X. Z.,et al. Response of Kobresia pygmaea and Stipa purpurea Grassland Communities in Northern Tibet to Nitrogen and Phosphate Addition. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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