Changes in Biomass and Quality of Alpine Steppe in Response to N & P Fertilization in the Tibetan Plateau
文献类型：期刊论文
| 作者 | Pang, Z (Pang, Zhe)1; Zhao, GQ (Zhao, Guoqiang)3; Dong, JF (Dong, Junfu)1,3; Wang, SP; Cui, XY (Cui, Xiaoyong)1; Wang, SP (Wang, Shuping)2,3; Wang, F (Wang, Fang)3; Xu, N (Xu, Ning)3 |
| 刊名 | PLOS ONE
 |
| 出版日期 | 2016 |
| 卷号 | 11期号:5页码:e0156146 |
| 关键词 | Soil-moisture Nitrogen Grassland Communities Gradient Meadow Availability Degradation Limitation Management |
| DOI | 10.1371/journal.pone.0156146 |
| 文献子类 | Article |
| 英文摘要 | In the alpine steppe zone on the Central Tibetan Plateau, a large amount of area has been degraded due to natural and artificial factors. N & P fertilization is widely accepted to recover degraded pastures in other regions all over the world. However, it is not clear how alpine steppe communities respond to N & P fertilization, and what is the optimal application rate, in the perspective of forage production. To attempt to explore these questions, in July 2013, two fencing sites were designed in Baingoin County with 12 treatments of different levels of nitrogen (N-0: 0; N-1: 7.5 g m(-2) yr(-1); N-2: 15 g m(-2) yr(-1)) & phosphate (P-0: 0; P-1: 7.5 gP(2)O(5) m(-2) yr(-1); P-2: 15 gP(2)O(5) m(-2) yr(-1); P-3: 30 gP(2)O(5) m(-2) yr(-1)). The results indicated N&P addition was capable to ameliorate the quality of the two sites in the Tibetan Plateau steppe. Increasing N application level resulted in significant increment in Gramineae and total biomass in the two sites. P addition significantly improved the quantity of Compositae, total biomass and the biomasss of other species in site II, while it only significantly improved the total biomass in site I. Gramineae was much more sensitive to N-induced changes than P-induced changes, and this indicated N addition was better to ameliorate the quality of plateau steppe than P-induced changes. No strong evidence was found for critical threshold within 15 g N m(-2) yr(-1), and there was decreasing tendency when P addition rate was above 15 g m(-2) yr(-1). N&P has the potential to accelerate soil acidification, which improved the content of available K, likely as a result of nonsignificant correlation between biomass and soil moisture. This work highlights the the tradeoffs that exist in N and P addition in recovering degraded steppe. |
| 学科主题 | 普通生物学 |
| 语种 | 英语 |
| WOS记录号 | WOS:000376881700065 |
| 源URL | [http://ir.itpcas.ac.cn/handle/131C11/7696]  |
| 专题 | 青藏高原研究所_图书馆 |
| 通讯作者 | Wang, SP |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Life Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pang, Z ,Zhao, GQ ,Dong, JF ,et al. Changes in Biomass and Quality of Alpine Steppe in Response to N & P Fertilization in the Tibetan Plateau[J]. PLOS ONE,2016,11(5):e0156146. |
| APA | Pang, Z .,Zhao, GQ .,Dong, JF .,Wang, SP.,Cui, XY .,...&Xu, N .(2016).Changes in Biomass and Quality of Alpine Steppe in Response to N & P Fertilization in the Tibetan Plateau.PLOS ONE,11(5),e0156146. |
| MLA | Pang, Z ,et al."Changes in Biomass and Quality of Alpine Steppe in Response to N & P Fertilization in the Tibetan Plateau".PLOS ONE 11.5(2016):e0156146. |
入库方式： OAI收割
来源：青藏高原研究所
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