Leaf litter of a dominant cushion plant shifts nitrogen mineralization to immobilization at high but not low temperature in an alpine meadow
文献类型：SCI/SSCI论文
| 作者 | He Y. T. ; Xu X. L. ; Kueffer C. ; Zhang X. Z. ; Shi P. L. |
| 发表日期 | 2014 |
| 关键词 | Alpine meadow Climate change Cushion plant Cmineralization Litter decomposition N mineralization Nutrient cycling Tibetan Plateau soil microbial biomass organic-matter decomposition androsace-tapete primulaceae spatial genetic-structure qinghai-tibetan plateau arctic soils positive associations community structure inorganic nitrogen central chile |
| 英文摘要 | We evaluated the effects of temperature and addition of leaf litter of Androsace tapete MaximWe-a dominant cushion plant species of alpine meadows on the Tibetan Plateau-on carbon (C) and nitrogen (N) mineralization, microbial biomass C (MBC) and N (MBN). A laboratory incubation experiment with and without cushion plant litter addition was conducted for 112 days at three temperature regimes (-1, 5 and 11 A degrees C). C and net N mineralization were simultaneously measured during the incubation period. C and N mineralization were affected by interactions between litter addition and temperature. Litter addition increased C mineralization and MBN but shifted N mineralization to immobilization at higher temperature. The positive relationship between net N mineralization and MBC and MBN was shifted to a negative one through cushion plant litter addition. Cushion plant litter also changed the relationship between C mineralization and net N mineralization from insignificantly positive to significantly negative. These findings indicate that low temperature in winter could be important for alpine plants because low temperature can increase net N mineralization and supply plants with available N for their growth in the early growing season. During the growing season, climate warming-either directly through a temperature effect or indirectly through triggering increased cushion plant litter production-might lead to stronger competition for N between alpine plants and microorganisms. |
| 出处 | Plant and Soil |
| 卷 | 383 |
| 期 | 1-2 |
| 页 | 415-426 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0032-079X |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/29843]  |
| 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 | He Y. T.,Xu X. L.,Kueffer C.,et al. Leaf litter of a dominant cushion plant shifts nitrogen mineralization to immobilization at high but not low temperature in an alpine meadow. 2014. |
入库方式： OAI收割
来源：地理科学与资源研究所
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