Year-round warming and autumnal clipping lead to downward transport of root biomass, carbon and total nitrogen in soil of an alpine meadow (SCI)
文献类型：期刊论文
| 作者 | Xu M. H.; Peng F.; You Q. G.; Guo J.; Tian X. F.; Xue X.; Liu M. |
| 刊名 | Environmental and Experimental Botany
 |
| 出版日期 | 2015 |
| 卷号 | 109页码:54-62 |
| 英文摘要 | Climate warming and heavy livestock grazing are known to have great impacts on alpine ecosystems. However, it is still unclear how plant belowground biomass, soil carbon, and nitrogen respond to climate warming and heavy livestock grazing at different soil depths in these alpine ecosystems. The aim of this research was to investigate the individual and combined effects of warming and clipping on plant and soil properties in an alpine meadow ecosystem. Here, we report the results from a manipulation experiment, which has been running in the Qinghai-Tibetan Plateau (QTP) since 2010. Infrared radiators were used to simulate year-round warming starting in July 2010, while clipping was performed once a year in October to mimic the local heavy livestock grazing beginning from 2011. The experiment, including 3-year warming and 2-year clipping, was a randomized block design which consisted of five replications and four treatments: control (CK), warming without clipping (W), clipping without warming (C), and warming combined with clipping (W x C). Plant and soil properties were determined in the growing season of the alpine meadow in 2012 and 2013. The W treatments induced the downward transport of soil moisture to deeper layers. The drought caused by the downward transport of soil moisture in upper layers altered the allocation of plant belowground biomass at various soil depths. The relative effects on plant belowground biomass, organic carbon, activated carbon, and total nitrogen were also observed in deeper soil layers in W, C, and W x C. Therefore, the allocation of plant belowground biomass to deeper layers likely modified the distribution of organic carbon, activated carbon, and total nitrogen in soil of the alpine meadow in the QTP. (C) 2014 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.casnw.net/handle/362004/27567]  |
| 专题 | 寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文 |
| 推荐引用方式 GB/T 7714 | Xu M. H.,Peng F.,You Q. G.,et al. Year-round warming and autumnal clipping lead to downward transport of root biomass, carbon and total nitrogen in soil of an alpine meadow (SCI)[J]. Environmental and Experimental Botany,2015,109:54-62. |
| APA | Xu M. H..,Peng F..,You Q. G..,Guo J..,Tian X. F..,...&Liu M..(2015).Year-round warming and autumnal clipping lead to downward transport of root biomass, carbon and total nitrogen in soil of an alpine meadow (SCI).Environmental and Experimental Botany,109,54-62. |
| MLA | Xu M. H.,et al."Year-round warming and autumnal clipping lead to downward transport of root biomass, carbon and total nitrogen in soil of an alpine meadow (SCI)".Environmental and Experimental Botany 109(2015):54-62. |
入库方式： OAI收割
来源：寒区旱区环境与工程研究所
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