Plant carbon substrate supply regulated soil nitrogen dynamics in a tallgrass prairie in the Great Plains, USA: results of a clipping and shading experiment
文献类型：期刊论文
| 作者 | Cheng, Xiaoli1; Luo, Yiqi2; Su, Bo2; Wan, Shiqiang3; Hui, Dafeng4; Zhang, Quanfa1 |
| 刊名 | JOURNAL OF PLANT ECOLOGY
 |
| 出版日期 | 2011-12-01 |
| 卷号 | 4期号:4页码:228-235 |
| 关键词 | plant C substrate supply N mineralization N nitrification soil microclimate soil respiration |
| ISSN号 | 1752-9921 |
| DOI | 10.1093/jpe/rtr024 |
| 英文摘要 | Aims Land use management affects plant carbon (C) supply and soil environments and hence alters soil nitrogen (N) dynamics, with consequent feedbacks to terrestrial ecosystem productivity. The objective of this study was to better identify mechanisms by which land-use management (clipping and shading) regulates soil N in a tallgrass prairie, OK, USA. Methods We conducted 1-year clipping and shading experiment to investigate the effects of changes in land-use management (soil microclimates, plant C substrate supply and microbial activity) on soil inorganic N (NH4+ - N and NO3- - N), net N mineralization and nitrification in a tallgrass prairie. Important Findings Land-use management through clipping and/or shading significantly increased annual mean inorganic N, possibly due to lowered plant N uptake and decreased microbial N immobilization into biomass growth. Shading significantly increased annual mean mineralization rates (P < 0.05). Clipping slightly decreased annual mean N nitrification rates whereas shading significantly increased annual mean N nitrification rates. Soil microclimate significantly explained 36% of the variation in NO3- - N concentrations (P = 0.004). However, soil respiration, a predictor of plant C substrate supply and microbial activity, was negatively correlated with NH4+ - N concentrations (P = 0.0009), net N mineralization (P = 0.0037) and nitrification rates (P = 0.0028) across treatments. Our results suggest that change in C substrate supply and microbial activity under clipping and/or shading is a critical control on NH4+ - N, net N mineralization and nitrification rates, whereas clipping and shading-induced soil microclimate change can be important for NO3- - N variation in the tallgrass prairie. |
| 资助项目 | National Science Foundation[DEB 0078325] ; National Science Foundation[DEB 0743778] |
| WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000298039000005 |
| 出版者 | OXFORD UNIV PRESS |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/828]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Cheng, Xiaoli |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan 430074, Peoples R China 2.Univ Oklahoma, Dept Bot & Microbiol, Norman, OK 73019 USA 3.Chinese Acad Sci, Inst Bot, Lab Quantitat Vegetat Ecol, Beijing 100093, Peoples R China 4.Tennessee State Univ, Dept Biol Sci, Nashville, TN 37209 USA |
| 推荐引用方式 GB/T 7714 | Cheng, Xiaoli,Luo, Yiqi,Su, Bo,et al. Plant carbon substrate supply regulated soil nitrogen dynamics in a tallgrass prairie in the Great Plains, USA: results of a clipping and shading experiment[J]. JOURNAL OF PLANT ECOLOGY,2011,4(4):228-235. |
| APA | Cheng, Xiaoli,Luo, Yiqi,Su, Bo,Wan, Shiqiang,Hui, Dafeng,&Zhang, Quanfa.(2011).Plant carbon substrate supply regulated soil nitrogen dynamics in a tallgrass prairie in the Great Plains, USA: results of a clipping and shading experiment.JOURNAL OF PLANT ECOLOGY,4(4),228-235. |
| MLA | Cheng, Xiaoli,et al."Plant carbon substrate supply regulated soil nitrogen dynamics in a tallgrass prairie in the Great Plains, USA: results of a clipping and shading experiment".JOURNAL OF PLANT ECOLOGY 4.4(2011):228-235. |
入库方式： OAI收割
来源：武汉植物园
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。