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Experimental warming and clipping altered litter carbon and nitrogen dynamics in a tallgrass prairie
文献类型：期刊论文
| 作者 | Cheng, Xiaoli1,2; Luo, Yiqi2; Su, Bo2; Zhou, Xuhui2; Niu, Shuli2; Sherry, Rebecca2; Weng, Ensheng2; Zhang, Quanfa1 |
| 刊名 | AGRICULTURE ECOSYSTEMS & ENVIRONMENT
 |
| 出版日期 | 2010-08-15 |
| 卷号 | 138期号:3-4页码:206-213 |
| 关键词 | Climate change Land use practice Litter decomposition Litter C and N dynamics Initial litter quality Soil microclimate |
| ISSN号 | 0167-8809 |
| DOI | 10.1016/j.agee.2010.04.019 |
| 英文摘要 | Litter carbon (C) and nitrogen (N) dynamics are important processes in regulating C and N cycling in ecosystems. However, it is not well understood how global climate change and land use practice interactively affect litter C and N dynamics in ecosystems. We conducted a field experiment in a tallgrass prairie in Oklahoma. USA, to study effects of climate warming and clipping (as mimic of agricultural hay harvest) on litter C and N dynamics in association with litter production and decomposition of dominant species C(4) grass and C(3) forb. Warming did not significantly affect specific decomposition and N immobilization/mineralization rates of either species but increased C(4) and decreased C(3) litter production. Increased C(4) litter production, together with its intrinsic low decomposition, resulted in 16-47% increase in litter mass. Warming decreased N concentrations, litter N production, litter N pool and litter N output (i.e., litter N loss). Clipping significantly increased specific decomposition rates of C(4) litter but decreased litter production, litter mass and litter N contents. Our results suggest that indirect effects of climate change via shifts in plant species composition and decreases in litter quality are much more important than its direct effects on litter decomposition and subsequent C and N turnovers. (C) 2010 Elsevier B.V. All rights reserved. |
| 资助项目 | University of Oklahoma ; National Science Foundation (NSF)[DEB 0078325] ; National Science Foundation (NSF)[DEB 0743778] ; Office of Science (BER), Department of Energy[DEFG02-006ER64319] |
| WOS研究方向 | Agriculture ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000281107500010 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/933]  |
| 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, Wuhan Bot Garden, Wuhan 430074, Peoples R China 2.Univ Oklahoma, Dept Bot & Microbiol, Norman, OK 73019 USA |
| 推荐引用方式 GB/T 7714 | Cheng, Xiaoli,Luo, Yiqi,Su, Bo,et al. Experimental warming and clipping altered litter carbon and nitrogen dynamics in a tallgrass prairie[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2010,138(3-4):206-213. |
| APA | Cheng, Xiaoli.,Luo, Yiqi.,Su, Bo.,Zhou, Xuhui.,Niu, Shuli.,...&Zhang, Quanfa.(2010).Experimental warming and clipping altered litter carbon and nitrogen dynamics in a tallgrass prairie.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,138(3-4),206-213. |
| MLA | Cheng, Xiaoli,et al."Experimental warming and clipping altered litter carbon and nitrogen dynamics in a tallgrass prairie".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 138.3-4(2010):206-213. |
入库方式： OAI收割
来源：武汉植物园
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